Entries |
Document | Title | Date |
20080198199 | Collective Transfer Inkjet Nozzle Plate and Method of Producing the Same - There provides a nozzle plate having fine nozzle holes capable of transferring a pattern collectively, and a method of producing the same. Further, there provides a method of forming fine nozzle holes in a required shape, at a required position on a substrate, and an inkjet nozzle plate obtained by the method. Moreover, there provides a collective transfer inkjet nozzle plate can have a high imaging efficiency, and can reduce the cost by simplifying a nozzle controller; and a method of producing the same. | 08-21-2008 |
20080198200 | NOZZLE PLATE, METHOD FOR PRODUCING NOZZLE PLATE, AND METHOD FOR PRODUCING INK-JET HEAD - A nozzle plate includes a first thermoplastic resin film; a reinforcing plate which is formed of a material having a rigidity higher than that of the first thermoplastic resin film and which has one surface joined to the first thermoplastic resin film; and a second thermoplastic resin film which is joined to the other surface of the reinforcing plate; wherein a nozzle is formed for the first thermoplastic resin film; and through-holes, which are communicated with the nozzle, are formed through the reinforcing plate and the second thermoplastic resin film. Therefore, the nozzle plate can be produced without using any adhesive. Further, the thermoplastic resin films are joined to the both surfaces of the reinforcing plate. Therefore, any warpage is hardly caused in the reinforcing plate and the first and second thermoplastic resin films, which would be otherwise caused by the difference in coefficient of thermal expansion. | 08-21-2008 |
20080204511 | Liquid Discharging Apparatus and Method for Manufacturing Liquid Discharging Apparatus - There is provided a head including a chip | 08-28-2008 |
20080204512 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes: a flow channel unit including a flow-channel-formed substrate that defines liquid flow channels including pressure chambers communicating with nozzle openings and a sealing plate formed with a diaphragm that varies the capacities of the pressure chambers and a liquid introduction hole, the sealing plate being joined to the flow-channel-formed substrate and defining lines of liquid flow channels including pressure chambers; and a head case including a storage chamber that accommodates a pressure generator for displacing the diaphragm and a case flow channel for supplying liquid to the liquid flow channel of the flow channel unit, the diaphragm being arranged at an opening of the storage chamber on the bottom surface side and the flow channel unit being joined to the head case in a state in which the case flow channel and the liquid flow channel are communicated with each other via the liquid introduction hole, and the sealing plate is formed of a composite plate member formed by adhering an electrically conductive supporting substrate which is joined to the head case and an insulative elastic film joined to the flow-channel-formed substrate to each other, the inner diameter of the liquid introduction hole at least on the side of the supporting substrate is set to be larger than the inner diameter of the case flow channel to form a shoulder portion between the case flow channel and the liquid introduction hole, and an insulating material is secured in the shoulder portion. | 08-28-2008 |
20080204513 | LIQUID JET APPARATUS, LIQUID JET HEAD, AND LIQUID - A liquid jet head includes a nozzle element having nozzles from which a recording liquid is ejected to a recording medium, wherein the recording liquid contains fine particles of a pigment, wherein the fine particles of the pigment contained in the recording liquid are no less than 1% by weight, wherein each of the nozzles has an area that is less than 500 μm | 08-28-2008 |
20080204514 | Nozzle Arrangement Having An Actuator Slot Protection Barrier To Reduce Ink Wicking - A nozzle arrangement for an inkjet printer is provided. The arrangement includes a wafer substrate defining a supply channel, and chamber side and roof walls positioned on the substrate, said walls defining a nozzle chamber operatively supplied with ink via the supply channel, with a nozzle rim defined in the roof wall. The arrangement also includes an actuator device passing through a slot in a side wall of the chamber, the device configured to operatively eject ink from the nozzle rim. Also included is an actuator slot protection barrier mounted on the actuator device proximate the slot and configured to reduce ink wicking on the nozzle rim during ejection of ink from the nozzle rim. | 08-28-2008 |
20080204515 | Nozzle Arrangement For An Inkjet Printhead Having An Ejection Actuator And A Refill Actuator - A nozzle arrangement for an inkjet printhead is provided. The nozzle arrangement includes a wafer substrate defining a nozzle chamber and drive circuitry and ink passivation layers defining an inlet to the chamber. An etch stop layer forms a roof layer for the chamber with an ink ejection port defined in the roof layer. The nozzle arrangement also includes an ejection actuator and a refill actuator collectively spanning the inlet, said ejection actuator actuatable via the drive circuitry layer to eject ink from the ejection port, and said refill actuator actuatable via the drive circuitry layer to facilitate refilling of the chamber with ink via the inlet. | 08-28-2008 |
20080211871 | NOZZLE PLATE, METHOD FOR MANUFACTURING NOZZLE PLATE, DROPLET DISCHARGE HEAD, AND DROPLET DISCHARGE APPARATUS - A nozzle plate includes: a first silicon layer; a glass layer; a second silicon layer provided between the first silicon layer and the glass layer, the second silicon layer being bonded to the glass layer; and a silicon oxide layer provided between the first silicon layer and the second silicon layer. A nozzle hole passing through the first silicon layer and discharging a droplet is formed. A channel passing through the silicon oxide layer and the second silicon layer and communicating with the nozzle hole is formed. A liquid chamber formed in the glass layer and communicating with the channel is formed. | 09-04-2008 |
20080225082 | Printhead having hydrophobic polymer coated on ink ejection face - A printhead having a hydrophobic ink ejection face is provided. At least part of the ink ejection face is coated with a hydrophobic polymeric material selected from the group comprising: polymerized siloxanes and fluorinated polyolefins. | 09-18-2008 |
20080225083 | PRINTHEAD HAVING MOVING ROOF STRUCTURE AND MECHANICAL SEAL - A nozzle assembly for an inkjet printhead is provided. The nozzle assembly comprises a nozzle chamber having a roof, the roof having a moving portion moveable relative to a static portion and a nozzle opening defined in the roof, such that movement of the moving portion relative to the static portion causes ejection of ink through the nozzle opening. The nozzle assembly also comprises an actuator for moving the moving portion relative to the static portion, and a mechanical seal interconnecting the moving portion and the static portion. The mechanical seal comprises a polymeric material selected from the group comprising: polymerized siloxanes and fluorinated polyolefins. | 09-18-2008 |
20080225084 | Head for liquid discharging apparatus - A head for a liquid discharging apparatus includes a cavity unit having a cavity plate in which pressure chambers are formed and a vibration plate and a base plate which are joined to upper and lower surfaces of the pressure chambers respectively. In a joining surface of the cavity plate and the vibration plate and in a joining surface of the cavity plate and the base plate, test grooves are formed corresponding to column portions which partition mutually adjacent pressure chambers among the plurality of pressure chambers, and communication grooves capable of supplying air communicate with the respective test grooves. By supplying air to the respective test grooves through the communication grooves and detecting a change in supply pressure thereof, it is possible to test a joint state of the cavity plate with the vibration plate and with the base plate at the column portions. | 09-18-2008 |
20080231659 | INK JET RECORDING APPARATUS - Even in the case where preliminary ejection is performed by a recording head having an array of pigment ink ejection outlets and an array of dye ink ejection outlets in which a length of the pigment ink ejection outlet array is longer than a length of the dye ink ejection outlet array, deposition of preliminarily ejected pigment ink at a preliminary ejection receiving portion is effectively prevented by providing an inclined surface at the preliminary ejection receiving portion so that ink from the dye ink ejection outlets is received at an upstream position of the inclined surface and ink from the pigment ink ejection outlets is received at a downstream position of the inclined surface in a direction of gravity. | 09-25-2008 |
20080239001 | Liquid ejection apparatus - In a liquid ejection apparatus, common liquid chambers adjacent to each other and connection passages extending from the adjacent common liquid chambers are separated by a partition wall. The partition wall has a first side surface and a second side surface opposite the first side surface. The first side surface define one of side surfaces of the common chamber and one of side surfaces of the connection passage extending from the common chamber. The second side surface defines one of side surfaces of the other common chamber and one of side surfaces of the other connection passage extending from the other common chamber. The partition wall has a curved surface connecting the first side surface to the second side surface in a vicinity of a position where the connection passages having the partition wall placed therebetween are connected to each other. A curvature of the curved surface is larger than a curvature of an arc having a diameter equal to a width of the partition wall. | 10-02-2008 |
20080246806 | METHOD OF PRODUCING AN ELASTIC PLATE MEMBER FOR A LIQUID JET HEAD - A method for producing an elastic plate for a liquid jet head, which includes etching a rolled metal plate based on a rolling direction of the rolled metal plate, to form an etched portion and a non-etched portion on the rolled metal plate. The thickness of the etched portion is thinner than the thickness of the non-etched portion and the rolling direction is substantially perpendicular to a long side of the rolled metal plate. | 10-09-2008 |
20080246807 | Printhead Having Nozzle Arrangements With Sealing Structures - The present invention relates a printhead for an inkjet printer. The printhead has a plurality of nozzle arrangements, with each arrangement having a substrate defining an ink inlet channel leading to a nozzle chamber in fluid communication with the ink inlet channel and an ink ejection port through which ink from the nozzle chamber is ejected. Each arrangement also includes an ink ejection paddle extending across the nozzle chamber between the ink inlet channel and the ink ejection port, and a thermal bend actuator configured to operatively actuate the paddle. Also included is a sealing structure interposed between a working end of the actuator arm and a proximal end portion of the paddle. | 10-09-2008 |
20080259121 | JETSTACK PLATE TO PLATE ALIGNMENT - An apparatus has a first plate having a first array of holes, with a first plate alignment hole having a smaller size than the other holes in the array, a second plate having a second array of holes to be alignable to the first array of holes, a second plate alignment hole having a smaller size than the other holes in the array, and the first plate alignment hole and the second plate alignment hole having different positions. A method of aligning plates provides a first plate having a top and bottom and first array of holes including a first plate alignment hole having a size smaller than the other holes in the first array, places a second plate having a second array of holes on the top of the first plate such that the first array of holes and the second array of holes align, directs light at the bottom of the first plate, locates a profile of the first plate alignment hole in the second array of holes to verify alignment. | 10-23-2008 |
20080259122 | INKJET PRINTHEAD HAVING NOZZLE ARRANGEMENTS WITH HYDROPHOBICALLY TREATED ACTUATORS AND NOZZLES - Provided is an inkjet printhead having a plurality of nozzle arrangements. Each arrangement includes a wafer substrate defining a nozzle and an ink chamber underneath the nozzle with an ink supply channel leading to said chamber, as well as a paddle arranged in the chamber. Each arrangement also includes an actuator arrangement positioned on the substrate and configured to actuate the paddle to eject ink from the nozzle, wherein the actuator and nozzle are hydrophobically treated to prevent ejected ink from wicking after ejection. | 10-23-2008 |
20080266355 | Inkjet head and manufacturing method thereof - An ink-jet head and method of manufacturing the ink-jet head are disclosed. For an ink-jet head including a chamber containing an ink supplied through a channel, a membrane covering the chamber, and a nozzle jetting the ink, the manufacturing method may include forming the chamber by etching a portion of one side of a first substrate; forming the channel connected with the chamber by etching a portion of the other side of the first substrate; and bonding a second substrate to the one side of the first substrate such that the chamber is covered. This allows greater ease in manufacturing, while reducing the risk of damage in the wafer and increasing yield. Furthermore, the thickness of the chamber may be reduced regardless of the thickness of the chamber, which can improve the reaction speed to signals and improve frequency characteristics. | 10-30-2008 |
20080266356 | COMPACT NOZZLE ASSEMBLY OF AN INKJET PRINTHEAD - A nozzle assembly for an inkjet printhead is disclosed. The nozzle assembly includes an inkjet nozzle having an actuator for ejecting an ink droplet from the inkjet nozzle when a resistive element of the actuator is heated by an electrical current, a shift register comprising a plurality of successive registers, the shift register receives input data in a first register, and shifts the input data to successive registers upon receipt of a shift signal, a transfer register for latching data in one of the registers of the shift register; a control gate for outputting a control pulse in response to data in the transfer register, and a drive transistor for providing an energy pulse to the resistive element of the actuator upon receipt of the control pulse. The nozzle assembly covers an area of less than 20,000 square microns. | 10-30-2008 |
20080273058 | Ink Ejection Nozzle Arrangement for an Inkjet Printer - Provided is an ink ejection nozzle arrangement for an inkjet printer. The nozzle arrangement includes a wafer substrate with an etched ink chamber and ink channel leading to the chamber, as well as an ink ejection nozzle defined over the chamber with an ejection port etched therein. The arrangement also includes a glass actuator arm attached to the substrate via a post on the substrate, said arm having a copper nickel alloy heating means attached at a lower portion thereof proximate said post, wherein the arm extends through a slot in the chamber. The arrangement further includes a paddle fast with the arm inside said chamber, the paddle interposed between the ink channel and the ejection port. | 11-06-2008 |
20080273059 | NOZZLE ASSEMBLY OF AN INKJET PRINTHEAD - A nozzle assembly for an inkjet printhead is disclosed. The nozzle assembly includes an inkjet nozzle having an actuator for ejecting an ink droplet from the inkjet nozzle when a resistive element of the actuator is heated by an electrical current, a shift register comprising a plurality of successive registers, the shift register receives input data in a first register, and shifts the input data to successive registers upon receipt of a shift signal, a transfer register for latching data in one of the registers of the shift register; a control gate for outputting a control pulse in response to data in the transfer register, and a drive transistor for providing an energy pulse to the resistive element of the actuator upon receipt of the control pulse. The nozzle is spaced from other nozzles ejecting ink of a same colour by less than 32 microns in a direction transverse to the direction of movement of a print media upon which ink is ejected. | 11-06-2008 |
20080278542 | Micro-Fluid Ejection Devices Having Reduced Input/Output Addressable Heaters - Micro-fluid ejection devices, methods for making micro-fluid ejection, heads, and micro-fluid ejection heads having N actuators on a first substrate and logic capable of driving the N actuators on a second substrate. The ejection heads also have less than N electrical connections between the first and second substrates. | 11-13-2008 |
20080284821 | NOZZLE ARRANGEMENT FOR AN INKJET PRINTHEAD WITH A DIFFUSION BARRIER - Provided is a nozzle arrangement for an inkjet printhead. The arrangement includes a substrate defining an ink inlet channel and ink chamber with a CMOS layer deposited on top of the substrate, and a nozzle wall, roof and rim positioned on top of the substrate via which ink is operatively ejected from the chamber. The arrangement also includes an anchor atop the CMOS layer, said anchor linked to a stiffening beam by means of an actuator beam, the stiffening beam suspended from the CMOS layer by means of a passive beam and a carrier. Further included is a diffusion barrier about the ink chamber to inhibit the diffusion of hydroxyl ions through the CMOS layer. | 11-20-2008 |
20080291245 | LIQUID EJECTION HEAD - A liquid ejection head capable of achieving satisfactory printing without nozzle misfiring in an area close to an end of a nozzle row and droplet misdirection is provided. The ejection orifices, except for dummy orifices, are provided with protrusions. Four operative ejection orifices located close to each of the ends of each ejection orifice row are defined as end-located ejection orifices. Each of the protrusions provided in the end-located ejection orifices has a shorter length than that of the protrusion provided in the ejection orifice located in the central portion of the nozzle row. | 11-27-2008 |
20080297564 | INKJET PRINTHEAD - An inkjet printhead includes a substrate in which an ink feed hole is formed, a plurality of ejection devices formed on the substrate at sides of the ink feed hole, a chamber layer stacked on the substrate and in which a plurality of ink chambers, which correspond to the ejection devices and in which ink supplied from the ink feed hole is filled, are formed, and a nozzle layer in which a plurality of nozzles corresponding to the ink chambers are formed, wherein the ink feed hole includes a plurality of through holes formed through the substrate in the thickness direction thereof. | 12-04-2008 |
20080303865 | Ink-jet printer, ink-jet head and method of manufacturing the ink-jet head - A piezoelectric sheet of an ink-jet head includes dummy individual electrodes in addition to individual electrodes which corresponds to respective nozzles. The dummy individual electrodes are in an outer periphery of the individual electrodes. FPC board applies drive voltage to the individual electrodes in a drive area, and deforms the area in the piezoelectric sheet in the direction of an ink pressure chamber, while the drive voltage is not applied to the individual electrodes of the non-drive area. When the dummy individual electrodes are formed in the non-drive area, a boundary area of the drive area and the non-drive area is uniformly fired when the piezoelectric sheet is manufactured. In the drive area, since surrounding structures of the respective individual electrodes become equal to one another, ink discharge characteristic is substantially uniform in the boundary area of the drive area and the non-drive area. | 12-11-2008 |
20080303866 | NOZZLE ASSEMBLY FOR AN INKJET PRINTER FOR EJECTING A LOW SPEED DROPLET - A nozzle assembly for an inkjet printhead is disclosed. The nozzle assembly includes an inkjet nozzle having an actuator for ejecting an ink droplet from the inkjet nozzle when a resistive element of the actuator is heated by an electrical current. A drive transistor provides an energy pulse to the resistive element of the actuator, and control logic controls the drive transistor. The velocity of the ink droplet is less than 8 m/s. | 12-11-2008 |
20080303867 | METHOD OF FORMING PRINTHEAD BY REMOVING SACRIFICIAL MATERIAL THROUGH NOZZLE APERTURES - An inkjet printhead that has an array of droplet ejectors supported on a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. When printing 100% coverage at full print rate, each of the actuators has an average power consumption less than 1.5 mW. | 12-11-2008 |
20080309718 | NOZZLE PLATE, DROPLET DISCHARGE HEAD, METHOD FOR MANUFACTURING THE SAME AND DROPLET DISCHARGE DEVICE - A nozzle plate includes a silicon substrate, and a nozzle hole formed in the silicon substrate for discharging a liquid droplet provided with: a first nozzle portion formed perpendicularly to a surface of the silicon substrate; a second nozzle portion formed on a same axis as an axis of the first nozzle portion and having a cross-sectional area that is larger than a cross-sectional area of the first nozzle portion; and an inclined portion having a cross-sectional area gradually increasing from the first nozzle portion to the second nozzle portion. | 12-18-2008 |
20080309719 | LIQUID DISCHARGE HEAD - A liquid discharge head comprises a discharge port forming member having formed therein a discharge port arranged correspond to an energy generating element which generates energy to eject a liquid and a flow path forming member for forming a flow path to supply ink to the discharge port. At least one of the discharge port forming member and the flow path forming member is made of a cured material of a composition containing an epoxy resin and a phenol resin having a higher oxygen equivalent than that of the epoxy resin. | 12-18-2008 |
20080309720 | INKJET PRINTER NOZZLE FORMED ON A DRIVE TRANSISTOR AND CONTROL LOGIC - A nozzle assembly for an inkjet printhead is disclosed. The nozzle assembly includes an inkjet nozzle having an actuator for ejecting an ink droplet from the inkjet nozzle when a resistive element of the actuator is heated by an electrical current. A drive transistor provides an energy pulse to the resistive element of the actuator, and control logic controls the drive transistor. The drive transistor and control logic are formed on a silicon substrate, and the inkjet nozzle is formed over the drive transistor and control logic. | 12-18-2008 |
20080309721 | LOW VOLTAGE NOZZLE ASSEMBLY FOR AN INKJET PRINTER - A nozzle assembly for an inkjet printhead is disclosed. The nozzle assembly includes an inkjet nozzle having an actuator for ejecting an ink droplet from the inkjet nozzle when a resistive element of the actuator is heated by an electrical current. A drive transistor provides an energy pulse to the resistive element of the actuator, and control logic controls the drive transistor. The voltage of the energy pulse is less than 10 V. | 12-18-2008 |
20080309722 | LOW PRESSURE NOZZLE FOR AN INKJET PRINTER - A nozzle assembly for an inkjet printhead is disclosed. The nozzle assembly includes an inkjet nozzle having an actuator for ejecting an ink droplet from the inkjet nozzle when a resistive element of the actuator is heated by an electrical current. A drive transistor provides an energy pulse to the resistive element of the actuator, and control logic controls the drive transistor. The actuator develops a pressure of less than 100 kPa within the inkjet nozzle. | 12-18-2008 |
20080309723 | PRINTHEAD INTEGRATED CIRCUIT WITH LARGE ARRAY OF DROPLET EJECTORS - An inkjet printhead that has an array of droplet ejectors supported on a single printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. The array has more than 2000 droplet ejectors and all the nozzle apertures are formed in a printhead surface layer on one face of the printhead IC. | 12-18-2008 |
20080309724 | PRINTHEAD INTEGRATED CIRCUIT WITH SMALL VOLUME DROPLET EJECTORS - An inkjet printhead that has an array of droplet ejectors supported on a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture, the ejected droplets having a volume less than 3 pico-litres each. | 12-18-2008 |
20080309725 | INKJET PRINTHEAD WITH FILTER STRUCTURE AT INLET TO INK CHAMBERS - An inkjet printhead that has an array of droplet ejectors supported on a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. Each of the droplet ejectors has a chamber in which the actuator is positioned, the chamber having an inlet for fluid communication with an ink supply. A filter structure in positioned the inlet to inhibit ingress of contaminants into the chamber. | 12-18-2008 |
20080309726 | PRINTHEAD INTEGRATED CIRCUIT WITH INK SUPPLY CHANNEL FEEDING A PLURALITY OF NOZZLE ROWS - An inkjet printhead that has an array of droplet ejectors supported on a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. The array of droplet ejectors is arranged in a plurality of rows and an ink supply channel extending parallel to the plurality of rows, and an inlet conduit extending from the supply channel to an opposing surface of the printhead IC. | 12-18-2008 |
20080309727 | PRINTHEAD INTEGRATED CIRCUIT WITH INK SUPPLY FROM BACK FACE - An inkjet printhead that has an array of droplet ejectors supported on one face of a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. The printhead IC having a printhead surface layer on one face which defines all the nozzle apertures on the array. The printhead IC also having a back face that is opposite said one face on which the printhead surface layer is formed, and at least one supply conduit extending from the back face to the array of droplet ejectors. The at least one supply conduit is in fluid communication with a plurality of the droplet ejectors in the array. | 12-18-2008 |
20080316261 | DROPLET PRINTING APPARATUS USING CAPILLARY ELECTRIC CHARGE CONCENTRATION - A droplet printing apparatus using capillary electric charge concentration includes a reservoir which contains a solution, a capillary nozzle comprising a back-end part and a front-end part disposed substantially opposite the back-end part, a target member spaced apart from the front-end part of the capillary nozzle at a predetermined distance, and a voltage supplier which supplies a voltage to the solution, wherein the back-end part is immersed in the solution and transmits the solution to the front-end part. | 12-25-2008 |
20080316262 | COMPACT NOZZLE ASSEMBLY FOR AN INKJET PRINTER - A nozzle assembly for an inkjet printhead is disclosed. The nozzle assembly includes an inkjet nozzle having an actuator for ejecting an ink droplet from the inkjet nozzle when a resistive element of the actuator is heated by an electrical current. A drive transistor provides an energy pulse to the resistive element of the actuator, and control logic controls the drive transistor. The drive transistor, control logic and inkjet nozzle covers an area of less than 20,000 μm | 12-25-2008 |
20080316263 | PRINTHEAD INTEGRATED CIRCUIT WITH HIGH DENSITY ARRAY OF DROPLET EJECTORS - An inkjet printhead that has an array of droplet ejectors supported on a single printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. The array has a nozzle aperture density of more than 100 nozzle apertures per square millimetre and all the nozzle apertures are formed in a printhead surface layer on one face of the printhead IC. | 12-25-2008 |
20080316264 | PRINTHEAD INTEGRATED CIRCUIT WITH NOZZLES IN THIN SURFACE LAYER - An inkjet printhead that has an array of droplet ejectors supported on a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. The array has a nozzle aperture density of more than 100 nozzle apertures per square millimetre and all the nozzle apertures are formed in a printhead surface layer on one face of the printhead IC. | 12-25-2008 |
20080316265 | PRINTHEAD INTEGRATED CIRCUIT WITH HIGH DENSITY ARRAY OF DROPLET EJECTORS - An inkjet printhead that has an array of droplet ejectors supported on a single printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. The printhead IC also has drive circuitry for providing the actuators with power, the drive circuitry having patterned layers of metal separated by interleaved layers of dielectric material. The layers of metal being interconnected by conductive vias, wherein the drive circuitry has more than two of the metal layers and each of the metal layers are less than 2 microns thick. | 12-25-2008 |
20080316266 | PRINTHEAD INTEGRATED CIRCUIT WITH SMALL NOZZLE APERTURES - An inkjet printhead that has an array of droplet ejectors supported on a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. The nozzle apertures each have an area less than 600 microns squared. | 12-25-2008 |
20080316267 | PRINTHEAD INTEGRATED CIRCUIT WITH LOW POWER OPERATION - An inkjet printhead that has an array of droplet ejectors supported on a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. When printing 100% coverage at full print rate, each of the actuators has an average power consumption less than 1.5 mW. | 12-25-2008 |
20080316268 | PRINTHEAD WITH LOW POWER DRIVE PULSES FOR ACTUATORS - An inkjet printhead that has an array of droplet ejectors supported on a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. When printing 100% coverage at full print rate, each of the actuators has an average power consumption less than 1.5 mW. | 12-25-2008 |
20080316269 | MICRO-ELECTROMECHANICAL NOZZLE ARRANGEMENT HAVING CANTILEVERED ACTUATORS - The invention provides for a micro-electromechanical nozzle arrangement for an inkjet printhead. The arrangement includes a substrate defining an inverted pyramidal ink chamber with a vertex thereof terminating at an ink supply channel defined by the substrate, said substrate having a layer of CMOS drive circuitry. The arrangement also includes a roof structure connected to the drive circuitry layer and covering the ink chamber, the roof structure defining a fluid ejection nozzle rim above said chamber. Also included is a plurality of actuators fast with and displaceable with respect to the roof structure, the actuators radially spaced about the nozzle rim between the guide rails. Each actuator has a serpentine heater element configured to expand thermally upon receiving current from the drive circuitry thereby moving said actuators into the chamber to increase a fluid pressure inside the chamber to eject a drop of ink via the ejection nozzle. Each actuator is cantilevered to a heater element in a bendable manner. | 12-25-2008 |
20080316270 | PRINTHEAD ASSEMBLY FOR RE-DIRECTING INK DROPLETS - A printhead assembly includes a printhead, in turn, including a plurality of ink ejection nozzles. A nozzle guard is formed from hydrophobic photoresist and is mounted to the printhead. The nozzle guard defines a plurality of channels located in register with respective nozzles so that droplets of ink from the nozzles can be bounced off internal walls of the channels during printing. | 12-25-2008 |
20080316271 | NOZZLE ARRANGEMENT FOR AN INKJET PRINTER WITH INK WICKING REDUCTION - Provided is nozzle arrangement for an inkjet printer. The arrangement includes a wafer substrate defining a supply channel and chamber side and roof walls positioned on the substrate, said walls defining a nozzle chamber operatively supplied with ink via the supply channel, a nozzle rim defined in the roof wall. The arrangement also includes a thermal bend actuator attached to said substrate via a post, the actuator passing through a slot defined in a wall of the chamber, the actuator ending in an ejection paddle inside the chamber, said actuator configured to operatively eject ink from the nozzle chamber. The arrangement further includes a poker extending from the paddle towards the nozzle rim such that an ink meniscus is formed between the rim and the poker, as well as an actuator slot protection barrier mounted on the actuator proximate the slot and configured to reduce ink wicking on the nozzle rim during ejection of ink from the nozzle rim. | 12-25-2008 |
20090002447 | LIQUID EJECTING HEAD AND INK JET PRINTING APPARATUS - The present invention provides a liquid ejecting head which inhibits the possible generation of satellites and possible inappropriate ejection during liquid ejection, enabling printing with improved image quality and reliability. Thus, ejection openings in the liquid ejecting head each selectively have projections or a circular shape depending on the characteristics of a liquid to be ejected. | 01-01-2009 |
20090002448 | FLUID DISCHARGING APPARATUS AND METHOD OF CONTROLLING THE FLUID DISCHARGING APPARATUS - A fluid discharging apparatus including a head, a medium support portion, a contact member, and an actuator portion. The head includes a plurality of nozzles through which a fluid is discharged onto a target medium. The medium support portion supports the medium. The contact member is provided within the medium support portion. The actuator portion moves at least one of the head and the medium support portion so that the plurality of nozzles are located close to or far from the contact member. During a standby state when fluid is not discharged onto the medium, the contact member is brought into contact with the head in order to seal the plurality of nozzles, and in a discharging state, the head is located away from the contact member in order to provide a space through which the medium is allowed to pass between the plurality of nozzles and the contact member. | 01-01-2009 |
20090002449 | Liquid-Ejection Integrated Circuit Device Having Nozzle Shield - A liquid-ejection integrated circuit device is provided which has a substrate having a plurality of liquid inlet channels, a plurality of liquid ejection nozzles on the substrate and a nozzle shield. Each nozzle has a liquid ejection port in communication with a respective inlet channel operable to eject liquid when displaced. The nozzle shield has a plurality of apertures in alignment with respective liquid ejection ports and struts connecting the shield to the substrate so that the nozzle shield is spaced from the nozzles. | 01-01-2009 |
20090002450 | Nozzle Arrangement With Rectilinear Ink Ejection - Provided is a nozzle arrangement for an ink jet printer. The arrangement includes a wafer substrate with a layer of drive circuitry, said substrate defining an ink supply channel through the substrate leading to an ink chamber with a roof defining an ink ejection port. The arrangement also includes an ink ejection arrangement for ejecting ink from the ink chamber via the port, said ink ejection arrangement having four symmetrically arranged thermal bend actuators each connected to a respective side to ensure that the roof is operatively displaced in a rectilinear manner during ink ejection. | 01-01-2009 |
20090009558 | Printhead Assembly With An Extrusion For Housing Bus Bars - Provided is a printhead assembly for a pagewidth printer. The assembly includes a substrate channel, and a plurality of printhead modules positioned in the channel to form a pagewidth printhead module assembly. Also included are an extrusion for housing bus bars operatively providing electrical power to the printhead modules, and a cover plate securing a flex printed circuit board (PCB) in the assembly, the PCB forming a data bus to the printhead modules. The assembly further includes compressible conductive strips between the busbars abutting contacts on an upper side of parts of the flex PCB, wherein the substrate channel defines a series of groups of holes through which the printhead modules are supplied with differently colored inks. | 01-08-2009 |
20090015636 | INKJET NOZZLE ARRANGEMENT WITH A STACKED CAPACITIVE ACTUATOR - An inkjet nozzle arrangement for an inkjet printer includes a wafer substrate. A layer of drive circuitry is deposited on the wafer substrate, and subsequent etchant layers are deposited on the drive circuitry to define a nozzle chamber with walls and a roof structure defining an ink ejection port. The arrangement also includes a stacked capacitive actuator arranged in said chamber, said actuator having alternative electrode plates sandwiched between a compressible polymer, wherein activation of the stacked actuator draws the electrode plates together to compress the polymer storing energy therein, with subsequent de-activation releasing said energy to eject ink from the ejection port. | 01-15-2009 |
20090015637 | INKJET NOZZLE ARRANGEMENT HAVING A NOZZLE RIM TO FACILITATE INK DROP MISDIRECTION - Provided is an inkjet nozzle arrangement for an inkjet printhead. The arrangement includes a wafer substrate defining sidewalls and a roof portion to form an ink chamber, the roof portion further defining a nozzle aperture, as well as a heater element suspended inside the ink chamber for thermal expansion and subsequent ejection of ink from the chamber via the nozzle aperture. The arrangement also includes a nozzle rim defined about the aperture on the roof portion, said rim having an inner and an outer lip to facilitate ink drop misdirection during ink ejection to minimise cavitation corrosion of the heater element. | 01-15-2009 |
20090027449 | SYSTEM AND METHOD FOR PRINTING A CONTINUOUS WEB EMPLOYING A PLURALITY OF INTERLEAVED INK-JET PENS FED BY A BULK INK SOURCE - This invention provides a system and method for printing continuous web and feeding ink to printing pens (or cartridges) that employs an array of interleaved ink-jet pens that are arranged to receive bulk ink through a manifold. The manifold and pens are mounted on a fixed array suspended over the web feed path. The manifold includes a plurality of self-sealing quick-disconnect couplings that each serve a discrete ink-jet pen. The pens lay down ink in a registered manner across the full width of the web. The pens are organized into two parallel, multi-pen arrays that are each diagonally oriented with respect to the feed direction. The feed path allows for duplex printing with a second web-side's array located on a lower level of the device, generally beneath the first-side's array. Duplex printing is facilitated due to its inherent length of the feed path. The printed part of the web is free of contact over predetermined lengths that ensure sufficient time for the drying of ink. Each pen is interconnected with a connection to a respective manifold that maintains a vacuum so as to prevent seepage of ink from the pen nozzles. The vacuum is maintained by a draw pump, while ink is continuously provided to the manifold via a float switch in a pressure regulator. The regulator is fed by a bulk ink supply using a feed pump. A check-valve standpipe on each manifold assists in removing any trapped air from the system, thus assisting in maintaining the vacuum. | 01-29-2009 |
20090027450 | INKJET PRINT HEAD AND MANUFACTURING METHOD THEREOF - An inkjet print head and a manufacturing method thereof capable of simplifying a manufacturing process without performing an additional process to form a heater layer that includes a substrate, a heating element stacked on the substrate to heat the ink, a transistor having a gate electrode to drive the heating element, a chamber layer to form an ink chamber filled with the ink above the heating element, and a nozzle layer stacked on the chamber layer to form a nozzle to eject the ink, wherein the gate electrode and the heating element include a metal silicide film formed through a salicide process. | 01-29-2009 |
20090027451 | LIQUID DROPLET EJECTING APPARATUS - A liquid droplet ejecting apparatus which ejects liquid to a recording medium, comprises a liquid droplet ejecting head including a nozzle surface in which a plurality of nozzles are formed, the nozzles being configured to eject liquid droplets; a dielectric elastomer disposed around the nozzle surface; a pair of electrodes configured to sandwich the dielectric elastomer; and a nozzle protector formed integrally with the dielectric elastomer on a recording medium side of the dielectric elastomer. | 01-29-2009 |
20090040273 | LIQUID EJECTION HEAD - The present invention provides a print head that ejects ink supplied through an ink supply port so as to prevent the size of satellites from being reduced while inhibiting an increase in resistance to an ink flow. In the print head, ink supply ports are arranged on both sides of a plurality of channels. A predetermined number of ink supply ports are arranged at least one side of the ink channel all over the range of the arrangement of the channels. One side of each of the plurality of channels is connected via the common liquid chamber to the liquid supply port located so as to extend in a direction in which the channels are arranged. | 02-12-2009 |
20090046126 | PRINTHEAD WITH DROPLET REDIRECTING NOZZLE GUARD - A printhead is provided having an ejection surface having a plurality of nozzles for ejecting droplets and a nozzle guard positioned over the ejection surface and having a plurality of channels therethrough aligned with the nozzles. The channels have hydrophobic sidewalls and are radially flared with respect to the ink ejection surface such that droplets which are ejected from the nozzles with misdirection rebound off the channel sidewalls to pass through the channels. | 02-19-2009 |
20090058932 | LIQUID EJECTING HEAD AND METHOD OF MANUFACTURING THE SAME - A first film adhesive between actuator units and a supply port plate, a second film adhesive between a reservoir plate and the supply port plate, and a third film adhesive between the reservoir plate and a nozzle plate are each provided with round holes having an equal size and formed in correspondence to the locations of nozzle communication ports. Thanks to the round holes having the equal size one another, irregularity in capacities of spaces formed by layers of the first film adhesive, the second adhesive, and the third film adhesive are reduced, thereby reducing a difference of passage resistance caused in the nozzle communication ports. Accordingly, it is possible to realize a printing head | 03-05-2009 |
20090058933 | INK JET PRINT HEAD - An object of the present invention is to provide an ink jet print head having plural types of nozzles arranged on the same substrate and through which ink droplets of different sizes are ejected, the ink jet print head exhibiting acceptable ejection performance regardless of the type of the nozzle. Thus, according to the present invention, each of the plural types of nozzles includes a bubbling chamber having an ejection energy generating element allowing an ink droplet to be ejected to a position located opposite an ejection port and an ejection port portion allowing the ejection port and the bubbling chamber to communicate with each other. Ratio of opening area of the ejection port portion at a position where the ejection port portion and the bubbling chamber communicate with each other, to the opening area of the ejection port is higher for the nozzle with a smaller ejection amount. | 03-05-2009 |
20090058934 | LIQUID EJECTING HEAD AND INK JET PRINTING APPARATUS - When each of an energy acting chamber and a second ejection port portion is partitioned by a first virtual plane into an area positioned on a first side of the first virtual plane and an area positioned on a second side of the first virtual plane, the energy acting chamber has a larger volume in the first side area than in the second side area. Conversely, the second ejection port portion has a smaller volume in the first side area than in the second side area. The first virtual plane is parallel to both a supply direction of a liquid flowing to the energy acting chamber and an ejection direction, and passes through a center of a heating element. The first virtual plane divides each of the energy acting chamber and the second ejection port portion into two parts in an orthogonal direction orthogonal to the supply direction. | 03-05-2009 |
20090058935 | LIQUID JET HEAD AND LIQUID JET DEVICE - A liquid jet head includes head modules each having a nozzle plate with a nozzle orifice and a passage-forming substrate having a pressure-generating chamber. The chamber communicates with the associated nozzle orifice and is pressurized by the pressure generating element so as to eject droplets. A head case is placed at the side of the passage-forming substrate opposite to the nozzle plate and has flow paths for providing a liquid to the pressure-generating chambers. The liquid jet head includes a fixing plate that has openings through which the nozzle orifices are exposed and carries the head modules positioned thereon. A connecting member is connected to the surface of the head module adjacent to the head case and has flow paths which communicate with the pressure-generating chambers. A reinforced portion made of an adhesive filling a clearance is positioned between adjacent head modules fixed to the fixing plate. | 03-05-2009 |
20090058936 | PRINTHEAD INTEGRATED CIRCUIT WITH MULTIPLE INK INLET FLOW PATHS - A printhead integrated circuit (IC) with an array of ink chambers defined by sidewalls extending between a nozzle plate and an underlying wafer substrate, each chamber having a nozzle in the nozzle plate plurality of nozzles, and an actuator for ejecting ink through the nozzle, one of the sidewalls of each chamber having an opening to allow ink to refill the chamber; an ink conduit between the nozzle plate and underlying wafer, the ink conduit being in fluid communication with the openings of a plurality of the ink chambers; and, a plurality of ink inlets defined in said substrate; wherein, the ink conduit is in fluid communication with the plurality of ink inlets for receiving ink to supply to the ink chambers. Introducing an ink conduit that supplies several of the nozzles, and is in itself supplied by several ink inlets, reduces the chance that nozzles will be starved of ink by inlet clogging. If one inlet is clogged, the ink conduit will draw more ink from the other inlets in the wafer. | 03-05-2009 |
20090058937 | NOZZLE ARRANGEMENT WITH SEALING STRUCTURE AND THERMAL ACTUATOR - A nozzle arrangement for an inkjet printer. the nozzle arrangement comprising a substrate assembly defining an inlet channel; a nozzle chamber wall and a roof wall collectively positioned on the substrate assembly to define a nozzle chamber in fluid communication with the inlet channel, the roof wall defining an ejection port in fluid communication with the nozzle chamber; a thermal actuator mounted to the substrate assembly and extending into the nozzle chamber to terminate in a free end, the thermal actuator comprising a pair of actuating members spaced apart to form a gap, one of the actuating members being connected to an electrical supply; a heat sink assembly positioned in the gap between the pair of actuating members; and a sealing structure provided between an end of the thermal actuator mounted to the substrate and an end of the thermal actuator terminating in the nozzle chamber, the sealing structure permitting movement of the thermal actuator therein and inhibiting fluid leakage from the nozzle chamber via surface tension. | 03-05-2009 |
20090058938 | NOZZLE ARRANGEMENT FOR AN INKJET PRINTER - A nozzle arrangement for an inkjet printer is disclosed. The nozzle arrangement is formed on a substrate defining an ink supply conduit. A nozzle chamber is formed over the ink supply conduit. The nozzle chamber is defined by a floor portion, a roof portion having an ejection port defined therein, and peripheral sidewalls extending from the floor portion and the roof portion respectively. The roof portion and the sidewalls extending from the roof portion are movable upwardly and downwardly relative to the floor portion. The nozzle arrangement further includes a bend actuator fastened at one end to the substrate and at an opposite end to the roof portion of the nozzle chamber. Differential expansion of the bend actuator causes the bend actuator to bend and straighten. This in turn displaces the roof portion and varies the volume of the nozzle chamber, causing ink to be ejected through the ink ejection port. | 03-05-2009 |
20090058939 | MICRO-ELECTROMECHANICAL NOZZLE ARRANGEMENT WITH AN ACTUATING MECHANISM HAVING A SHUTTER MEMBER - Provided is a micro-electromechanical nozzle arrangement for an inkjet printer. The arrangement includes a substrate having a layer of drive circuitry disposed thereon with a passivation layer on top of the drive circuitry layer, the substrate defining an ink inlet channel comprised of a number of discrete openings. The arrangement also includes a roof portion supported on the passivation layer by means of chamber walls to define an ink chamber operatively supplied with ink via the inlet channel, said roof portion defining an ink ejection port. The arrangement further includes an actuating mechanism located inside said chamber, the mechanism including a shutter member displaceable to obstruct fluid flow between the inlet channel and the ejection port or to allow fluid movement between the inlet channel and the ejection port, respectively. | 03-05-2009 |
20090058940 | LIQUID JET HEAD AND IMAGE FORMING APPARATUS - A liquid jet head includes a nozzle member having plural nozzles for jetting a liquid therefrom, a flow path member forming at least a part of a liquid chamber communicating with each of the plural nozzles, and a pressure generating part for generating pressure that is applied to the liquid inside the liquid chamber. The nozzle member and the flow path member are each formed by a metal material. The metal material of the nozzle member has substantially the same composition as the metal material of the flow path member. The metal material of the nozzle member includes crystal particles having an average particle diameter which is less than that of the crystal particles included in the metal material of the flow path member. | 03-05-2009 |
20090066752 | LIQUID JET HEAD - A liquid ejecting head includes a plurality of nozzles each including an ejection outlet for ejecting a droplet, an ejection energy generating element, disposed at a position opposing the ejection outlet, for generating energy for ejecting a droplet, a pressure chamber provided with the ejection energy generating element and fluidly communicating with the ejection outlet, and a supply passage for supplying the liquid to the pressure chamber, wherein the nozzles include a first nozzle and a second nozzle which are connected with respective ones of the supply passages having lengths different from each other, wherein the first nozzle and the second nozzle are, disposed at one end portion with respect to a widthwise direction of an elongated supply chamber for supplying the liquid to the first nozzle, wherein the supply passage for the first nozzle extends in a direction perpendicular to a direction of liquid ejection from the ejection outlet and fluidly communicates with the supply chamber, and wherein the supply passage for the first nozzle extends in a direction parallel with the direction of liquid ejection. | 03-12-2009 |
20090066753 | INK JET PRINT HEAD - An object of the present invention is to provide a reliable ink jet print head that enables small ink droplets to be ejected at a high frequency while preventing possible satellites and mist. In the present invention, a bubbling chamber in which an energy generating element is disposed communicates, via an ejection port portion, with an ejection port | 03-12-2009 |
20090066754 | INK DELIVERY ARRANGEMENT WITH CMOS DRIVEN NOZZLES - An ink delivery arrangement includes a silicon substrate that defines a plurality of ink inlet channels. A CMOS drive circuitry layer is arranged on the silicon substrate. A plurality of nozzle arrangements is positioned on the silicon substrate to be in fluid communication with respective ink inlet channels. Each nozzle arrangement includes an annular nozzle wall about a respective ink inlet channel. A nozzle roof is on the nozzle wall so that the wall and roof define a nozzle chamber, the roof being movable with respect to the wall. A nozzle rim is defined by the nozzle roof so that ink can be ejected from the nozzle chamber when the roof is moved with respect to the wall. An electrically actuated beam is fast with the substrate to receive current from the drive circuitry layer and is connected to the nozzle roof to move the nozzle roof when actuated by the current. | 03-12-2009 |
20090066755 | NOZZLE ARRANGEMENT FOR AN INK JET PRINTER HAVING SYMMETRICALLY ARRANGED ACTUATORS - Provided is a nozzle arrangement for an ink jet printer. The arrangement includes a wafer substrate with a layer of drive circuitry, said substrate defining an ink supply channel through the substrate leading to an ink chamber with sidewalls and a roof having a fixed portion fast with the substrate and a movable portion displaceable with respect to the fixed portion and defining an ink ejection port. The arrangement also includes an ink ejection arrangement for ejecting ink from the ink chamber via the port, said ink ejection arrangement having four symmetrically arranged thermal bend actuators each connected to a respective side of the movable portion to displace said movable portions in a rectilinear manner relative to the fixed portions during ink ejection. | 03-12-2009 |
20090066756 | Printhead Having Nozzle Arrangements With Magnetic Paddle Actuators - Provided is a printhead having a plurality of nozzle arrangements. Each arrangement includes a wafer substrate defining a nozzle chamber, said chamber having a roof wall with an ink ejection port defined therein and an ink supply channel defined through the substrate for supplying the chamber with ink. Each arrangement also includes a magnetic paddle arranged within an electrical coil arrangement which is positioned about the inlet of the nozzle chamber such that the magnetic paddle ejects ink from the chamber via the ejection port when the coil arrangement receives electrical signals. | 03-12-2009 |
20090066757 | NOZZLE ARRANGEMENT WITH AN ACTUATOR HAVING IRIS VANES - Provided is a nozzle arrangement for an inkjet printhead. The nozzle arrangement includes a substrate defining an ink inlet, a roof portion defining an ejection port, the roof portion supported on said substrate by posts, and an actuator arranged between the posts and having four iris vanes each respectively arranged to form a wall of a chamber, said iris vanes operating in an iris-type manner to reduce a volume of the chamber to eject ink from the chamber via the ejection port. | 03-12-2009 |
20090073229 | INK JET PRINTHEAD WITH DISPLACEABLE NOZZLE CROWN - A printhead comprises a substrate defining a plurality of ink inlet channels; a drive circuitry layer positioned on the substrate; and a plurality of nozzle arrangements positioned on the substrate. Each nozzle arrangement comprises a wall portion bounding a respective ink inlet channel, a crown portion defining an outlet through which ink can be ejected, and a skirt portion depending from the crown portion, the crown, skirt and wall portions defining a nozzle chamber in fluid communication with the respective ink inlet channel and the outlet. The printhead further comprises an elongate actuator provided within the nozzle chamber and connected to the crown portion at one end and anchored to the substrate at an opposite end; and conductive pads provided at an anchor point of the elongate actuator with the substrate, the conductive pads being provided between the elongate actuator and the substrate. The elongate actuator receives electrical signals from the drive circuitry via the conductive pads, and upon receipt of electrical signals from the drive circuitry, the actuator is operable to displace towards and away from the substrate such that the crown and ink outlet is also displaced towards and away from the substrate, whereby ink is ejected from the outlet. | 03-19-2009 |
20090073230 | NOZZLE ARRANGEMENT FOR AN INKJET PRINTHEAD HAVING DYNAMIC AND STATIC STRUCTURES TO FACILITATE INK EJECTION - Provided is a nozzle arrangement for an inkjet printhead. The nozzle arrangement includes a substrate with side walls and a roof portion together forming an ink chamber, the substrate defining an ink supply channel leading to the ink chamber, with one side wall defining an aperture. The arrangement also includes an elongate actuator extending through said aperture into the ink chamber, as well as a dynamic structure cantilevered from the side wall below the aperture. Further included is a static structure cantilevered from the side wall below the dynamic structure. The actuator is connected to the dynamic and static structures at a point distal from the aperture such that thermal expansion of the dynamic structure moves the actuator upwards in the chamber to eject ink from the chamber via a port defined in the roof portion. | 03-19-2009 |
20090079792 | DROPLET JETTING HEAD - A droplet jetting head includes a nozzle plate having multiple nozzles arranged in a single line and multiple liquid passages respectively communicating with the multiple nozzles and extending in the same direction, a liquid chamber plate having multiple liquid chambers provided in the multiple liquid passages and configured to respectively communicate with the multiple liquid passages, and multiple piezoelectric elements provided so that an end of each of the piezoelectric elements can face a corresponding one of the multiple liquid chambers. Here, the distance between each of the nozzles and the corresponding liquid chamber communicating with the nozzle is changed in a cycle. | 03-26-2009 |
20090085972 | Nozzle plate, inkjet head, and manufacturing method of the same - A nozzle plate, inkjet head a manufacturing method of the same are disclosed. By using a method of manufacturing a nozzle plate which includes: forming a nozzle by selectively etching one side of a plate substrate, forming a straight portion connecting with the nozzle by selectively etching the other side of the plate substrate, and forming a hydrophobic layer on the one side of the plate substrate, where a window is formed in the hydrophobic layer that opens the nozzle by a circumference greater than a circumference of an end of the nozzle, the meniscus of ink can be formed to a greater size around the nozzle exit, thereby preventing degradations in ink ejection performance due to the vaporization of the solvent, and preventing blockage in the nozzles due to the clogging of particles. | 04-02-2009 |
20090085973 | INK JET PRINTHEAD WITH INK CONTAINMENT FORMATIONS - An ink jet printhead includes a substrate assembly. A plurality of nozzle assemblies is arranged on the substrate assembly. Each nozzle assembly includes a nozzle defining a nozzle opening in fluid communication with a nozzle chamber. A lever arm extends from the nozzle. An actuator is coupled to the lever arm and, upon actuation, causes the lever arm to move the nozzle so that ink in the nozzle chamber is ejected out though the nozzle opening. At least one ink containment formation extends from the substrate assembly and surrounds at least one of the nozzle assemblies to contain leaked ink therein. | 04-02-2009 |
20090085974 | PRINTING NOZZLE ARRANGEMENT HAVING MOVEMENT SENSOR - A printing nozzle arrangement is provided having a substrate having a CMOS layer and a chamber with a fluid inlet and ejection port, a paddle within the chamber, an actuating arm pivotally coupled between the substrate and the paddle and having an arm portion electrically connected to the CMOS layer, and a movement sensor having a moving contact element associated with the arm portion and a fixed contact element associated with the substrate. The arm portion thermally expands when an electrical current is applied thereto via the CMOS layer causing pivoting of the actuating arm thereby displacing the paddle to cause ejection of fluid from the ejection port. The moving contact completes an electrical circuit when contacted with the fixed contact element when the actuating arm pivots to a predetermined extent. | 04-02-2009 |
20090085975 | NOZZLE ARRANGEMENT WITH INK SPREAD PREVENTION PIT - A nozzle arrangement is provided for an inkjet printhead. The nozzle arrangement includes a support defining an ink supply channel. A nozzle chamber structure extends from the support. The nozzle chamber structure defines a nozzle chamber in fluid communication with the ink supply channel and a rim through which ink in the nozzle chamber can be ejected. An actuator mechanism is mounted to the support and is configured to eject ink from within the nozzle chamber out through the rim. An ink spread prevention wall extends from the support and, together with the nozzle chamber structure, defines a pit around the rim to prevent the spread of ink. | 04-02-2009 |
20090085976 | NOZZLE ARRANGEMENT FOR AN INKJET PRINTHEAD HAVING AN INK EJECTING ROOF STRUCTURE - Provided is a nozzle arrangement for an inkjet printhead. The nozzle arrangement includes a substrate defining an ink inlet channel therethrough, and side walls arranged on the substrate to define an ink chamber operatively supplied with ink via the channel. The arrangement also includes an anchor fast with the substrate proximate one side wall, and an ink ejecting roof structure pivotally mounted on the substrate and positioned as a roof over the side walls to enclose the chamber, the structure fast with the anchor via a thermal expansion actuator. | 04-02-2009 |
20090091601 | Inkjet Nozzle Utilizing Electrostatic Attraction Between Parallel Plates - Provided is an inkjet nozzle arrangement which includes a wafer base defining an ink chamber with an ink inlet channel and an ink ejection port. The arrangement also includes an upper electrode plate and a lower electrode plate separated by at least one polytetrafluoroethylene (PTFE) layer within the chamber. The upper plate has a corrugated portion which concertinas upon movement of said top plate, wherein ink is ejected from the ink ejection port through the utilization of attraction and related movement between the plates when a potential difference is applied therebetween. | 04-09-2009 |
20090096834 | Printhead Nozzle Arrangement With A Roof Structure Having A Nozzle Rim Supported By A Series Of Struts - The invention relates to a nozzle arrangement for an inkjet printhead. The nozzle arrangement has a substrate with a layer of drive circuitry, the substrate defining an ink chamber with an ink supply channel etched through the substrate. The roof structure has a roof layer over the chamber which includes a nozzle rim, actuators, and a series of struts. The nozzle rim is positioned about an ejection port defined in the roof layer above the chamber. The actuators are radially spaced about, and displaceable with respect to, the nozzle rim, with each actuator configured to thermally expand upon receiving current from the drive circuitry. This expansion moves the actuators into the chamber to increase a fluid pressure inside the chamber to eject a drop of ink via the ejection port. The struts are interspersed between the actuators to support the nozzle rim to the roof layer. | 04-16-2009 |
20090096835 | RECORDING HEAD - An inkjet recording head includes a substrate having a discharge port surface on which discharge ports configured to discharge a liquid are formed. The discharge port surface of the substrate includes a plurality of point-symmetrical continuous grooves which are centered around each discharge port. The plurality of point-symmetrical continuous grooves differs in shape between in a region near each discharge port and in another region. | 04-16-2009 |
20090102887 | LIQUID EJECTION HEAD - A line head that minimizes the influence of strain due to generation of thermal stress and minimizes the influence on printing results even when only the head chips are suddenly heated is provided. First strain-reducing portions | 04-23-2009 |
20090109260 | INKJET PRINTHEAD COMPRISING NOZZLE PLATE HAVING IMPROVED ROBUSTNESS - An inkjet printhead comprising a reinforced bi-layered nozzle plate structure spanning across a plurality of nozzles is provided. Typically, the nozzle plate structure comprises: a first nozzle plate spanning a plurality of nozzles, the first nozzle plate having a plurality of cavities defined therein; photoresist filling the cavities; and a second nozzle plate covering said the first nozzle plate and the photoresist. | 04-30-2009 |
20090115818 | DROPLET EJECTION HEAD AND DROPLET EJECTION APPARATUS - A droplet ejection head comprises: a substrate having first through-holes forming reservoir chambers, a second through-hole forming a supply chamber, and a bonding film on one surface; a nozzle plate having nozzles for ejecting ejection liquid and one surface contacting the bonding film, the nozzle plate is bonded to the substrate through the bonding film to cover the first through-holes and the second through-hole; a sealing plate on another surface of the substrate covering the first through-holes, one surface of the sealing plate contacting the substrate's another surface; and piezoelectric means on another surface of the sealing plate for driving the droplet ejection head. The bonding film containing an Si-skeleton constituted of constituent atoms containing silicon atoms, with siloxane (Si—O) bonds and elimination groups bonded to the silicon atoms, the constituent atoms being randomly bonded together, and the elimination groups existing near a surface of the bonding film. | 05-07-2009 |
20090122112 | PRINTHEAD ARRANGEMENT HAVING NOZZLE ASSEMBLIES WITH GUTTER FORMATIONS - Provided is a printhead arrangement for a printer. The arrangement includes a wafer substrate and a layer of drive circuitry deposited on the substrate, as well as a plurality of nozzle assemblies formed on the wafer substrate by means of micro-electromechanical (MEMS) techniques. Each of these assemblies includes an ink chamber and at least one ink supply channel etched into the substrate, a heater element suspended in the ink chamber, and a nozzle plate defining two ink ejection nozzles, the plate having gutter formations about each nozzle to facilitate ink run-off from the nozzle to prevent nozzle contamination. The drive circuitry facilitates activation of the heater element. | 05-14-2009 |
20090128603 | Droplet Deposition Method and Apparatus - In an ink jet printhead have an elongate ink chamber and a nozzle at one end, a continuous flow of ink is provided through a high impedance channel communicating with the chamber close to the nozzle. Ink is ejected through the nozzle by generating longitudinal acoustic waves in the fluid chamber. A high velocity ink flow into the chamber from the channel sweeps away from the nozzle debris or bubbles that might otherwise block the nozzle. | 05-21-2009 |
20090128604 | INKJET NOZZLE WITH PADDLE LAYER SANDWICHED BETWEEN FIRST AND SECOND WAFERS - The invention provides for an inkjet nozzle which includes a first wafer, a second wafer and a paddle layer. The first wafer has active drive circuitry together with an ink jet print nozzle formed therein. The second wafer has an ink channel formed therein. The paddle layer is sandwiched between the first and second wafers in a chamber complementarily defined by the wafers. The paddle layer is arranged in signal communication with the active drive circuitry, so that ink supplied via the ink channel is ejected via the print nozzle upon actuation of the paddle layer by the circuitry. | 05-21-2009 |
20090128605 | LIQUID JET HEAD AND LIQUID JET APPARATUS - A liquid jet head that pressurizes liquid and ejects the liquid through nozzles includes: a nozzle opening surface having two nozzle rows each having openings of the nozzles linearly aligned in plurality; a pair of wall surfaces intersecting the nozzle opening surface at end sections of the nozzle opening surface, the wall surfaces being aligned with the nozzle rows, respectively; and pressure chambers that are in communication with the nozzles for reserving the liquid to be pressurized, formed in each of the pair of wall surfaces, wherein the liquid pressurized in the pressure chambers flows in a direction along each of the pair of wall surfaces, respectively. | 05-21-2009 |
20090128606 | INTEGRATED CIRCUIT (IC) INCORPORATING ROWS OF PROXIMAL INK EJECTION PORTS - The present invention relates to an ink ejection integrated circuit (IC) for a printhead. The IC includes rows of elongate nozzle arrangements. Each nozzle arrangement defines an ink ejection port at one end and has an internal cantilevered actuator anchored at the other end so that the actuator can move to eject ink out though the ink ejection port. The rows are arranged in pairs with the ports of one of the rows being proximally located to the ports of the other row, for each pair. | 05-21-2009 |
20090141082 | PRINTHEAD WITH REDUNDANT NOZZLE CHAMBER INLETS FOR MINIMIZING EFFECTS OF BLOCKAGES - A printhead comprising a plurality of inkjet nozzle assemblies is provided. Each nozzle assembly comprises a nozzle chamber formed on a substrate. The nozzle chamber comprises a roof spaced apart from the substrate and sidewalls extending between the roof and the substrate. The nozzle chamber has an ink ejection opening defined in the roof, a first ink inlet defined in one of the sidewalls, and a second ink inlet defined in a floor of the nozzle chamber. Each ink inlet is in fluid communication with a common ink reservoir. The nozzle assembly further comprises an actuator for ejection of ink through the ink ejection opening. | 06-04-2009 |
20090141083 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - An inkjet printhead and a method of manufacturing the same. The inkjet printhead includes a silicon on insulator (SOI) substrate including a lower silicon substrate, a middle insulating layer, an upper silicon substrate, and an ink feed hole, the ink feed hole penetrates the SOI substrate to supply ink, an insulating layer stacked on the upper silicon substrate of the SOI substrate, a chamber layer stacked on the insulating layer in which a plurality of ink chambers filled with ink supplied from the ink feed hole is formed, a nozzle layer stacked on the chamber layer in which a plurality of nozzles is formed to correspond to the ink chambers, a plurality of heaters formed on the insulating layer which heats ink in the ink chambers to generate bubbles and eject ink through the nozzles, and a driving circuit region on which a driving circuit is formed to drive the heaters. | 06-04-2009 |
20090147049 | NOZZLE PLATE OF INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - Provided are a nozzle plate of an inkjet printhead and a method of manufacturing the same. The nozzle plate includes: a substrate including a plurality of nozzles; and a plurality of first grooves formed on the surface of a substrate around the nozzles. In this structure, ink remaining on the surface of the nozzle plate can be efficiently removed. | 06-11-2009 |
20090147050 | LIQUID EJECTING HEAD AND MANUFACTURING DIMENSION CONTROL METHOD - A liquid ejecting head includes a substrate, a nozzle forming member for forming on a principal surface of the substrate a nozzle comprising a flow passage of liquid and an orifice for ejecting the liquid, and a dummy pattern. The dummy pattern has substantially the same dimension as at least a part of the nozzle and is formed so that a cross section of the dummy pattern is exposed at an end surface of the nozzle forming member. | 06-11-2009 |
20090147051 | LIQUID DROPLET EJECTION HEAD AND LIQUID DROPLET EJECTION APPARATUS - A liquid droplet ejection head having superior dimensional accuracy, superior chemical resistance and high reliability and being capable of printing in high quality for a long period of time, and a liquid droplet ejection apparatus provided with such a liquid droplet ejection head and therefore being capable of providing high reliability are provided. The liquid droplet ejection head includes: a substrate having first through-holes that serve as ejection liquid reservoir chambers for reserving an ejection liquid and a second through-hole that serves as an ejection liquid supply chamber for supplying the ejection liquid to the ejection liquid reservoir chambers, the substrate having one surface and the other surface opposite to the one surface; a nozzle plate having nozzles that ejects the ejection liquid in the form of liquid droplets, the nozzle plate provided on a side of the one surface of the substrate so as to cover the first through-holes and the second through-hole of the substrate; a sealing plate provided on a side of the other surface of the substrate so as to cover the first through-holes of the substrate; a driving means that drives the liquid droplet ejection head to eject the ejection liquid from the nozzles; a first bonded portion through which the substrate and the nozzle plate are bonded together; and a second bonded portion through which the substrate and the sealing plate are bonded together, wherein at least one of the first and second bonded portions includes a bonding film formed by drying a liquid coating formed of a liquid material containing a silicone material composed of silicone compounds, and wherein the bonding film bonds the substrate and at least one of the nozzle plate and the sealing plate together due to a bonding property developed in the bonding film by applying energy thereto. | 06-11-2009 |
20090153619 | INKJET NOZZLE ARRANGEMENT - A nozzle arrangement is provided for an inkjet printer. The nozzle arrangement includes a substrate assembly defining an outlet port through which ink can be ejected. A retainer is mounted to the substrate assembly and defines an internal coil chamber in which a coil is retained. A plunger assembly is engaged with the retainer to form an ink chamber in fluid communication with the outlet port. The plunger assembly includes a plunger that is able to move toward the outlet port and reduce the volume of the ink chamber. Drive and control circuitry is electrically coupled to the coil, and is configured to energize the coil and cause the plunger to move toward the outlet port so that ink is ejected from the outlet port. | 06-18-2009 |
20090153620 | LIQUID EJECTION HEAD - A liquid ejection head includes a substrate having a supply port through which liquid is supplied and a plurality of energy generating elements provided along the supply port and generating energy for ejecting the liquid, a nozzle plate having nozzles provided therein in correspondence with the energy generating elements, and a channel provided between the substrate and the nozzle plate. The nozzle plate has a groove surrounding the channel. The groove includes a first groove provided in one surface of the nozzle plate at which the nozzle plate is bonded to the substrate, and a second groove provided in another surface of the nozzle plate in which the nozzles are provided. Edges of the first groove have sawtooth shape with a number of very small notches and edges of the second groove are substantially straight. | 06-18-2009 |
20090167818 | Highly viscous fluid discharging apparatus and highly viscous fluid discharging method - A highly viscous fluid discharging apparatus includes: a nozzle including a discharge opening having a predetermined inner volume, and a widened portion formed at a position immediately before the discharge opening and expanding from the discharge opening; a plunger capable of opening and closing the discharge opening by causing the leading-end portion of the plunger to move away from and to move towards the widened portion; and a driver configured to move the plunger in a direction of closing the discharge opening against a biasing force that biases the plunger in a direction of opening the discharge opening. During a stand-by period, the discharge opening is kept closed by an action of the plunger that is caused by the driver to press the leading-end portion onto the widened portion. | 07-02-2009 |
20090179963 | PRINTHEAD WITH EXTERIOR SURFACE PROFILED FOR WIPING MAINTENANCE STATION - A printhead assembly with an elongate printhead IC having a nozzle face defining an array of nozzles, and a support structure for supporting the elongate printhead IC on an external surface such that its length is transverse to a media feed direction through the printer. The external surface has a section that is flush with a long side edge of the elongate printhead IC. | 07-16-2009 |
20090185003 | HYDROPHOBIC NOZZLE PLATE STRUCTURES FOR MICRO-FLUID EJECTION HEADS - A nozzle plate for a micro-fluid ejection head, a method of making a hydrophobic nozzle plate, and a method for improving the resiliency of a nozzle plate. The nozzle has a photoimageable hydrophobic polycyclic polyolefin layer derived from an epoxy functionalized polynorbornene. | 07-23-2009 |
20090185004 | DROPLET DISCHARGE HEAD AND PATTERN FORMING DEVICE - A droplet discharge head includes: a droplet discharge head; and a nozzle plate that has a nozzle and is provided to the droplet discharge head. The nozzle plate is made of a peltier element. A droplet of a functional liquid containing a functional material is sequentially discharged from the nozzle to a substrate so as to form a pattern on a surface of the substrate. | 07-23-2009 |
20090185005 | LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND METHOD FOR MANUFACTURING LIQUID EJECTING HEAD - A liquid ejecting head including a plurality of nozzle orifices for liquid ejection, a reservoir plate made of rolled metal rolled in a first direction which includes a liquid reservoir which extends in a longitudinal direction that is capable of communicating with the plurality of nozzle orifices, and a compliance plate laminated on the reservoir plate which is made of rolled metal rolled in a second direction, the compliance plate including a compliance portion that forms a surface of the liquid reservoir which is also capable of absorbing the pressure in the liquid reservoir. The second direction is parallel to the longitudinal direction of the liquid reservoir and the first direction is perpendicular to the second direction. | 07-23-2009 |
20090185006 | LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND METHOD FOR MANUFACTURING LIQUID EJECTING HEAD - A liquid ejecting head including a plurality of nozzle orifices for liquid ejection, a reservoir plate made of rolled metal rolled in a first direction which includes a liquid reservoir communicating with the plurality of nozzle orifices, and a compliance plate made of rolled metal rolled in a second direction, laminated on the reservoir plate, and having a thin portion that is formed by forming a recess which extends in the lengthwise direction in the opposite surface of the reservoir plate from the surface facing the liquid reservoir, the thin portion serving as a wall of the liquid reservoir. The second direction is perpendicular to the longitudinal direction of the recess and the first direction is perpendicular to the second direction. | 07-23-2009 |
20090195605 | MANUFACTURING METHOD OF NOZZLE PLATE FOR LIQUID EJECTION HEAD, NOZZLE PLATE FOR LIQUID EJECTION HEAD, AND LIQUID EJECTION HEAD - A manufacturing method of nozzle plate for liquid ejection head includes, providing a substrate having a first base material of Si and a second base material, of which the etching rate in Si anisotropic dry etching is lower then that of Si, provided on one side of the first base material, forming a film as a second etching mask on the surface of the second base material, forming a second etching mask pattern having a small-diameter opening shape in the second etching mask film, etching until the etching part is extended through the second base material, forming a film as a first etching mask film on the surface of the first base material, forming a first etching mask pattern having a large-diameter opening shape in the first etching mask film, and Si anisotropic dry etching until the etched part is extended through the first base material. | 08-06-2009 |
20090195606 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS HAVING SAME - A liquid ejecting head includes a passage unit made by laminating a plurality of plates including a first plate having a first through-hole with a first size and a second plate having a second through-hole with a second size which is larger than the first size. The first plate and the second plate are bonded with adhesive so that the first through-hole and the second through-hole in communication with each other. The affinity for the adhesive to bond to the inner peripheral surface of the second through-hole is set to be at least higher than the affinity for the adhesive to bond to the area around the opening of the first through-hole. Adhesive that flows out from between the first plate and the second plate at the time of bonding of the first plate and the second plate is guided to the inner peripheral surface of the second through-hole. | 08-06-2009 |
20090195607 | Inkjet printhead nozzle arrangement with movement transfer mechanism. - A nozzle arrangement for an inkjet printhead. The nozzle arrangement comprises a substrate incorporating drive circuitry and defining an ink inlet channel; side walls extending from the substrate; a roof fast with the side walls and defining an ink ejection port in fluid communication with an ink chamber defined by the roof, the side walls, and the substrate, the ink chamber being in fluid communication with the ink inlet channel; an ink ejection member interposed between the ink inlet channel and the ink ejection port such that reciprocal movement of the ink ejection member causes ejection of ink from the ink ejection port; an actuator connected to the drive circuitry at a fixed end and having a free end reciprocally displaceable with respect to the substrate on receipt of an electrical signal from the drive circuitry; and a motion transmitting structure interposed between the free end of the actuator and the ink ejection member. The motion transmitting structure has an effort formation, a lever arm formation, and a load formation interconnecting the effort formation and the lever arm formation. The effort formation is adapted to engage with the free end of the actuator arm, and the lever arm formation is adapted to engage with the ink ejection member. | 08-06-2009 |
20090195608 | Printhead Having Laminated Ejection Fluid Distributors - A printhead is provided having a substrate with a plurality of ejection nozzles a plurality of adjacently arranged structures laminated with the substrate. Each nozzle has an inlet for supplying ejection fluid to the nozzle. The structures have a plurality of passages distributing the ejection fluid to the inlets of the nozzles. Each structure has elongate apertures to the passages. The long dimension of the elongate apertures in the abutting sides of adjacent structures are angled relative to each other. | 08-06-2009 |
20090201338 | PHOTOIMAGEABLE DRY FILM FORMULATION - The present disclosure relates to photoresist compositions suitable for thin layer photoimageable nozzle plates for micro-fluid ejection devices and methods of making and using such thin layer nozzle plates. The photoresist compositions may comprise a high-molecular weight phenoxy resin, a di-functional epoxy resin, and a multi-functional epoxy resin. | 08-13-2009 |
20090201339 | Printhead Nozzle Having Shaped Heating Element - A printhead nozzle is provided having a substrate having drive circuitry and an inlet for ejection fluid, a fluid chamber having an outlet for ejection fluid, the fluid chamber arranged on the substrate to receive ejection fluid from the inlet, and a heating element connected to the drive circuitry, the heating element having a relatively reduced volume proximate the drive circuitry and being arranged to be heated by the drive circuitry to cause the ejection fluid in the fluid chamber to be ejected through the outlet. | 08-13-2009 |
20090201340 | Nozzle Arrangement With Different Sized Heater Elements - A nozzle arrangement for ejecting ink comprises a substrate assembly defining an ink supply passage and incorporating a drive circuitry layer; a heater positioned on the substrate assembly, the heater having a pair of heater elements connected to electrical contacts, which electrical contacts are electrically coupled to the drive circuitry layer; and a nozzle chamber structure extending from said heater to define a nozzle chamber in fluid communication with the ink supply passage and in which the heater element is located, the nozzle chamber structure defining an aperture through which ink in the nozzle chamber is ejected when current is supplied from the drive circuitry layer to the heater element. The electrical contacts each have an enlarged cross-sectional area relative to the cross-section area of the heater element. A first heater element of the pair of heater elements has a surface area larger than that of the second heater element of the pair of heater elements. | 08-13-2009 |
20090207208 | Nozzle Arrangement Using Unevenly Heated Thermal Actuators - A nozzle arrangement for an inkjet printer comprises a wafer defining an ink supply channel and a nozzle chamber in fluid communication with the ink supply channel; a drive circuitry layer positioned on the wafer; a plurality of actuator devices positioned on the wafer and the drive circuitry layer to cover the nozzle chamber, each actuator device comprising an internal serpentine conductive core surrounded by a polytetrafluoroethylene (PTFE) layer; and an ink ejection port in fluid communication with the nozzle chamber. The plurality of actuator devices are radially positioned around the ink ejection port and adapted to bend into the nozzle chamber, and the internal serpentine conductive core is disposed within the PTFE layer to heat the PTFE layer unevenly. | 08-20-2009 |
20090219341 | LIQUID EJECTION HEAD AND METHOD OF PRODUCING THE SAME - A liquid ejection head, including: plates including a nozzle plate in which nozzles for ejecting liquid are formed, and stacked on each other with the nozzle plate being as an outermost plate, wherein the nozzle plate includes a first area in which the nozzles are formed and a second area adjacent to the first area and located on a plate-side of the first area in a plates-stack direction, on which plate-side at least one of the plates different from the nozzle plate is located, wherein the nozzle plate further includes a first nozzle plate positioner formed in the first area and a second nozzle plate positioner larger than the first nozzle plate positioner and formed in the second area, and wherein each of the at least one of the plates includes a plate positioner formed therein and at least partly overlapping the first nozzle plate positioner in the plates-stack direction. | 09-03-2009 |
20090225134 | Fluid discharge device, and a printer and media processing device that use the fluid dicharge device - A fluid discharge device suppresses discharge defects caused by adhesion of fluid spray and maintains a good fluid discharge condition. A printer and a media processing device include the fluid discharge device. An inkjet head has ink nozzles for discharging ink. A box-shaped head cap | 09-10-2009 |
20090231391 | LIQUID JET HEAD AND A LIQUID JET APPARATUS - A liquid jet head includes: a pressure generation element; a nozzle plate which is provided with a nozzle opening; a pressure generating chamber plate in which a pressure generating chamber for communicating to the nozzle opening is formed; and a nozzle communication plate in which a communication through hole for communicating the one pressure generating chamber with a plurality of nozzle openings is provided between the nozzle plate and the pressure generating chamber plate, so that, for example, a plurality of the nozzle openings can be disposed in a lined-up direction of the pressure generating chambers at a predetermined pitch smaller than a lined-up pitch of the pressure generating chamber. | 09-17-2009 |
20090231392 | LIQUID DISCHARGING HEAD WITH INCREASED STRENGTH AND IMAGE FORMING APPARATUS INCLUDING THE LIQUID DISCHARGING HEAD - A liquid discharging head includes a plurality of nozzles for discharging liquid, a channel member formed of a metal plate, and a contacted member for being contacted by the channel member. The channel member includes a plurality of liquid chambers, each of which is connected to one of the plurality of nozzles, and a separation wall for separating adjacent liquid chambers from each other. The separation wall includes a center portion and a contact surface. The center portion is provided at a center of the separation wall in a long direction of the separation wall. The contact surface contacts the contacted member, and is tilted in a cross-section of at least the center portion of the separation wall taken in a short direction of the separation wall. | 09-17-2009 |
20090231393 | RECORDING APPARATUS AND RECORDING APPARATUS MANUFACTURING METHOD - A recording apparatus includes a first recording head. The first recording head includes a first nozzle plate. The first nozzle plate includes a first group of nozzle holes and a first positioning hole configured to position the first recording head. A second recording head is adjacent to the first recording head in a first direction. The second recording head includes a second nozzle plate. The second nozzle plate includes a second plurality of nozzle holes and a second positioning hole configured to position the second recording head. The first positioning hole and the second positioning hole are aligned in a straight line extending in the first direction. | 09-17-2009 |
20090237454 | INKJET RECORDING HEAD, INKJET RECORDING DEVICE, AND METHOD FOR MANUFACTURING THE INKJET RECORDING HEAD - In a method for manufacturing an inkjet recording head which includes a pressure generation chamber supplied with ink fluid and a nozzle opening leading to the pressure generation chamber, the method includes: (a) forming a first trench which serves as the pressure generation chamber on a first surface of a first substrate; (b) forming a second trench which serves as the nozzle opening on a bottom surface of the first trench; (c) forming a sacrificial film on the first trench and the second trench; (d) forming a diaphragm on the sacrificial film as well as on the first surface of the first substrate; (e) forming a piezoelectric element on the diaphragm; (f) grinding a second surface of the first substrate so as to open a bottom surface of the second trench; (g) forming an opening which exposes the sacrificial film on the first surface of the first substrate; and (h) removing the sacrificial film through the opening. | 09-24-2009 |
20090237455 | INKJET HEAD - An inkjet head may include a main-body block, which may include a reservoir configured to store ink, an ink supply port configured to supply the ink to the reservoir, and a plurality of nozzles in fluid communication with the reservoir via an ink flow path. The inkjet head may include a supply valve mechanism attached to the main-body block and configured to selectively set the ink supply port in one of a sealed state and an open state. The inkjet head may further include an attachment unit configured to be removably attached to the main-body block. The attachment unit may include a supply channel configured to supply the ink to the ink supply port. The supply valve mechanism may set the ink supply port in the sealed state when the attachment unit is detached from the main-body block, and set the ink supply port in the open state when the attachment unit is attached to the main-body block. | 09-24-2009 |
20090237456 | Inkjet Printhead With Paddle For Ejecting Ink From One Of Two Nozzles - An inkjet printhead includes a nozzle chamber structure defining a nozzle chamber. The nozzle chamber structure further defines a pair of ink ejection nozzles and an ink supply channel in fluid communication with the nozzle chamber. A movable paddle is disposed within the nozzle chamber at a location between the ink ejection nozzles. An actuator is attached to the paddle and, upon actuation, can reciprocate the paddle toward and away from a first one of the ink ejection nozzles so that ink in the nozzle chamber can be ejected out through that first nozzle. | 09-24-2009 |
20090251508 | Printer With Reduced Co-Efficient Of Static Friction Nozzle Plate - An inkjet printer with a nozzle plate that has an exterior surface with formations for reducing its co-efficient of static friction. By reducing the co-efficient of static friction, there is less likelihood that paper dust or other contaminants will clog the nozzles in the nozzle plate. Static friction, or “stiction” as it has become known, allows dust particles to “stick” to nozzle plates and thereby clog nozzles. By patterning the exterior of the nozzle plate with raised formations, dust particles can only contact the outer extremities of each formation. This reduces friction between the particles and the nozzle plate so that any particles that contact the plate are less likely to attach, and if they do attach, they are more likely to be removed by printhead maintenance cleaning cycles. | 10-08-2009 |
20090256887 | LIQUID DISCHARGE METHOD AND LIQUID DISCHARGE HEAD - A liquid discharge method allowing a liquid inside a flow path to be heated by a heat generating element ( | 10-15-2009 |
20090256888 | Printhead Having Ejection Nozzle Integrated Circuits - A printhead is provided having a support member for mounting the printhead in a printer, and a plurality of integrated circuits supported by the support member. Each integrated circuit has ejection nozzles defined on a substrate to eject fluid from an ejection side of the substrate and the support member is configured to supply the fluid to a supply side of the substrate. The ejection and supply sides being opposite sides of the substrate. | 10-15-2009 |
20090262163 | INKJET NOZZLE INCORPORATING PISTON ACTUATOR - A nozzle for an inkjet printer comprises a roof layer defining a nozzle port through which ink is ejected; a substrate layer fast with the roof layer and defining a nozzle chamber wall; and an actuator assembly fast with the substrate layer and comprising a support. The actuator assembly comprises a lever arm cantilevered to extend from the support and terminating in a piston. The piston is positioned within a nozzle chamber defined by the nozzle chamber wall. The nozzle chamber wall is provided along a height thereof with a gap, the gap being dimensioned to pass the lever arm therethrough. | 10-22-2009 |
20090267990 | THERMAL INKJET PRINT HEAD - Provided is a thermal inkjet printhead that includes a substrate, which may comprise an ink feed hole for supplying ink, a chamber layer, which is stacked on the substrate, and which comprises an ink chamber that is filled with the ink supplied from the ink feed hole, a heater, which is prepared inside the ink chamber and heats the ink, an island, which is formed on the substrate, and which is prepared at an ink inlet port of the ink chamber, and a nozzle layer, which is stacked on the chamber layer, and which comprises a nozzle for ejecting the ink. The walls of the ink chamber and the island that face each other are symmetrical with respect to the center of the nozzle. | 10-29-2009 |
20090273637 | LIQUID EJECTION HEAD - A print head that ejects ink supplied through an ink supply port can prevent the size of satellites from being reduced while inhibiting an increase in resistance to an ink flow. In the print head, ink supply ports are arranged on both sides of a plurality of channels. A predetermined number of ink supply ports are arranged at least at one side of the ink channel all over the range of the arrangement of the channels. One side of each of the plurality of channels is connected via the common liquid chamber to the liquid supply port located so as to extend in a direction in which the channels are arranged. | 11-05-2009 |
20090273638 | Printhead Integrated Circuit With More Than Two Metal Layer CMOS - An inkjet printhead that has an array of droplet ejectors supported on a single printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. The printhead IC also has drive circuitry for providing the actuators with power, the drive circuitry having patterned layers of metal separated by interleaved layers of dielectric material. The layers of metal being interconnected by conductive vias, wherein the drive circuitry has more than two of the metal layers and each of the metal layers are less than 2 microns thick. | 11-05-2009 |
20090273639 | Printhead Integrated Circuit With Actuators Proximate Exterior Surface - An inkjet printhead that has an array of droplet ejectors supported on a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. The actuator in each of the droplet ejectors is configured to generate a pressure pulse in a quantity of ink adjacent the nozzle aperture, the pressure pulse being directed towards the nozzles aperture such that the droplet of ink is ejected through the nozzle aperture. The actuator is positioned in the droplet ejector such that it is less than 30 microns from an exterior surface of the printhead surface layer. | 11-05-2009 |
20090273640 | Printhead Integrated Circuit With Small Nozzle Apertures - An inkjet printhead that has an array of droplet ejectors supported on a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. The nozzle apertures each have an area less than 600 microns squared. | 11-05-2009 |
20090273641 | Printhead IC With Ink Supply Channel For Multiple Nozzle Rows - An inkjet printhead that has an array of droplet ejectors supported on a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. The array of droplet ejectors is arranged in a plurality of rows and an ink supply channel extending parallel to the plurality of rows, and an inlet conduit extending from the supply channel to an opposing surface of the printhead IC. | 11-05-2009 |
20090273642 | Printhead IC With Low Velocity Droplet Ejection - An inkjet printhead that has an array of droplet ejectors supported on a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. The droplet ejectors are configured to eject ink droplets at a velocity less than 4.5 m/s. | 11-05-2009 |
20090273643 | Printhead Integrated Circuit With Ink Supply Through Wafer Thickness - An inkjet printhead that has an array of droplet ejectors supported on one face of a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. The printhead IC having a printhead surface layer on one face which defines all the nozzle apertures on the array. The printhead IC also having a back face that is opposite said one face on which the printhead surface layer is formed, and at least one supply conduit extending from the back face to the array of droplet ejectors. The at least one supply conduit is in fluid communication with a plurality of the droplet ejectors in the array. | 11-05-2009 |
20090278894 | Inkjet Printhead Employing Active And Static Ink Ejection Structures - An inkjet printhead includes a wafer having a droplet ejection side and a liquid supply side opposite the droplet ejection side; a plurality of active ink ejection structures formed on the droplet ejection side of the wafer, each active ink ejection structure partially defining a nozzle chamber, and defining an ink ejection port; a plurality of individual fluid passages formed in the wafer, each fluid passage providing fluid to corresponding nozzle chambers; a plurality of static ink ejection structures formed on the droplet ejection side of the wafer and inside of corresponding active ink ejection structures, each static ink ejection structure defining a nozzle chamber with a corresponding active ink ejection structure; and droplet ejection actuators respectively corresponding to each active ink ejection structure. The droplet ejection actuators are formed on the droplet ejection side of the wafer and attached to respective active ink ejection structures. The droplet ejection actuators are operable to displace an active ink ejection structures towards a corresponding static ink ejection structure to effect ejection of fluid in the nozzle chamber through the ink ejection port. | 11-12-2009 |
20090295869 | Nozzle Plate for an Ink Jet Print Head Comprising Stress Relieving Elements - The invention relates to an ink jet print head structure for printing devices, comprising a substrate in which one or more slots are realized and a nozzle plate connected to the substrate. The nozzle plate defines a first axis (X) and a second perpendicular axis (Y) and comprises a plurality of nozzles from which ink is ejected in fluid communication with the slots. The slots extends along the second axis (Y). A plurality of strip-like stress relief elements is realized on the nozzle plate, the plurality of stress relief elements is disposed so to extend along the Y axis, and each stress relief element of the plurality defines an aperture on a free surface of said nozzle plate. In addition, the total X projections of all apertures defined by the plurality of stress relief elements along the first (X) axis has a resulting length comprised between 10% and 55% of the overall width of the nozzle plate along the same first axis (X). | 12-03-2009 |
20090295870 | NOZZLE PLATE FOR IMPROVED POST-BONDING SYMMETRY - A nozzle plate for bonding to a chip for configuring a printhead of a printing device is disclosed. The chip comprises a plurality of energizing elements. The nozzle plate comprises a substrate layer, an adhesive layer and a plurality of nozzle holes perforated in the substrate layer and the adhesive layer. The each nozzle hole is capable of being associated with an energizing element of the plurality of energizing elements. The each nozzle hole comprises an asymmetric flow-feature configured by ablating at least a portion of a wall of the each nozzle hole prior to bonding the nozzle plate to the chip. The nozzle plate provides a substantially symmetrical flow-feature for the each nozzle hole on bonding to the chip. | 12-03-2009 |
20090295871 | Inkjet Nozzle Assembly With Actuatable Nozzle Chamber - A nozzle assembly for an inkjet printhead includes a substrate assembly defining an ink inlet aperture; a nozzle comprising a wall portion extending from the substrate assembly to bound the ink inlet aperture, and a moveable crown portion from which a skirt portion depends, the wall portion and the skirt portion defining a peripheral wall of a nozzle chamber; an anchor extending from the substrate assembly; and a thermal bend actuator connected between the anchor and a lever arm. The lever arm is in turn connected to the nozzle. The thermal bend actuator, upon actuation, moves the crown and skirt portions relative to the wall portion to eject ink in the nozzle chamber out through the nozzle opening. The skirt portion and the wall portion are separated by a gap, and the wall portion is shaped with an inwardly directed lip in the vicinity of the gap, the inwardly directed lip facilitating the formation of a fluidic seal effected via surface tension across the gap. | 12-03-2009 |
20090303288 | Droplet Jet Unit and Droplet Jet Device - An ink-jet head ( | 12-10-2009 |
20090303289 | LIQUID DISCHARGE RECORDING HEAD AND RECORDING APPARATUS - A liquid discharge recording head includes a flow passage forming member having discharge ports and a flow passage, the discharge ports configured to discharge droplets, the flow passage communicating with the discharge ports. The flow passage forming member also has a first opening and a second opening, the first opening provided at a surface of the flow passage forming member with the discharge ports, the second opening causing the inside of the first opening to communicate with the outside of the flow passage forming member through a communication passage. | 12-10-2009 |
20090303290 | Nozzle Arrangement With Actuator Slot Protection Barrier - A nozzle arrangement for an inkjet printer includes a wafer substrate defining a supply channel; side and roof walls positioned on the substrate, said walls defining a nozzle chamber operatively supplied with ink via the supply channel, and a nozzle rim defined in the roof wall; an actuator device passing through a slot in a side wall of the chamber, the device configured to operatively eject ink from the nozzle rim; and an actuator slot protection barrier mounted on the actuator device, and extending at a normal to the actuator device, the actuator slot protection barrier located proximate the slot and configured to reduce ink wicking on the nozzle rim during ejection of ink from the nozzle rim. | 12-10-2009 |
20090309928 | INK JET PRINT HEAD, AND METHOD OF MANUFACTURING INK JET PRINT HEAD - An object of the present invention is to provide an ink jet print head that prevents test terminals from coming into contact with ink or moisture and thus being corroded or damaging other circuits or wires. To accomplish the object, a nozzle forming member located in the vicinity of an area with the test terminals arranged therein is separated from a nozzle forming member located in the remaining area so as to have a reduced volume. | 12-17-2009 |
20090315946 | Head chip, liquid jet head, and liquid jet device - To prevent an adhesive from flowing into nozzle, there is provided a head chip including: an actuator plate having a plurality of grooves; a drive electrode formed on each side wall of the grooves; a cover plate which has an introduction aperture; a nozzle plate fixed to an end surface of the actuator plate through an adhesive, and has a plurality of nozzles which communicate with the of grooves, respectively; and a number of escape holes formed between the nozzle plate and the actuator plate, corresponding to the nozzles, in which each escape hole has a contour which surrounds a periphery of each nozzle with the contour being spaced apart from a contour of each nozzle by at least a given distance, and in which the adhesive remaining at a time of fixing the nozzle plate is accumulated in the escape holes. | 12-24-2009 |
20090322827 | DECREASED ACTUATION VOLTAGE IN MEMS DEVICES BY CONSTRAINING MEMBRANE DISPLACEMENT WITHOUT USING CONDUCTIVE "LANDING PAD" - The present application is directed to electrostatic actuators, and methods of making electrostatic actuators. In one embodiment, an electrostatic actuator of the present application can include an electrode layer and a mechanical member. The electrode layer can include a removed portion that is free of a landing pad. The mechanical member can be positioned in proximity to the electrode layer so as to provide a gap therebetween. The mechanical member can further include a dimple structure protruding out into the gap and aligned with the removed portion of the electrode layer. When in operation, the mechanical member can be capable of deflecting toward the electrode layer. The electrostatic actuator can be used in a fluid drop ejector for ink jet recording or printing devices. | 12-31-2009 |
20100002052 | INK JET PRINTHEAD CONFIGURED TO MINIMIZE INK-FLOW DEAD ZONES IN THE BUBBLE CHAMBER - An ink jet printhead for use in ink jet printing includes a substrate and a nozzle plate. The substrate has an oblong recessed region forming a ceiling and interior side walls of a bubble chamber. The oblong recessed region has a length dimension that is greater than its width dimension. The oblong recessed region has a first end spaced apart from a second end in the length dimension. The substrate has an ink inlet channel passing through the ceiling to form an ink inlet port near the first end of the oblong recessed region. The nozzle plate is attached to the substrate to form a floor of the bubble chamber. The nozzle plate has an ink jet nozzle passing through the nozzle plate. The ink jet nozzle is positioned in fluid communication with the bubble chamber at a location near the second end of the recessed region. | 01-07-2010 |
20100002053 | PRINTHEAD HAVING CONSTRAINED PRINTHEAD MODULE - A printhead is provided having a casing having a channel formed by a top wall and sidewalls of the casing, and a printhead module having at least two ejection nozzle integrated circuits supported by a support member which delivers printing fluid to the nozzle integrated circuits. The support member has a first tab which is received in a recess of the channel and a second tab clamped between the channel and a clamping arrangement so as to allow constrained movement of the printhead module relative to the channel. | 01-07-2010 |
20100002054 | EJECTION ARRANGEMENT FOR PRINTHEAD NOZZLE - An ejection arrangement is provided for a printhead nozzle. The arrangement has a chamber having an inlet defined by edge portions of a first side of the chamber and an ejection port defined in a second side of the chamber, and an ejection member located in the chamber between the edge portions. The ejection member is operable to cause ejection of fluid in the chamber through the ejection port and subsequent refill of fluid into the chamber through the inlet. The edge portions are configured to reduce fluid flow through a space between the edge portions and the ejection member during ejection. | 01-07-2010 |
20100002055 | Printhead Nozzle Arrangement With Radially Disposed Actuators - A nozzle arrangement for an inkjet printhead includes a substrate with a layer of drive circuitry, the substrate defining an ink chamber with an ink supply channel etched through the substrate; and a roof structure having a roof layer over the chamber. The roof structure comprises a nozzle rim positioned around an ejection port defined in the roof layer above the chamber; a plurality of actuators radially spaced about, and displaceable with respect to, the nozzle rim, each actuator having an internal copper core for receiving therethrough a current, each actuator configured to thermally expand into the chamber upon receiving the current; and a series of struts interspersed between the actuators to support the nozzle rim with respect to the roof layer. | 01-07-2010 |
20100007699 | LIQUID EJECTION HEAD UNIT, METHOD FOR MANUFACTURING LIQUID EJECTION HEAD UNIT, AND LIQUID EJECTION APPARATUS - There is provided with a liquid ejection head unit, a method for the liquid ejection head unit, and a liquid ejection apparatus in which liquid ejection heads can be positioned with high precision and the liquid ejection heads can easily be replaced. | 01-14-2010 |
20100013891 | NOZZLE PLATE, METHOD FOR MANUFACTURING NOZZLE PLATE, DROPLET DISCHARGE HEAD, METHOD FOR MANUFACTURING DROPLET DISCHARGE HEAD, AND DROPLET DISCHARGE DEVICE - A nozzle plate, comprising: a nozzle discharging a liquid as droplets; a liquid-repellent film preventing attachment of the liquid on one surface of the nozzle plate; and a first bonding film formed on the other surface of the nozzle plate and bonded with a substrate. In the nozzle plate, the liquid-repellant film and the first bonding film are plasma polymerized films having a Si skeleton, the Si skeleton including a siloxane (Si—O) bond and having a random atomic structure, and an alkyl group bonded with the Si skeleton. Further, the alkyl group existing around a surface of the first bonding film is eliminated from the Si skeleton by an application of energy, which is applied to a region of at least a part of the first bonding film, so as to develop adhesiveness with respect to the substrate in the region of the surface of the first bonding film. | 01-21-2010 |
20100020130 | LIQUID EJECTING HEAD, IMAGE FORMING APPARATUS, AND METHOD FOR MANUFACTURING LIQUID EJECTING HEAD - A liquid ejecting head includes multiple nozzles to eject liquid droplet, a vibration unit including a vibration plate, the vibration plate forming at least one wall face of multiple liquid paths that communicate with the respective nozzles, a driving member to move the vibration plate, and the vibration unit formed of laminated multi-layered member that includes a resin layer to form the vibration plate, a first metal layer located on one side of the resin layer, and a second metal layer located on the other side of the resin layer, and wherein the first and second metal layers are formed of different metals, that is, the first metal layer has an ionization tendency higher than that of hydrogen, the second metal layer has an ionization tendency lower than that of hydrogen. | 01-28-2010 |
20100026760 | NOZZLE PLATE, METHOD FOR MANUFACTURING NOZZLE PLATE, DROPLET DISCHARGE HEAD, AND DROPLET DISCHARGE DEVICE - A nozzle plate includes: a nozzle for discharging a liquid as droplets; a liquid-repellent film suppressing attachment of the droplets on one surface of the nozzle plate; and a first bonding film formed on the other surface of the nozzle plate and bonded with a substrate. In the nozzle plate, the liquid-repellent film includes a first plasma polymerized film having a Si skeleton, which includes a siloxane (Si—O) bond and has a random atomic structure, and an elimination group bonded with the Si skeleton. Further, the elimination group existing around a surface of the first plasma polymerized film is eliminated from the Si skeleton by applying energy to a region of at least a part of the first plasma polymerized film so as to generate reactivity, on the region of the first plasma polymerized film, with a coupling agent having liquid repellency with respect to the droplets, and the first plasma polymerized film is bonded with the coupling agent by the reactivity so as to form the liquid-repellent film. The first bonding film is a second plasma polymerized film having a Si skeleton, which includes a siloxane (Si—O) bond and has a random atomic structure, and an elimination group bonded with the Si skeleton. The elimination group existing around a surface of the second plasma polymerized film constituting the first bonding film is eliminated from the Si skeleton by applying energy to a region of at least a part of the second polymerized film, so as to develop in the region of the surface of the second polymerized film adhesiveness with respect to the substrate. | 02-04-2010 |
20100033536 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - An inkjet printhead and a method of manufacturing the inkjet printhead. In the inkjet printhead, an anti reflective layer is formed of a material absorbing light on a chamber layer, and a nozzle layer including a plurality of nozzles is formed on the anti reflective layer. | 02-11-2010 |
20100033537 | Liquid Discharge Head and Printer - A plurality of pressure chambers are arranged in two arrays in a direction intersecting an extending direction of a common liquid chamber. First pressure chambers of one array and second pressure chambers of the other array are disposed in a staggered arrangement. First and second connecting channels extend, in the intersection direction, from the first and second pressure chambers through areas located between the second and first pressure chambers up to areas outside the common liquid chamber to make communication with the common liquid chamber, respectively. The first and second connecting channels are arranged alternately in relation to the extending direction. Accordingly, both of the insurance of the length of the connecting channel and the small sizing of a head are satisfied. | 02-11-2010 |
20100033538 | Inkjet Nozzle Assembly Having Thermoelastic Actuator Beam Disposed On Nozzle Chamber Roof - An inkjet nozzle assembly comprises a nozzle chamber having a floor and a roof, the roof having a nozzle opening defined therein. A moving portion defines part of the roof so that the moving portion is moveable towards the floor. A thermal actuator defines part of the moving portion. The thermal actuator comprises a first active beam for connection to drive circuitry and a second passive beam mechanically cooperating with the first beam, such that when a current is passed through the first beam, the first beam expands relative to the second beam resulting in bending of the actuator. The first active beam is disposed on an upper surface of the passive beam relative to the floor. | 02-11-2010 |
20100053270 | PRINTHEAD HAVING CONVERGING DIVERGING NOZZLE SHAPE - A printhead includes a nozzle plate and a nozzle bore located in the nozzle plate. In one embodiment, the nozzle bore includes a first section, a second section, and a third section when viewed in a plane perpendicular to the nozzle plate. The first section and the second section are spaced apart from each other by the third section. The first section includes a converging area portion and the second section includes a diverging area portion. In another embodiment, the first section and the second section of the nozzle bore are adjacent to each other. The first section includes a converging area portion and the second section includes a diverging area portion. The diverging area portion and the converging area portion are asymmetrical relative to each other when viewed along the plane perpendicular to the nozzle plate. | 03-04-2010 |
20100053271 | ELECTROSTATIC ACTUATOR FOR INK JET HEADS - An electrostatic inkjet head providing high pressure to ink in order to enable high quality printing. The electrostatic actuator providing the pressure to the membrane ( | 03-04-2010 |
20100053272 | INK EJECTING DEVICE AND METHOD OF MANUFACTURING THE SAME - Disclosed are an ink ejecting device and a method of manufacturing the same. The disclosed ink ejecting device includes an inkjet head including a substrate, which includes an ink feed hole, a plurality of via holes, which are formed in the rear surface of the substrate, and which expose the ink feed holes therethtough, a chamber layer stacked on the substrate, and a nozzle layer stacked on the chamber layer, and includes a base header, which is attached to the inkjet head and includes a plurality of ink supply slots having a corresponding arrangement with respect to the via holes. | 03-04-2010 |
20100060695 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - An inkjet printhead includes: a substrate in which an ink feed hole is formed; a chamber layer which is formed on the substrate by performing a photolithography process and which includes a first photosensitive resin; and a nozzle layer which is formed on the chamber layer by performing a photolithography process and which includes a second photosensitive resin. The first photosensitive resin and the second photosensitive resin are materials which are developed by different developing solutions, respectively. Additional layers and components may be incorporated into the inkjet printhead and may be formed on an upper surface of the substrate. The additional layers and components may include an insulating layer, one or more heaters, one or more electrodes, a passivation layer, a glue layer, and an anti-cavitation layer. | 03-11-2010 |
20100060696 | Printhead Integrated Circuit Having Glass Nozzle Chambers - A printhead integrated circuit includes a silicon substrate; a CMOS layer having drive and control circuitry; a passivation layer covering the CMOS layer; and nozzle assemblies disposed on the passivation layer. Each nozzle assembly includes a nozzle chamber having a nozzle opening and a droplet ejection actuator associated with each of the chambers. The droplet ejection actuator is electrically connected to the drive circuitry and adapted to eject a droplet of the ejectable liquid from the nozzle opening. Each chamber comprises a roof and sidewalls extending from the passivation layer to the roof. The roof and sidewalls are both comprised of a glass material. | 03-11-2010 |
20100060697 | METHOD OF PRINTING DROPLET USING CAPILLARY ELECTRIC CHARGE CONCENTRATION - A method of printing droplets using capillary electric charge concentration includes: providing a capillary nozzle comprising a back-end part and a front-end part disposed substantially opposite the back-end part; spacing a target member apart from the front-end part of the capillary nozzle at a predetermined distance; immersing the back-end part in a solution; and supplying a voltage to the solution. The back-end part transmits the solution to the front-end part. | 03-11-2010 |
20100066787 | LIQUID EJECTION HEAD AND IMAGE FORMING APPARATUS - A liquid ejection head has: a nozzle plate having a nozzle surface in which at least one nozzle for ejecting droplets of a liquid are formed; an anti-drying liquid supply port which supplies an anti-drying liquid to the nozzle surface of the nozzle plate; a flow channel portion which is formed in the nozzle surface and through which the anti-drying liquid supplied to the nozzle surface from the anti-drying liquid supply port flows; and an anti-drying liquid discharge port which suctions and discharges the anti-drying liquid flowing through the flow channel portion on the nozzle surface, from the nozzle surface, wherein, while the anti-drying liquid flows through the flow channel portion, the anti-drying liquid evaporates to increase humidity. | 03-18-2010 |
20100079547 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - Provided are an inkjet printhead and a method of manufacturing the same. The inkjet printhead may include a substrate having an ink feed passage, a chamber layer formed on the substrate and a plurality of ink chambers fillable with ink supplied from the ink feed hole. The printhead may also include a nozzle layer formed on the chamber layer, which includes a plurality of nozzles through which the ink is ejected and a glue layer interposed between the substrate and the chamber layer. The glue layer may include a cross-linked photoresist composition including photoresist. | 04-01-2010 |
20100079548 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - An inkjet printhead to prevent clogging of nozzles and spreading of ink during ejection, and a method of manufacturing the inkjet printhead. The inkjet printhead includes a substrate, a substrate, a passage forming layer formed on the substrate, and a nozzle layer formed on the passage forming layer and including a material including an epoxy group or a hydroxyl group, wherein the epoxy group or the hydroxyl group is protected by an alcohol-protecting group. | 04-01-2010 |
20100097423 | NOZZLE PLATE FOR LIQUID EJECTOR HEAD, LIQUID EJECTOR HEAD, LIQUID EJECTOR, LIQUID EJECTION METHOD, INKJET RECORDING APPARATUS, AND INKJET RECORDING METHOD - The present invention provides a nozzle plate for liquid ejector head and a liquid ejector head. The nozzle plate for liquid ejector head includes at least a nozzle hole for ejecting droplets composed of an ejection liquid, wherein the surface energy of an inner wall of the nozzle hole at 25° C. is lower than the surface tension of the ejection liquid at 25° C. and is substantially same as the surface energy of the ejection side surface of the nozzle plate at 25° C. | 04-22-2010 |
20100097424 | INK-JET HEAD - An ink-jet head is disclosed. The ink-jet head in accordance with an embodiment of the present invention, including a reservoir, which stores ink, a chamber, which is supplied with the ink from the reservoir, a restrictor, which connects the reservoir with the chamber, a nozzle, which ejects the ink, and a damper, which is interposed between the chamber and the nozzle, can include: a body, in which the chamber, the reservoir, the restrictor and the damper are formed; and a nozzle plate, which is coupled to the body and in which the nozzle is formed on the nozzle plate, in which the nozzle plate is made of a transparent material, and an observation window is formed on the nozzle plate and apart from the nozzle for observation of a meniscus formed in the nozzle. | 04-22-2010 |
20100097425 | INKJET RECORDING HEAD AND INKJET RECORDING METHOD - An apparatus includes nozzles and an ink passage. Each nozzle includes a pressure chamber which houses an electrothermal transducer provided on a substrate to apply ejection energy to ink, an ink ejection orifice which faces the electrothermal transducer, and an ink passage along which the ink is supplied to the pressure chamber. The ink supply port is provided on the substrate and communicates with the ink passages. A distance between a center of gravity of the electrothermal transducer and the ink supply port differs between the nozzles which are next to each other. In at least one of the nozzles, a center of gravity of the ink ejection orifice is shifted from that of the electrothermal transducer in a direction toward the ink supply port by an amount which is increased as the distance increases. | 04-22-2010 |
20100103221 | LIQUID DROPLET DISCHARGING DEVICE AND IMAGE FORMING DEVICE - There is provided a liquid droplet discharging device including: a liquid passage member provided with a liquid passage into which a liquid is supplied; plural nozzles provided for the liquid passage member and each discharging the liquid contained in the liquid passage; a holding member that holds both end portions of the liquid passage member; and a drive unit that drives at least one of the holding members, and deforms the liquid passage member from a concave state to a convex state in the liquid droplet discharge direction, imparts inertial force to the liquid, and discharges liquid droplets from the nozzles. | 04-29-2010 |
20100103222 | INKJET HEAD - An inkjet head is disclosed. The inkjet head, which include a head body, having one side, in which a nozzle is formed to discharge ink; and a protrusion, formed in one side of the head body, spaced from the nozzle, can form a groove on the surface of a printing target in the printing and then discharge ink in the groove, thereby increasing the aspect ratio of a printed line. | 04-29-2010 |
20100110144 | Applying a Layer to a Nozzle Outlet - A nozzle layer is described that has a semiconductor body having a first surface, a second surface opposing the first surface, and a nozzle formed through the body connecting the first and second surfaces, wherein the nozzle being configured to eject fluid through a nozzle outlet on the second surface, and a metal layer around the outlet on the second surface and at least partially inside the nozzle, the metal layer inside the nozzle being completely exposed. | 05-06-2010 |
20100118088 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - Provided are an inkjet printhead and a method of manufacturing the same. The inkjet printhead includes a substrate which includes an ink feed passage, a chamber layer, which is disposed on the substrate and a plurality of ink chambers in which ink supplied from the ink feed passage is filled. It also includes a nozzle layer, which is disposed in the chamber layer and includes a plurality of nozzles through which the ink is ejected. The chamber layer and the nozzle layer are cured products of a first negative photoresist composition and a second negative photoresist composition. Each of the first negative photoresist composition and the second negative photoresist composition includes an epoxidized multifunctional bisphenol B novolak resin, a cationic optical initiator, and a solvent. | 05-13-2010 |
20100118089 | DROPLET DISCHARGING HEAD WITH A THROUGH HOLE HAVING A PROTRUSION ON A SURFACE, DROPLET DISCHARGING DEVICE AND A FUNCTIONAL-FILM FORMING DEVICE - A droplet discharging head includes a first through hole having an outlet for discharging of a liquid material and a second through hole having an inlet for injection of the liquid material, the second through hole having a protrusion on surface. | 05-13-2010 |
20100128087 | INKJET NOZZLE ASSEMBLY HAVING MOVING ROOF STRUCTURE AND SEALING BRIDGE - A nozzle assembly for an inkjet printhead. The nozzle assembly includes a nozzle chamber with a roof having a nozzle opening defined therein. The roof includes a moving portion moveable relative to a stationary portion, such that movement of the moving portion relative to the stationary portion causes ejection of ink through the nozzle opening. The nozzle assembly also includes an actuator for moving the moving portion and a seal member. The seal member is configured as a bridge spanning between the moving portion and the stationary portion. | 05-27-2010 |
20100128088 | Nozzle plate and method of manufacturing the same - Provided are a nozzle plate and a method of fabricating the nozzle plate. In accordance with an example embodiment of the present invention, a nozzle plate may include a body and at least one nozzle protruding from the body, wherein the at least one nozzle includes a wall having a thickness that increases the farther the wall gets away from an exit of the at least one nozzle. | 05-27-2010 |
20100128089 | DROPLET EJECTOR - The droplet ejector includes: a head unit set composed of four head units arranged in a staggered manner in the arrangement direction; a head supporting member which supports the head unit set; a liquid supplier which supplies liquid to the head unit set; and a conveyor mechanism which conveys an ejection target. Each head unit has a passage structure having a liquid passage. At one edge of the passage structure in the arrangement direction, a liquid supply opening which is connected to the liquid passage and the liquid supplier is provided. Two passage structures neighboring in the arrangement direction are disposed so that the respective edges where the liquid supply openings are provided oppose each other in the arrangement direction. | 05-27-2010 |
20100134560 | METHOD FOR MANUFACTURING NOZZLE PLATE FOR LIQUID EJECTION HEAD, NOZZLE PLATE FOR LIQUID EJECTION HEAD AND LIQUID EJECTION HEAD - Provided is a method for manufacturing a nozzle plate which has a through hole having an ejection port. In the method, the through hole, which has one opening as an ejection port for ejecting the liquid, is arranged on a Si substrate by an anisotropic etching method wherein etching and side wall protection film formation are alternately repeated to the Si substrate and the following steps are performed in the following order; forming a film to be an etching mask on a surface of the Si substrate whereupon the ejection port is to be formed, forming the etching mask pattern having an opening for forming the thorough hole by performing photolithography and etching to a film to be the etching mask, and performing the etching by the anisotropic etching method by satisfying the conditional expression. | 06-03-2010 |
20100134561 | DROPLET EJECTION DEVICE AND MANUFACTURING METHOD THEREOF - A droplet ejection device includes a first member and a second member. The first member includes a droplet ejection surface which has a plurality of nozzles opening thereon and a flat bonding surface which lies opposite to the droplet ejection surface. The droplet ejection surface is curved corresponding to a curved surface onto which the nozzles ejecting droplets. The second member is bonded to the bonding surface of the first member. | 06-03-2010 |
20100134562 | INKJET PRINTHEAD WITH FIRST AND SECOND NOZZLE PLATES - An inkjet printhead with first and second nozzle plates. The first nozzle plate is comprised of a first material spanning a plurality of nozzles. The first nozzle plate has a plurality of cavities filled with a filler such that an upper surface of the first nozzle plate and an upper surface of the filler together define a contiguous planar surface. The second nozzle plate is comprised of a second material disposed on the planar surface. | 06-03-2010 |
20100141708 | LIQUID PROJECTION APPARATUS - A device for projecting liquid as jets or droplets from multiple nozzles, the device comprising:
| 06-10-2010 |
20100141709 | Shaping a Nozzle Outlet - A nozzle layer is described that has a semiconductor body having a first surface, a second surface opposing the first surface, and a nozzle formed through the body connecting the first and second surfaces, wherein the nozzle is configured to eject fluid through a nozzle outlet on the second surface, and the outlet having straight sides connected by curved corners. | 06-10-2010 |
20100149264 | Liquid Ejecting Head, Liquid Ejecting Head Unit, and Liquid Ejecting Apparatus - A liquid ejecting head includes a nozzle plate that has a transparent property and includes a nozzle row in which a plurality of nozzle openings ejecting liquids are arranged in line, and a communicating path forming substrate that is bonded to the nozzle plate and has a communicating path communicating with the nozzle openings, wherein on a surface of one of the communicating path forming substrate and the nozzle plate bonded to a surface of the other thereof, a mark for identifying a nozzle opening as a reference for positioning is formed in the vicinity of the nozzle opening as a reference for positioning among the nozzle openings. | 06-17-2010 |
20100149265 | METHOD OF MANUFACTURING LIQUID DISCHARGE HEAD - A liquid discharge head includes a member which is provided with a discharge port for discharging a liquid and made of a resin. Here, the member contains a plurality of inorganic particles. In addition, in a surface of the member on which the discharge port is opened, a density of the particles in a circumference of the discharge port is higher than that of the particles in the vicinity thereof. | 06-17-2010 |
20100149266 | Mems Integrated Circuit With Polymerized Siloxane Layer - A MEMS integrated circuit comprises: a silicon substrate having a passivated CMOS layer, a MEMS layer disposed on the passivated CMOS layer, and a polymer layer disposed on the MEMS layer. The CMOS layer comprises drive circuitry for actuating actuator devices in the MEMS layer and the polymer layer comprises a polymerized siloxane. | 06-17-2010 |
20100149267 | NOZZLE ASSEMBLY WITH THERMAL BEND ACTUATOR FOR DISPLACING NOZZLE - A nozzle assembly for an inkjet printhead includes a substrate assembly defining an ink inlet; a nozzle defining an opening through which ink is ejected, the nozzle including a crown portion and a skirt portion depending from the crown portion; wall portion extending from the substrate towards the nozzle and bounding the ink inlet; thermal bend actuator assembly mounted to the substrate assembly; and a lever arm extending from the thermal bend actuator to the nozzle, the lever arm supporting the nozzle above the wall portion. The thermal bend actuator assembly is adapted to actuate the lever arm such that the crown portion of the nozzle is displaced with respect to the wall portion, whereby ink contained in the nozzle is ejected out through the opening. | 06-17-2010 |
20100149268 | Inkjet Printer With Low Drop Volume Printhead - An inkjet printer with a printhead and an ink supply. The printhead has inkjet nozzles assemblies, which eject ink droplets having a drop volume of about 1 picoliter. The ink supply, which supplies ink to the nozzle assemblies, contains ink having a viscosity in the range of 0.7 to 15 centipoise and a surface tension in the range of 25 to 65 mN/m at a temperature of 25° C. | 06-17-2010 |
20100156991 | PRINTHEAD HAVING LAYERED HEATER ELEMENTS AND ELECTRODES - A printhead is provided having nozzles and heaters having heater elements and electrodes connecting current from a power source to the heater elements to heat, and form gas bubbles in, liquid within the nozzles which causes ejection of the liquid from the nozzles. The heaters are formed of layers of a single material. A first layer of the single material has portions of different thickness respectively defining the heater elements and electrodes. A second layer of the single material overlaying and spaced from the first layer has a single thickness defining the electrodes. | 06-24-2010 |
20100165048 | FORMING NOZZLES - Fluid ejection nozzles having a tapered section leading to a straight walled bore are described. Both the tapered section of the nozzle and the straight walled bore are formed from a single side of semiconductor layer so that the tapered section and the bore are aligned with one another, even when an array of nozzles are formed across a die and multiple dies are formed on a semiconductor substrate. | 07-01-2010 |
20100165049 | LIQUID EJECTION HEAD - In order to provide a liquid ejection head which enables ejection of a droplet at a higher frequency, according to the invention, a piezoelectric vibrator has a multilayer structure. In the multilayer structure, an upper piezoelectric layer and a lower piezoelectric layer are laminated one on another. A drive electrode is formed at a boundary between the upper piezoelectric layer and the lower piezoelectric layer and is electrically connected to a source for supplying a drive signal. An upper common electrode is formed on the surface of the upper piezoelectric layer. A lower common electrode is formed on the surface of the lower piezoelectric layer. An inertance of a nozzle orifice and an inertance of an ink supply port are set so as to become greater than an inertance of a pressure generating portion. | 07-01-2010 |
20100171793 | INK FEEDHOLE OF INKJET PRINTHEAD AND METHOD OF FORMING THE SAME - An ink feedhole of an inkjet printhead and a method of forming the same includes an ink feedhole that penetrates a substrate and has a width that narrows in an upper direction of the substrate, wherein at least one internal wall of the ink feedhole has a plurality of steps and inclines with respect to a surface of the substrate. | 07-08-2010 |
20100177145 | PRINTHEAD HAVING NOZZLE PLATE FORMED ON FLUID DISTRIBUTORS - A printhead is provided having a nozzle plate having a plurality of nozzles defined therethrough and a plurality of adjacently arranged structures on which the nozzle plate is formed. The structures have a plurality of passages for distributing fluid to the nozzles and each structure has elongate apertures to the passages. The long dimension of the elongate apertures in the abutting sides of adjacent structures are angled relative to each other. | 07-15-2010 |
20100182375 | INK JET PRINTING HEAD - The present invention relates to an ink-jet print head comprising a substrate, a structural or barrier layer defining ink passage ways, and, optionally, a nozzle plate, wherein a layer of polymeric material comprising carbon, hydrogen, and nitrogen atoms improves the adhesion of the layer defining ink passage ways with the substrate and/or the nozzle plate. The present invention also relates to a process of manufacturing an ink-jet print head including the step of forming the layer of polymeric material comprising carbon, hydrogen, and nitrogen atoms with a plasma treatment. | 07-22-2010 |
20100182376 | INK-JET HEAD - An ink-jet head is disclosed. The ink-jet head can include a chamber for holding ink, an actuator that can provide pressure to the chamber, and a nozzle that includes a multiple number of channels for ejecting the ink. Certain embodiments of the invention can reduce the surface tension of the ink droplets and thereby reduce the capacity requirement of the actuators. | 07-22-2010 |
20100182377 | LIQUID EJECTING HEAD, LIQUID EJECTING HEAD UNIT, METHOD FOR FABRICATING THE SAME, AND LIQUID EJECTING APPARATUS - A method for fabricating a liquid ejecting head unit including a liquid ejecting head having a nozzle line with a plurality of nozzle openings which are arranged in parallel, and a base plate on which the liquid ejecting head is mounted, the method includes: forming a second reference which is positioned to a first reference installed on the base plate, and a positioning adjusting hole on a positioning plate by a photolithographic method; attaching the positioning plate to the liquid ejecting head in such a way that the positioning adjusting hole and the nozzle openings have a predetermined arrangement; and fixing the liquid ejecting head to the base plate in a state in which the first reference and the second reference are positioned. | 07-22-2010 |
20100188462 | METHOD OF CONTINUOUS INKJET PRINTING - A liquid jet is ejected out of a nozzle, the liquid comprising one or more components, the flow of one or more of said components, the active components, being separated such that the liquid that flows within a boundary layer thickness δ, of the nozzle wall is substantially comprised of a liquid without the active components, the continuous phase, and the said active components flow substantially outside said boundary layer where δ is defined by formula (I): where μ is the continuous phase viscosity in Pa·s, U is the jet velocity in m/s ρ is the continuous phase density in kg/m3 and x is the length of the nozzle in m in the direction of flow. | 07-29-2010 |
20100201747 | LIQUID EJECTING APPARATUS, RECORDING APPARATUS AND FIELD GENERATING UNIT - There is provided a liquid ejecting apparatus including a liquid ejecting head that ejects liquid from an aperture of a nozzle plate toward a recording material while reciprocating over the recording material and a platen that supports the recording material from a rear face thereof to position the recording material at a position facing the nozzle plate in a direction in which the liquid is ejected. The liquid ejecting apparatus further includes: a first electrode being provided on the platen side between the liquid ejecting head and the platen; a second electrode being provided on the liquid ejecting head side between the liquid ejecting head and the platen; and a potential difference generating section of which one end is connected to the first electrode and the other end is connected to the second electrode and that generates a potential difference between the second electrode and the first electrode. | 08-12-2010 |
20100207996 | LIQUID EJECTING APPARATUS, RECORDING APPARATUS, AND FIELD GENERATING UNIT - There is provided a liquid ejecting apparatus including a liquid ejecting head that ejects liquid from an aperture of a nozzle plate toward a recording material while reciprocating over the recording material and a platen that supports the recording material from a rear face thereof to position the recording material at a position facing the nozzle plate in a direction in which the liquid is ejected. The liquid ejecting apparatus further includes: a first electrode being provided on the platen side between the liquid ejecting head and the platen; a second electrode being provided on the liquid ejecting head side between the liquid ejecting head and the platen; and a potential difference generating section of which one end is connected to the first electrode and the other end is connected to the second electrode and that generates a potential difference between the second electrode and the first electrode. | 08-19-2010 |
20100207997 | PRINTHEAD NOZZLE ARRANGEMENT HAVING INTERLEAVED HEATER ELEMENTS - A printhead nozzle arrangement is provided having a wafer defining a chamber for holding ejection fluid, an ejection port supported by a plurality of bridge members which extend from the ejection port to sides of the chamber, and a plurality of heater elements interleaved between the bridge members for causing ejection of fluid held in the chamber through the ejection port. | 08-19-2010 |
20100214361 | CAST-IN PLACE INK FEED STRUCTURE USING ENCAPSULANT - A method of forming an enclosed fluid path in a print head includes providing a die member and a truncated nozzle plate spaced from the upper surface of the die member. The die and nozzle plate are formed on a print head substrate having an aperture formed therein. A sacrificial material is seated over the aperture of the print head substrate and joins a terminal end of the truncated nozzle plate. The sacrificial material is encapsulated from the terminal end of the nozzle plate to a surface of the print head substrate. Removal of the sacrificial material defines the fluid path from the aperture of the print head substrate to the nozzle plate. | 08-26-2010 |
20100214362 | INKJET PRINTHEAD WITH ACTUATORS SHARING A CURRENT PATH - A printhead for an inkjet printer is disclosed. The printhead has an elongate wafer substrate and an array of nozzles fabricated on the elongate wafer substrate. The array of nozzles is arranged in a first row and a second row extending parallel to each other and the longitudinal extent of the wafer substrate. Each nozzle has an ejection aperture and an actuator for ejecting printing fluid through the ejection aperture. Each of the actuators has a pair of electrodes spaced apart from each other in a direction transverse to a long edge of the wafer substrate such that one of electrode of each of the electrode pairs is proximate the long edge of the wafer substrate and the other electrode of each of the electrode pairs is remote from the long edge. The printhead also has drive circuitry formed on one surface of the wafer substrate for supplying current to the electrodes of the actuators. The drive circuitry is supplied with power and data along the long edge of the wafer substrate. At least one of the electrodes remote from the long edge of the first row share a current path which conducts current from the drive circuitry to the electrodes with at least one of the electrodes proximate the long edge of the second row, the first row being nearer to the long edge than the second row. | 08-26-2010 |
20100220148 | Nozzle Shape For Fluid Droplet Ejection - A fluid ejection apparatus includes a substrate having a nozzle surface and a passage through the substrate for fluid flow, the passage having a nozzle that includes an opening in the nozzle surface of the substrate, and an actuator to cause fluid in the passage to be ejected from the nozzle. The nozzle includes side walls extending away from the opening, the side walls sloping outwardly as the side walls extend away. An aspect ratio of a length of the opening to a width of the opening is at least 2:1. | 09-02-2010 |
20100231648 | PRINTING SYSTEM HAVING FUNNELLED FLUID DISTRIBUTION - A printing system is provided having a fluid delivery member, a fluid ejection nozzle integrated circuit, and a fluid distribution member incorporating a laminated stack of layers for distributing fluid from the delivery member to the nozzles of the integrated circuit via distribution apertures. The distribution apertures of each successive layer of the stack from the delivery member to the nozzles having a successively smaller diameter. | 09-16-2010 |
20100231649 | INKJET PRINTER UTILIZING LOW ENERGY TITANIUM NITRIDE HEATER ELEMENTS - An inkjet printer includes an array of nozzles extending substantially a width of a print media fed through the inkjet printer; and a plurality of heater elements each corresponding to a nozzle, each heater element being formed substantially of titanium nitride and suspended in direct contact with a bubble forming liquid with the bubble forming liquid surrounding the heater element. Each heater element has a mass of less than 10 nanograms, and sized to heat the bubble forming liquid above a boiling point thereof upon application of 200 nJ or less of energy to each heater element. | 09-16-2010 |
20100245477 | Head module, droplet ejection unit, Image forming apparatus, droplet ejection head positioning jig, and method for manufacturing head module - A head module includes: a droplet ejection head that has a nozzle surface formed by a plurality of nozzles and ejects droplets through the plurality of nozzles; a support plate to which the droplet ejection head is fixed; and a sub-plate to which the support plates are fixed. When a plurality of the support plates are fixed to the sub-plate, the plurality of the support plates are fixed thereto with the nozzle surfaces of the plurality of droplet ejection heads being disposed on the same plane. Consequently, tilts of the nozzle surfaces of the droplet ejection heads can be prevented. | 09-30-2010 |
20100245478 | NOZZLE PLATE MANUFACTURING METHOD AND NOZZLE PLATE - A projecting portion is formed on a surface of a liquid droplet discharge side of a substrate in which a plurality of nozzle holes for discharging a liquid droplet will be processed. A liquid droplet formed of a polyimide resin is attached to the vicinity of a portion which will become an opening on the surface of the liquid droplet discharge side of the substrate. Then, the liquid droplet is hardened to form the projecting portion in the vicinity of the portion which will become the opening, and a liquid repellent film is formed on the surface of the liquid droplet discharge side. Thereafter, the nozzle holes are formed on the surface of the liquid droplet discharge side to make up a nozzle surface. | 09-30-2010 |
20100245479 | COMPACT ORGANIC VAPOR JET PRINTING PRINT HEAD - A first device is provided. The first device includes a print head, and a first gas source hermetically sealed to the print head. The print head further includes a first layer further comprising a plurality of apertures, each aperture having a smallest dimension of 0.5 to 500 microns. A second layer is bonded to the first layer. The second layer includes a first via in fluid communication with the first gas source and at least one of the apertures. The second layer is made of an insulating material. | 09-30-2010 |
20100253743 | NOZZLE PLATE MANUFACTURING METHOD, NOZZLE PLATE, DROPLET DISCHARGE HEAD MANUFACTURING METHOD, DROPLET DISCHARGE HEAD, AND PRINTER - A method for manufacturing a nozzle plate includes: forming on a first surface of a silicon substrate a film to be a dry etching mask used to form a depression that becomes a first nozzle portion on a droplet discharge side of the silicon substrate, and dry etching the silicon substrate using the film to form the depression to be the first nozzle portion; sequentially forming a first liquid-resistant protective film having liquid resistance and etching resistance and a liquid repellent layer having liquid repellency over the whole of the first surface of the silicon substrate after removing the film used as the dry etching mask, the whole of the first surface including an inner wall of the depression; bonding a support substrate to the first surface of the silicon substrate, and reducing the silicon substrate to a desired thickness from a second surface side opposite from the support substrate; dry etching the silicon substrate from the second surface side until a bottom of the depression to be the first nozzle portion appears, so as to form a second nozzle portion disposed on a droplet supply side and in communication with the first nozzle portion, and to thereby form a nozzle hole from the first nozzle portion and the second nozzle portion; removing the first liquid-resistant protective film and the liquid repellent layer remaining at the bottom of the depression to be the first nozzle portion, and the liquid repellent layer remaining on an inner wall of the first nozzle portion; forming a second liquid-resistant protective film having liquid resistance over the whole of the second surface of the silicon substrate, the whole of the second surface including an inner wall of the nozzle hole; and detaching the support substrate from the silicon substrate. | 10-07-2010 |
20100259582 | INKJET HEAD AND ELECTROSTATIC ATTRACTION TYPE INKJET HEAD - The inkjet head has a first silicon substrate | 10-14-2010 |
20100259583 | METHOD FOR FORMING A FLUID EJECTION DEVICE - A method of forming a fluid ejection device includes forming a pair of first glass layers and forming a second glass layer. Each first glass layer includes a first side and a second side with the second side defining a first fluid flow structure. The second glass layer includes a first side and a second side opposite the first side, with each respective first side and second side defining a second fluid flow structure. The second glass layer is bonded in a sandwiched position between the respective first glass layers with each respective second fluid flow structure of the second glass layer in fluid communication with the respective first fluid flow structure of the respective first glass layers to define a fluid flow pathway for ejecting a fluid. | 10-14-2010 |
20100265296 | INDEPENDENT ADJUSTMENT OF DROP MASS AND DROP SPEED USING NOZZLE DIAMETER AND TAPER ANGLE - Methods and systems of ejecting ink drops from an inkjet printer are disclosed. The methods and systems can include a printhead with one or more tapered nozzles each with an associated taper angle and exit diameter. Ink can be received into the printhead and formed into ink drops in the tapered nozzles. The ink drops can each have an associated drop mass and drop speed. The tapered nozzles can be provided such that the exit diameter can independently dictate the drop mass and the taper angle can independently dictate the drop speed. As such, the complexity of jet design optimization is reduced. | 10-21-2010 |
20100265297 | Inkjet head - An inkjet head is disclosed. In accordance with an embodiment of the present invention, the ink-jet head that prevents a nozzle from being blocked by a residual ink droplet formed on the nozzle can include a head body having the nozzle formed on one surface thereof and an actuator, which provides pressure to the inside of the head body. Here, a transfer groove is formed on one surface of the head body, in which the transfer groove is separated from the nozzle to provide a path through which the residual ink droplet moves. Thus, the inkjet head can prevent the nozzle from being blocked by a residual ink droplet formed on the nozzle by use of the transfer groove, which provides a path for a residual ink droplet formed on the nozzle to escape. | 10-21-2010 |
20100265298 | INKJET PRINTHEAD WITH INTERLEAVED DRIVE TRANSISTORS - An inkjet printhead includes a plurality of inkjet nozzles arranged in nozzle rows. Each nozzle row has a respective row of drive transistors. Drive transistors corresponding to one nozzle row are interleaved with drive transistors corresponding to an adjacent nozzle row. | 10-21-2010 |
20100271428 | POLYFUNCTIONAL EPOXY COMPOUND, EPOXY RESIN, CATIONIC PHOTOPOLYMERIZABLE EPOXY RESIN COMPOSITION, MICRO STRUCTURED MEMBER, PRODUCING METHOD THEREFOR AND LIQUID DISCHARGE HEAD - A polyfunctional epoxy compound, represented by a formula (I), comprising a nucleophilic organic group A having a nucleophilic group other than an epoxy group, and an epoxy-containing group B having an epoxy group: | 10-28-2010 |
20100271429 | INK EJECTION NOZZLE WITH OSCILLATOR AND SHUTTER ARRANGEMENT - An ink ejection nozzle includes an ink reservoir with an oscillator configured to oscillate ink pressure in the reservoir; a wafer assembly defining an ink supply channel in fluid communication with the ink reservoir; a nozzle chamber structure on the wafer assembly and defining a nozzle chamber in fluid communication with the ink supply channel, and an ink ejection port in fluid communication with the nozzle chamber; and a shutter positioned in the nozzle chamber and configured to shut the ink ejection port to the ejection of ink from the nozzle chamber. The shutter is moved by a thermoelastic actuator having a coiled serpentine heater. | 10-28-2010 |
20100271430 | PRINTHEAD PROVIDED WITH INDIVIDUAL NOZZLE ENCLOSURES - A unit cell, a plurality of which make up a printhead, includes a substrate including an ink inlet passage; a chamber defined by chamber sidewalls and a nozzle plate defining an aperture for ejection of ink from the chamber, the chamber being in fluid communication with the inlet passage; and a nozzle enclosure comprising enclosure sidewalls and a roof defining an opening for ejection of ink, the nozzle enclosure surrounding the aperture such that ink ejected from the aperture is directed to the opening of the nozzle enclosure, thereby isolating the aperture from an adjacent aperture of an adjacent unit cell. The opening has a greater diameter than the aperture. | 10-28-2010 |
20100295900 | MINI-EXTRUSION MULTILAYERING TECHNIQUE FOR THE FABRICATION OF CERAMIC/PLASTIC CAPACITORS WITH COMPOSITION-MODIFIED BARIUM TITANATE POWDERS - A printer includes a work surface and a print head disposed over the work surface. The print head and the work surface are relatively movable in associated planes. The print head includes a first nozzle to deposit a polymeric ink, a second nozzle to deposit a conductive ink, and a third nozzle to deposit a dielectric ink. | 11-25-2010 |
20100302313 | FLUID DISPENSING DEVICE - A fluid dispensing device and method to wick fluid, to be ejected or expelled by a fluid ejecting device, along a capillary slot. | 12-02-2010 |
20100302314 | INKJET NOZZLE ASSEMBLY HAVING SUSPENDED BEAM HEATER ELEMENT OFFSET FROM NOZZLE APERTURE - An inkjet nozzle assembly includes a nozzle chamber having a planar roof spaced apart from a floor. A heater element is suspended in the nozzle chamber and is configured as a planar beam extending longitudinally and parallel with a plane of the roof. A nozzle aperture defined in the roof has a centroid offset from a longitudinal centroid of the planar beam. | 12-02-2010 |
20100315468 | INKJET NOZZLE ASSEMBLY WITH THERMAL BEND ACTUATOR DEFINING MOVING PORTION OF NOZZLE CHAMBER ROOF - An inkjet nozzle assembly includes a nozzle chamber comprising a floor and a roof. The roof has a nozzle opening defined therein, and a moving portion moveable towards the floor. The assembly further comprises a thermal bend actuator, defining at least part of the moving portion of the roof, for ejecting ink through the nozzle opening. The thermal bend actuator comprises an upper first beam for connection to drive circuitry and a lower second beam mechanically cooperating with the first beam, such that when a current is passed through the first beam, the first beam expands relative to the second beam resulting in bending of the moving portion towards the floor of the nozzle chamber. | 12-16-2010 |
20100321442 | INKJET HEAD - An inkjet head is disclosed. In an embodiment of the present invention, the ink-jet head includes a chamber, which houses ink, and a nozzle, which ejects the ink housed in the chamber. Here, the nozzle is elliptical. The inkjet head can print a minute pattern and reduce its driving energy because the inkjet head can eject a smaller droplet of ink with less energy compared to the energy being applied for a conventional inkjet head. | 12-23-2010 |
20110012961 | THREE-DIMENSIONAL PRINTER - A three-dimensional printer includes an inkjet head and a nozzle plate. The inkjet head includes a top wall and two sidewalls connecting with the top wall. The top wall of the inkjet head includes a top nozzle. Each sidewall includes a side nozzle. The nozzle plate is positioned on an inner surface of the inkjet head. The nozzle plate includes a top area and two opposite side areas connecting with the top area. The top area of the nozzle plate includes a plurality of holes corresponding to the top nozzle of the inkjet head. Each side area of the nozzle plate includes a plurality of holes corresponding to the side nozzle of the inkjet head. | 01-20-2011 |
20110025779 | PRINTHEAD INCLUDING DUAL NOZZLE STRUCTURE - A printhead includes a first nozzle bore, a liquid chamber, and a second nozzle bore. The liquid chamber is positioned between the first nozzle bore and the second nozzle bore and extends beyond the opening of the first nozzle bore. The first nozzle bore is in liquid communication with the second nozzle bore through the liquid chamber. | 02-03-2011 |
20110025780 | PRINTHEAD HAVING REINFORCED NOZZLE MEMBRANE STRUCTURE - A printhead includes a nozzle membrane, a substrate, and a support structure. The nozzle membrane includes an external surface, a length, and a plurality of nozzles located along the length of the nozzle membrane. The nozzle membrane is affixed to the substrate. The substrate includes a liquid feed channel that provides liquid to the plurality of nozzles of the nozzle membrane. The liquid feed channel extends along the length of the nozzle membrane such that the liquid feed channel is common to each nozzle of the plurality of nozzles of the nozzle membrane. The support structure is affixed to the external surface of the nozzle membrane to provide structural support to the nozzle membrane. | 02-03-2011 |
20110032307 | INKJET PRINTHEAD HAVING NOZZLE CHAMBERS WITH REDUNDANT INK INLETS - An inkjet printhead includes: a substrate; a row of nozzle chambers disposed on the substrate; an ink conduit extending longitudinally adjacent the row of nozzle chambers; and a nozzle plate spanning over the ink conduit and the row of nozzle chambers. Each nozzle chamber has a respective ink ejection opening defined in the nozzle plate; a first ink inlet defined in a sidewall of the nozzle chamber for receiving ink from the ink conduit; and a second ink inlet defined in a floor of the nozzle chamber. Each of the first and second ink inlets is in fluid communication with a common ink reservoir. | 02-10-2011 |
20110032308 | NOZZLE SHEET AND METHOD FOR MANUFACTURING THE SAME - Provided is a nozzle sheet manufacturing method by which highly fine manufacture and low cost are achieved. The method for manufacturing a nozzle sheet to be used for an inkjet head for an inkjet printer is provided with a step of forming a first resin sheet on a patterned liquid repellent film on a first dummy substrate, a step of forming a first nozzle which penetrates the first resin sheet, and a step of peeling the first dummy substrate. | 02-10-2011 |
20110050804 | LIQUID EJECTING HEAD AND METHOD OF MANUFACTURING THE SAME - A liquid ejecting head has a nozzle substrate made of crystalline material, in which a nozzle through which liquid is ejected is provided by an etching process. The nozzle includes a plurality of continuous nozzle sections having different diameters arranged coaxially in the direction of the thickness of the crystalline material. The nozzle sections include a first nozzle section that is located at the ejection-side end and that has a first diameter, and a second nozzle section that is continuous with the first nozzle section and that has a second diameter larger than the first diameter. The difference between the first diameter and the second diameter is not less than 0.1 and not greater than 0.4 relative to the first diameter. | 03-03-2011 |
20110050805 | Liquid Ejecting Apparatus - A liquid ejecting apparatus includes: a plurality of flow channel units, each of which includes a pressure generating chamber operable to generate pressure therein and a nozzle plate formed with a nozzle from which liquid is ejected by the pressure; a plurality of drive units, each of which includes a piezoelectric vibrator operable to apply a pressure vibration to the pressure generating chamber, and which correspond to the plurality of the flow channel units, respectively; and a head casing, in which the plurality of the drive units are stored, and to which the plurality of the flow channel units are fixed. | 03-03-2011 |
20110069121 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - The present disclosure provides an inkjet printhead and a method of manufacturing the inkjet printhead. The inkjet printhead includes: a substrate having an ink feed hole; a chamber layer disposed on the substrate, the chamber layer including a plurality of ink chambers that may be filled with ink supplied through the ink feed hole; a nozzle layer disposed on the chamber layer, the nozzle layer including a plurality of nozzles through which ink is ejected; and a glue layer disposed between the substrate and the chamber layer. The glue layer includes a cured product of an oxetane resin composition. | 03-24-2011 |
20110074883 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes nozzles that eject liquid, pressurizing chambers communicating with respective nozzles, and liquid supply channels that supply the liquid to the pressurizing chambers. The liquid ejecting head ejects the liquid when a pressure generating unit changes the pressure within the pressurizing chambers. A cylindrical nozzle straight portion, in which the opening cross-sectional area is narrower than at other areas of the nozzle, is formed toward the pressurizing chamber from the nozzle opening in each nozzle. The opening cross-sectional area of the nozzle straight portion is Sn; the length thereof is Ln; the channel cross-sectional area of the liquid supply channel is Ss; the length from a common liquid chamber-side connection opening in the liquid supply channel to a pressurizing chamber-side connection opening is Ls. The ratio (Ln/Sn) is less than or equal to ½ of the ratio (Ls/Ss). | 03-31-2011 |
20110074884 | INKJET HEAD - To provide an inkjet head which includes high-density nozzle rows and which does not easily cause an ejection failure due to adhesion of ink mist around ejection orifices when a high-density image of a secondary color is printed with a small number of paths. An inkjet head includes at least two or more types of nozzle rows that eject different amounts of ink. When A is the cross section, with respect to an ink supplying direction, of an ink supply path from each ejection orifice to a supply port and L is the length of the ink supply path, the value of A/L differs between the two or more types of nozzle rows. The nozzle row of which the value of A/L is small is disposed outside an area between the nozzle rows that eject a largest amount of ink and that are arranged next to each other. | 03-31-2011 |
20110080450 | FLUID EJECTION ASSEMBLY HAVING A MOUNTING SUBSTRATE - The present invention relates to a fluid ejection assembly that includes an injection-molded mounting substrate that is formed by a two-shot injection molding process, wherein a housing portion of the mounting substrate is formed by a first shot molding, and a die-attach portion of the mounting substrate is formed within the housing portion by a second shot molding. The die-attach portion is made of a material having a low coefficient of thermal expansion along a direction that is parallel to a fluid passageway in the die attach portion. | 04-07-2011 |
20110090286 | PRINTHEAD INTEGRATED CIRCUIT HAVING EXPOSED ACTIVE BEAM COATED WITH POLYMER LAYER - A printhead integrated circuit includes: a substrate comprising drive circuitry; a ceramic nozzle plate spaced apart from the substrate, the nozzle plate having a plurality of nozzle openings and a plurality of moveable portions defined therein; an active beam disposed on each moveable portion of the nozzle plate, such that each moveable portion is moveable towards the substrate when a current from the drive circuitry is passed through a respective active beam; and a polymer layer coating the nozzle plate and the active beams, wherein the polymer layer is comprised of a polymerized siloxane. | 04-21-2011 |
20110090287 | PRINTHEAD HAVING EJECTION NOZZLES WITH DISPLACEABLE FLUID CHAMBERS - A printhead is provided having a plurality of ejection nozzles defined in an array along a substrate. Each nozzle has a wall portion bounding a respective fluid inlet defined in the substrate, a crown portion defining an ejection port, a skirt portion depending from the crown portion to form part of a peripheral wall of the nozzle, and an actuator. The crown and skirt portions are displaceable with respect to the wall portion to alter a volume of a fluid chamber defined by the wall, crown and skirt portions such that when the volume is altered, fluid is ejected from the ejection port. The crown portion defines a rim surrounding the ejection port so as to facilitate formation of a meniscus of the fluid. The actuator causes the displacement of the crown and skirt portions. | 04-21-2011 |
20110102509 | Fluid-ejection assembly substrate having rounded ribs - A fluid-ejection assembly includes a die, a substrate, ribs, and adhesive. The die has nozzles through which fluid is ejected. The substrate provides the fluid to the die. The ribs are within the substrate, and have rounded corners. The rounded corners are adapted to provide a predetermined characteristic. The adhesive affixes the die to the substrate. | 05-05-2011 |
20110115851 | WIPER BUMPER FOR A FLUID DISPENSING COMPONENT - In one embodiment, a component for dispensing a fluid includes: a plurality of fluid ejection orifices arrayed in a plane; and an elongated bumper extending along one side of the array generally in a plane intersecting the plane of the array and the bumper having a protruding exterior surface that includes a first part inclining away from the array and a contiguous second part inclining back toward the array. | 05-19-2011 |
20110122196 | Manifold and Nozzle Closure/Seal System - A combination manifold and nozzle closure system is disclosed. The closure system limits exposure of the nozzle outlets to air between dispenses or between uses. Manifold accommodates a plurality of nozzles. Each nozzle includes a nozzle outlet extending beyond an end of the manifold. An actuator shaft passes through the manifold and is connected to a plate at its distal end with a film disposed between the plate and the nozzle outlets. An actuator moves the actuator shaft from a closed position where the film engages the nozzle outlets and the plate is disposed just below the nozzles to an open position where the film and plate have been pulled upward beyond the nozzle outlets. The plate includes a plurality of openings and the film includes a plurality of valves each opening in the plate is in alignment with a valve and each valve is in alignment with one of the nozzle outlets. By moving the plate and film upward past the nozzle outlets, the valves and the film open and the nozzle outlets extend through the openings in the plate and are therefore free to dispense. To close the system, the actuator moves the shaft, plate and film downward where the valves and the film close and engage the nozzle outlets to keep the nozzle outlets relatively isolated from air between dispenses. | 05-26-2011 |
20110122197 | INKJET HEAD AND INKJET PRINTER HAVING THE SAME - An inkjet head and an inkjet printer having the inkjet head are disclosed. In accordance with an embodiment of the present invention, the inkjet head includes a chamber housing ink and a nozzle, which discharges the ink housed in the chamber. Here, a plurality of inner wall grooves are formed on an inner wall of the nozzle, in which the plurality of inner wall grooves extends in a lengthwise direction of the nozzle. Thus, the inkjet head can discharge big ink droplets at a high frequency by quickly filling the ink in the nozzle after relatively big ink is discharged. | 05-26-2011 |
20110122198 | INK JET RECORDING HEAD, PRODUCING METHOD THEREFOR AND COMPOSITION FOR INK JET RECORDING HEAD - The invention provides a method for producing an ink jet recording head having a high durability and a high ink resistance and enabling a high-quality image recording by employing a material capable of reducing the internal stress and having satisfactory patterning characteristics. It also provides a method of producing such ink jet recording head with a high precision. A cationically photopolymerizable resin composition containing a condensate of a hydrolysable organosilane compound, employed as a material for forming a flow path forming member, enables a reduction of internal stress and a highly precise pattern in the flow path forming member thereby providing an ink jet recording head having a high durability and a high ink resistance and capable of high-quality printing over a prolonged time, and a producing method therefor. | 05-26-2011 |
20110141195 | Nozzle plate and method of manufacturing the same - Provided is a nozzle plate and methods of manufacturing the nozzle plate. The nozzle plate may include a substrate having a nozzle. The nozzle plate may also include a permittivity reducing area in an upper portion of the substrate around the nozzle, wherein the permittivity reducing area includes a plurality of porosities and a plurality of walls between the plurality of porosities. Additionally, the nozzle plate may include a protection layer on the substrate, wherein the protection layer covers the plurality of porosities and the plurality of walls. | 06-16-2011 |
20110157279 | Multiple drop weight printhead and methods of fabrication and use - A printhead includes a chamber layer and at least two orifice layers. A first orifice layer is disposed on the chamber layer, and a second orifice layer is disposed on the first orifice layer. The second orifice layer has at least one counterbore formed therein. A first nozzle is formed through both orifice layers and produces droplets of a first drop weight. A second nozzle is formed through the first orifice layer, coincident with the counterbore, and produces droplets of a second drop weight that is different than the first drop weight. In one embodiment, the printhead is used in a stand-alone fluid-dispensing device. | 06-30-2011 |
20110169892 | INKJET NOZZLE INCORPORATING ACTUATOR WITH MAGNETIC POLES - A nozzle for an inkjet printer includes a roof layer defining a nozzle port; a substrate layer defining a nozzle chamber wall supporting the roof layer; an actuator assembly attached to the substrate, the actuator assembly including a support and a lever arm cantilevered from the support to terminate in a piston within the nozzle chamber wall; and a solenoid provided at an end of the lever arm opposite to that of the piston, the solenoid including a movable magnetic pole and a fixed magnetic pole spaced apart from the movable magnetic pole. | 07-14-2011 |
20110181664 | Forming Self-Aligned Nozzles - A method of forming a nozzle plate of a fluid ejection device includes performing a first etch from a first side of a wafer to form a tapered region, forming an oxide layer in the tapered region such that a depth of the oxide layer on the tapered walls is greater than a depth of the oxide layer on the floor, performing a second etch from the first side to remove the oxide layer from the floor and a portion of the oxide layer from the tapered wall, and performing a third etch from the first side to form an outlet passage having a straight wall. | 07-28-2011 |
20110199433 | DISCHARGING NOZZLE AND ELECTROSTATIC FIELD INDUCTION INK-JET NOZZLE - A nozzle and an electrostatic field induction ink-jet nozzle are disclosed. In accordance with an embodiment of the present invention, the nozzle includes a concave part, which is formed along an outer circumference of the nozzle and in which the outer circumference is adjacent to a liquid discharging surface. The discharging nozzle can minimize the overflow and damping by a liquid during a process of discharging the liquid and thus maintain the discharging performance constant despite an extended operation of the nozzle. | 08-18-2011 |
20110228005 | INK JET PRINT HEAD PLATE - A nozzle plate for an inkjet printhead, the nozzle plate including a nozzle through which ink is ejected, the nozzle optimally positioned in the nozzle plate. The nozzle plate further including at least one priming hole, the priming hole distinct from and of a smaller diameter than the nozzle, the priming holes positioned at selected locations of the nozzle plate to purge air from the ink jet print head. | 09-22-2011 |
20110234700 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes a plurality of head bodies each having a nozzle plate, a flow channel forming substrate having a plurality of pressure generating chambers that communicate with the plurality of nozzles and a manifold that communicates with the plurality of pressure generating chambers, and pressure generating, and a fixation plate having an exposure aperture formed so that the plurality of nozzles are exposed therethrough and on which the plurality of head bodies are fixedly positioned, wherein the edges of the exposure aperture formed on the fixation plate are located in a region opposite the manifold, and a depression is formed on a side of the fixation plate facing the nozzle plate by depressing the edges of the exposure aperture in the region opposite the manifold. | 09-29-2011 |
20110242218 | INDEPENDENT ADJUSTMENT OF DROP MASS AND VELOCITY USING STEPPED NOZZLES - Methods and systems of ejecting ink drops from an inkjet printer are disclosed. The methods and systems can include a printhead with one or more stepped nozzles each with an associated entrance diameter and exit diameter. Ink can be received into the printhead and formed into ink drops in the stepped nozzles. The ink drops can each have an associated drop mass and drop speed. The stepped nozzles can be provided such that the exit diameter can independently dictate the drop mass and the entrance diameter can independently dictate the drop speed. As such, the complexity of jet design optimization is reduced. | 10-06-2011 |
20110242219 | Durable Non-Wetting Coating on Fluid Ejector - A method of forming a nozzle plate of a fluid ejection device includes etching a bore in the first side of the multi-layer substrate, depositing a liner in the bore, removing a layer from a second side of the multi-layer substrate, wherein the removing exposes a closed end of the liner, applying a non-wetting coating to the closed end of the liner and an area surrounding the closed end of the liner, and removing the closed end of the liner, wherein removing the closed end of the liner opens a nozzle. | 10-06-2011 |
20110242220 | INK-JET PRINTER - An ink-jet printer comprises: a platen plate including a plurality of recesses, which are formed and regularly arranged in a front surface by digging from the front surface toward the back surface, and a suction hole extending from a part of the bottom surface of the recess through the back surface; and a print head having ink-discharging nozzles arranged in a nozzle face which is arranged in a position facing the front surface of the platen plate. The ink-discharging nozzles are arranged between an opening end of the recess and an opening end of the suction hole excluding an area directly above the suction hole of the platen plate. | 10-06-2011 |
20110254897 | SILICON INTERPOSER FOR MEMS SCALABLE PRINTING MODULES - A print module and a method of forming the same, the print module including a substrate, an ink jet die, and an interposer between the substrate and the ink jet die. The substrate includes an ink channel and an air vent, and the die includes a plurality of ink apertures. The interposer includes etched openings therein of a truncated pyramid shape; the openings of the interposer reconfiguring the ink channel and air vent passages between the substrate and die to allow for greater tolerance in alignment and manufacture of the print head module. | 10-20-2011 |
20110267404 | INKJET PRINTING DEVICE WITH COMPOSITE SUBSTRATE - An inkjet printhead die for an inkjet print head, wherein the inkjet printhead die comprises a composite substrate that includes a planar semiconductor member, a planar substrate member and an interface at which the planar semiconductor member is fused to the planar substrate member | 11-03-2011 |
20110285789 | Method of manufacturing at least one projecting section of nozzle plate, nozzle plate, inkjet head and image forming apparatus - A method of manufacturing at least one projecting section of a nozzle plate used in a liquid ejection head, includes: a partial lyophilic rendering step of rendering a lyophilic characteristic to a portion of a lyophobic film provided on an ejection surface side of a substrate in which a nozzle is formed, so as to form a lyophobic portion and a lyophilic portion on the ejection surface side of the substrate; a resin deposition step of depositing a curable resin on the lyophilic portion which has been rendered the lyophilic characteristic; and a curing step of curing the resin deposited on the lyophilic portion in such a manner that the cured resin forms the projecting section. | 11-24-2011 |
20110285790 | INKJET PRINTHEAD HAVING NOZZLE CHAMBERS WITH REDUNDANT INK INLETS - An inkjet printhead includes row of nozzle chambers. Each nozzle chambers has a roof spaced apart from a floor and sidewalls extending between the roof and the floor. Each nozzle chambers has an ink ejection opening defined in the roof, a first ink inlet defined in one of the sidewalls, and a second ink inlet defined in the floor. Each of the first and second ink inlets is in fluid communication an ink supply channel defined in the printhead for supplying ink to the row of nozzle chambers. | 11-24-2011 |
20110285791 | INKJET NOZZLE ARRANGEMENT WITH DISPLACEABLE PARTIAL CHAMBER WALL - A nozzle arrangement includes a wafer substrate defining an inlet channel; a nozzle chamber wall and a roof wall provided on the wafer substrate to define a nozzle chamber in fluid communication with the inlet channel, the roof wall defining an ink ejection port and the nozzle chamber wall defining a first gap; a paddle positioned in the nozzle chamber and reciprocally displaceable to eject ink from the ejection port; an actuating arm connected to the paddle, the actuating arm having a pair of actuating members and a heating circuit connected to one of the actuating members, and a sealing structure supported on the actuating arm, the sealing structure being positioned in first gap. The pair of actuating members comprise a resiliently flexible material. On receipt of an electrical signal, the actuating arm is displaced in a first direction, and on cessation of the electrical signal the actuating arm is displaced in a second direction opposite to the first direction. | 11-24-2011 |
20110292126 | MOLDED NOZZLE PLATE WITH ALIGNMENT FEATURES FOR SIMPLIFIED ASSEMBLY - An ink jet print head includes a molded nozzle plate, the molded nozzle plate further including molded die alignment features. The molded die alignment features can be registered to the apertures of the print head die. | 12-01-2011 |
20110298870 | MULTIPLE PRIMING HOLES FOR IMPROVED FREEZE/THAW CYCLILNG OF MEMSJet PRINTING DEVICES - An ink jet print head includes an ink chamber defined by an electrostatically actuated membrane and a nozzle plate opposing the membrane. The nozzle plate includes a nozzle hole and a group of priming holes, the priming holes configured to maintain a substantially ink free surface on the nozzle plate during a freeze thaw cycle of ink in the ink chamber. A method for accommodating expansion and contraction of ink during a freeze thaw cycle of ink in an ink chamber is also provided. The method includes providing a group of priming holes in a nozzle plate of the ink chamber, the group of priming holes maintaining a substantially ink free surface on the nozzle plate during the freeze thaw cycle. | 12-08-2011 |
20110316932 | NOZZLE COVERING FOR EJECTION CHIPS IN MICRO-FLUID APPLICATIONS - A micro-fluid ejection head conveys fluid to firing elements at differing heights in differing layers. The ejection head includes a base substrate. The firing elements are configured on the substrate to eject fluid upon activation. Individual elements are arrayed closer or farther to a common fluid via. A multiple-layer covering on the substrate defines nozzles openings corresponding to each firing element. A lower layer of the covering directs fluid to either the closer or farther elements while a higher layer directs fluid to the other elements. The lower and higher layers define channels to direct the fluid from the fluid via. The higher layer covers the channels in the lower layer, while a topmost layer covers the channels in the higher layer. Also, the topmost layer defines the nozzle openings in large and small opening sizes. Holes in the underlying layers register with the nozzle openings, but are oppositely sized. | 12-29-2011 |
20120001986 | Nozzle plate and method for manufacturing the nozzle plate, and inkjet printer head with the nozzle plate - The present invention provides a nozzle plate, the nozzle plate including: a first silicon substrate; and a second silicon substrate which has a crystal orientation different from that of the first silicon substrate and is bonded to the first silicon substrate, wherein the first silicon substrate includes a first through hole, and the second silicon substrate includes a second through hole which the first through hole communicates with, and has a different structure from that of the first through hole. | 01-05-2012 |
20120007919 | NOZZLE ASSEMBLY HAVING POLYMERIC COATING ON MOVING AND STATIONARY PORTIONS OF ROOF - A nozzle assembly for an inkjet printhead. The nozzle assembly includes: a nozzle chamber including a roof having a nozzle opening and a moving portion movable relative to a stationary portion of the roof. An actuator is configured to displace the moving portion relative to the stationary portion and cause ejection of ink through the nozzle opening. A polymeric coating covers the moving portion and the stationary portion. The polymeric coating is absent from a gap between the moving portion and the stationary portion. | 01-12-2012 |
20120007920 | METHOD OF MANUFACTURING NOZZLE PLATE, LIQUID EJECTION HEAD AND IMAGE FORMING APPARATUS - The method of manufacturing a nozzle plate which includes a nozzle having a tapered section and a linear section includes the steps of: forming an etching stopper layer for stopping dry etching of a silicon substrate, on a first surface of the silicon substrate; forming a mask layer on a second surface of the silicon substrate reverse to the first surface; performing a first patterning process with respect to the mask layer so that an opening section is formed in the mask layer; carrying out the dry etching of the silicon substrate through the opening section in the mask layer so that the tapered section of the nozzle is formed in the silicon substrate; carrying out dry etching of the etching stopper layer through the opening section in the mask layer so that at least a part of the linear section of the nozzle is formed in the etching stopper layer; and removing the mask layer. | 01-12-2012 |
20120013682 | LIQUID EJECTION HEAD AND METHOD OF MANUFACTURING THE SAME - Provided is a liquid ejection head, including: a flow path forming member including: an ejection orifice for ejecting liquid therefrom; and a liquid flow path communicated with the ejection orifice; a silicon substrate including a supply port for supplying the liquid to the liquid flow path; and a protective film which is formed on a wall surface of the supply port and which is formed of an organic resin which is the same as a material of a member forming the flow path forming member. | 01-19-2012 |
20120019598 | Bonded Microelectromechanical Assemblies - A MEMS device is described that has a body with a component bonded to the body. The body has a main surface and a side surface adjacent to the main surface and smaller than the main surface. The body is formed of a material and the side surface is formed of the material and the body is in a crystalline structure different from the side surface. The body includes an outlet in the side surface and the component includes an aperture in fluid connection with the outlet. | 01-26-2012 |
20120026247 | FLUID-EJECTION PRINTHEAD HAVING MIXING BARRIER - A fluid-ejection printhead die includes first fluid-ejection nozzles, second fluid-ejection nozzles, and a mixing barrier. The first fluid-ejection nozzles eject fluid of a first type, and are organized over a first row and a second row non-collinear to the first row. The second fluid-ejection nozzles eject fluid of a second type different than the first type, and are organized over a third row and a fourth row non-collinear to the third row. The fourth row is at least substantially collinear to the first row. The mixing barrier is at least substantially between the first row of the first fluid-ejection nozzles and the fourth row of the second fluid-ejection nozzles. | 02-02-2012 |
20120033015 | CONTINUOUS TYPE LIQUID EJECTION HEAD AND LIQUID EJECTION DEVICE - An inkjet print head is provided which can perform a good cleaning operation on its surface formed with ejection openings and improve a precision at which ink droplets land on a print medium. To this end, a conductive layer made of a conductive material is formed on a support board and subjected to a planarization process. A liquid ejection board is mounted on the support board at a predetermined position with high precision in such a manner that a sealing agent to protect electrical connections on the liquid ejection board does not protrude from the ejection opening surface. | 02-09-2012 |
20120038710 | INKJET HEAD AND METHOD OF MANUFACTURING INKJET HEAD - According to one embodiment, an inkjet head includes a nozzle plate, a base member, a frame-like member, an ink chamber, a supply channel and a discharge channel. The nozzle plate includes nozzles. The base member includes driving elements that cause the ink to be ejected from the nozzles, and is opposed to the nozzle plate. The frame-like member is interposed between the nozzle plate and the base member and includes first opening parts and a second opening part extending over all the first opening parts. The ink chamber is provided inside the frame-like member and communicates with the ink chamber. The supply channel is provided in the base member and communicates with the ink chamber to supply ink. The discharge channel is provided in the base member, communicates with the ink chamber to discharge ink, and is connected to the first opening parts through the second opening parts. | 02-16-2012 |
20120038711 | INK-JET HEAD AND METHOD OF MANUFACTURING THE SAME - According to one embodiment, an ink-jet head includes an insulative substrate, a nozzle plate opposed to the insulative substrate, a partition wall disposed between the insulative substrate and the nozzle plate, and including a bottom surface with a first width which is in contact with the insulative substrate, and a top surface with a second width less than the first width, which is in contact with the nozzle plate, and an adhesive which attaches the partition wall and the nozzle plate. | 02-16-2012 |
20120062652 | LIQUID EJECTION DEVICE AND LIQUID EJECTION METHOD - A liquid ejection device includes a head includes a head having a nozzle configured and arranged to eject a liquid, a liquid-receiving section configured and arranged to receive the liquid ejected from the nozzle when flushing is carried out by the head, and a rotating section configured and arranged to rotate the liquid-receiving section. According to this liquid ejection device, printing defects caused by accumulation of a liquid that has been ejected from the nozzle through flushing can be prevented. | 03-15-2012 |
20120062653 | INKJET PRINTHEAD HAVING BILAYERED NOZZLE PLATE COMPRISED OF TWO DIFFERENT CERAMIC MATERIALS - An inkjet printhead includes a bi-layered nozzle plate having a plurality of nozzle apertures. The bi-layered nozzle plate being includes a lower first nozzle plate formed from a first material and an upper second nozzle plate disposed on the first nozzle plate, the second nozzle plate being formed from a second material. The first and second materials are different from each other and are each independently selected from the group consisting of: silicon nitride, silicon oxide and silicon oxynitride. | 03-15-2012 |
20120069092 | LIQUID DISCHARGE METHOD, LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE APPARATUS - A liquid discharge head is arranged in a manner that in the cross section of a discharge port in a liquid discharge direction, the discharge port includes: at least one projection that is convex inside the discharge port; a first area, for holding a liquid surface connecting a pillar-shaped liquid that is elongated outside the discharge port; and second areas where a fluid resistance is lower than that in the first area so as to pull the liquid in the discharge port in a direction opposite to the liquid discharge direction; and the first area is formed in the direction in which the projection is convex, and the second areas are formed on both sides of the projection. | 03-22-2012 |
20120069093 | LIQUID EJECTION HEAD AND IMAGE FORMING APPARATUS INCLUDING THE LIQUID EJECTION HEAD - A liquid ejection head includes a common-chamber formation member including a common chamber to supply liquid to pressure chambers communicating nozzles for ejecting liquid droplets, a flexible thin-film member to form part of a wall face of the common chamber, and a thin-film support member bonded to the thin-film member with glue. The support member has an opening or a recessed portion at least partially having a shape that is broad in an area proximal to a first surface of the support member bonded to the thin-film member and becomes narrower as an area of the opening or the recessed portion is more distant from the first surface. The opening or the recessed portion is sealed with the thin-film member. A portion of the thin-film member corresponding to the opening or the recessed portion has the glue on only a periphery area of the portion that contacts the support member. | 03-22-2012 |
20120075385 | STREAM PRINTING METHOD - A printing method includes providing a print head. The print head includes a valve and at least one orifice. Fluid is ejected from the orifice in a generally continuous stream. The fluid includes a conductive material. The fluid is deposited in a pattern on a substrate to form an electrically conductive deposit. At least a portion of the pattern includes a generally straight line. | 03-29-2012 |
20120081463 | INKJET NOZZLE ASSEMBLY WITH DROP DIRECTIONALITY CONTROL VIA INDEPENDENTLY ACTUABLE ROOF PADDLES - An inkjet nozzle assembly having: a nozzle chamber for containing ink, the nozzle chamber including a floor and a roof having a nozzle opening defined therein; and a plurality of moveable paddles defining part of the roof. The plurality of paddles are actuable to cause ejection of an ink droplet from the nozzle opening. Each paddle includes a thermal bend actuator, and each actuator is independently controllable via respective drive circuitry such that a direction of droplet ejection from the nozzle opening is controllable by independent movement of each paddle. | 04-05-2012 |
20120081464 | PAGEWIDTH INKJET PRINTHEAD WITH DROP DIRECTIONALITY CONTROL - A stationary pagewidth inkjet printhead is comprised of a plurality of printhead integrated circuits butted end-on-end across the pagewidth. The printhead includes one or more nozzle rows extending along a longitudinal axis of the printhead, each nozzle row comprising a plurality of nozzles. One or more of the nozzles are configured to fire a droplet of ink at a plurality of predetermined different dot positions along the longitudinal axis. | 04-05-2012 |
20120081465 | INKJET PRINTHEAD WITH JOIN REGIONS SEAMLESSLY COMPENSATED BY DIRECTIONAL NOZZLES - A stationary pagewidth inkjet printhead has one or more nozzle rows extending along a longitudinal axis of the printhead. The printhead is comprised of a plurality of printhead modules having first and second opposite ends butted across a width of a page. Each butting pair of printhead modules defines a common join region, wherein a nozzle pitch across the join region exceeds one nozzle pitch, one nozzle pitch being defined as a minimum longitudinal distance between a pair of nozzles in a same nozzle row. A first nozzle positioned at the first end of a first printhead module in a butting pair is configured to fire ink droplets into a respective join region. | 04-05-2012 |
20120081466 | Liquid Ejecting Apparatus - A liquid ejecting apparatus includes: a plurality of flow channel units, each of which includes a pressure generating chamber operable to generate pressure therein and a nozzle plate formed with a nozzle from which liquid is ejected by the pressure; a plurality of drive units, each of which includes a piezoelectric vibrator operable to apply a pressure vibration to the pressure generating chamber, and which correspond to the plurality of the flow channel units, respectively; and a head casing, in which the plurality of the drive units are stored, and to which the plurality of the flow channel units are fixed. | 04-05-2012 |
20120092416 | Metalized Polyimide Aperture Plate And Method For Preparing Same - An aperture plate including a first layer having a first emissivity; a second layer having a second emissivity disposed over the first layer; wherein the first emissivity is higher than the second emissivity; and optionally, at least one additional layer disposed over the second layer. A method for preparing an aperture plate including providing a first layer having a first emissivity; disposing a second layer having a second emissivity over the first layer; wherein the first emissivity is higher than the second emissivity; optionally, disposing at least one additional layer over the second layer; and forming at least one aperture, wherein aperture formation can be before or after disposing the second layer over the first layer. An ink jet print head having an aperture plate including a first layer having a first emissivity; a second layer having a second emissivity disposed over the first layer; wherein the first emissivity is higher than the second emissivity; optionally, at least one additional layer disposed over the second layer; wherein one of the optional at least one additional layers disposed over the second layer is a coating layer for controlling surface tension. | 04-19-2012 |
20120092417 | LIQUID EJECTING APPARATUS AND CONTROL METHOD THEREOF - A liquid ejecting apparatus includes: a common liquid chamber which is common to each pressure chamber and stores ink, a first pressure chamber and a second pressure chamber which communicate with the common liquid chamber, a first nozzle which communicates with the first pressure chamber and a second nozzle which communicates with the second pressure chamber, a first piezoelectric vibrator which causes pressure fluctuation in ink in the first pressure chamber and a second piezoelectric vibrator which causes pressure fluctuation in ink in the second pressure chamber, and a communication flow path which makes the first pressure chamber and the second pressure chamber communicate with each other, wherein the flow of ink is generated in the communication flow path by driving the first piezoelectric vibrator and the second piezoelectric vibrator. | 04-19-2012 |
20120092418 | SINGLE-NOZZLE INKJET HEAD - A single-nozzle inkjet head includes a first chamber member and a second chamber member. The first chamber member has a first flow channel. The second chamber member is detachably connected with the first chamber member. The second chamber member includes a main body, a nozzle plate and an actuator. The main body has a second flow channel, wherein the second flow channel is in communication with the first flow channel for transporting a fluid. The nozzle plate is disposed on the main body, and has a nozzle. The actuator is disposed on the nozzle plate, and located around the nozzle. | 04-19-2012 |
20120105547 | LIQUID JETTING HEAD AND METHOD OF MANUFACTURING SAME - A liquid jetting head includes a nozzle plate, a liquid passage plate and a sealing plate. The nozzle plate is provided with a plurality of nozzle orifices. The liquid passage plate has a first face and a second face which are opposite to each other. The liquid passage plate is provided with a plurality of grooves which are arranged in a first direction perpendicular to a longitudinal direction of the groove on the first face, each groove having a communication port which passes through from the first face to the second face. The sealing plate for sealing opening faces of the grooves. The sealing plate is jointed to the first face so that a plurality of pressure generating chambers are formed. The nozzle plate is jointed to the second face such that the communication holes are communicated with the nozzle orifices respectively. | 05-03-2012 |
20120120153 | Nozzle Plate And Method Of Manufacturing The Same - A nozzle plate including protruding nozzles and a method of manufacturing the nozzle plate. The nozzle plate may include a body unit and at least one nozzle protruding from the body unit. The at least one nozzle may include an exit part having a constant cross-sectional area and a damper part having a cross-sectional area that decreases in a direction toward the exit part, wherein the damper part of the at least one nozzle includes a plurality of inner wall surfaces having different angles of inclination. | 05-17-2012 |
20120120154 | RECORDING APPARATUS - A liquid ejection apparatus has an ejection orifice ejecting a liquid; a liquid storage section storing the liquid; a conductive communication path forming member forming a communication path to supply the liquid from the liquid storage section to the ejection orifice; and an electrode provided inside the liquid storage section and used to detect a remaining amount of the liquid, the communication path is electrically connected to the electrode, and the electrical resistance value between the electrode and the communication path contacting the liquid when the liquid is present in the liquid storage section is smaller than the electrical resistance value between the electrode and the communication path when the liquid is not present in the liquid storage section, and a recording apparatus capable of detecting the presence or absence of ink in the recording head with high precision without increasing the size of the recording head can be provided. | 05-17-2012 |
20120120155 | DROPLET EJECTION HEAD AND METHOD FOR MANUFACTURING THE SAME - Provided are a method for manufacturing a droplet ejection head having a structure in which a substrate having an energy-generating element that imparts energy to a liquid to eject a liquid droplet from an ejection orifice and an orifice plate having the ejection orifice formed therein are laminated through a flow channel member for forming a pattern of a liquid flow channel that is a region in which the liquid flows, wherein at least one of a plate before being laminated and the flow channel member before being laminated has a void of at least one of a through-hole other than the ejection orifice and a recess in the face to be laminated; and the droplet ejection head. | 05-17-2012 |
20120120156 | INKJET PRINTHEAD WITH INK LEAKAGE CONTAINMENT WALLS FOR NOZZLE GROUPS - An inkjet printhead that has a substrate, a plurality of nozzle assemblies positioned on the substrate, each nozzle assembly having a nozzle opening from which ink is ejected and an actuator for receiving an activation pulse and, containment walls positioned on the substrate for separating the nozzles assemblies into a plurality of groups. Each of the containment walls surrounds a group of nozzle assemblies to restrict ink leaked from one of the groups of nozzle assemblies from contacting another of the groups of nozzle assemblies. | 05-17-2012 |
20120139998 | LIQUID EJECTION HEAD AND METHOD OF PRODUCING THE SAME - A liquid ejection head including a flow path forming member which forms an ejection orifice which is opened on a front surface and which ejects a liquid, and a liquid flow path which continues to the ejection orifice; and a substrate including a liquid chamber which is opened on a back surface on an opposite side of the front surface and which includes a first slope which becomes narrower from a back surface side toward a front surface side, a liquid pathway which is opened in the first slope and connects the liquid flow path and the liquid chamber, and a first hollow portion which is provided in a bottom portion of the liquid chamber. | 06-07-2012 |
20120147095 | INK COMPOSITION FOR ULTRAVIOLET CURABLE INK JETS, INK JET RECORDING APPARATUS USING THE SAME, INK JET RECORDING METHOD USING THE SAME, AND INK SET - An ink composition for ultraviolet curable ink jets including monomer A represented by a general formula (I): | 06-14-2012 |
20120176450 | LIQUID-EJECTING HEAD AND LIQUID-EJECTING APPARATUS - A liquid-ejecting head includes a nozzle plate having a nozzle opening that serves for liquid ejection; a channel-forming substrate including pressure-generating chambers that are in communication with the nozzle opening; a pressure generator that serves to generate pressure change in a liquid in the pressure-generating chambers; and a communication plate provided between the nozzle plate and the channel-forming substrate, the communication plate having a communication channel that forms a communication between the pressure-generating chambers and the nozzle opening. The communication plate has a circulation channel that is in communication with a common liquid chamber through the communication channel, the common liquid chamber being in communication with a plurality of the pressure-generating chambers in common. | 07-12-2012 |
20120188309 | LIQUID DROP EJECTOR HAVING SELF-ALIGNED HOLE - A method for forming a self-aligned hole through a substrate to form a fluid feed passage is provided by initially forming an insulating layer on a first side of a substrate having two opposing sides; and forming a feature on the insulating layer. Next, etch an opening through the insulating layer, such that the opening is physically aligned with the feature on the insulating layer; and coat the feature with a layer of protective material. Patterning the layer of protective material will expose the opening through the insulating layer. Dry etching from the first side of the substrate forms a blind feed hole in the substrate corresponding to the location of the opening in the insulating layer, the blind feed hole including a bottom. Subsequently, grind a second side of the substrate and blanket etch it to form a hole through the entire substrate. | 07-26-2012 |
20120194616 | UV CURABLE INKJET COMPOSITIONS FOR HIGH-DENSITY PRINT HEADS - A combination of: a) an inkjet print head having a nozzle density of at least 600 dpi and nozzles with an outer nozzle diameter D smaller than 25 μm; and b) a UV curable inkjet composition containing 0 to 10 wt % of one or more monofunctional monomers and at least A wt % of 2-(2-vinyloxyethoxy)ethyl acrylate, wherein both wt % are based on the total weight of the UV curable inkjet composition; and wherein A is defined by the formula 100 wt %−D×3.0 wt %/μm≦A≦100 wt %−D×1.0 wt %/μm. | 08-02-2012 |
20120218352 | FLOW CHANNEL STRUCTURE, METHOD OF MANUFACTURING SAME, AND LIQUID EJECTION HEAD - A flow channel structure includes: a first substrate in which a first flow channel section is arranged; a first adhesive layer which is arranged on the first substrate; a first noble metal layer containing gold and arranged over the first adhesive layer on the first substrate; a second substrate in which a second flow channel section is arranged; a second adhesive layer arranged on the second substrate; a second noble metal layer containing gold and arranged over the second adhesive layer on the second substrate; and an Au tubular structure disposed between the first and second noble metal layers which face to each other across the Au tubular structure, the Au tubular structure having a hollow portion serving as a connecting flow channel section which connects the first and second flow channel sections, a gold content of the Au tubular structure being not lower than 90 at. %. | 08-30-2012 |
20120218353 | LIQUID EJECTION HEAD - In order to provide a liquid ejection head which enables ejection of a droplet at a higher frequency, according to the invention, a piezoelectric vibrator | 08-30-2012 |
20120218354 | PRINTER - A roll paper printer enables opening the cover and platen using a 4-part parallel linkage mechanism without interfering with the inkjet head. The cover unit for the roll paper compartment of the roll paper printer opens and closes by means of the parallel linkage mechanism. The back end part of the platen frame part of this linkage mechanism is connected to the top end part of the rear parallel links and so that the can move down. | 08-30-2012 |
20120229569 | FLUID EJECTION DEVICE AND METHOD FOR FABRICATING FLUID EJECTION DEVICE - Disclosed is a fluid ejection device that includes a nozzle plate. The nozzle plate includes a plurality of nozzles for fluid ejection. Further, the fluid ejection device includes a substrate disposed below the nozzle plate. The substrate includes a top surface adapted to adhere to the nozzle plate. The substrate also includes at least one fluid via configured within the substrate for providing fluid to the plurality of nozzles of the nozzle plate. Furthermore, the fluid ejection device includes at least one supporting structure configured within each fluid via of the at least one fluid via. The at least one supporting structure is further configured at a predetermined depth from the top surface of the substrate to regulate the flow of the fluid from the at least one fluid via to the plurality of nozzles. Further, disclosed is a method to fabricate the fluid ejection device. | 09-13-2012 |
20120229570 | LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND METHOD OF MANUFACTURING LIQUID EJECTING HEAD - A liquid ejecting head includes head main bodies each having a nozzle plate having nozzle openings, and a case member to which the head main bodies are fixed, and moves relatively in a first direction with respect to a recording sheet, wherein a cover head which covers the side surfaces of the head main body and a peripheral border of the nozzle plate is provided at each head main body, a protective wall is provided for each head main body between an end portion in the first direction of the case member and the head main body, a range in a second direction of the cover head is included in a range in the second direction of the protective wall, and the protective wall is located further on the case member side than the nozzle plate in a third direction. | 09-13-2012 |
20120229571 | INKJET HEAD AND METHOD OF MANUFACTURING THE SAME - According to one embodiment, an inkjet head includes a base member, a nozzle plate, a frame and an adhesive. The nozzle plate is opposed to the base member. The frame is interposed between the base member and the nozzle plate, the frame including an adhering surface to which the nozzle plate is adhered, and a groove which is provided in the adhering surface. The adhesive is interposed between the adhering surface and the nozzle plate. | 09-13-2012 |
20120242750 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes: a flow channel formation member configured of silicon; a nozzle plate configured of silicon; a manifold member that, along with the flow channel formation members, defines a manifold that communicates with a plurality of pressure generation chambers; and a cover member that is affixed to the manifold member and to the surface of the flow channel formation member that is affixed to the nozzle plate and that seals the manifold. Here, the cover member is formed of a different material from the nozzle plate and is anchored at a distance from the nozzle plate. | 09-27-2012 |
20120256986 | LIQUID EJECTING APPARATUS AND METHOD OF CONTROLLING LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes a switch which performs switching between a platen applied voltage generation section side and the ground side with respect to a platen which supports a recording medium, wherein in a case where recording paper is present on the platen, the switch is switched to the ground side, so that the platen is set to have the same potential as that of a nozzle formation face, and on the other hand, in a case where the recording paper is not present on the platen, the switch is switched to the platen applied voltage generation section side, so that the platen is electrically charged to have negative polarity. | 10-11-2012 |
20120256987 | LIQUID EJECTING APPARATUS AND METHOD OF CONTROLLING LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes: a liquid ejecting head which ejects toward a landing target liquid from a nozzle opened in an electrically grounded nozzle formation face; a support section which is disposed spaced apart from the nozzle formation face of the liquid ejecting head when performing an ejection operation and supports the landing target; and a voltage application section which applies voltage to the support section, wherein the voltage which is applied to the support section is set to be equal to or higher than −305 V and lower than 0 V. | 10-11-2012 |
20120274706 | PATTERNED METALLIZATION ON POLYIMIDE APERTURE PLATE FOR LASER-ABLATED NOZZEL - An aperture plate for a print head of a printer can include a first layer having a first emissivity which is covered by a second layer having a second emissivity which is less than the first emissivity. In an embodiment, the second layer can be etched at nozzle locations to form openings in the second layer which have widths/areas greater than widths/areas of nozzles formed in the first layer. In another embodiment, the second layer can have a smaller thickness at the nozzle locations and a larger thickness away from the nozzle locations. Forming the openings in the second layer which are larger than the nozzles, or forming the second layer thinner at the nozzle locations prior to forming the nozzles, can provide a well-formed nozzle and an aperture plate having a low emissivity. | 11-01-2012 |
20120274707 | EJECTION DEVICES FOR INKJET PRINTERS AND METHOD FOR FABRICATING EJECTION DEVICES - Disclosed is an ejection device for an inkjet printer that includes an ejection chip having a substrate and at least one fluid ejecting element. The ejection device further includes a fluidic structure configured over the ejection chip. The fluidic structure includes a nozzle plate composed of an organic material and includes a plurality of nozzles. The fluidic structure further includes a flow feature layer configured in between the ejection chip and the nozzle plate. The flow feature layer is composed of an organic material and includes a plurality of flow features. Furthermore, the fluidic structure includes a liner layer encapsulating the nozzle plate. The liner layer further at least partially encapsulates each flow feature of the plurality of flow features. The liner layer is composed of an inorganic material. Further disclosed is a method for fabricating the ejection device. | 11-01-2012 |
20120293585 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes: a main head unit that ejects ink; a first flow channel member and a second flow channel member that include first and second flow channels, respectively, through which ink to be supplied to the main head unit flows; and a ring-shaped sealing member pinched by the first flow channel member and the second flow channel member. The first flow channel and the second flow channel communicate with the interior of a space area defined by the first flow channel member, the second flow channel member, and the sealing member, and an atmosphere exposure channel that connects the space area with the exterior is formed in a joining surface between the sealing member and the first flow channel member. | 11-22-2012 |
20120299997 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes a flow path formation substrate on which individual flow paths communicating with nozzle openings for ejecting liquid are provided, a first member which is provided at one surface side of the flow path formation substrate and has pressure generation units for generating pressure change in liquid in the individual flow paths, and a second member which is provided at a surface side of the flow path formation substrate, which is opposite to the first member. Dummy flow paths are provided on the flow path formation substrate independently of the individual flow paths. Exposure portions which expose a part of wall surfaces of the flow path formation substrate which form the dummy flow paths, are provided at least one of the first member and the second member. | 11-29-2012 |
20120306970 | IMAGE FORMING APPARATUS - An image forming apparatus includes a recording head including plural nozzles discharging liquid droplets, a head holder holding the recording head, a carriage holding the head holder, a guide member extending in a main scanning direction of the image forming apparatus, and a reference member extending in the direction substantially parallel to the direction of the guide member. Further, the carriage moves along the guide member, a part of the reference member is disposed in the carriage, and the head holder is attachably and detachably hooked on and held by the reference member. | 12-06-2012 |
20120320130 | FLUID EJECTION DEVICE AND METHOD FOR FABRICATING FLUID EJECTION DEVICE - Disclosed is a fluid ejection device that includes a nozzle plate. The nozzle plate includes a plurality of nozzles. Further, the fluid ejection device includes a flow feature layer. The flow feature layer includes a plurality of flow features. The fluid ejection device further includes an ejection unit. The ejection unit includes a first layer. The first layer includes a plurality of fluid vias. Further, the ejection unit includes a second layer. The second layer includes a plurality of fluid channels. Further, the second layer is attached to the first layer through a first intermediate silicon oxide layer. The ejection unit also includes a third layer. The third layer includes a plurality of ports. The third layer is also attached to the second layer through a second intermediate silicon oxide layer. Further disclosed are an ejection unit for a fluid ejection device and a method for fabricating the fluid ejection device. | 12-20-2012 |
20120327161 | METHOD OF MAKING HOLE IN SUBSTRATE, SUBSTRATE, NOZZLE PLATE AND INK JET HEAD - A method of making a hole in a substrate having a first surface and a second surface opposing the first surface and on which the hole is formed, includes forming a first depression in which the first depression is formed at the first surface of the substrate; forming a film in which the film is formed at the first depression; forming a second depression in which the second depression is formed at a location opposing the first depression of the second surface; and forming a hole in which the film is removed, the first depression and the second depression communicate with each other and thereby the hole is formed, wherein the second depression includes a plurality of straight lines and arcs in a plan view. | 12-27-2012 |
20130021411 | NONCIRCULAR INKJET NOZZLE - An inkjet nozzle includes an aperture with a noncircular opening substantially defined by a polynomial equation. A droplet generator is also described which includes a firing chamber fluidically coupled to a fluid reservoir, a heating resistor and a nozzle. The nozzle includes an aperture forming a passage from the firing chamber to the exterior of the droplet generator through a top hat layer. The nozzle is defined by a closed polynomial and has a mathematically smooth and mathematically continuous shape around aperture's perimeter wall, with two protrusions extending into the center of the aperture. | 01-24-2013 |
20130027472 | APPARATUS FOR EJECTING DROPLETS - Disclosed herein is an ejecting apparatus including: an upper bezel which includes an inlet through which ejectable fluid flows in from an external source, a channel which fluidly communicates with the inlet and through which the ejectable fluid flows, and an upper mounting portion which fluidly communicates with the channel and is opened downwardly; a lower bezel which includes a lower mounting portion which is opened upwardly to correspond to the upper mounting portion, and a nozzle slit which fluidly communicates with the lower mounting portion to eject the ejectable fluid to an outside, the lower bezel being fastened to the upper bezel, and a nozzle chip which is interposed between the upper mounting portion and the lower mounting portion to receive the ejectable fluid from the channel and discharge the ejectable fluid into the nozzle slit by being driven by an actuator. | 01-31-2013 |
20130050343 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS INCLUDING THE SAME - A nozzle portion in a recording head includes a first nozzle portion of which cross-sectional area is a first area and which is formed at the side of a pressure generation chamber and a second nozzle portion of which cross-sectional area is a second area which is smaller than the first area, which is formed to be continuous to the first nozzle portion through a step portion and of which front end portion is a nozzle opening. Further, when a cross-sectional area of an ink supply path is set to Ss, a cross-sectional area of the first nozzle portion is set to Sn, a flow path resistance of the first nozzle portion is set to Rn′, and a flow path resistance of the second nozzle portion is set to Rn, relationships of Sn/Ss≧⅓ and Rn′/Rn≦0.6 are satisfied. | 02-28-2013 |
20130063526 | Inkjet Unit and Inkjet Device - An inkjet unit and an inkjet device are provided. The inkjet unit includes a liquid compartment that forms a liquid receiving cavity and a jetting nozzle that forms a liquid discharge opening. The liquid receiving cavity is in communication with the liquid discharge opening to allow a liquid contained in the liquid receiving cavity to jet outward through the liquid discharge opening. The inkjet unit further includes a gas supply device. The gas supply device delimits a gas flow channel. The gas flow channel has a gas spray orifice that is arranged to surround an outer wall of the jetting nozzle. Accordingly, the gas supply device can spray a gas through the gas spray orifice toward the circumference of the jetting nozzle to clean the jetting nozzle, keeping liquid from attaching to the circumference of the jetting nozzle and thereby preventing the liquid from blocking the liquid discharge opening. | 03-14-2013 |
20130070025 | LIQUID EJECTION HEAD AND IMAGE FORMING APPARATUS INCLUDING SAME - A liquid ejection head including a nozzle plate having a nozzle array constructed of multiple nozzles from which liquid droplets are ejectable; a channel plate in which grooves that form part of multiple pressure chambers respectively communicating with the multiple nozzles are provided with partition walls interposed therebetween, a wall member that covers the grooves to form part of walls of the pressure chambers, and multiple first through-holes formed in the channel plate to connect the nozzles and the pressure chambers, respectively. The multiple first through-holes are provided with partition walls interposed therebetween, and each of the multiple first through-holes has a first opening and a second opening. The second opening is offset from the first opening in a direction in which the nozzle arrays extend. Each of the multiple first through-holes further has a portion between the first and second openings to change a direction of flow of liquid. | 03-21-2013 |
20130070026 | LIQUID EJECTION HEAD AND IMAGE FORMING APPARATUS INCLUDING SAME - A liquid ejection head including a nozzle plate having a nozzle array constructed of multiple nozzles, a channel member that forms multiple individual channels communicating with the multiple nozzles, a pressure generator to pressurize liquid within the multiple individual channels, and a common channel member that forms a common channel from which the liquid is supplied to the multiple individual channels. The channel member includes a first surface facing the common channel, a second surface provided at both ends of the channel member and protruding beyond the first surface toward a direction opposite a direction of flow of the liquid, and a third surface that connects the first and second surfaces. At least a gap between the common channel member and a part of the second surface is sealed by a seal member that forms a wall of the common channel between the channel member and the common channel member. | 03-21-2013 |
20130076832 | Liquid Ejecting Head - Disclosed herein is a liquid ejecting head is provided in which a plurality of pressure chambers is formed along a nozzle row direction where a plurality of pressure chambers is arranged in parallel with one another to be divided by each partition wall, and a change in pressure of a liquid in each of the pressure chambers is generated by driving of each pressure generation unit to allow the liquid to be ejected from each of the nozzles, wherein at least one of the pressure chambers located at opposite ends of the plural pressure chambers is a dummy pressure chamber from which the liquid is not ejected, and the dummy pressure chamber is filled with the liquid. | 03-28-2013 |
20130083126 | LIQUID EJECTION DEVICE WITH PLANARIZED NOZZLE PLATE - A liquid ejection device includes: a plurality of feed holes, each feed hole including a feed opening on the device side of the substrate; a plurality of fluid passageways controlling the flow of liquid from the feed openings to the chamber; and a polymer forming the nozzle plate and the walls of the fluid passageways and chambers, the nozzle plate including a first side that forms the top of the chambers and fluid passageways and a second side opposite the first side that forms the top of the nozzle plate, wherein the first side of the nozzle plate defines a nominally planar surface in a region proximate the plurality of feed openings, and wherein the first side of the nozzle plate does not deviate from the nominally planar surface by more than three microns in a region proximate the plurality of feed openings. | 04-04-2013 |
20130083127 | MICRO-EJECTION DEVICE - There is provided a micro-ejection device including: an ejector ejecting a fluid; and a body having an installation space in which the ejector is installed, wherein the installation space is provided with a guide unit inducing a line-contact or a point-contact between the ejector and the body. | 04-04-2013 |
20130106956 | Fluid Supply Housing | 05-02-2013 |
20130120500 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes a pressure chamber that communicates with a nozzle which has an opening at a nozzle formation surface; a communication plate where a common liquid chamber which supplies a liquid to the pressure chamber is formed; a liquid ejecting head having a flexible film which seals the opening surface at the nozzle formation surface side of the common liquid chamber in the communication plate; and a sealing member which has a cavity-shaped sealing hollow section and can be sealed by the nozzle formation surface being confronted in the sealing hollow section. The sealing member is configured so as to be sealable by at least a portion of the flexible film being confronted in the sealing hollow section in a sealed state of the nozzle formation surface. | 05-16-2013 |
20130127951 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - An inkjet printer head including a nozzle part, a driving part, a printing liquid supplying part, an adhesive and a leak preventing part. The nozzle part includes a first surface and a second surface opposite the first surface. A nozzle is formed in the first surface sprays a printing liquid. A receiving hole is formed in the second surface receives the printing liquid. The driving part is disposed on the second surface of the nozzle part and drives the nozzle part. The printing liquid supplying part supplies the printing liquid to the nozzle part. The adhesive bonds the printing liquid supplying part onto the second surface. The receiving hole is formed in the second surface. The leak preventing part is disposed between the printing liquid supplying part and the driving part. The leak preventing part is formed to cover an exposed surface of the adhesive. | 05-23-2013 |
20130127952 | METHOD FOR LASER DRILLING FLUID PORTS IN MULTIPLE LAYERS - A method includes attaching multiple layers to a back side of at least a portion of a fluid dispensing subassembly having at least one inlet port to form a fluid dispensing assembly, aligning a laser to a region of the fluid dispensing assembly, the region corresponding to the inlet port, and forming at least one hole in the region using a laser, the hole completing a path through the layers to the inlet port. A fluid dispensing assembly has a fluid dispensing subassembly having at least one inlet port, a fluid manifold having at least one outlet, at least two layers between the fluid dispensing subassembly and the manifold, and a fluid path in the at least two layers between the outlet and the inlet port, the fluid path having smooth walls and substantially uniform width. | 05-23-2013 |
20130135392 | INKJET PRINTING APPARATUS AND METHOD OF FORMING NOZZLES - A printing apparatus includes a first nozzle substrate having a first tapered nozzle unit aligned with a pressure chamber and a second nozzle substrate having a second tapered nozzle unit aligned with the first tapered nozzle unit and attached to the bottom of the first nozzle substrate. | 05-30-2013 |
20130135393 | Image Recording Apparatus - An image recording apparatus for recording an image on a sheet includes a recording section which records the image on the sheet in a transport passage for transporting the sheet in a transport direction; and a plurality of holding members which are provided while being separated from each other in a widthwise direction of the transport passage perpendicular to the transport direction and which press the sheet transported along the transport passage, from at least one of front and back surfaces of the sheet. At lease one holding member, which is provided at a central portion in the widthwise direction of the transport passage, is arranged on a downstream side in the transport direction as compared with the other holding members. | 05-30-2013 |
20130162718 | DROPLET EJECTION DEVICE AND IMAGE FORMING APPARATUS - A droplet ejection device includes a droplet ejection head. The droplet ejection head includes droplet ejection nozzles, a common liquid chamber, an air vent nozzle, and a nozzle face. The ejection nozzles are arranged side by side in a vertical direction. Each ejection nozzle has a first channel to eject droplets. The vent nozzle has a second channel to vent air from the common chamber. The nozzle face is disposed in the vertical direction or a direction tilted downward relative to the vertical direction. The first channel is tilted downward so that a side proximal to the nozzle face is lower than another side proximal to the common chamber. The vent nozzle is disposed above a topmost one of the ejection nozzles. The second channel is tilted upward so that a side proximal to the nozzle face is higher than another side proximal to the common chamber. | 06-27-2013 |
20130162719 | LIQUID EJECTING APPARATUS - A head unit is configured to be attached to a base and includes: a nozzle array group including a plurality of nozzle arrays each of which is defined by a plurality of nozzles that are arranged in a first direction and which are arranged in a second direction orthogonal to the first direction; and two correctors configured to adjust an angle of the plurality of nozzle arrays with respect to the base, one of the correctors disposed outside of the nozzle array group in the second direction. | 06-27-2013 |
20130162720 | NOZZLE PLATE MANUFACTURING METHOD, NOZZLE PLATE, DROPLET DISCHARGE HEAD MANUFACTURING METHOD, DROPLET DISCHARGE HEAD, AND PRINTER - A nozzle plate manufacturing method that offers excellent protection against discharge liquid and that enables a nozzle plate having high nozzle-hole accuracy to be manufactured with good yield. The invention also provides a nozzle plate, a droplet discharge head manufacturing method, and a droplet discharge head. | 06-27-2013 |
20130169713 | METHOD OF MAKING LIQUID DISCHARGE HEAD, LIQUID DISCHARGE HEAD, LIQUID DISCHARGE APPARATUS HAVING LIQUID DISCHARGE HEAD, AND MANUFACTURING APPARATUS OF LIQUID DISCHARGE HEAD - A method of making a liquid discharge head which includes a nozzle to discharge liquid, a pressure chamber communicating with the nozzle, a pressure chamber substrate to form surfaces of the pressure chamber, and a piezoelectric actuator to apply pressure to liquid in the pressure chamber having a lower electrode, a ferroelectric film, and an upper electrode, includes a silicon wafer supplying process, a position adjustment process, a surface treatment process to reform a surface of the lower electrode, a liquid applying process to apply ferroelectric precursor on the lower electrode by an inkjet method, a heating process to heat the ferroelectric precursor film, and a cooling process. A series of processes from the position adjustment process to the cooling process is iterated to form a ferroelectric film having a predetermined thickness. The series of processes is performed with certain waiting times inserted between key processes. | 07-04-2013 |
20130169714 | PRINTHEAD ASSEMBLY HAVING ELECTRICAL CONNECTOR FOR TRANSMITTING POWER AND DATA - A cartridge for a printer is provided having a body defining a number of fluid reservoirs, a lid covering the body to seal fluid inside the reservoirs, and a printhead operatively fed with fluid from the reservoirs. A base of each reservoir is provided with a raised portion which surrounds a fluid outlet through which fluid flows for supply to the printhead. Each raised portion being moulded in the body to separate the outlet from the base of each reservoir to ensure a sufficient flow rate of fluid from the reservoir. | 07-04-2013 |
20130182043 | LIQUID JET HEAD, LIQUID JET APPARATUS, AND METHOD OF MANUFACTURING LIQUID JET HEAD - The liquid jet head ( | 07-18-2013 |
20130187984 | NONCIRCULAR INKJET NOZZLE - An inkjet nozzle includes an aperture with a noncircular opening having a first segment substantially defined by a first polynomial equation and a second segment substantially defined by a second equation. | 07-25-2013 |
20130187985 | IMAGE FORMING APPARATUS INCLUDING LIQUID EJECTION HEAD - An image forming apparatus includes a liquid ejection head, a head tank, a liquid storage container, a liquid feed device, a supply valve, an exhaust passage, a float valve, an air release valve, and a suction device. The exhaust passage is disposed in the head tank and communicated with an ambient air. The float valve is disposed in the head tank to close the exhaust passage in response to an amount of liquid in the head tank. The air release valve opens and closes the exhaust passage of the head tank. When the suction device exhausts air from the exhaust passage with the air release valve open, the liquid feed device is driven to pressurize and feed the liquid. | 07-25-2013 |
20130187986 | LIQUID JET HEAD, LIQUID JET APPARATUS, AND METHOD OF MANUFACTURING LIQUID JET HEAD - A liquid jet head ( | 07-25-2013 |
20130187987 | LIQUID EJECTION HEAD AND METHOD OF MANUFACTURING SAME - A method of manufacturing a liquid ejection head includes the steps of ( | 07-25-2013 |
20130215199 | PRINTHEAD INTEGRATED CIRCUIT HAVING FRONTSIDE INLET CHANNELS AND BACKSIDE INK SUPPLY CHANNELS - Provided is a cartridge unit for a printer. The cartridge unit has upper and lower plate members having an ink bag located between the plate members to define an ink volume. The plate members can be displaced towards and away from each other by an external force. A bag constrictor assembly engages the plate members and is configured to act on the bag when the plate members are displaced towards each other to reduce the ink volume. A valve insert has an inlet valve to facilitate refilling of the bag with ink and an outlet valve to facilitate ink delivery to a printhead. A filter cover is positioned between the valve insert and the ink bag to filter contaminants and air bubbles passing between the ink bag and said valve insert. | 08-22-2013 |
20130222481 | INKJET HEAD AND METHOD OF MANUFACTURING THE SAME - An inkjet head includes a nozzle plate in which a nozzle having an ejection hole for ink is formed, an ink pressure chamber for supplying the ink to the nozzle, a first oscillating plate formed to surround the ejection hole of the nozzle of the nozzle plate, a first electrode formed to surround the nozzle of the nozzle plate and that is in contact with the first oscillating plate, a piezoelectric film configured to surround the nozzle of the nozzle plate and that is in contact with the first electrode, a second electrode formed to surround the nozzle of the nozzle plate and that is in contact with the piezoelectric film or the first oscillating plate, and a second oscillating plate formed to surround the nozzle of the nozzle plate and that is in contact with the first electrode, the second electrode, or the first oscillating plate. | 08-29-2013 |
20130229463 | PROCESS FOR PRODUCING LIQUID EJECTION HEAD AND LIQUID EJECTION HEAD - A process for producing a liquid ejection head including a recording element substrate having a principal surface and a support member having a color separation wall for ink flow paths and an outer wall, the substrate being narrower than the support member, a plane formed by conducting translation of a lower side of a substrate outer surface perpendicularly to the principal surface having an intersection with an outer wall top surface at a position distant from an inner edge of the outer wall top surface by a outward distance, including applying an adhesive onto top surfaces of the outer and color separation walls such that a surface height of the adhesive at the intersection is higher than that at a position distant from an inner edge of the color separation wall top surface by the outward distance, and bonding and fixing the substrate to the support member with the adhesive. | 09-05-2013 |
20130242000 | PROCESS FOR MANUFACTURING A NOZZLE PLATE AND FLUID-EJECTION DEVICE PROVIDED WITH THE NOZZLE PLATE - A nozzle plate for a fluid-ejection device, comprising: a first substrate made of semiconductor material, having a first side and a second side; a structural layer extending on the first side of the first substrate, the structural layer having a first side and a second side, the second side of the structural layer facing the first side of the first substrate; at least one first through hole, having an inner surface, extending through the structural layer, the first through hole having an inlet section corresponding to the first side of the structural layer and an outlet section corresponding to the second side of the structural layer; a narrowing element adjacent to the surface of the first through hole, and including a tapered portion such that the inlet section of the first through hole has an area larger than a respective area of the outlet section of the first through hole. | 09-19-2013 |
20130250003 | INK JET RECORDING APPARATUS AND RECORDED MATTER - A recording apparatus includes a head, wherein a manifold in which an ink flows, and a plurality of ink flow paths divided from the manifold and arranged in a first direction are formed in the head; a nozzle opening portion discharging the ink flowing from the manifold is formed in the ink flow path; when a maximum area is C | 09-26-2013 |
20130257990 | PRINTING METHOD - A printing method for producing durable images onto a printable recording medium is disclosed herein. The printing method encompasses providing a printable recording media; applying an ink composition containing a liquid vehicle and a colorant; wherein the print speed of the printing method is 50 fpm or higher. The printable recording media encompasses a base substrate, a first ink-receiving layer containing more than about 80 wt % of one or more particulate inorganic pigments and a second ink-receiving layer, on top of the first ink-receiving layer, including particulate inorganic pigments having an average particle size of about 0.1 to about 2 μm. | 10-03-2013 |
20130271529 | HEAD CHIP, LIQUID JET HEAD, AND LIQUID JET RECORDING APPARATUS - Provided are a head chip, a liquid jet head, and a liquid jet recording apparatus, which can reduce the effect on image quality due to difference in volume of jetted liquid caused by pressure loss of the liquid during the liquid is in the process of circulating through a liquid flow path. The head chip includes first and second circulation paths ( | 10-17-2013 |
20130278678 | LIQUID EJECTING HEAD - A liquid ejecting head includes: an orifice plate provided with an ejection port forming face which has an ejection port row formed thereon, the ejection port row including a plurality of ejection ports which eject a liquid arrayed in a first direction, wherein each of the ejection ports is formed inside a plurality of grooves which are provided on the ejection port forming face and extend in a second direction that intersects with the first direction, and with respect to a cross section of the groove in the first direction, which includes centers of the ejection ports, the groove has an inner wall surface in a circular arc shape, and the groove has an aperture larger than an aperture of the ejection port, in the first direction. | 10-24-2013 |
20130278679 | LIQUID DROPLET DISCHARGE HEAD, METHOD OF MANUFACTURING LIQUID DROPLET DISCHARGE HEAD, AND LIQUID DROPLET DISCHARGE DEVICE - In a liquid droplet discharge head, a first groove-shaped cavity is formed on a cavity plate, a second groove-shaped cavity is formed on a nozzle plate in addition to nozzle holes, when bonding the cavity plate and the nozzle plate to each other, the first groove-shaped cavity and the second groove-shaped cavity overlap to form a pressure chamber. | 10-24-2013 |
20130286097 | Forming A Funnel-Shaped Nozzle - Techniques are provided for making a funnel-shaped nozzle in a semiconductor substrate. The funnel-shaped recess includes a straight-walled bottom portion and a curved top portion having a curved sidewall gradually converging toward and smoothly joined to the straight-walled bottom portion, and the curved top portion encloses a volume that is substantially greater than a volume enclosed by the straight-walled bottom portion. | 10-31-2013 |
20130286098 | LIQUID DISCHARGE HEAD AND METHOD OF MANUFACTURING THE SAME - Provided is a liquid discharge head including: a discharge port that serves to discharge a liquid; a discharge energy generating element that generates energy used to discharge the liquid; a foam chamber that houses the discharge energy generating element and is communicated with the discharge port; and a flow channel that is communicated with the foam chamber and serves to supply the liquid to the foam chamber. An inclined surface is formed between: a side wall of the foam chamber on a side opposite to the flow channel; and a surface of the foam chamber on which the discharge port is formed, and the inclined surface is inclined to a plane on which the discharge energy generating element is formed. | 10-31-2013 |
20130307904 | LIQUID DROPLET EJECTION HEAD AND LIQUID DROPLET EJECTION APPARATUS - An ink jet type recording head includes a substrate, a nozzle plate having nozzles, and a sealing sheet, and the substrate and the nozzle plate are bonded to each other through a bonding film, and the substrate and the sealing sheet are bonded to each other through a bonding film. These bonding films are each obtained by drying and/or curing a liquid material containing an epoxy-modified silicone material. Further, by applying energy to each bonding film, the surface thereof is activated, and therefore, each bonding film exhibits a bonding property. By this bonding property, the substrate is bonded to the nozzle plate and to the sealing sheet. | 11-21-2013 |
20130321530 | Ink-Jet Head and Ink-Jet Recording Apparatus - The inkjet head for discharging a water-based ink for inkjet recording is disclosed, the inkjet head including two or more types of metal members used at portions to be brought in contact with the water-based ink, wherein at least two of the two or more types of the metal members are electrically connected, and the two or more types of the electrically connected metal members have spontaneous potentials each of which is measured with a reference electrode Ag/AgCl in the water-based ink and which provide an absolute value of a maximum difference therebetween, the absolute value being not more than 60 mV. An ink jet head is provided, in which any corrosion of a metal member is suppressed. | 12-05-2013 |
20130342607 | INKJET PRINT HEAD AND METHOD FOR MANUFACTURING THE SAME - An inkjet print head includes a jet assembly, a printed-circuit board and a barrier coating film. The jet assembly includes a nozzle plate including a jet orifice in a lower surface of the nozzle plate and through which ink is discharged, and an ink transfer pathway inside nozzle plate. The printed-circuit board is combined with the jet assembly. The printed-circuit board includes an integrated circuit and a connection electrode. The barrier coating film includes organic material, a flexible layer and a hydrophobic layer. The barrier coating film covers an inner and an outer surface of the jet assembly, and an outer surface of the printed-circuit board. The barrier coating film exposes the lower surface of the nozzle plate and an outer surface of the connection electrode. | 12-26-2013 |
20140022304 | Forming A Funnel-Shaped Nozzle - Techniques are provided for making a funnel-shaped nozzle in a semiconductor substrate. The funnel-shaped recess includes a straight-walled bottom portion and a curved top portion having a curved sidewall gradually converging toward and smoothly joined to the straight-walled bottom portion, and the curved top portion encloses a volume that is substantially greater than a volume enclosed by the straight-walled bottom portion. | 01-23-2014 |
20140028757 | LIQUID EJECTION HEAD AND METHOD FOR MANUFACTURING LIQUID EJECTION HEAD - A liquid ejection head includes a silicon substrate and an orifice plate disposed on or above the silicon substrate. The silicon substrate has a concave portion formed therein, and the orifice plate is disposed in the concave portion. | 01-30-2014 |
20140035998 | ORIFICE STRUCTURE FOR FLUID EJECTION DEVICE AND METHOD OF FORMING SAME - An orifice structure for a fluid ejection device includes a surface, an orifice formed through the surface, a first region of the surface projecting from the orifice, and a second region of the surface surrounding the first region, with the first region having a first surface energy, and the second region having a second surface energy higher than the first surface energy. | 02-06-2014 |
20140055528 | ACTUATABLE DEVICE WITH DIE AND INTEGRATED CIRCUIT ELEMENT - A fluid ejector includes a fluid ejection module and an integrated circuit element. The fluid ejection module includes a substrate having a plurality of fluid paths, a plurality of actuators, and a plurality of conductive traces, each actuator configured to cause a fluid to be ejected from a nozzle of an associated fluid path. The integrated circuit element is mounted on the fluid ejection module and is electrically connected with the conductive traces of the fluid ejection module such that an electrical connection of the module enables a signal sent to the fluid ejection module to be transmitted to the integrated circuit element, processed on the integrated circuit element, and output to the fluid ejection module to drive the actuator. | 02-27-2014 |
20140078221 | DROPLET DISCHARGE HEAD, AND IMAGE FORMING APPARATUS - Disclosed is a droplet discharge head including a nozzle substrate including a nozzle, an individual liquid chamber substrate including an individual liquid chamber, and a common liquid chamber substrate including a common liquid chamber, wherein the substrates are laminated, wherein a portion of a top surface of the common liquid chamber is flexible, wherein the top surface of the common liquid chamber is disposed at a side opposite to another side at which the nozzle plate is disposed, wherein the common liquid chamber has a shape such that one portion of the common liquid chamber is narrowed in a direction in which the substrates are laminated, wherein a height of a wall of the common liquid chamber in the direction in which the substrates are laminated is constant, and wherein the wall is substantially perpendicular to the top surface. | 03-20-2014 |
20140085381 | INKJET HEAD AND MANUFACTURING METHOD FOR THE INKJET HEAD - According to one embodiment, an inkjet head includes a base, a driving element, a nozzle plate, electrodes, wires, a supplying unit, and a discharging unit. The base includes an attachment surface and a side surface crossing the attachment surface. The driving element is attached to the attachment surface and includes pressure chambers. The nozzle plate is attached to the driving element and includes nozzles opened to the pressure chambers. The electrodes are provided in the pressure chambers. The wires are provided on the side surface and connected to the electrodes. The supplying unit is connected to the pressure chambers and supplies ink to the pressure chambers. The discharging unit is connected to the pressure chambers and discharges the ink from the pressure chambers. | 03-27-2014 |
20140085382 | Liquid Ejecting Head and Liquid Ejecting Apparatus - A liquid ejecting head includes: a nozzle plate in which a first nozzle row of nozzle openings aligned along a first direction X and a second nozzle row of nozzle openings aligned along the first direction X are disposed side by side along a second direction Y perpendicular to the first direction X; and a channel member including pressure generating chambers aligned along the first direction X, supply paths that supply liquid to the pressure generating chambers, and nozzle communication holes that allows the pressure generating chambers and the nozzle openings to communicate with each other, wherein the supply paths are located at an identical position in the second direction Y and are aligned along the first direction X, the nozzle communication holes include first openings communicating with the pressure generating chambers and second openings open to the nozzle plate. | 03-27-2014 |
20140098162 | LIQUID DROPLET DISCHARGE HEAD, LIQUID DROPLET DISCHARGE APPARATUS INCLUDING THE SAME, AND INK-JET RECORDING APPARATUS AS THE LIQUID DROPLET DISCHARGE APPARATUS - A liquid droplet discharge head includes an orifice plate that has a nozzle hole row in which a plurality of nozzle holes is formed in a row by press working. Liquid droplets are discharged to a to-be-landed-on member from the nozzle holes and land on the to-be-landed-on member, and a plurality of dummy pressed points for making uniform opening directions of the nozzle holes is formed on both of end sides of the nozzle hole row in the orifice plate. | 04-10-2014 |
20140098163 | INKJET PRINT HEAD - An ink jet printing device includes a pressure chamber, a first actuator membrane being arranged to form a first flexible wall of the pressure chamber, a first piezo-electric part being operatively connected to a surface of the first actuator membrane, a second actuator membrane being arranged to form a second flexible wall of the pressure chamber and a second piezo-electric part being operatively connected to a surface of the second actuator membrane, wherein the second flexible wall is mechanically decoupled from the first flexible wall. | 04-10-2014 |
20140118442 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - There is provided a liquid ejecting head in which a flow path width Wc of a pressure chamber is equal to or larger than 60 μm, and when a-50% average particle diameter of a quasi-diameter obtained based on a maximum projected area of glitter pigment is assumed to be R50, a maximum particle diameter of the quasi-diameter is assumed to be Rmax, and a thickness of the glitter pigment for the quasi-diameter is assumed to be Z, equations of 0.8≦R50≦1.1, 0.2>Z/R50≧0.02, and Rmax/Wc<0.1 are satisfied. | 05-01-2014 |
20140132674 | LIQUID EJECTION HEAD BODY AND METHOD OF MANUFACTURING THE SAME - A liquid ejection head body includes a substrate and a channel forming member arranged on the substrate. The channel forming member has a liquid ejection port for ejecting liquid and a liquid channel communicating with the liquid ejection port, while the substrate has an ejection energy generating element for generating energy for ejecting liquid at a first surface side and a liquid supply port for supplying liquid to the liquid channel in the inside. A conductive layer for electrically connecting the first surface side and a second surface side disposed opposite to the first surface side is arranged along the lateral surface of the liquid supply port. | 05-15-2014 |
20140160203 | INKJET PRINTING APPARATUSES, INKJET NOZZLES, AND METHODS OF FORMING INKJET NOZZLES - Provided is an inkjet printing apparatus. The inkjet printing apparatus includes a nozzle. The nozzle includes at least two nozzle parts. A first of the at least two nozzle parts has a first tapered shape, and a second of the at least two nozzle parts has a second tapered shape and extends from the first nozzle part. The first and second tapered shapes have a same taper direction. | 06-12-2014 |
20140160204 | LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS - A liquid ejecting head includes a nozzle plate, a flow path forming substrate, and a communication plate between the nozzle plate and the substrate and having a communication hole connecting a nozzle and a first opening of a pressure chamber. The first opening extends in a direction perpendicular to an arrangement direction of the pressure chambers. The first opening has a narrowed portion close to the communication hole. The communication hole has at least three edge lines which extend in a penetration direction. The communication plate is bonded to the substrate such that the ends of the edge lines at a surface close to the substrate are covered with the substrate that defines the narrowed portion on a surface close to the communication plate. | 06-12-2014 |
20140184697 | LIQUID JET HEAD AND LIQUID JET APPARATUS - The liquid jet head includes a nozzle guard as a liquid storage unit configured to store the residual liquid attaching to the nozzle plate. Channel lines include a dummy channel incapable of driving. Liquid is supplied into the dummy channel while being brought to a negative pressure. The nozzle plate includes a dummy nozzle hole communicated with the dummy channel. The dummy nozzle hole is formed at a position to aspirate the residual liquid stored using the nozzle guard. | 07-03-2014 |
20140184698 | NOZZLE PLATE, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - A silicon nozzle plate has excellent liquid resistance on an inner surface of a nozzle opening and a discharge surface. A plurality of the nozzle openings are disposed in a silicon substrate of the nozzle plate. A tantalum oxide film formed by atomic layer deposition is disposed on both surfaces of the silicon substrate and the inner surface of the nozzle opening. | 07-03-2014 |
20140204152 | NOZZLE UNIT FOR PRINTER AND PRINTER HAVING THE SAME - A nozzle unit for a printer that includes a sleeve having a guide path formed in the sleeve and through which ink passes, a nozzle hole seat arranged at one end of the sleeve and having a nozzle hole corresponding to the guide path, and a nozzle holder accommodating the sleeve and the nozzle hole seat, having an opening whose diameter is larger than a diameter of the nozzle hole of the nozzle hole seat so that the ink passing through the nozzle hole is externally discharged through the opening, and including a paramagnetic material. | 07-24-2014 |
20140210910 | DROPLET EJECTION DEVICE - A droplet ejection device comprising a flow passage, a nozzle orifice formed in a wall of the flow passage, a circulation system for circulating a liquid through the flow passage, and an actuator system for generating a pressure wave in the liquid in the flow passage, wherein an obstruction member is arranged in the flow passage in a position opposite to the nozzle orifice and projecting towards the nozzle orifice. | 07-31-2014 |
20140218441 | LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS AND METHOD FOR MANUFACTURING LIQUID EJECTING HEAD - A liquid ejecting head includes a communication hole that has a first opening which communicates with a pressure chamber side where pressure is applied to a supplied liquid at one end and a second opening which communicates with a nozzle side ejecting the liquid to which the pressure is applied at the other end, and communicates the pressure chamber and the nozzle with each other, an opening area of the second opening being larger than an opening area of the first opening. An inclined surface that is directed to the second opening is provided on a side where a distance between an edge of the first opening and an edge of the second opening in the first direction is shorter than on the other end side so that stagnation in the flow of the liquid and reduction in bubble discharge are prevented and stable liquid ejection is achieved. | 08-07-2014 |
20140232789 | INKJET RECORDING APPARATUS - An inkjet recording apparatus includes a support member having a plurality of ribs and supporting the sheet; a head disposed above the support member and ejecting ink to the sheet supported by the support member; and at least one contact portion disposed upstream of the head and configured to come in contact with the sheet so as to make the sheet a waved shape. The support member includes a first support portion comprising at least one first guide portions disposed corresponding to the at least one contact portion, and a plurality of second guide portions disposed corresponding to the plurality of ribs and disposed above the plurality of first guide portions. The support member further comprises a second support portion comprising a third guide portion disposed downstream of the first support portion. | 08-21-2014 |
20140232790 | INKJET RECORDING METHOD AND INKJET RECORDING DEVICE - An inkjet recording method includes a step of forming an image by imparting an actinic ray curable ink composition containing a pigment, a polyfunctional polymerizable compound in which a content ratio to a total polymerization component is 80% by mass or more and a sensitizer in which a molecular weight is 1,000 or more onto a recording substrate which is an aggregate of a nonabsorbable or a low absorbable fiber material from an inkjet head under the conditions in which an amount of ink droplets is from 25 pl to 200 pl and a distance between the recording substrate and the inkjet head is from 5 mm to 20 mm, and a step of curing the image by irradiating the formed image with an actinic ray under the conditions in which an oxygen partial pressure is 1.5×10 | 08-21-2014 |
20140240401 | Liquid Ejecting Head and Liquid Ejecting Apparatus - A liquid ejecting head includes: a first-member that has a first liquid-flow-path and discharges liquid in the first liquid-flow-path from a nozzle; a second-member that has a second liquid-flow-path communicating with the first liquid-flow-path; a seal-member that seals a coupling portion between the first liquid-flow-path of the first-member and the second liquid-flow-path of the second-member; and a support-member that is fixed to the first-member at a fixing area side which is located in a position different from a position where the nozzle is located when a plane in which the nozzle is formed is seen from above. The support-member is supported at the fixing area and projects toward the coupling portion, and supports, at a coupling portion side, the seal member at a first-member-side of the seal-member. The seal-member seals the coupling portion by applying pressure in a diameter direction of the first liquid-flow-path. | 08-28-2014 |
20140247308 | PRINTING APPARATUS AND PRINTING METHOD - A printing apparatus is provided in which a position of a joint of a first yellow nozzle group and a second yellow nozzle group in a predetermined direction is offset from a position of a joint of a first magenta nozzle group and a second magenta nozzle group in a predetermined position and a position of a joint of a first cyan nozzle group and a second cyan nozzle group in the predetermined position, and the position of the joint of the first magenta nozzle group and the second magenta nozzle group in the predetermined position is the same as the position of the joint of the first cyan nozzle group and the second cyan nozzle group in the predetermined direction. | 09-04-2014 |
20140285577 | LIQUID EJECTION HEAD AND PROCESS FOR PRODUCING THE SAME - Provided is a liquid ejection head including a substrate on a first surface of which an energy-generating element for generating energy for ejecting liquid is formed; and a flow path forming member formed on the substrate, the flow path forming member forming an ejection orifice for ejecting the liquid and a liquid flow path communicating with the ejection orifice. The flow path forming member includes, at a position surrounding the liquid flow path, a first depression that opens to an upper surface of the flow path forming member and a groove that opens to the first depression. The angle between the upper surface of the flow path forming member and a slope surface of the first depression on the flow path forming member side is an obtuse angle. The groove has a serrated side wall. | 09-25-2014 |
20140292933 | LIQUID EJECTING HEAD MODULE AND LIQUID EJECTING APPARATUS - A unit head has an inlet section that introduces ink from a side of a sub-tank through a porous member. The sub-tank has a pressure control section corresponding to each unit head, individually, and has an outlet section that delivers the ink from the pressure control section through a porous member. The pressure control section has a valve and a film that is displaced in response to a pressure change. The film is provided in an upper surface of the sub-tank. A frame has an inlet-side connection section to which the outlet section of the sub-tank is connected, an outlet-side connection section to which the inlet section of the unit head is connected, and a communication flow path that communicates with both connection sections. Both of the connection sections include porous members, and supply and receive the ink by a surface contact of the porous members with each other. | 10-02-2014 |
20140292934 | LIQUID EJECTION HEAD - The invention provides a liquid ejection head including a substrate provided with an energy-generating element for generating energy utilized for ejecting a liquid; and a nozzle plate provided with an ejection orifice from which the liquid is ejected as a droplet and an opening from which a static-removable gas for electrically neutralizing the droplet is jetted, the nozzle plate being joined to the substrate. | 10-02-2014 |
20140307029 | PRINTHEAD INCLUDING TUNED LIQUID CHANNEL MANIFOLD - A continuous liquid ejection printhead includes a plurality of nozzles having a nozzle to nozzle spacing of X. Each nozzle of the plurality of nozzles is in fluid communication with a liquid supply channel through a liquid dispensing channel. The liquid supply channel includes a liquid inlet. The liquid inlets of the liquid supply channels have a center to center inlet to inlet spacing that is greater than X. | 10-16-2014 |
20140307030 | METHOD OF MANUFACTURING WATER REPELLENT FILM, NOZZLE PLATE, INKJET HEAD, AND INKJET RECORDING DEVICE - An object is to provide a method of manufacturing a water repellent film, a nozzle plate, an inkjet head, and an inkjet recording device which are able to improve dynamic water repellency of a water repellent film which includes a straight-chain fluorine-based organic material. The method of manufacturing a water repellent film includes forming a first organic film on a silicon substrate with a silicon compound which does not include a fluorine atom as a raw material, forming an inorganic oxide film on the first organic film, and forming a second organic film on the inorganic oxide film with a straight-chain fluorine-containing silane coupling agent as a raw material. | 10-16-2014 |
20140327720 | FLUID DISPENSER - A fluid dispenser is disclosed herein. An example of such a fluid dispenser includes a member configured to define a plurality of orifices through which a fluid is ejected and a manifold including a plurality of fluid passageways each of which is configured to have a different angle relative to the member. This example of a fluid dispenser additionally includes a plurality of slots each of which is coupled to a different one of the fluid passageways of the manifold to conduct the fluid from the fluid passageways towards the orifices. Additional features and modifications of this fluid dispenser are disclosed herein, as are other examples of fluid dispensers. | 11-06-2014 |
20140340449 | METHOD FOR OPERATING A PRINTING SYSTEM - A printing system for printing a fluid includes a print head for ejecting droplets of the fluid; a first fluid storing section for storing a first amount of the fluid; a second fluid storing section for storing a second amount of the fluid, the second fluid storing section being in fluid communication to the pressure chamber in a power down situation; and a pre-tension device configured for arranging the second amount of the fluid in a pre-tension state in the second fluid storing section, thereby providing a positive fluid pressure on the nozzle in a power down situation, which positive fluid pressure is selected such that a third amount of fluid passes through the nozzle in response to said positive fluid pressure and forms a film on the nozzle plate. The printing system according to the invention supports the recovery of the print head after a power down situation. | 11-20-2014 |
20140362140 | LIQUID EJECTION HEAD - A liquid ejection head has an element substrate constituted of a substrate body having a plurality of energy generating elements for liquid ejection and a nozzle plate having a plurality of ejection ports arranged corresponding to the respective energy generating elements so as to form a plurality of ejection port rows each extending in a first direction, the rows being arranged side by side so as to expand in a second direction intersecting the first direction. The nozzle plate has also a groove section, or a plurality of hollow sections arranged to form a hollow section row, as extending in the first direction, at least between one of the opposite edges as viewed in the second direction of the nozzle plate and the ejection port row arranged close to the same edge. | 12-11-2014 |
20140375726 | CONTINUOUS JET PRINTING OF A FLUID MATERIAL - An apparatus and method are for printing a fluid material by a continuous jet printing technique. The apparatus includes a flow restricting structure arranged near an outflow opening for restricting a flow of the material between a reservoir and the outflow opening by a restricted passage through the flow restricting structure. Furthermore, the flow restricting structure, an actuating surface, and a nozzle are arranged to bind a micro volume directly adjacent an inside of the outflow opening for the purpose of guiding or reflecting pressure variations generated by the pressure regulating mechanism towards the outflow opening. | 12-25-2014 |
20150022590 | LIQUID EJECTION HEAD AND METHOD FOR MANUFACTURING SAME - A liquid ejection head includes a substrate, an energy-generating element provided on a front surface side of the substrate, the energy-generating element generating energy for ejecting liquid, sidewall members of a liquid flow path, and an ejection port forming member that defines an ejection port from which the liquid is ejected. In the liquid ejection head, sidewalls of the liquid flow path are formed of the sidewall members and a top wall of the liquid flow path is formed of the ejection port forming member, the sidewall members are each formed of a core member that extends from a front surface of the substrate and a covering member that covers the surface of the core member, the covering member covers the front surface of the substrate, and the ejection port forming member is formed of an inorganic material. | 01-22-2015 |
20150035904 | INKJET NOZZLE DEVICE HAVING HIGH DEGREE OF SYMMETRY - An inkjet nozzle device includes a main chamber having a floor, a roof and a perimeter wall extending between the floor and the roof. The main chamber includes: a firing chamber having a nozzle aperture defined in the roof and an actuator for ejection of ink through the nozzle aperture; an antechamber for supplying ink to the firing chamber, the antechamber having a main chamber inlet defined in the floor; and a baffle structure partitioning the main chamber to define the firing chamber and the antechamber, the baffle structure extending between the floor and the roof. The firing chamber and the antechamber have a common plane of symmetry. | 02-05-2015 |
20150035905 | APPARATUS AND METHOD FOR SINGLE PASS INKJET PRINTING - A method and an inkjet printing device for single pass printing on an ink-receiver having a surface includes a plurality of sets of nozzles for jetting N inks on the surface, wherein N is larger than or equal to one, the N inks including a first ink, and wherein the plurality of sets of nozzles includes a first and a second set of nozzles for jetting the first ink; the device further including a radiation curing device arranged to cure the first ink when jetted on the surface by the first set of nozzles, wherein the radiation curing device is positioned between the first set of nozzles and the second set of nozzles. | 02-05-2015 |
20150042723 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - By appropriately defining a flow path capacity from an opening of an ink supply path to a nozzle in a pressure chamber, a progress of thickening ink toward the pressure chamber is suppressed. In other words, by setting the individual flow path capacity to be large, specifically, to 4400 pl or higher, desirably 6210 pl or higher, it is possible to suppress the progress of the thickening of the ink even in a small-sized liquid ejecting head of which the shortest formation pitch between each of the nozzles is 1/300 inches. More specifically, a nozzle communication opening is provided between the pressure chamber and the nozzle, and a total capacity of the nozzle communication opening and the pressure chamber is configured to be 4400 pl or higher, desirably 6210 pl or higher. | 02-12-2015 |
20150077471 | LIQUID DISCHARGE HEAD AND IMAGE FORMING APPARATUS - A liquid discharge head includes a nozzle plate, a channel plate, a wall member, and a common liquid chamber. The nozzle plate includes nozzles, and the channel plate forms a plurality of individual channels communicating with the nozzles. The wall member forms at least one portion of a wall of the plurality of individual channels. The common liquid chamber, arranged at a side opposite the plurality of individual channels, supplies liquid to the individual channel. The wall member includes a deformable damper area, a reinforced area, and an area of reduced thickness. The damper area forms one portion of a wall of the common liquid chamber, and the reinforced area divides the damper area into plural areas. The area of reduced thickness, arranged in at least one portion of the reinforced area, has a thickness greater than the damper area and less than the reinforced area. | 03-19-2015 |
20150077472 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes: a flow channel member made of silicon; a nozzle plate made of silicon; a manifold member, which cooperates with the flow channel member to define a manifold in fluid communication with a plurality of pressure generation chambers; and a cover member, wherein the cover member is made of a different material than the nozzle plate, and wherein the cover member is affixed to the surface of the flow channel member that is affixed to the nozzle plate. The cover member fluidly blocks the manifold from the ambient atmosphere. | 03-19-2015 |
20150091982 | DROPLET EJECTION DEVICE - A droplet ejection device includes a pressure chamber; a nozzle orifice arranged in fluid connection with the pressure chamber; an actuator system for generating a pressure wave in a liquid present in the pressure chamber; and an obstruction member arranged in the pressure chamber in a position opposite to the nozzle orifice. The obstruction member comprises a first surface facing the nozzle orifice and rigidly coupled to a wall of the pressure chamber via a support. The support is arranged near the first surface of the obstruction member. The droplet ejection device according to the present invention may further comprise a structured nozzle inflow means which provides a gradual transition from the hollow shaped liquid passage to the nozzle orifice. The droplet ejection device prevents or at least mitigates air entrapment in dead volumes present in the interior of the droplet ejection device. | 04-02-2015 |
20150097897 | MULTI-LAYER ELECTROFORMED NOZZLE PLATE WITH ATTENUATION POCKETS - An ink jet printhead includes a nozzle plate including a nozzle, a recess in the nozzle plate, and a compliant layer that covers the recess and forms a sealed pocket that may be filled with air or another gas during use of the printhead. During actuation of a piezoelectric element during the ejection of ink from the nozzle, the sealed pocket attenuates an acoustic energy generated by the piezoelectric element, thereby reducing crosstalk to adjacent nozzles by the acoustic energy. | 04-09-2015 |
20150116426 | LIQUID EJECTION HEAD AND METHOD FOR PRODUCING THE SAME - A liquid ejection head including a substrate having an ejection-energy-generating element for generating energy for ejecting a liquid; an orifice plate including at least an ejection-orifice-forming wall that constitutes an ejection orifice for ejecting the liquid and an upper wall of a liquid chamber communicating with the ejection orifice, and a liquid chamber side wall that constitutes a side wall of the liquid chamber. The orifice plate is formed of an inorganic material. The liquid ejection head includes a plurality of liquid chambers; and an elastic member filled into a depressed portion formed between the liquid chamber side wall of one liquid chamber of the liquid chambers adjacent to each other and the liquid chamber side wall of the other liquid chamber. The upper end of the elastic member is arranged in a position higher than an upper face of the ejection-orifice-forming wall. | 04-30-2015 |
20150321475 | LIQUID EJECTION HEAD AND METHOD OF MANUFACTURING THE SAME - A liquid ejection head includes a recording element substrate that ejects liquid, and an element-substrate support member to which the recording element substrate is bonded with an adhesive. A groove to be filled with the adhesive is provided in a bonding region of the element-substrate support member, at which the element-substrate support member and the recording element substrate are bonded together, along a part or an entirety of the outer circumference of the recording element substrate. | 11-12-2015 |
20150328890 | LIQUID EJECTION HEAD AND RECORDING APPARATUS - Provided is a liquid ejection head including a support member; a liquid chamber member being fixed onto the support member through an adhesive and including a liquid chamber configured to store liquid therein; and a recording element substrate being fixed onto the liquid chamber member through the adhesive and including an ejection orifice from which the liquid is ejected and a recording element configured to generate ejection energy. The support member and the liquid chamber member have different coefficients of linear expansion. The surface of the liquid chamber member on the recording element substrate side includes a first region on which the adhesive for fixing the recording element substrate is applied; and a second region being a region other than the first region. The first region has a parallelogram shape, and the second region has a rectangular shape. | 11-19-2015 |
20150343775 | LIQUID EJECTION HEAD AND MANUFACTURING METHOD OF LIQUID EJECTION HEAD - A liquid ejection head with high environmental reliability which suppresses a crack of a Si substrate and peeling-off of an ejection port forming member by relaxing a residual stress in a printing element substrate and a manufacturing method of a liquid ejection head are provided. For that purpose, after the printing element substrate is bonded and fixed to a support member, the support member is screwed and fixed through an elastic member. | 12-03-2015 |
20150360477 | Systems, Devices, and/or Methods for Graphene Based Imaging Process - Certain exemplary embodiments can provide a printing system comprising one or more print heads each comprising a writing energy source. The one or more print heads can be constructed to form text and/or image elements by changing the physical and/or chemical properties of a media or by jetting of ink drops to on a media. The media and ink drops can comprise graphene or graphene derivatives. | 12-17-2015 |
20150367640 | METHOD FOR PRODUCING LIQUID-EJECTION HEAD - A liquid-ejection head including:
| 12-24-2015 |
20160001551 | MOLDED DIE SLIVERS WITH EXPOSED FRONT AND BACK SURFACES - In an example implementation, a printhead includes a die sliver molded into a molding. The die sliver includes a front surface exposed outside the molding and flush with the molding to dispense fluid, and a back surface exposed outside the molding and flush with the molding to receive fluid. Edges of the die sliver contact the molding to form a joint between the die sliver and the molding. | 01-07-2016 |
20160052271 | Liquid Ejecting Device and Method of Manufacturing Liquid Ejecting Device - A liquid ejecting device, having a fluid passage structure formed with multiple nozzles arranged in a particular nozzle arrangement direction and multiple passages respectively communicating with the multiple nozzles. The fluid passage structure has a metallic nozzle plate formed with the multiple nozzles which is arranged in a nozzle arrangement direction. Further, the metallic nozzle plate has a liquid ejection surface on which multiple ejection openings respectively corresponding to the multiple nozzles being formed, multiple convex parts protruding from the liquid ejection surface, the multiple convex parts being arranged along the nozzle arrangement direction, beside the multiple ejection openings, respectively. Further, the multiple convex parts are formed by press working applied to the nozzle plate from a side opposite to the liquid ejection surface. | 02-25-2016 |
20160075134 | INKJET PRINTHEAD comprising silicon-on-insulator substrate - An inkjet printhead integrated circuit includes: a silicon-on-insulator substrate having a first layer of silicon, an insulator layer disposed on the first layer of silicon and a second layer of silicon disposed on the insulator layer; a nozzle plate disposed on the second layer of silicon; and embedded inkjet nozzle devices. Each inkjet nozzle device includes a nozzle chamber defined in the second layer of silicon, each nozzle chamber having a roof which is part of the nozzle plate; an actuator for ejecting ink through the nozzle opening; and drive circuitry connected to the actuator. | 03-17-2016 |
20160075135 | INKJET nozzle device with roof actuator connected to lateral drive circuitry - An inkjet printhead integrated circuit includes: a substrate having a silicon layer; a nozzle plate disposed on the silicon layer; and embedded inkjet nozzle devices. Each inkjet nozzle device includes a nozzle chamber having a roof actuator; drive circuitry laterally disposed relative to the nozzle chamber; a connection arm extending parallel with the nozzle plate from the actuator towards the drive circuitry; and a metal via interconnecting each connection arm and the drive circuitry, the metal via extending perpendicularly to the nozzle plate. The drive circuitry is positioned proximal the nozzle plate relative to a plane of the floor. | 03-17-2016 |
20160082728 | LIQUID DISCHARGE HEAD AND IMAGE FORMING APPARATUS - A liquid discharge head includes a nozzle plate having nozzles arrayed to discharge liquid droplets; a passage plate to form individual liquid chambers communicating with the respective nozzles; and a wall surface member to form a wall surface of the individual liquid chambers. The passage plate is formed with at least three plate-shaped members stacked and bonded by an adhesive. The nozzle plate and one plate-shaped member, and another plate-shaped member and the wall surface member are bonded, respectively. The three plate-shaped members include separation wall parts forming separation walls between the individual liquid chambers. At least one of the three plate-shaped members has a separation wall width different from that of the others, to have fillets of the forced-out adhesive formed between the wall surfaces, and surfaces of the plate-shaped members, the nozzle plate, or the wall surface member. | 03-24-2016 |
20160082729 | INK JET HEAD AND PRINTER - An ink jet head includes a head body, a plurality of pipes, a plurality of flexible substrates, a reference plate, a plate base, a plurality of in-covers, and a plurality of side covers. Each of the in-covers includes an inner surface having a first mating surface in contact with the plate base, and an outer surface having a second mating surface in contact with the driving circuits. Each of the side covers includes an inner surface that is thermally coupled to a respective one of the plurality of in-covers and has a third mating surface in contact with the second mating surface section of the respective one of the plurality of in-covers, and an outer surface fastened to the print wiring substrate. | 03-24-2016 |
20160082730 | PRINT DEVICE - The present disclosure relates to a print device that can reduce the number of parts and also reduce the possibility of printing quality deterioration. The print device includes a first mount portion, a second mount portion and a head. The first mount portion is located in a first region, and the second mount portion is located in a second region. The second region is a region in which a distance from the nozzle face in the up-down direction is out of a predetermined range, and the first region is a region in which a distance from the nozzle face in the up-down direction is in the predetermined range. The first mount portion is connected to a reservoir passage. The reservoir passage has a sub-tank. The sub-tank is located in the second region. The second mount portion is connected to a non-reservoir passage that has no sub-tank. | 03-24-2016 |
20160107444 | METHOD OF MAKING INKJET PRINT HEADS HAVING INKJET CHAMBERS AND ORIFICES FORMED IN A WAFER AND RELATED DEVICES - A method of making inkjet print heads may include forming recesses in a first surface of a first wafer to define inkjet chambers. The method may also include forming openings extending from a second surface of the first wafer through to respective ones of the inkjet chambers to define inkjet orifices. The method may further include forming a second wafer including ink heaters, and joining the first and second wafers together so that the ink heaters are aligned within respective inkjet chambers to thereby define the inkjet print heads. | 04-21-2016 |
20160121607 | MICROFLUID DELIVERY DEVICE AND METHOD FOR MANUFACTURING THE SAME - Embodiments disclose herein are directed to a microfluidic delivery device that has a predominantly semiconductor structure, such as silicon. In particular, the structure for delivering fluid may be formed from polycrystalline silicon, also called polysilicon, or epitaxial silicon. The microfluidic delivery device that predominantly uses silicon based materials to form the structures that are in contact with the dispensed fluid results in a device that is compatible with a wide set of fluids and applications. | 05-05-2016 |
20160129691 | LIQUID EJECTION HEAD AND IMAGE FORMING APPARATUS INCLUDING SAME - A liquid ejection head includes a nozzle plate, a channel plate, a common-liquid-chamber member, and a deformable damper area. The nozzle plate includes plural nozzles to eject droplets of liquid. The channel plate includes individual liquid chambers communicated with the nozzles. The common-liquid-chamber member includes a common liquid chamber to supply the liquid to the individual liquid chambers. The deformable damper area forms a wall face of the common liquid chamber. The channel plate has an end in a direction perpendicular to a nozzle array direction in which the nozzles are arrayed. The end is opposed to a portion of the damper area and has a relief at a side facing the damper area to permit deformation of the damper area. | 05-12-2016 |
20160136952 | LIQUID EJECTION HEAD AND PROCESS FOR PRODUCING THE SAME - Provided is a liquid ejection head capable of stably ejecting a liquid at a practical liquid droplet velocity without separating minute liquid droplets before ejection of main liquid droplets in the case of reducing the amount of liquid droplets by reducing a nozzle diameter of the liquid ejection head. In a liquid ejection head including a nozzle for ejecting a liquid, a recess portion recessed relative to a nozzle inner wall surface is formed on a nozzle inner wall in a region having a nozzle inner diameter of 15 μm or less. | 05-19-2016 |
20160136954 | INK JET RECORDING HEAD - Provided is an ink jet recording head, including a member provided with an ejection orifice for ejecting ink, in which the ink jet recording head further includes a water-repellent layer including a cured product of a condensed product obtained by condensation of a hydrolyzable silane compound having an epoxy group and a hydrolyzable silane compound having a perfluoropolyether group on a surface of the member on a side on which the ejection orifice opens. | 05-19-2016 |
20160136955 | INKJET HEAD THAT CIRCULATES INK - An inkjet head that is able to circulate ink. The inkjet head includes a diaphragm plate, a first restrictor plate, one or more chamber plates, a second restrictor plate, and an orifice plate. The orifice plate forms a plurality of nozzles. The chamber plates form a plurality of chambers corresponding with the nozzles, and also form a return manifold for receiving ink from the chambers when circulating the ink through the inkjet head. The diaphragm plate forms a diaphragm that seals the chambers. The first restrictor plate controls a flow of ink between the chambers and the return manifold to circulate the ink through the inkjet head. The second restrictor plate controls the flow of ink between a supply manifold and the chambers. | 05-19-2016 |
20160159093 | LIQUID EJECTING APPARATUS - A head unit includes: a base extended in a first direction; a first head which is fixed to the base and includes a first nozzle plate; a second head which is fixed to the base, includes a second nozzle plate, and is configured to form dots in a line in the first direction with the first head; a first corrector configured to adjust arrangement of the first head with respect to the base, and disposed at a first side in a second direction orthogonal to the first direction with respect to the first head; and a second corrector configured to adjust arrangement of the second head with respect to the base, and disposed at a second side opposite to the first side in the second direction with respect to the second head. The first and second nozzle plates are disposed between the first and second correctors in the second direction. | 06-09-2016 |
20160185113 | LIQUID EJECTION HEAD, LIQUID EJECTION UNIT, AND APPARATUS FOR EJECTING LIQUID - A liquid ejection head is provided. The liquid ejection head includes at least two nozzle lines configured to have a plurality of nozzles for ejecting liquid disposed in respective lines, a plurality of individual liquid chambers configured to be in communication with corresponding nozzles of the nozzle lines, and at least two circulation channels corresponding to the nozzle lines, configured to be in communication with the individual liquid chambers. The at least two circulation channels are in communication with each other through a bridging channel disposed in a direction intersecting with the nozzle line direction, and the bridging channel and the circulation channels are disposed at different positions in a thickness direction of a member which forms the bridging channel and the circulation channels. | 06-30-2016 |
20160193835 | LIQUID EJECTING HEAD AND MANUFACTURING METHOD THEREOF | 07-07-2016 |
20160200101 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS | 07-14-2016 |
20160250852 | Liquid Ejecting Head and Liquid Ejecting Apparatus | 09-01-2016 |
20160375689 | PRINTHEAD ASSEMBLY WITH FLUID INTERCONNECT COVER - In one example implementation, a printhead assembly includes a fluid intake section, a fluid interconnect integrated with the fluid intake section to receive fluid from an ink supply assembly, and an air-permeable, fluid-resistant, fluid interconnect cover installed over the fluid interconnect. | 12-29-2016 |
20170232739 | MICROFLUIDIC ASSEMBLY AND METHODS OF FORMING SAME | 08-17-2017 |
20170232740 | LIQUID EJECTING HEAD UNIT AND LIQUID EJECTING APPARATUS | 08-17-2017 |
20180022092 | HEAD MODULE, LIQUID JETTING APPARATUS INCLUDING THE SAME, AND CASE | 01-25-2018 |
20180022112 | NOZZLE COMPENSATION FOR SHUTTLE BASED PRINTERS | 01-25-2018 |
20190143680 | HEAD CHIP, LIQUID JET HEAD AND LIQUID JET RECORDING DEVICE | 05-16-2019 |
20190143684 | LIQUID JET HEAD AND LIQUID JET RECORDING DEVICE | 05-16-2019 |
20190143685 | LIQUID JET HEAD AND LIQUID JET RECORDING DEVICE | 05-16-2019 |
20190143686 | JET HOLE PLATE, LIQUID JET HEAD, AND LIQUID JET RECORDING APPARATUS | 05-16-2019 |
20190143687 | LIQUID DISCHARGE HEAD AND CHANNEL STRUCTURE | 05-16-2019 |
20190143692 | JET HOLE PLATE, LIQUID JET HEAD, LIQUID JET RECORDING APPARATUS, AND METHOD FOR MANUFACTURING JET HOLE PLATE | 05-16-2019 |
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20220134741 | PRINT HEAD - A print head includes a generation portion that amplifies an input signal to generate a drive signal, an ejection portion that includes a first driving element driven by a drive signal, and ejects a liquid in response to the drive of the first driving element, a supply portion that includes a first switch for switching between supply and non-supply of the drive signal to the first driving element, and a sound emitting portion that includes a second driving element driven by the drive signal, and a second switch for switching between supply and non-supply of the drive signal to the second driving element, and emits sound in response to the drive of the second driving element, in which the first switch and the second switch are turned on exclusively. | 05-05-2022 |