Class / Patent application number | Description | Number of patent applications / Date published |
347057000 | Drive signal application | 66 |
20080239009 | INKJET PRINTHEAD HAVING MEMS SENSORS FOR DIRECTIONALLY HEATED INK EJECTION - An inkjet printhead is provided having nozzles, bubble forming chambers containing ejectable ink, generally planar heater elements each bonded on one side to an associated chamber so that the other side faces into the chamber, a MEMS fluid sensor having a MEMS sensing element for detecting the presence or otherwise of the ejectable ink in the chamber, and control circuitry for measuring the current passing through the sensing element during its heating. The heater elements receive heating pulses to form gas bubbles in the ejectable ink on the side facing into the chamber which cause ink ejection from the nozzle. Each chamber has a dielectric layer proximate the side of the heater element which has a thermal product less than 1495 Jm | 10-02-2008 |
20080266362 | RECORDING HEAD DRIVING METHOD AND RECORDING APPARATUS - A recording head includes electrothermal transducers associated with temperature sensing elements. A method for driving the recording head includes supplying driving energy to the electrothermal transducer, and evaluating a temperature change in a temperature fall interval, occurring after supplying of driving energy to the electrothermal transducer, based on temperature information acquired from the temperature sensing element. The method further includes changing a setting value of the driving energy supplied to the electrothermal transducer, determining an energy value for driving the electrothermal transducer based on the evaluated temperature change and an energy value supplied to the electrothermal conversion element, and recording data on a recording medium by driving the electrothermal transducer according to the determined energy value. | 10-30-2008 |
20080278545 | Method Of Operating A Thermal Bend Actuator - Provided is a method of operating a thermal bend actuator of a printhead nozzle arrangement of a printhead using an open actuator test circuit. The test circuit includes an open actuator test input, a column enable input and a row enable input; a drive transistor operatively linking said thermal actuator to a power supply; a bleed transistor arranged in parallel with the thermal actuator; a sense transistor operatively linking an output of the drive transistor and inputs of the thermal actuator and bleed transistor to a sensing node. The method includes the step of actuating the actuator to facilitate printing by enabling the column and row enable inputs to deactivate the bleed and sense transistors and to activate the drive transistor to link the thermal actuator to the power supply. The method also includes the step of testing the actuator's continuity by enabling the open actuator test input to activate the bleed and sense transistors, so that the thermal actuator is short-circuited and the sense node is pulled high if the integrity of thermal actuator is open-circuit. | 11-13-2008 |
20090002457 | PRINTHEAD SUBSTRATE, INKJET PRINTHEAD, AND INKJET PRINTING APPARATUS - A detector circuit for detecting a malfunction of a circuit due to a low third power supply voltage that has the same amplitude and potential as an input signal is provided. Based on an output signal of the detector circuit, whether an output of a second power supply voltage generation circuit for activating a heater driving circuit is allowed or not is determined. When the third power supply voltage is low and the heater driving circuit operates improperly, no power supply voltage is supplied from the second power supply voltage generation circuit. Since no power supply voltage is supplied to the heater driving circuit, the heater driving circuit does not drive a corresponding heater. | 01-01-2009 |
20090040277 | INKJET IMAGE FORMING APPARATUS - An inkjet image forming apparatus includes a simulation driving circuit having the same characteristics as a driving circuit of a heater corresponding to several nozzles in a head-chip. The inkjet image forming apparatus adjusts a driving power-supply signal applied to a pre-driver to drive an nMOSFET connected to the heater using the simulation driving circuit, and acquires information of additional resistance compensating for a heater driving current. The inkjet image forming apparatus performs a printing process using the acquired additional resistance information, resulting in implementation of a superior print quality. | 02-12-2009 |
20090102890 | INKJET PRINT HEAD - An inkjet print head comprises an array of print head heater circuits. Each circuit has a heater element ( | 04-23-2009 |
20090195614 | Inkjet Printhead Nozzle Arrangement With Actuator Arm Slot Protection Barrier - A nozzle arrangement for an inkjet printhead comprises a substrate defining an ink supply channel; a nozzle chamber structure mounted on the substrate, the nozzle chamber structure defining a nozzle chamber in fluid communication with the ink supply channel and a nozzle rim defining an ink ejection port in fluid communication with the nozzle chamber, the nozzle chamber structure further defining a slot in a first side wall thereof; a post, provided outside of the nozzle chamber, extending from the substrate; and a thermal actuator mechanism comprising an actuator arm extending from the post and through the slot to terminate freely in the nozzle chamber. The actuator arm comprises a slot protection barrier extending substantially orthogonally therefrom, the slot protection barrier positioned adjacent to the first side wall and spaced therefrom to define an ink holding area between the slot protection barrier and the first side wall. | 08-06-2009 |
20090237458 | Inkjet Nozzle Arrangement With Rectangular Plan Nozzle Chamber And Ink Ejection Paddle - A nozzle arrangement for an inkjet printhead comprises a substrate assembly incorporating an electrical drive circuitry layer and defining an ink inlet channel; a nozzle chamber structure extending from the substrate assembly and defining a nozzle chamber in fluid communication with the ink inlet channel and an ink ejection port in fluid communication with the nozzle chamber, the nozzle chamber being rectangular in plan; an anchor extending from the substrate assembly; a thermal bend actuator extending from the anchor and electrically coupled to the drive circuitry layer; and a lever arm coupled to the thermal bend actuator, pivotally supported by the substrate assembly and terminating in a paddle within the nozzle chamber. Upon receipt of a driving signal from the drive circuitry layer, the thermal bend actuator bends to induce movement of the paddle and effect ejection of ink in the nozzle chamber through the ink ejection port. The paddle has a rectangular profile substantially corresponding to the nozzle chamber. | 09-24-2009 |
20090256890 | Printhead Nozzle Arrangement With Dual Mode Thermal Actuator - A pagewidth inkjet printhead assembly has a plurality of nozzle arrangements. Each nozzle arrangement comprises walls defining an ink chamber having an ink supply channel and an ink ejection port having an ink spreading prevention rim; a thermal actuator mechanism for ejecting ink from the chamber via the ejection port, the thermal actuator mechanism including an actuator arm having two layers which are formed from a conductive, resiliently flexible material, said layers surrounding a central material layer so that said two layers are in thermal balance with the arm in a quiescent state; and drive circuitry for supplying the thermal actuator mechanism with a drive current, the drive circuitry being operable in a first and second operative mode. Tn the first operative mode, the drive circuitry supplies current to the thermal actuator mechanism sufficient to cause the thermal actuator mechanism to bend to a degree whereby ink is expelled from the ink ejection port. In the second operative mode, the drive circuitry supplies current to the thermal actuator mechanism insufficient to cause ink the thermal actuator mechanism to bend to such degree whereby ink is expelled from the ink ejection port. | 10-15-2009 |
20100149274 | Energy Control Of A Nozzle 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 drive transistor provides an energy pulse to the resistive element of the actuator upon receipt of a control pulse. Each energy pulse has energy of less than 200 nanojoule. | 06-17-2010 |
20100208003 | PRINTHEAD WITH MULTIPLE HEATERS IN EACH CHAMBER - An inkjet printhead with an array of ink chambers, each chamber having a plurality of nozzles. Multiple heater elements are positioned in each of the ink chambers, and electrically connected to each other in series. Drive circuitry selectively provides the heaters with drive signals such that a single drive signal simultaneously actuates the all the heater elements. Each generates a separate vapour bubble to eject ink through each of the plurality of nozzles. By putting multiple actuators in a single chamber, and providing each actuator with a corresponding nozzle (or nozzles), each nozzle ejects drops of smaller volume, and having different misdirections. Smaller drops with differing misdirections are less likely to create any visible artefacts. | 08-19-2010 |
20100231652 | INKJET NOZZLE ASSEMBLY HAVING BILAYERED PASSIVE BEAM - An inkjet nozzle assembly comprises: a nozzle chamber having a nozzle opening and an ink inlet; and a thermal bend actuator for ejecting ink through the nozzle opening. The actuator comprises: an active beam for connection to drive circuitry; a first passive beam fused to the active beam; and a second passive beam fused to the second first passive beam. The first passive beam is sandwiched between the active beam and the second passive beam such that when a current is passed through the active beam, the active beam expands relative to the passive beams, resulting in bending of the actuator and ejection of ink through the nozzle opening. | 09-16-2010 |
20110037809 | NOZZLE ASSEMBLY FOR 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 is also included. 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 latches data in one of the registers of the shift register. A control gate outputs a control pulse in response to data in the transfer register. A drive transistor provides an energy pulse to the resistive element of the actuator upon receipt of the control pulse. | 02-17-2011 |
20110043572 | PAIRED DROP EJECTOR METHOD OF OPERATION - A method of ejecting droplets of liquid from a paired drop ejector, the method includes the steps of providing a chamber having a dividing wall that forms a first and second portion and the first portion includes a first nozzle mated with a first heater and the second portion includes a second nozzle mated with a second heater; providing liquid to the first portion and second portions of the chamber through an open end of the enclosure; providing a first electrical pulse to the first heater to provide thermal energy for ejecting a droplet of liquid from the first nozzle; and providing a second electrical pulse to the second heater to provide thermal energy for ejecting a droplet of liquid from the second nozzle; wherein the second electrical pulse is delayed relative to the first electrical pulse by a first predetermined delay time. | 02-24-2011 |
20110090288 | 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. | 04-21-2011 |
20110157281 | PRINTHEAD FOR THERMAL INKJET PRINTING AND THE PRINTING METHOD THEREOF - The present invention relates to a printhead for thermal inkjet printing and the printing method thereof. The printhead comprises: a substrate having a plurality of orifices with a firing element in each of said plurality of orifices, wherein said plurality of orifices are arranged in a single column, and said printhead is disposed at an angle to a horizontal direction along which said printhead scans; and a firing circuits for energizing said plurality of firing elements to eject ink on a printing medium by respectively transmitting a plurality of firing signals to said plurality of firing elements. According to the present invention, the print speed and resolution can be improved. | 06-30-2011 |
20110261114 | STIMULATOR/FILTER DEVICE THAT SPANS PRINTHEAD LIQUID CHAMBER - A jetting module includes a nozzle plate, a thermal stimulation membrane, and an enclosure. Portions of the nozzle plate define a nozzle. The thermal stimulation membrane includes a plurality of pores. The enclosure extends from the nozzle towards the thermal stimulation membrane to define a liquid chamber positioned between the nozzle and the thermal stimulation membrane. The liquid chamber is in fluid communication with each of the nozzle and the plurality of pores. The liquid chamber is spanned by a portion of the thermal stimulation membrane. A source provides a liquid under pressure through the thermal stimulation member with the pressure being sufficient to jet a stream of the liquid through the nozzle after the liquid flows through the thermal stimulation membrane. | 10-27-2011 |
20120007923 | PRINTHEAD HAVING CONTROLLED VAPOR BUBBLE GENERATORS - A printhead is provided having vapor bubble generators which each have a chamber having a fluid ejection port and a heater, and circuitry configured to provide current pulses to the heater to generate vapor bubbles in fluid within the chamber. The pulses have a heating pulse of a first voltage and duration immediately followed by an ejection pulse of a second voltage and duration, the second voltage being higher than the first voltage. | 01-12-2012 |
20120081469 | PAGEWIDTH INKJET PRINTHEAD CONFIGURED SUCH THAT PRINTED DOT DENSITY EXCEEDS NOZZLE DENSITY - A stationary pagewidth inkjet printhead has one or more nozzle rows extending along a longitudinal axis of the printhead. Each nozzle is configured to fire a droplet of ink at a plurality of predetermined different dot positions along the longitudinal axis, such that a printed dot density exceeds a nozzle density of the printhead. | 04-05-2012 |
20120081470 | METHOD OF CONTROLLING DROP DIRECTIONALITY FROM INKJET NOZZLE USING MULTIPLE INDEPENDENTLY-ACTUABLE ROOF PADDLES - A method of controlling a direction of droplet ejection from an inkjet nozzle having a plurality of moveable paddles, the method includes the steps of: (i) actuating a first thermal bend actuator via respective first drive circuitry such that a respective first paddle bends towards a floor of the nozzle chamber; (ii) actuating a second thermal bend actuator via respective second drive circuitry such that a respective second paddle bends towards a floor of the nozzle chamber; and (iii) thereby ejecting a droplet of ink. Actuation of the first and second thermal bend actuators is independently controlled via the first and second drive circuitry so as to control the direction of droplet ejection. | 04-05-2012 |
20120081471 | INK-JET CHIP - The present invention relates to an ink-jet chip, adaptive for a printing device, at least comprising: a plurality of ink-jet heating elements and an ink-jet signal generating circuit. The ink-jet signal generating circuit at least includes: a counter electrically connected with the printing device, for receiving a counter control signal and a pulse signal, and generating a plurality of counter signals corresponding to the counter control signal and the pulse signal; and a decoder electrically connected with the counter, for receiving and decoding the plurality of counter signals, for generating a plurality of address signals, and selecting a corresponding ink-jet heating element basing on the plurality of address signals. | 04-05-2012 |
20120154489 | HEAD UNIT, PRINTING DEVICE, AND PRINTING METHOD - To carry out temperature control of ink in an appropriate manner, the invention includes a head having nozzles; driving elements for carrying out an operation to eject ink from the nozzles on the basis of a drive signal; transistors for generating the drive signal, the transistors emitting heat when the drive signal is generated; and a Peltier element provided correspondingly with respect to the transistors; wherein temperature control of ink inside the head is carried out according to a first heat conduction mode in which heat emitted by the transistors is conducted to the ink inside the head, and a second heat conduction mode in which heat emitted by the transistors is conducted to one of the junctions of the Peltier element, whereby a transition is made to heat absorption at another junction of the Peltier element and heat is conducted to the ink inside the head. | 06-21-2012 |
20130010033 | DRIVING CIRCUIT, LIQUID DISCHARGE SUBSTRATE, AND INKJET PRINTHEAD - A driving circuit which includes a plurality of MOS transistors electrically connected in parallel between a first node and a second node, and drives a load electrically connected between the first node and a third node by the plurality of MOS transistors, wherein the plurality of MOS transistors include at least two MOS transistors having channel lengths different from each other and thus having threshold voltages different from each other. | 01-10-2013 |
20130135397 | INKJET RECORDING APPARATUS - When a non-aqueous ink having a high density is used, a physical quantity defined as “density/viscosity” is equal to or more than a reference value, and therefore printing on a recording sheet is performed using a drive signal with a waveform for suppressing a residual vibration of the ink. Likewise, as to an ink having a low density, when the viscosity of the ink is low, the physical quantity is equal to or more than the reference value, and therefore printing on a recording sheet is performed using the drive signal with a waveform for suppressing a residual vibration of the ink. On the contrary, when the physical quantity is less than the reference value, printing on a recording sheet is performed using the drive signal with a normal waveform. | 05-30-2013 |
20140210912 | THERMAL INK JET PRINTING - According to an example, a method for TIJ printing may include applying, by a processor, F electrical firing pulses to a resistor of a TIJ printhead for a duration of about 0.50 to 1.00 μs to jet a latex ink or a dispersed polymer particle ink from a nozzle. According to another example, a TIJ printing apparatus may include a TIJ printhead including a firing chamber to jet a latex ink or a dispersed polymer particle ink from a nozzle, and a resistor to heat the latex ink or the dispersed polymer particle ink to jet from the nozzle. The TIJ printing apparatus may further include a memory storing machine readable instructions to apply F electrical firing pulses to the resistor for a duration of about 0.50 to 1.00 μs to jet the latex ink or the dispersed polymer particle ink, and a processor to implement the machine readable instructions. | 07-31-2014 |
20150029267 | LIQUID EJECTING HEAD, SUBSTRATE FOR LIQUID EJECTING HEAD, AND PRINTING APPARATUS - A print head includes upper protective members located at positions corresponding to heat generating resistor elements to protect the heat generating resistor elements, and further, a part of the protective member being eluted to ink when a current flows inside in a state in which the ink is reserved in the pressure chambers. The print head includes a drive element and a logic circuit capable of allowing a current to independently flow in each of the upper protective layers so as to elute a part of the upper protective layer, in which the current flows, to the ink. | 01-29-2015 |
20160059551 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - There is provided a miniaturized liquid ejecting head and a liquid ejecting apparatus on which the liquid ejecting head is mounted. A plurality of ink supply ports are formed on a print element substrate to supply ink to a bubble generation chamber. Electrothermal transducing elements are arranged only in regions interposed between the plurality of ink supply ports each other. A drive circuit for driving the electrothermal transducing element is arranged in a region that is not included in the region interposed between the plurality of ink supply ports each other. | 03-03-2016 |
347058000 | Wiring | 39 |
20080239010 | HEAD MODULE, LIQUID DISCHARGE HEAD, AND LIQUID DISCHARGE APPARATUS - A head module includes lines of head chips, each head chip having energy-generating elements for discharging liquid and electrodes for electrically connecting the energy-generating elements to a control substrate, and a wiring board having wires for electrically connecting the electrodes to the control substrate. The head module drives the energy-generating elements through the wiring board to discharge liquid. The wiring board includes connecting sections connecting the wires to the respective electrodes, common wire sections joining some of the wires that are common to the head chips, and a terminal section connecting the wires to the control substrate at one side of the wiring board. The wires in the connecting and terminal sections are arranged in a single-layer structure along a horizontal direction. The wires in the common wire sections are arranged in a multi-layer structure in which portions of the wires are stacked in the vertical direction. | 10-02-2008 |
20090002458 | INK JET PRINT HEAD SUBSTRATE AND INK JET PRINT HEAD - An ink jet print head substrate is provided which can prevent voltage drop variations during driving, no matter in what way the ejection energy generation elements are driven, and which can also apply a stable energy to the ejection energy generation elements at all times. The ink jet print head substrate of this invention has a plurality of kinds of ejection energy generation elements to generate different magnitudes of ink ejection energy and wiring portions. The print head substrate also has a plurality of wiring layers arranged to at least partly overlap one another. The wiring portions connected to the different kinds of ejection energy generation elements are provided at least partly in different wiring portions. | 01-01-2009 |
20090058948 | LIQUID EJECTION HEAD AND RECORDING APPARATUS - A liquid ejection head includes a plurality of ejection outlets for ejecting a liquid droplet; a plurality of flow paths communicating with the ejection outlets; an ink supply port for supplying liquid to the flow paths; and a plurality of heat generating elements provided correspondingly to the ejection outlets, for generating thermal energy for ejecting liquid present inside the flow paths. The plurality of heat generating elements is arranged in a staggered fashion with predetermined intervals with respect to a direction of a long side of the ink supply port. Adjacent staggered ones of the heat generating elements are connected to a common wiring line and are connected to individual wiring lines. | 03-05-2009 |
20090207210 | LIQUID DISCHARGE HEAD - A recording head including outlets disposed in a staggered pattern so that the distances from an ink inlet to the outlets differ alternately for adjacent outlets. A recording head includes an outlet group including a plurality of outlets on at least one side of an ink inlet. The outlet group includes first outlets and second outlets, wherein the distance from the ink inlet to the first outlets differs from the distance from the ink inlet to the second outlets. First recording elements and second recording elements including heat resistors are provided. The first recording elements and second recording elements correspond to the first outlets and the second outlets, respectively, and are disposed in first ink channels and second ink channels, respectively. The first recording elements are rectangular, whereas the second recording elements are substantially square. | 08-20-2009 |
20090303293 | LIQUID DISCHARGE SUBSTRATE AND LIQUID DISCHARGE HEAD INCLUDING THE SAME - A liquid discharge substrate includes a first substrate having an element, on a first surface, that generates energy for discharging liquid; a plurality of first electrodes electrically connected to the element and passing from the first surface to a second surface of the first substrate opposite to the first surface; a second substrate that is in contact with the second surface to support the first substrate; and second electrodes provided between the first substrate and the second substrate and electrically connected to the plurality of first electrodes. | 12-10-2009 |
20100134566 | ELEMENT SUBSTRATE, AND PRINTHEAD, HEAD CARTRIDGE, AND PRINTING APPARATUS USING THE ELEMENT SUBSTRATE - This invention relates to a printhead element substrate having a plurality of electrothermal transducers and a plurality of switching elements which drive the plurality of electrothermal transducers. The element substrate has a level converter which is shared by adjacent electrothermal transducers and steps up an input driving signal, and a switch circuit which supplies the driving signal output from the level converter to one of the adjacent electrothermal transducers. The switch circuit switches the supply destination of the driving signal in accordance with an external input selection signal. | 06-03-2010 |
20100201750 | FLUID EJECTION DEVICE WITH OVERLAPPING FIRING CHAMBER AND DRIVE FET - A fluid ejection device with a firing chamber from which fluid is ejected, a heating element that heats fluid in the firing chamber and, drive circuitry for the heating element having a field effect transistor (FET). At least part of the firing chamber overlaps the FET when viewed in a direction parallel to the direction of fluid ejection, and the firing chamber and the FET is separated by a layer of insulating material. | 08-12-2010 |
20110122202 | LIQUID-EJECTING RECORDING HEAD AND METHOD OF PRODUCING THE SAME - A method of producing a recording head including a substrate provided with an element that generates energy utilized for ejecting a liquid, a wiring member that is connected to the substrate, and a supporting member that supports the substrate and the wiring member includes applying a sealant to a region existing between a side surface of the substrate and the supporting member through a communicating path that connects the region to an outer peripheral area of the supporting member. | 05-26-2011 |
20110134191 | PRINTHEAD AND METHOD OF MANUFACTURING PRINTHEAD - A printhead may include a flow channel unit configured to discharge liquid. The printhead may include an actuator unit configured to apply discharge energy to the liquid in the flow channel unit. The printhead may include a flat flexible substrate connected to the actuator unit and configured to supply a drive signal to the actuator unit. The printhead may include a plurality of contact points disposed in an outline of the actuator unit in plan view and configured to electrically connect the actuator unit and the flat flexible substrate. The printhead may include a reinforcing member configured to fix a reinforcing portion, which includes at least part of an outer periphery of the actuator unit and the flat flexible substrate. | 06-09-2011 |
20110134192 | INK JET PRINT HEAD SUBSTRATE AND INK JET PRINT HEAD - An ink jet print head substrate is provided which can prevent voltage drop variations during driving, no matter in what way the ejection energy generation elements are driven, and which can also apply a stable energy to the ejection energy generation elements at all times. The ink jet print head substrate of this invention has a plurality of kinds of ejection energy generation elements to generate different magnitudes of ink ejection energy and wiring portions. The print head substrate also has a plurality of wiring layers arranged to at least partly overlap one another. The wiring portions connected to the different kinds of ejection energy generation elements are provided at least partly in different wiring portions. | 06-09-2011 |
20110141198 | LIQUID-EJECTION RECORDING HEAD AND METHOD OF MANUFACTURING LIQUID-EJECTION RECORDING HEAD - A recording head includes a substrate whose first surface has an element that generates energy used for ejecting liquid; a first portion that supports a second surface of the substrate; a wiring member having multiple electrode leads connected to multiple electrode pads provided in the substrate; a second portion that supports the wiring member; and a sealant that seals a section including a connection section between the electrode pads and the electrode leads. A region surrounded by the substrate, the second portion, and the electrode leads is provided with an ascending portion that increases in height in a direction extending from the second surface toward the first surface, the ascending portion increasing in height from a first end to a second end of the region in an arrayed direction of the electrode leads. | 06-16-2011 |
20110211024 | RECORDING HEAD - A recording head includes: a recording element substrate having a plurality of discharge ports discharging a liquid and an energy generating element generating energy used to discharge the liquid from the discharge ports; an electrical wiring substrate having an opening portion in which the recording element substrate is provided and applies a driving signal to the recording element substrate; an electrical connection portion in which an electrode portion of the recording element substrate and an electrode portion of the electrical wiring substrate are electrically connected to each other by a wire; and a sealing material covering and sealing the electrical connection portion, wherein the electrical connection portion is provided with a reference member as a reference of at least one of an upper limit position and a lower limit position of the height of the surface of the sealing material with respect to thickness direction of the recording element substrate. | 09-01-2011 |
20130010034 | LIQUID DISCHARGE HEAD - A liquid discharge head includes a recording element substrate including an electrode pad, a support member including a recess that supports the recording element substrate on a bottom surface thereof, an electric wiring member, and a sealant. The electric wiring member includes an opening through which the recording element substrate is exposed, an electric lead wire extending from the opening and connected to the electrode pad, and a protrusion formed in the opening and extending between a side surface of the recording element substrate and an inner side surface of the recess facing the side surface. A distal end of the protrusion is in contact with the bottom surface of the recess. The sealant is disposed in a region surrounded by a surface of the protrusion, the bottom surface of the recess, the inner side surface of the recess, and the side surface of the recording element substrate. | 01-10-2013 |
20130120502 | INKJET PRINT HEAD - Provided is an inkjet print head in which, without causing an increase in print head size, printing elements that can perform ejection at a high frequency are densely arrayed. For this purpose, an ink supplying port and a wiring line, which are common to a predetermined number of printing elements, are prepared, and a substrate on which the ink supplying ports and the wiring lines are alternately arranged at the same pitches as an array pitch of the printing elements is also prepared. | 05-16-2013 |
20130215200 | FINE WIRING PATTERN, MANUFACTURING METHOD THEREOF, AND THERMAL PRINT HEAD - According to the present disclosure, a manufacturing method of a fine wiring pattern is disclosed. The manufacturing method includes preparing a support member, forming a first layer on the support member by thick-film printing, and forming a second layer including Ag on the first layer by the thick-film printing. The method also includes forming a predetermined fine wiring pattern by performing an etching process upon the first layer and the second layer. | 08-22-2013 |
20130286103 | THERMAL INK-JETTING RESISTOR CIRCUITS - Electronic circuitry compensates for variations or sags in electrical voltage within a thermal ink-jetting (TIJ) printing apparatus. Ground potential and other supply-related voltages are monitored and corresponding signals are provided. The signals are used, directly or by other circuitry, to affect the biasing of one or more transistors coupling TIJ resistors to supply voltage or ground nodes. Printing errors and related problems associated with voltage variations are reduced or eliminated accordingly. | 10-31-2013 |
20140002549 | SEMICONDUCTOR DEVICE, LIQUID DISCHARGE HEAD, LIQUID DISCHARGE CARTRIDGE, AND LIQUID DISCHARGE APPARATUS | 01-02-2014 |
20140240402 | LIQUID DISCHARGE HEAD SUBSTRATE, LIQUID DISCHARGE HEAD, AND METHOD OF MANUFACTURING LIQUID DISCHARGE HEAD SUBSTRATE - A liquid discharge head substrate includes a base; a pair of wiring lines; a heat-generating resistive layer, which is in contact with the wiring lines, and which has a portion corresponding to a space between the wiring lines, the portion forming an electrothermal transducer; an insulating layer which covers the heat-generating resistive layer and the wiring lines and which contains Si; a protective layer which covers at least one region of the insulating layer which contains Ir; and an intermediate layer which is placed between the insulating layer and the protective layer. The intermediate layer contains a material represented by the formula Ta | 08-28-2014 |
20150062251 | SUBSTRATE FOR LIQUID EJECTING HEAD, LIQUID EJECTING HEAD, AND RECORDING APPARATUS - A substrate for a liquid ejecting head according to an exemplary embodiment of the present invention includes a first area having a plurality of ejection heaters and a driving circuit that is configured to supply electric energy to the plurality of ejection heaters disposed thereon, a second area having a signal supplying circuit that is configured to supply an electric signal to the driving circuit disposed thereon, and a heater that is configured to heat the substrate and that includes a first portion disposed in the first area and a second portion disposed in the second area. The magnitude of a current supplied to the first portion differs from the magnitude of a current supplied to the second portion. | 03-05-2015 |
20150062252 | LIQUID EJECTION HEAD SUBSTRATE, LIQUID EJECTION HEAD, AND RECORDING APPARATUS - A liquid ejection head substrate according to an exemplary embodiment of the present invention includes a plurality of ejection heaters arranged in a first region, a drive circuit that is arranged in the first region and configured to supply electric energy to the plurality of ejection heaters, a signal supply circuit that is arranged in a second region and configured to supply an electric signal to the drive circuit, and a substrate heating heater including a first portion arranged in the first region and a second portion arranged in the second region, in which a resistance value per unit length along a direction of a current of the first portion is different from a resistance value per unit length along a direction of a current of the second portion. | 03-05-2015 |
20150085020 | LIQUID EJECTION HEAD - A liquid ejection head includes
| 03-26-2015 |
20150321476 | LIQUID EJECTION HEAD, METHOD FOR MANUFACTURING LIQUID EJECTION HEAD, AND LIQUID EJECTING APPARATUS - A liquid ejection head including: a support member, a plurality of printing element boards arranged linearly on the support member, an electric wiring member fixed to the support member, and configured to transmit an electrical signal necessary to eject a liquid to the plurality of printing element boards, | 11-12-2015 |
20160193834 | ELEMENT SUBSTRATE, LIQUID DISCHARGE HEAD, AND PRINTING APPARATUS | 07-07-2016 |
347059000 | Integrated | 16 |
20080303871 | NOZZLE ASSEMBLY FOR AN INKJET PRINTER FOR EJECTING A LOW VOLUME 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 volume of said droplet is less than 3 pl. | 12-11-2008 |
20090135229 | ELEMENT SUBSTRATE, PRINTHEAD, AND HEAD CARTRIDGE - This invention provides an element substrate having a heater selection circuit normally operable even in the use of voltage conversion circuits, which are arranged along the nozzle arrayed direction, each having a small-area in order to reduce the area of the element substrate. The element substrate according to this invention includes a heater selection circuit, which receives a signal output from a voltage conversion circuit, a block selection signal, and a print data signal, and generates and outputs a signal for performing switching by a switching element. | 05-28-2009 |
20090153622 | INK EJECTION DEVICE INCLUDING A SILICON CHIP HAVING A HEATER STACK POSITIONED OVER A CORRESPONDING POWER TRANSISTOR - A silicon chip has a plurality of inkjetting structures. Each ink jetting structure of the plurality of ink jetting structures includes a heater stack having an electrical heater element. A power transistor is electrically connected to the electrical heater element. A planarization layer is interposed between the power transistor and the heater stack. The planarization layer has a planar base surface on which the heater stack is formed. | 06-18-2009 |
20090160908 | SEMICONDUCTOR ELEMENT CHIP, INK JET HEAD EMPLOYING SEMICONDUCTOR ELEMENT CHIP, AND METHOD FOR BONDING ELECTRODES OF SEMICONDUCTOR ELEMENT CHIP - A semiconductor element substrate includes an electrode pad; a semiconductor element; and a connection heater for heating the electrode pad, wherein the connection heater is disposed in a range capable of heating the electrode pad up to a level capable of electrical connection. | 06-25-2009 |
20090262167 | INKJET RECORDING HEAD SUBSTRATE AND DRIVE CONTROL METHOD, INKJET RECORDING HEAD, INKJET RECORDING HEAD CARTRIDGE AND INKJET RECORDING APPARATUS - An inkjet recording head substrate having an electrothermal transducer for generating thermal energy used to discharge ink and a drive element for driving the electrothermal transducer mounted thereon includes a first circuit portion for outputting selection signals for selecting the electrothermal transducer to be driven at a amplitude level of a second voltage higher than a first voltage based on an input signal of the amplitude level of the first voltage, a second circuit portion for inputting the selection signals from the first circuit portion and controlling the drive element corresponding to the electrothermal transducer to be driven based on the selection signals subject to the second voltage, and a plurality of signal lines for transmitting the selection signals between the first and second circuit portions. | 10-22-2009 |
20090267994 | LIQUID DISCHARGE HEAD, INK JET RECORDING HEAD AND INK JET RECORDING APPARATUS - The invention provides an ink jet recording head, in which, for improving heat-dissipating property and electrode terminal connectivity and reducing production cost, second electrode terminals provided on a supporting surface of plural laminated sheets for supporting a liquid discharge substrate and to be connected with first electrode terminals of the liquid discharge substrate are provided outside an ink supply aperture formed in an outermost sheet constituting the supporting surface, and are supported by the outermost sheet and at least a sheet laminated thereunder. | 10-29-2009 |
20090267995 | Inkjet Printhead Integrated Circuit Comprising A Multilayered Substrate - An inkjet printhead integrated circuit comprising a multilayered substrate having drive circuitry and a plurality of nozzle arrangements. Each nozzle arrangement comprises: a floor having an ink inlet defined therein; a roof spaced apart from the floor; sidewalls extending between the roof and the floor so as to define a nozzle chamber; and a heater element suspended in the chamber and connected to the drive circuitry. When actuation energy is supplied to the heater element from the drive circuitry, a vapour bubble is formed in ink contained in the nozzle chamber resulting in ejection of ink via the ink ejection port. | 10-29-2009 |
20100149275 | PRINTHEAD INTEGRATED CIRCUIT ASSEMBLY WITH COMPENSATION CONTROLLER - A printhead integrated circuit assembly includes a substrate having a plurality of micro-electromechanical nozzle arrangements formed thereon, each micro-electromechanical nozzle arrangement including a nozzle chamber defined by a crown portion, a skirt portion, and a wall portion; a lever arm included with the micro-electromechanical nozzle arrangement, the lever arm connected at one end to the crown and skirt portions, and at another end to an actuator, the lever arm adapted to move the crown and skirt portions with respect to the wall portion; drive circuitry for supplying a current to the actuator, the current for heating a portion of the actuator to bend the actuator through thermal expansion; containment walls extending from the substrate to surround each micro-electromechanical nozzle arrangement; and a nozzle guard mounted on the containment walls to individually enclose therein, together with the containment walls, each micro-electromechanical nozzle arrangement, the nozzle guard defining therethrough a plurality of apertures aligned with nozzle openings of respective micro-electromechanical nozzle arrangements | 06-17-2010 |
20100194823 | LIQUID EJECTION HEAD, INK CARTRIDGE, AND IMAGE FORMING APPARATUS - A liquid ejection head is disclosed that includes piezoelectric elements constituting driving element rows in which plural driving piezoelectric element columns that generate energy for ejecting liquid droplets from nozzles are arranged side by side; a wiring board arranged on the side opposite to a surface in which the nozzles are formed; and two sheets of flexible printed circuits that are provided to correspond to the piezoelectric elements and have output terminal parts connected to the plural driving piezoelectric element columns and input terminal parts connected to the wiring board, the input terminal parts being drawn to the side of the wiring board. The flexible printed circuits are arranged facing each other with their input terminal parts not facing each other, and the input terminal parts of the flexible printed circuits are folded in a direction where the flexible printed circuits face each other and are connected to the wiring board. | 08-05-2010 |
20110025784 | Flexible Circuit Seal - Various embodiments and methods relating to an adhesive paste layer ( | 02-03-2011 |
20120081472 | PRINTHEAD INTEGRATED CIRCUIT WITH END NOZZLES FIRING AT MULTIPLE DOT POSITIONS - A printhead integrated circuit includes one or more nozzle rows extending along a longitudinal axis thereof. The printhead IC has first and second ends for butting engagement with other printhead ICs so as to define a pagewidth printhead. Each nozzle has an associated primary dot position, wherein a first nozzle positioned at the first end is configured to fire some ink droplets skewed towards the first end in addition to firing some ink droplets at its own primary dot position. | 04-05-2012 |
20120081473 | PRINTHEAD INTEGRATED CIRCUIT WITH PRINTABLE ZONE LONGER THAN NOZZLE ROW - A printhead integrated circuit (IC) for a stationary pagewidth printhead, includes nozzle rows extending along a longitudinal axis thereof. A length of a printable zone corresponding to the nozzle row is longer than a length of the nozzle row. | 04-05-2012 |
20120081474 | PRINTHEAD INTEGRATED CIRCUIT HAVING COMMON CONDUCTIVE TRACK FUSED TO NOZZLE PLATE - An inkjet printhead integrated circuit (IC) includes: a substrate having a drive circuitry layer; a plurality of nozzle assemblies disposed on an upper surface of the substrate and arranged in one or more nozzle rows extending longitudinally along the printhead IC; a nozzle plate extending across the printhead IC; and a conductive track fused to the nozzle plate which extends longitudinally along the printhead IC and parallel with the nozzle rows. The conductive track is connected to a common reference plane in the drive circuitry layer via a plurality of conductor posts extending between the drive circuitry layer and the conductive track. | 04-05-2012 |
20120206542 | LIQUID EJECTION APPARATUS - A liquid ejection apparatus including: a head having: nozzles arranged in a nozzle-row direction; and ejection-energy applying portions; a drive IC for driving the ejection-energy applying portions; a control circuit board for controlling the drive IC; a wiring member on which the drive IC is mounted; and a support member for supporting the wiring member. The wiring member extends toward the control circuit board from a connection portion thereof connected to the ejection-energy applying portions, the wiring member having a first wiring portion extending in a first direction intersecting the nozzle-row direction and a second wiring portion extending in a second direction intersecting the first direction. The support member supports at least one of the first wiring portion and the second wiring portion, the at least one being located between the ejection-energy applying portions and the control circuit board. | 08-16-2012 |
20120242752 | INKJET PRINTHEAD - The present invention related to an inkjet printhead, adaptive for an ink cartridge including one ink-supplying tank, the inkjet printhead includes: a nozzle plate having a plurality of nozzles; and an inkjet chip for controlling ink jetting and having a total area region having a length and a width, the total area region including: a non-wiring region for installing one single ink-supplying flow channels; and a wiring region for installing an internal circuit including a plurality inkjet unit assembly, each inkjet unit of the inkjet unit assembly including a heater installed correspondingly to the nozzle; wherein an area of the wiring region of the inkjet chip is or less than 82% of a total area of the inkjet chip. | 09-27-2012 |
20140085384 | LIQUID DROPLET EJECTING HEAD AND PRINTING APPARATUS - A liquid droplet ejecting head includes: a base substrate that is formed as a plate-like body and that has a concave portion, which is formed to be open toward an upper surface of the plate-like body, and a wiring pattern which is provided inside the concave portion and formed of a conductive material; and an IC package that is fixed to airtightly seal the inside of the concave portion on the upper surface side and is electrically connected to the wiring pattern. | 03-27-2014 |