| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 347055000 | With electric field ejection (applied to fluid) | 32 |
| 20080225087 | APPARATUS AND METHOD FOR EJECTING DROPLETS USING CHARGE CONCENTRATION AND LIQUID BRIDGE BREAKUP - Disclosed is an apparatus and method for ejecting droplets using charge concentration and liquid bridge breakup. The droplet ejection apparatus includes a reservoir storing a liquid; a capillary nozzle having a lower end submerged in the liquid stored in the reservoir and an upper end exposed outside the surface of the liquid, the capillary nozzle transferring the liquid to the upper end using capillary force; a potentiostat for applying a voltage to the liquid; a substrate mount on which a substrate is disposed to face the upper end of the capillary nozzle; and a distance adjusting unit for reciprocatingly moving the substrate between first and second positions with respect to the capillary nozzle, wherein the first position denotes a position where a distance between the upper end of the capillary nozzle and the surface of the substrate is less than a effective distance. | 09-18-2008 |
| 20080239006 | DROPLET EJECTION HEAD, DROPLET EJECTION DEVICE, AND METHOD OF FORMING ELECTRODE SUBSTRATE - A droplet ejection head includes: a nozzle substrate provided with a plurality of nozzle holes for ejecting a droplet; a cavity substrate provided with a plurality of ejection cavities each having a diaphragm as a bottom wall functioning as an electrode; and an electrode substrate including: a plurality of individual electrodes each formed in a first groove, opposed to the diaphragm with a gap, and for driving the diaphragm; a driver IC for controlling driving of the plurality of individual electrodes; and input wiring formed in a second grooves, and for inputting one of power and a signal for driving the drover IC from the outside. The second grooves of the electrode substrate are formed deeper than the first grooves, and a thickness of a conductive material of the input wiring is greater than a thickness of the individual electrodes. | 10-02-2008 |
| 20080246816 | Coated Electrodes for a Drop-on-Demand Printer - A drop on demand printer is provided having: an ink ejection location for ejecting ink droplets, the ejection location having an associated ejection electrode for causing electrostatic ejection of the droplets from the ejection location; an intermediate electrode spaced from the ejection location, and in use disposed between the ejection location and a substrate onto which the droplets are printed in use; wherein either the ejection electrode or the intermediate electrode is coated with a film, the film being formed from a blend of a polymer insulating host and a conducting polymer dopant. | 10-09-2008 |
| 20080273061 | METHOD FOR MANUFACTURING PATTERN FORMED BODY - The main object of the present invention is to provide a method for manufacturing a pattern formed body by the electric field jet method, capable of stabilizing the discharge amount and the discharge direction of a liquid. The present invention achieves the object by providing a method for manufacturing a pattern formed body characterized in that a pattern is formed on a substrate by: discharging a liquid from a discharge orifice by applying a voltage between a first electrode, disposed in the vicinity of the discharge orifice of a nozzle of a discharge head, and a second electrode, disposed in between the discharge orifice and the substrate, having an opening for discharge; and adhering the liquid onto the substrate by passing through the opening for discharge of the second electrode. | 11-06-2008 |
| 20080284822 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes a liquid ejecting head, a platen, an absorption member, an electrode, and a potential difference generating device. The liquid ejecting head has a conductive nozzle plate that ejects liquid toward a front face of a recording object. The platen is arranged at a position opposed to the nozzle plate with the recording object placed between the platen and the nozzle plate. The absorption member is arranged at a position opposed to the nozzle plate and located farther from openings of the nozzle plate than the recording object in a direction in which the liquid is ejected. The potential difference generating device generates a difference in potential between the nozzle plate and the electrode by applying voltage to the electrode so as to form an electric field, whereby liquid ejected from the liquid ejecting head is electrically attracted toward the electrode. | 11-20-2008 |
| 20080284823 | INKJET PRINTING APPARATUS - To achieve high-quality printing by controlling an ink-travelling direction by an electrostatic force so that the ink can be accurately applied on a printing medium, the ink is landed on a desired position of the printing medium effectively without disturbing the ink ejection, independent of a difference in the thickness of the printing medium. An electric field between a printing head and the printing medium is generated by applying a voltage to a platen of conductive material positioned immediately below the printing medium. At this point, the voltage applied to the platen is adjusted so that the electric field of a preferable intensity can be generated on a face of the printing head where ejection openings are formed irrespective of the thickness of the printing medium. | 11-20-2008 |
| 20090002454 | INK-JET HEAD AND PRINTER USING THE SAME - A printer ( | 01-01-2009 |
| 20090015638 | INKJET PRINTING APPARATUS AND PRINTING METHOD - To achieve high-quality printing by controlling an ink-traveling direction by an electrostatic force so that the ink can be accurately applied on a printing medium, the ink ejected to areas outside edges of the printing medium is prevented from being attracted to the end portions in margin-less printing. This configuration includes: a platen, made of a conductive material, positioned immediately below the printing medium; an absorber positioned at a side of the edge; and a mesh conductive member disposed on the absorber. A first voltage is applied to the platen, causing polarization in the printing medium, and a second voltage higher than the first voltage is applied to the conductive member. Thereby, ink ejected outside the edges in the margin-less printing, travels straight-forwardly toward the conductive member without being attracted to the end portions, and is absorbed into the absorber via the conductive member. | 01-15-2009 |
| 20090051735 | LIQUID DROPLET FLIGHT DEVICE AND IMAGE FORMING APPARATUS - A liquid droplet flight device is provided that moves an ink or the like using a comparatively low voltage and stably causes flight of even a high viscosity ink or the like. When causing droplets of a liquid inside a liquid retaining section to fly onto a medium transported between liquid droplet discharge means and an opposing electrode in the liquid droplet flight device, a high voltage is applied to the flight electrode from a bias power source to generate an electric field between the flight electrode and the opposing electrode. On/off control of flight control means is performed in this state to apply a drive voltage of a low voltage to an EW drive electrode from a drive power source such that the liquid inside a slit moves to a leading end portion of the flight electrode due to an electrowetting phenomenon, and the liquid that has moved to the leading end portion of the flight electrode flies toward the opposing electrode through the electric field such that a liquid droplet lands on the medium. | 02-26-2009 |
| 20090051736 | Liquid droplet transport apparatus - A liquid droplet transport apparatus, which is provided on a nozzle plate of an ink-jet head, comprises a first electrode and a second electrode which are arranged on a lower surface of the nozzle plate, a driver which applies electric potentials to the first electrode and the second electrode respectively, a resistor layer which is arranged on the lower surface of the nozzle plate and which makes electric conduction to both of the first electrode and the second electrode, and an insulating layer which covers the first electrode, the second electrode, and the resistor layer. Accordingly, the liquid droplet transport apparatus is provided, which makes it possible to transport liquid droplets over a long distance, while simplifying the arrangement for the liquid droplet transport. | 02-26-2009 |
| 20090079794 | LIQUID EJECTING APPARATUS - In a liquid ejecting apparatus using the electrostatic attraction method or electric field assist method, a liquid ejecting apparatus where discharging of a nozzle plate is securely performed and appropriate liquid ejecting is possible is provide. The liquid ejecting apparatus is provided with an electrode; a liquid ejecting head, having, a nozzle plate including a nozzle opposed to the counter electrode to eject liquid, a pressure generating device to rise a meniscus of liquid at a ejecting port of the nozzle, and a charging electrode opposed to the counter electrode via the nozzle plate, an electrostatic voltage applying device to apply electrostatic voltage onto the liquid in the nozzle; a discharging device to discharge the charged nozzle plate; and a control device to control the electrostatic voltage applying device and the discharging device; wherein the discharging device provides a conductive discharging member detachable to an whole area of the nozzle plate opposed to the counter electrode. | 03-26-2009 |
| 20090096837 | Liquid Ejection Head, Liquid Ejection Apparatus Liquid Ejection Method - A liquid ejection head, having: an insulating nozzle plate provided with a nozzle having, a liquid supply port to supply liquid and an ejection port to eject the liquid supplied from the liquid supply port onto a substrate; a cavity communicating with the liquid supply port to reserve the liquid to be ejected from the ejection port; an electrostatic voltage applying device to generate an electrostatic attraction force by applying an electrostatic voltage between the liquid in the nozzle and the cavity, and the substrate; and a control device to control the electrostatic voltage applying device for conducting polarization relaxation operation by applying an electrostatic voltage having reverse polarity opposite to that of the electrostatic voltage applied in liquid ejection, wherein the nozzle is a flat nozzle and the control device. | 04-16-2009 |
| 20090135228 | INKJET PRINTHEAD AND METHOD OF EJECTING INK USING THE SAME - An inkjet printhead including a passage plate in which a manifold to supply ink and a nozzle to eject ink are formed; a first electrode and a second electrode formed on the passage plate around the nozzle to generate an ion wind by ionizing air between the first and second electrodes by a voltage that is applied between the first and second electrodes, and a third electrode and a fourth electrode to generate an electrostatic force by a voltage applied between the third and fourth electrodes, wherein the third electrode is separated from the passage plate and the fourth electrode is formed on the passage plate. | 05-28-2009 |
| 20090141085 | LIQUID DISCHARGE HEAD AND ITS MANUFACTURING METHOD - A liquid discharge head comprises an element substrate made of Si having a discharge port for discharging a liquid, an energy generating element for generating an energy for allowing the liquid to be discharged from the discharge port, and a supply port for supplying the liquid to the discharge port and a liquid containing member made of a resin having a communication port communicated with the supply port, in which the element substrate and the liquid containing member are adhered with an adhesive agent. An inorganic film obtained by hardening compositions containing a silica precursor is formed on at least a surface corresponding to a portion of the liquid containing member to which the element substrate is adhered. | 06-04-2009 |
| 20090189956 | DROPLET JETTING APPARATUS USING ELECTROSTATIC FORCE AND MANUFACTURING METHOD AND INK PROVIDING METHOD THEREOF - The present invention relates to a droplet jetting apparatus using electrostatic force, a manufacturing method thereof and an ink providing method thereof. The droplet jetting apparatus using electrostatic force includes a lower electrode unit in which a nozzle and a lower electrode positioned in the nozzle equipped in the upper part of a first substrate, and an ink inflow channel equipped in the lower part of the first substrate are integrally formed; an upper electrode unit having an upper electrode formed on the top surface of a second substrate and an ink discharge hole formed by being penetrated to the upper electrode from the bottom surface of the second substrate; and a bonding layer for bonding the lower electrode unit and the upper electrode unit with each other so that the nozzle is vertically aligned with the ink discharge hole. According to this configuration, the ink used in the droplet jetting apparatus is easy to select, the electrostatic force can be efficiently concentrated and manufacturing processes of the droplet jetting apparatus can be simplified. | 07-30-2009 |
| 20090262165 | SUPPLY SYSTEM AND INJECTION-HEAD STRUCTURE THEREOF - A supply system capable of providing a working fluid is provided. The supply system includes an access device, a first energizer, a second energizer, a third energizer and an output device. The access device utilized to access the working fluid includes a connecting port. The first energizer provides a first energy to energize the working fluid, thereby expelling the bubbles from the working fluid. The second energizer provides a second energy to energize the working fluid received in the access device, thereby expelling the working fluid through the connecting port of the access device. The output device is connected to the access device, thereby receiving and outputting the working fluid. The third energizer provides a third energy to heat the working fluid passing through the access device and the output device. | 10-22-2009 |
| 20090303291 | FLUID EJECTION DEVICE FOR INK JET HEADS - A fluid ejection device that can be used for inkjet heads is described. A large actuator with a small stroke in combination with hydraulic pressure transfer by means of essentially relatively incompressible fluid is used in order to generate a large stroke of a small membrane. Further the ink is ejected during the actuation phase of the actuator enabling a better control of the droplet dynamics. | 12-10-2009 |
| 20090309931 | PRINTING HEAD AND MANUFACTURING METHOD OF PRINTING HEAD - There is provided a printing head which improves durability and increases reliability by reducing stress occurring in a bonding part between an electrode pad and an inner lead at cooling. The electrode pad and the inner lead are electrically connected in such a manner that in the bonding portions between the electrode pad and a stud bump, only a part of contacting portions between the electrode and the stud bump is bonded. | 12-17-2009 |
| 20090322828 | DEVICE FOR PRINTING DROPLET OR INK ON SUBSTRATE OR PAPER - A device for printing a droplet onto a substrate includes: a droplet generating member which is needle-shaped and comprises a receiving portion disposed vertically to receive a solution, and a discharge hole connected to the receiving portion and formed on a bottom of the receiving portion so that the solution can be discharged from the receiving portion; a substrate disposed below the droplet generating member, the substrate includes a target portion to which the droplet discharged from the discharge hole of the droplet generating member is dropped and attached; a voltage applier applying a voltage to the droplet so that the droplet can be dropped onto the target portion of the substrate; a volume measuring unit measuring the volume of the droplet; and a droplet control unit maintaining the volume of the droplet at a predetermined level based on the measured volume of the droplet. | 12-31-2009 |
| 20100214364 | IMAGE FORMING APPARATUS WITH DEVELOPER PASSAGE AMOUNT CONTROL ELECTRODES - An image forming apparatus comprises a toner-bearing member that bears toner and makes the toner clouded thereon. A toner passage control device including plural widthwise lines of toner passage holes in a printing medium conveyance direction is provided. Each of the toner passage holes includes a control electrode that controls passage of the toner through each of the toner passage holes toward a printing medium. a control pulse proving device provides a control pulse to the control electrode to operate. The control pulse applied to the control electrode of the one of the plural lines is different from that applied to the control electrode of the other one of the plural lines. | 08-26-2010 |
| 20110080452 | Inkjet Printing of Nanoparticulate Functional Inks - Apparatus for depositing ink on a substrate includes a nozzle defining an outlet for the ink, with at least a portion of the nozzle being electrically conductive. A first voltage source applies a first potential to the outlet nozzle. One or more auxiliary electrodes are located adjacent the outlet nozzle, and a second voltage source applies a second potential to the auxiliary electrodes. The apparatus includes a piezo-electric or thermal actuator for expelling ink from the nozzle towards a target zone on a substrate, the ink comprising a liquid vehicle and pigment particles dispersed in the vehicle. At least the pigment particles are electrically charged, typically due to the applied potentials. In one embodiment, an auxiliary electrode is disposed coaxially around the electrode formed by the nozzle. In another embodiment, an auxiliary electrode located beyond the nozzle, on a common axis with the electrode formed by the nozzle. The configuration of the nozzle, the auxiliary electrodes, and the values of the first and second potentials are selected to cause pigment particles to be concentrated in the target zone, so that a quantity of the pigment particles is deposited in the target zone having a higher concentration than the concentration of the pigment particles in the ink. The invention extends to a method of depositing ink on a substrate. | 04-07-2011 |
| 20110102513 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus, including an electric potential control unit capable of switching between an identical electric potential state which sets a predetermined region of the liquid ejection unit side and a predetermined region of the ejecting medium support unit side to the identical electric potential and an electric potential difference generating state which generates the electric potential difference between both of them, wherein the liquid ejecting apparatus includes a configuration in which, when the ejecting medium passes through a liquid ejecting area to which the liquid is ejected by the liquid ejection unit, the electric potential control unit forms the identical electric potential state, and when the ejecting medium does not pass through the liquid ejecting area, the electric potential control unit forms the electric potential difference generating state for at least a proper period. | 05-05-2011 |
| 20110122200 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes a liquid ejection unit that ejects a liquid onto an ejection target medium, a conductive brush provided adjacent to the liquid ejection unit and whose tip opposes the ejection target medium, and a same potential formation unit that sets the conductive brush and a predetermined portion of the liquid ejection unit to the same potential. | 05-26-2011 |
| 20110187798 | High Resolution Electrohydrodynamic Jet Printing for Manufacturing Systems - Provided are high-resolution electrohydrodynamic inkjet (e-jet) printing systems and related methods for printing functional materials on a substrate surface. In an embodiment, a nozzle with an ejection orifice that dispenses a printing fluid faces a surface that is to be printed. The nozzle is electrically connected to a voltage source that applies an electric charge to the fluid in the nozzle to controllably deposit the printing fluid on the surface. In an aspect, a nozzle that dispenses printing fluid has a small ejection orifice, such as an orifice with an area less than 700 μm | 08-04-2011 |
| 20110211021 | LIQUID DISCHARGE HEAD AND IMAGE FORMING APPARATUS - A disclosed liquid discharge head includes plural nozzles configured to discharge droplets; plural chambers in communication with the respective nozzles; a vibration plate member having a deformable vibration area configured to form a part of a wall surface of the chambers, a first projection in the deformable vibration area, and a second projection in a part corresponding to a partition wall between the chambers; and a piezoelectric member having a drive pillar bonded to the first projection and a non-drive pillar bonded to the second projection. A width of a base of the first projection is greater than a width of a base of the second projection, and a width of the drive pillar is less than a width of the non-drive pillar. | 09-01-2011 |
| 20110211022 | LIQUID DISCHARGING APPARATUS AND CONTROL METHOD OF LIQUID DISCHARGING APPARATUS - A contraction portion of a vibration pulse includes a first contraction element which occurs subsequent to an expansion portion, a contraction maintaining element which follows the first contraction element, and a second contraction element which follows the contraction maintaining element, and when a time from a start point time of the expansion portion to an end point time of the expansion portion is set as t | 09-01-2011 |
| 20140118444 | Apparatus for Jetting Droplet and Apparatus for Jetting Droplet Using Nanotip - The present invention provides a droplet jetting apparatus which jets fluid in a droplet shape. The apparatus includes a main body ( | 05-01-2014 |
| 20140253638 | Device for Discharging Ink Using Electrostatic Force - Provided herein is a device for discharging ink using electrostatic force, the device including a nozzle portion for discharging ink through an electric field to a substrate; an electrode portion for creating an electric field between the nozzle and the substrate; and a gas discharge portion for discharging guide gas from outside of the nozzle portion to control a cross-section area of ink being discharged from the nozzle portion. | 09-11-2014 |
| 20140267501 | Active Biased Electrodes for Reducing Electrostatic Fields Underneath Print Heads in an Electrostatic Media Transport - Embodiments described herein are directed to a system for reducing electrostatic fields underneath print heads in a direct marking printing system. The system includes: one or more print heads for depositing ink onto a media substrate; a media transport for moving the media substrate along a media path past the one or more print heads; a conductive platen contacting the media transport belt; an electrostatic field reducer that includes an alternating current charge device positioned upstream of the one or more print heads; and one or electrically isolated biased electrodes in registration with the ink deposition areas of the one or more print heads. The media transport includes a media transport belt and, when the media is on the transport belt it has an electrostatic field, which can cause printing defects. The electrostatic field reducer and electrodes reduce the electrostatic field on the surface of the media and thereby reduce printing defects. | 09-18-2014 |
| 20150062250 | Apparatus for Spraying and Patterning Using Electrostatic Force - There is disclosed an apparatus for spraying and patterning, using an electrostatic force, includes a nozzle to which a voltage is applied to exhaust ink, a droplet circulation chamber provided in one end of the nozzle, with a hole provided in one end to spray the ink exhausted from the nozzle based on a particle size of the droplet and to temporarily collect the not-sprayed ink, and a substrate for impacting the ink sprayed from the hole thereon by forming an electric field between the nozzle and the substrate. | 03-05-2015 |
| 20150290938 | HIGH RESOLUTION ELECTROHYDRODYNAMIC JET PRINTING FOR MANUFACTURING SYSTEMS - Provided are high-resolution electrohydrodynamic inkjet (e-jet) printing systems and related methods for printing functional materials on a substrate surface. In an embodiment, a nozzle with an ejection orifice that dispenses a printing fluid faces a surface that is to be printed. The nozzle is electrically connected to a voltage source that applies an electric charge to the fluid in the nozzle to controllably deposit the printing fluid on the surface. In an aspect, a nozzle that dispenses printing fluid has a small ejection orifice, such as an orifice with an area less than 700 μm | 10-15-2015 |
| 20160046124 | Ink Jet Recording Device - Under a condition in which bowed printing occurs, a horizontal shift is suppressed to improve print quality. Following a program stored in a ROM | 02-18-2016 |
