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| Number | Title | Issue Date |
| 8177336 | Method of driving piezoelectric actuator and method of driving liquid ejection head A method of driving a piezoelectric actuator has the step of driving a piezoelectric actuator including a diaphragm, a lower electrode formed on one surface of the diaphragm, a piezoelectric film formed in epitaxial growth or oriented growth on an opposite side of t... | 05/15/2012 |
| 8172374 | 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 ... | 05/08/2012 |
| 8162449 | Liquid ejecting head and liquid ejecting apparatus A liquid ejecting head includes pressure generation elements that apply pressure change to liquid retained in corresponding pressure generation chambers to discharge the liquid from corresponding nozzle openings. Each of the pressure generation elements is fixed to ... | 04/24/2012 |
| 8157359 | Liquid ejecting head and printer A liquid ejecting head includes a first pressure chamber, a second pressure chamber provided at a side of the first pressure chamber, a vibration plate provided above the first pressure chamber and the second pressure chamber, a driving piezoelectric element provide... | 04/17/2012 |
| 8152282 | Droplet discharge device and method of manufacturing droplet discharge device A droplet discharge device including a plurality of vibrators arranged on an upper surface of a substrate. The substrate has a cavity, discharge hole and supply hole, which serve as a liquid flow path, formed inside a plate including flat upper and lower surfaces. A... | 04/10/2012 |
| 8147040 | Moisture protection of fluid ejector A fluid ejection apparatus includes a substrate having a plurality of fluid passages for fluid flow and a plurality of nozzles fluidically connected to the fluid passages, a plurality of actuators positioned on top of the substrate to cause fluid in the plurality of... | 04/03/2012 |
| 8128208 | Liquid ejecting head, liquid ejecting apparatus, and actuator A liquid ejecting head includes a flow passage forming substrate that includes a plurality of pressure generating chambers juxtaposed to each other and each in communication with a nozzle for ejecting droplets, and piezoelectric elements disposed on the flow passage... | 03/06/2012 |
| 8123338 | Liquid droplet jet head, liquid droplet discharging apparatus, and image forming apparatus A liquid droplet jet head includes a pressure liquid chamber substrate including nozzles discharging liquid droplets and pressure liquid chambers communicated with the nozzles, a vibration board partially forming wall surfaces of the pressure liquid chambers, and a ... | 02/28/2012 |
| 8118413 | 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... | 02/21/2012 |
| 8118412 | Liquid ejecting head, liquid ejecting apparatus, and actuator A liquid ejecting head includes a flow passage forming substrate that includes a plurality of pressure generating chambers juxtaposed to each other and each in communication with a nozzle for ejecting droplets, and piezoelectric elements disposed on the flow passage... | 02/21/2012 |
| 8104876 | Liquid transporting apparatus and piezoelectric actuator A liquid transporting apparatus includes a piezoelectric actuator which applies a pressure to liquid in a pressure chamber and which has a vibration plate covering the pressure chamber; a piezoelectric layer formed on a surface, of the vibration plate, not facing th... | 01/31/2012 |
| 8100514 | Inkjet head actuator and manufacturing method of the same There are provided an inkjet head actuator and a manufacturing method of the same. The inkjet head actuator includes: a vibration plate having a recess formed in a top surface thereof; a first electrode formed to cover a bottom surface and a side wall of the recess;... | 01/24/2012 |
| 8052253 | Inkjet head having piezoelectric actuator for restrictor, and image forming method and apparatus having the same A piezoelectric inkjet head having piezoelectric actuators for restrictors includes a flow channel plate including an ink inlet through which ink enters, a plurality of pressure chambers into which ink to be ejected is filled, a manifold which is a path to receive i... | 11/08/2011 |
| 8042918 | Liquid discharging head and image forming apparatus including the liquid discharging head A liquid discharging head includes a piezoelectric actuator configured to displace a vibration plate to cause a nozzle to discharge a liquid drop from a liquid chamber. The piezoelectric actuator includes at least three piezoelectric elements aligned in a line. Each... | 10/25/2011 |
| 8042917 | Liquid dispenser head, liquid dispensing unit using same, image forming apparatus using same, and method of manufacturing liquid dispenser head A liquid dispenser head includes a plurality of nozzles, a plurality of liquid chambers, and a plurality of vibration members. The nozzle is used to discharge liquid. The liquid chamber communicates with the nozzle. The vibration member has a vibration portion, whic... | 10/25/2011 |
| 8042916 | Micromachined fluid ejector array This invention relates to a micromachined fluid ejector array having a fluid reservoir bounded at one side by an elastic membrane having scalable arrays of orifices arranged between concentric piezoelectric transducers, and at another side by a top cover supported b... | 10/25/2011 |
| 8042919 | Piezoelectric inkjet printhead A piezoelectric inkjet printhead includes a manifold, a chamber array including a plurality of chambers in connection with the manifold and arranged along at least one side of the manifold, a vibrating plate to cover the plurality of chambers, and a plurality of pie... | 10/25/2011 |
| 8038265 | Liquid-droplet jetting apparatus and liquid-droplet jetting method An ink-jet head includes a piezoelectric layer, pressure chambers, nozzles, first electrodes, and second electrodes. When electric potentials of the first and second electrodes respectively are changed at the same timing such that increase and decrease in the electr... | 10/18/2011 |
| 8020974 | Piezoelectric thin film device and piezoelectric thin film device manufacturing method, and inkjet head and inkjet recording apparatus One objective of the invention is to provide a highly-efficient and reliable piezoelectric thin film device by improving the piezoelectric function of a piezoelectric thin film and obtaining a crystal structure wherein the dependency of a piezoelectric constant, rel... | 09/20/2011 |
| 8016393 | Liquid transport apparatus and method for producing liquid transport apparatus A method for producing a liquid transport apparatus comprises positioning and joining a vibration plate formed with recesses and a flow passage unit formed with pressure chambers, detecting a positional deviation amount of the recess from a reference position in a p... | 09/13/2011 |
| 8011762 | Droplet discharging head and method of manufacturing the same, and droplet discharging device and method of manufacturing the same A droplet discharging head comprises: a cavity substrate including a discharge chamber having a bottom wall serving as a vibration plate; and an electrode substrate including an individual electrode that faces the vibration plate with a gap and drives the vibration ... | 09/06/2011 |
| 7997694 | Inkjet recording apparatus An inkjet recording apparatus includes: an ink holding chamber having a through hole to jet ink, and holding the ink; and a head unit jetting the ink held in the ink holding chamber from the through hole. The head unit includes an ultrasonic wave generation member, ... | 08/16/2011 |
| 7997696 | Liquid ejecting head, liquid ejecting apparatus, and actuator A liquid ejecting head includes a flow passage forming substrate that includes a plurality of pressure generating chambers juxtaposed to each other and each in communication with a nozzle for ejecting droplets, and piezoelectric elements disposed on the flow passage... | 08/16/2011 |
| 7997695 | Liquid ejecting head, liquid ejecting apparatus, and actuator A liquid ejecting head includes a flow passage forming substrate that includes a plurality of pressure generating chambers juxtaposed to each other and each in communication with a nozzle for ejecting droplets, and piezoelectric elements disposed on the flow passage... | 08/16/2011 |
| 7992970 | Droplet ejecting apparatus A droplet ejecting apparatus for discharging liquid from nozzles of pressure chambers by supplying liquid from a liquid tank to said pressure chambers and then contracting said pressure chambers by means of piezoelectric elements, comprising: ... | 08/09/2011 |
| 7980681 | Ink-jet head and manufacturing method thereof Disclosed are an ink-jet head and a manufacturing method thereof. The ink-jet head, which has a reservoir storing ink, a chamber being supplied with the ink from the reservoir, a restrictor connecting the reservoir to the chamber, and a nozzle discharging the ink, i... | 07/19/2011 |
| 7980680 | Method for manufacturing piezoelectric actuator, method for manufacturing liquid transporting apparatus, piezoelectric actuator, and liquid transporting apparatus A method for manufacturing piezoelectric actuator which includes a piezoelectric layer formed of a piezoelectric ceramics material and having a drive area, a first electrode and a second electrode arranged on both surfaces of the piezoelectric material layer respect... | 07/19/2011 |
| 7963639 | Liquid ejection device A liquid ejection device includes a liquid ejection member including a pressurized liquid chamber and a liquid ejection orifice which is in fluid communication with the pressurized liquid chamber to eject a liquid in the pressurized liquid chamber to the outside. A ... | 06/21/2011 |
| 7950782 | Droplet discharging head, energy converter, piezoelectric device, MEMS structure, cantilever actuator, piezoelectric sensor, and piezoelectric linear motor A droplet discharging head includes a substrate, a cavity section positioned on a first surface side of the substrate, a piezoelectric thin film positioned on a second surface side of the substrate and disposed in an area opposing the cavity section, a cover section... | 05/31/2011 |
| 7946689 | Diaphragm plate with partially-etched port A printhead has an aperture plate on a front side of the printhead, a diaphragm plate on a back side of the printhead, a body intermediate the aperture plate and the diaphragm plate, a chamber disposed within the body, a port boundary defining a port area, the port ... | 05/24/2011 |
| 7926918 | Method for driving head for liquid-droplet jetting apparatus, and head for liquid-droplet jetting apparatus A piezoelectric layer is provided on a vibration plate which covers a plurality of pressure chambers extending in a predetermined direction. The piezoelectric layer has a first area corresponding to a central portion in a width direction of each of the pressure cham... | 04/19/2011 |
| 7922301 | Liquid transport apparatus and method for producing liquid transport apparatus A piezoelectric actuator includes a vibration plate, a plurality of individual electrodes, wiring sections each extending from corresponding one of the individual electrodes and passing between the other individual electrodes other than the corresponding individual ... | 04/12/2011 |
| 7891783 | Liquid jet head and a liquid jet apparatus Provided is a liquid jet head including: a flow path forming substrate having formed therein a row of pressure generating chambers, each of which is communicated with a nozzle opening; a piezoelectric element which is provided in each of the pressure generating cham... | 02/22/2011 |
| 7874653 | Piezoelectric device, its manufacturing method, liquid ejection head, and printer A piezoelectric device includes a substrate composed of a (110) single crystal silicon, a driver IC formed in the substrate, and a piezoelectric device that is formed above the substrate and is driven by the driver IC, wherein the driver IC has an analog switch incl... | 01/25/2011 |
| 7874652 | Liquid transporting apparatus and ink-jet printer A liquid transporting apparatus includes a channel unit in which a plurality of pressure chambers are provided, and a piezoelectric actuator which changes individually a volume of each of the pressure chambers. The piezoelectric actuator includes a vibration plate, ... | 01/25/2011 |
| 7871153 | Liquid jet head, method of manufacturing liquid jet head, and image forming apparatus A disclosed liquid jet head includes a nozzle plate having plural nozzles for jetting liquid therefrom, plural flowpaths formed in communication with the plural nozzles, a vibration plate member having a flexible part that forms at least one of the walls of each flo... | 01/18/2011 |
| 7862160 | Hybrid manifold for an ink jet printhead A print head has an array of jets to dispense ink onto a printing surface, an array of actuators to cause the jets to dispense ink and an ink manifold to route ink to the array of jets, the ink manifold being formed of at least one polymer layers. A print manifold h... | 01/04/2011 |
| 7857433 | Inkjet printhead employing piezoelectric actuator and method of manufacturing the inkjet printhead A piezoelectric inkjet printhead includes a fluid path forming substrate having a pressure chamber, a piezoelectric actuator formed on the fluid path forming substrate to provide a drive force to the pressure chamber to eject ink, and a damping layer formed on the p... | 12/28/2010 |
| 7845770 | Liquid droplet ejecting head and image forming device A liquid droplet ejecting head including a plurality of pressure chambers; nozzles communicating respectively with the plurality of pressure chambers; a vibrating plate that forms portions of the plurality of pressure chambers; a piezoelectric body disposed above th... | 12/07/2010 |
| 7845769 | Ink jet printhead An ink jet printhead which includes a line of nozzles arranged with a uniform first pitch in a line direction X, a plurality of parallel ink channels having an axial direction normal to said line direction X and arranged in groups within which they have a uniform se... | 12/07/2010 |
