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Layers, plates

Subclass of:

347 - Incremental printing of symbolic information

347001000 - INK JET

347020000 - Ejector mechanism (i.e., print head)

347054000 - Drop-on-demand

347068000 - With piezoelectric force ejection

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
347072000 Plural piezoelectric laminate 16
Entries
DocumentTitleDate
20090027458HOT MELT INK DELIVERY RESERVOIR PUMP SUBASSEMBLY - A print head pump assembly has a piezo element plate having an array of piezoelectric elements, a channel plate having an array of channel regions corresponding to the array of piezoelectric elements, and a valve plate having an array of reed valve pairs corresponding to the array of channel regions. A print head assembly has at least one ink reservoir, an upper routing plate to receive ink from the ink reservoir, a lower routing plate to direct ink out of the print head, and a pump assembly to draw ink from the upper routing plate and deliver ink to the lower routing plate using piezoelectric diaphragms. A method of delivering ink to a print substrate includes providing ink to a low-pressure reservoir of a print head, drawing ink out of the low-pressure reservoir through an upper routing plate using a pump assembly internal to the print head, and pumping ink out of the print head through a lower routing plate using the pump assembly, such that the drawing and pumping processes continuously alternate.01-29-2009
20120200642Inkjet Printers - An inkjet printhead having at least one internal electrode in contact with ink in use, wherein region(s) of the electrode surface are covered by an electrically insulating organic material that has been deposited thereon by electrophoresis.08-09-2012
20100079557LIQUID EJECTING HEAD, MANUFACTURING METHOD OF THE SAME, AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes: a passage forming board which is provided with pressure generating chambers respectively communicating with nozzle openings for ejecting a liquid; piezoelectric elements which are provided on one surface of the passage forming board to cause a pressure variation in the pressure generating chambers; terminals which are provided on the one surface of the passage forming board to be conductively connected to the piezoelectric elements and each have an inclined connection surface on a surface opposite to the passage forming board; and a wiring board which is electrically connected to the connection surfaces of the terminals and has a wiring layer supplying a driving signal for driving the piezoelectric elements. Each of the connection surfaces is higher on a side of the piezoelectric elements than on an opposite side of the piezoelectric elements with respect to a predetermined reference surface.04-01-2010
20110193916ACTUATOR, LIQUID DROPLET EJECTING HEAD, AND MANUFACTURING METHOD THEREOF, AND LIQUID DROPLET EJECTING APPARATUS - An actuator that includes a substrate; first conductive layers provided so as to extend in a first direction and to be disposed adjacent to each other on the substrate; a piezoelectric body layer having a first portion formed so as to cover the first conductive layers and openings between the first conductive layers, a second portion other than the first portions, and a contact to the first conductive layer; a second conductive layer having a third portion which overlap with the first conductive layers in the second direction, a fourth portion connected to the third portion being formed over the second portion of the piezoelectric body layer, and a fifth portion connected to the first conductive layer in the contact ; and a wiring having a sixth portion which is formed over the fourth portion of the second conductive layer and a seventh portion connected to the fifth portion.08-11-2011
20110193915Piezoelectric actuator, inkjet head including the same, and method of manufacturing piezoelectric actuator - A piezoelectric actuator according to an aspect of the invention may include: upper and lower electrodes supplying a driving voltage; and a piezoelectric material formed by solidifying a piezoelectric liquid having viscosity between the upper and lower electrodes and providing a driving force to ink inside an ink chamber of an inkjet head.08-11-2011
20090122119Jet stack with precision port holes for ink jet printer and associated method - A print head for a printer includes a jet stack for passage of ink to media to form an image on the media. The jet stack includes a substrate having a micro actuator. The substrate has an opening through the substrate that is proximate to the micro actuator and a diaphragm bonded to the substrate. The diaphragm has an opening through the diaphragm that is configured for fluid communication with the opening through the substrate. The diaphragm opening has a width that is larger than a width of the opening in the substrate05-14-2009
20130076839HIGH DENSITY ELECTRICAL INTERCONNECT USING LIMITED DENSITY FLEX CIRCUITS - A method and structure for an ink jet print head which includes the use of two or more flexible circuits and a piezoelectric element array. A first pad array is included on a first flex circuit to power a first portion of the piezoelectric element array of the print head, and a second pad array is included on a second flex circuit to power a second portion of the piezoelectric element array of the print head. Using two flex circuits requires only half as many traces to be formed on each flex circuit, which can relax spacing requirements and design tolerances.03-28-2013
20090051738MEMBRANE STIFFENER FOR ELECTROSTATIC INKJET ACTUATOR - An apparatus has an electrode plate having an array of electrodes, a flexible membrane separated from the electrode plate by a gap, the membrane having localized regions corresponding to electrodes in the array of electrodes, and each localized region having a stiffener. A print head has an ink reservoir, a nozzle plate to deliver ink from the reservoir to a print substrate, an ink inlet on an opposite side from the print substrate to provide ink from the reservoir to the nozzle plate, and a flexible membrane arranged so as to draw the ink through the ink inlet when actuated and to dispense the ink through the nozzle plate when released, the flexible membrane having a stiffener. A method of manufacturing a membrane device includes providing an electrode plate having an array of electrodes, forming an air gap adjacent the electrode plate, and forming a membrane of conductive material having localized regions with a stiffener, the localized regions corresponding to electrodes in the array.02-26-2009
20100073435LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS AND ACTUATOR DEVICE - A liquid ejecting head including a fluid channel forming substrate including a pressure generating chamber communicating with a nozzle opening that ejects a liquid droplet and a piezoelectric element. The piezoelectric element has a first electrode, a piezoelectric material layer that is provided on the first electrode and has a perovskite monoclinic structure, and a second electrode formed on the piezoelectric material layer opposite to the first electrode. An angle formed between a direction of an electric field generated between the first and second electrodes and an orientation of a polarization moment of the piezoelectric material layer is greater than an angle formed between the direction of the electric field at a time when the piezoelectric constant of the piezoelectric material layer reaches a maximum level and the orientation of the polarization moment.03-25-2010
20100073434RECORDING HEAD AND MANUFACTURING METHOD THEREOF - A flat flexible substrate of a recording head has: a base having a surface facing an actuator unit, a plurality of lands placed on the surface and bonded to respective individual bumps, a plurality of wirings placed on the surface and connected to the respective lands, an insulating land cover layer covering parts of the respective lands other than the bonded points with the respective individual bumps, and an insulating wiring cover layer covering the wirings. The wiring cover layer and the land cover layer are placed on each other to form a layered part so that the wiring cover layer is sandwiched between the land cover layer and the wirings, and a piezoelectric layer and the wirings sandwich therebetween at least a part of the layered part. In the layered part, the land cover layer is fixed to the piezoelectric layer.03-25-2010
20100033541Method For Reducing Mechanical Cross-Talk Between Array Structures On A Substrate Mounted to Another Substrate By An Adhesive - A method binds a substrate having an array of actuators to a diaphragm array in a way that reduces secondary banding in an ink jet printhead that ejects a different color ink from each row of ink jets in the printhead. The method includes cutting a plurality of horizontal channels in a substrate on which a plurality of actuators have been formed, the horizontal channels being cut between rows of actuators on the substrate, and cutting a plurality of vertical channels in the substrate on which the plurality of actuators have been formed, the vertical channels being cut between columns of actuators on the substrate, the vertical channels having a width that is less than a width of the horizontal channels.02-11-2010
20130038666INK JET HEAD, METHOD OF FORMING IMAGE BY THE INK JET HEAD, ANGULAR VELOCITY SENSOR, METHOD OF MEASURING ANGULAR VELOCITY BY THE ANGULAR VELOCITY SENSOR, PIEZOELECTRIC GENERATING ELEMENT, AND METHOD OF GENERATING ELECTRIC POWER USING THE PEIZOELECTRIC GENERATING ELEMENT - The purpose of the present invention is to provide an ink jet head capable of ejecting an exact amount of ink, an angular velocity sensor capable of measuring an exact angular velocity, and a piezoelectric generating element capable of generating an electric power due to positive piezoelectric effect, even when the applied electric field of 40 kV/cm or more is applied.02-14-2013
20130027477PIEZOELECTRIC INKJET PRINTHEADS AND METHODS FOR MONOLITHICALLY FORMING THE SAME - A piezoelectric inkjet printhead is monolithically fabricated on a substrate. The printhead includes a plurality of cavities formed into the substrate, piezoelectric actuators disposed over the top of the cavities, a fluidic structure and an ink supply channel. The piezoelectric actuators are formed over the cavities using a sacrificial material which fills the cavities and is removed after the actuators are formed. The fluidic structure defines pressurizing chambers and channels connected to the ink supply channel. The fluidic structure has a plurality of nozzle holes formed on the top surface. The cavities are connected to either a venting channel formed from the backside of the substrate or a venting chamber formed inside the fluidic structures.01-31-2013
20120182361PIEZOELECTRIC ELEMENT, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - A piezoelectric element comprises a piezoelectric layer consisting a complex oxide having a perovskite structure containing bismuth and iron and electrodes provided to the piezoelectric layer. The complex oxide further contains a first dopant element that is at least one of magnesium and zinc and a second dopant element that is cerium.07-19-2012
20130050354INKJET HEAD AND RECORDING DEVICE - Disclosed is an inkjet head including a fluid channel substrate on which individual liquid chambers are arranged, the individual liquid chambers being partitioned by liquid chamber partition walls; an oscillation plate that is formed on a surface facing openings of nozzles; actuators; wiring layer patterns that supplies driving signals to the actuators, the wiring layer patterns being formed above the corresponding liquid chamber partition walls; and a supporting substrate in which concave oscillation chambers are formed, the concave oscillation chambers being partitioned by supporting substrate partition walls. A width in the short direction of the supporting substrate partition wall is smaller than a width in the short direction of the liquid chamber partition wall and greater than a width of the wiring layer pattern.02-28-2013
20130088549LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A liquid ejecting head includes a piezoelectric element having a first electrode, a piezoelectric body layer, and a second electrode, in which the piezoelectric body layer is formed of complex oxide of a pevroskite structure including at least bismuth, barium, iron, and titanium, and the mole ratio of titanium to barium (Ti/Ba) is 1.17 or more, and 1.45 or less.04-11-2013
20110057995Inkjet head and inkjet head assembly having the same - There is provided an inkjet head and an inkjet head assembly having the same. The inkjet head includes an inkjet head plate having a plurality of nozzles ejecting ink provided therein; pressure chambers storing ink drawn in from both outer ends of the inkjet head plate in a width direction thereof and facing each other in a direction inwards of the width direction; piezoelectric elements supplying the pressure champers with driving force allowing ink to be ejected through the nozzles connected to the pressure chambers and disposed on the pressure chambers having membranes interposed therebetween; a pressure adjusting channel connecting the pressure chambers to adjust a pressure of ink ejected through the nozzles.03-10-2011
20090284570PRINTER HEAD AND PRINTING METHOD HAVING THE SAME - In an apparatus and a method for the printing of spacers in a pattern on substrates of display panels, a printer head includes a plurality of nozzle holes. Each printer head includes a nozzle group having a plurality of nozzle holes. A nozzle group may be selected by the conduction wirings on the vibration membrane and top plate sandwiching the piezoelectric actuators. To print complex patterns on the substrate a plurality of printer head sets, a plurality of printer heads in a line, can be arranged in various configurations.11-19-2009
20110012963LIQUID-EJECTING HEAD, LIQUID-EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A liquid-ejecting head includes a pressure-generating chamber that communicates with a nozzle opening and a piezoelectric element. The piezoelectric element includes a first electrode; a piezoelectric body layer formed on the first electrode; and a second electrode formed on the piezoelectric body layer on a side opposite the first electrode. In the liquid-ejecting head, the piezoelectric body layer has a perovskite structure and an insulating property, and an A-site and an oxygen site of the perovskite structure respectively include a vacancy formed by losing an A-site metal and a vacancy formed by losing an oxygen atom, each of the vacancies including a hydrogen atom.01-20-2011
20130063530ELECTROMECHANICAL TRANSDUCER - An electromechanical transducer (03-14-2013
20130063529PRINTING SYSTEM, PRINTING APPARATUSES, AND METHODS OF FORMING NOZZLES OF PRINTING APPARATUSES - A printing apparatus includes: a flow channel plate including, a pressure chamber, a nozzle including an outlet through which ink contained in the pressure chamber is ejected, and a trench disposed around the nozzle, and the outlet extending into the trench; a piezoelectric actuator configured to provide a change in pressure to eject the ink contained in the pressure chamber; and an electrostatic actuator configured to provide an electrostatic driving force to the ink contained in the nozzle.03-14-2013
20130162727SUBSTRATE, LIQUID EJECTION HEAD HAVING SUCH SUBSTRATE AND METHOD OF MANUFACTURING SUCH SUBSTRATE - A substrate includes a substrate body having a semiconductor element formed thereon and at least either a recess or a protrusion formed on the surface thereof and a printed circuit formed on the substrate body and connected to the semiconductor element. At least a part of the printed circuit is formed in a region of the surface of the substrate including either the inner side surfaces of the recess or the outer side surfaces of the protrusion.06-27-2013
20090009565PIEZOELECTRIC INKJET HEAD - A piezoelectric inkjet head includes a plurality of pressure chambers filled with ink that is to be ejected, a manifold to supply ink to the pressure chambers and extending in both sides of each of the pressure chambers parallel to a direction in which the pressure chambers are arranged, a restrictor to connect the manifold to each of the pressure chambers, and to be connected to both ends of each of the pressure chambers in a longitudinal direction, a plurality of piezoelectric actuators respectively corresponding to the pressure chambers, and at least one nozzle respectively connected to each of the pressure chambers, and to be symmetrically arranged with respect to the centerline in a longitudinal direction of each of the pressure chamber. The at least one nozzle includes a first nozzle and at least two second nozzles, the first nozzle is disposed to correspond to the centerline in the longitudinal direction of each of the pressure chambers, and the second nozzles are disposed in both sides of the first nozzle.01-08-2009
20120113194Liquid Discharge Head and Recording Device Using Same - The present invention provides a liquid discharge head less susceptible to crosstalk between displacement elements adjacent to each other, and a recording device using the liquid discharge head. The liquid discharge head includes a plate-shaped passage member providing a plurality of liquid pressurizing chambers of identical shape which open into a main surface and are arranged in a matrix shape, a plurality of liquid discharge holes, and a plurality of individual supply paths; and a plate-shaped piezoelectric actuator having a common electrode, a piezoelectric layer, and a plurality of individual electrodes laminated on a diaphragm. The plate-shaped passage member and the plate-shaped piezoelectric actuator are laminated one upon another so that the diaphragm and the piezoelectric layer cover the plurality of liquid pressurizing chambers. In a plan view of the liquid discharge head, an opening of each of the liquid pressurizing chambers is a polygonal shape having at least one acute angle shaped corner. A connection electrode led out to outside the liquid pressurizing chamber in the liquid pressurizing chamber and the individual electrode is disposed in a parallelogram shaped region including two sides holding therebetween an acute angle shaped corner of the liquid pressurizing chamber, and two corners adjacent to the corner.05-10-2012
20120236085LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes: a nozzle plate provided with nozzle openings; an actuator unit including a flow channel formation substrate in which pressure generation chambers are provided and piezoelectric actuators that cause a change in the pressure of the liquid within respective pressure generation chambers; a communication substrate in which communication channels that communicate between the pressure generation chambers and corresponding nozzle openings are provided; a first case member that is a frame member affixed to the communication substrate so that the actuator unit is disposed within the first case member and that, along with the actuator unit, forms a manifold that holds the liquid to be supplied to the pressure generation chambers; and a second case member that is affixed to the first case member and in which is formed an introduction channel that sends the liquid from the exterior to the manifold.09-20-2012
20120236084PIEZOELECTRIC ACTUATOR, METHOD OF PRODUCING PIEZOELECTRIC ACTUATOR, AND LIQUID DISCHARGE HEAD - Disclosed is a method of producing a piezoelectric actuator including a first electrode film forming process; a monomolecular film forming process; a pattering process of removing a monomolecular film having a rectangular shape; an application process of applying a precursor solution to the first electrode film exposed in the rectangular shape; a piezoelectric film forming process of converting the applied precursor solution into a piezoelectric film; and a second electrode film forming process. Materials of the precursor solution, the first electrode film, and the monomolecular film are adjusted so that the first electrode film is lyophilic and the monomolecular film is lyophobic to the precursor solution. The piezoelectric film forming process includes a drying and thermally decomposing process of drying and thermally decomposing the precursor solution; and a crystallizing process of crystallizing a thermally decomposed piezoelectric material.09-20-2012
20110128328Piezoelectric Actuator, Liquid Discharge Head, and Method of Manufacturing Same - A piezoelectric actuator may include a piezoelectric layer. The piezoelectric actuator may also include an electrode layer which is disposed on a surface of the piezoelectric layer. The piezoelectric actuator may further include a metal terminal which is disposed on the electrode layer, and configured as a contact point with respect to an external terminal. The piezoelectric actuator may yet further include a metal layer which is disposed between the piezoelectric layer and each of the metal terminal and the electrode layer.06-02-2011
20090309936METHOD OF MANUFACTURING A PIEZOELECTRIC ACTUATOR AND LIQUID EJECTION HEAD - The method of manufacturing a piezoelectric actuator includes the steps of: carrying out a first heat treatment of a diaphragm of stainless steel containing iron, chromium and aluminum, in a gas containing oxygen, so as to form an aluminum oxide film on a first surface of the diaphragm and form a chromium oxide film between the aluminum oxide film and the first surface of the diaphragm; forming a lower electrode on the aluminum oxide film; forming a piezoelectric body on a surface of the lower electrode reverse to a surface of the lower electrode on which the chromium oxide film and the aluminum oxide film are formed; forming an upper electrode on a surface of the piezoelectric body reverse to a surface of the piezoelectric body on which the lower electrode is formed; and calcining the piezoelectric body by carrying out a second heat treatment of the diaphragm with which the piezoelectric body is provided.12-17-2009
20090309935Head chip, liquid jet head, and liquid jet device - To prevent an adhesive from flowing into nozzles, there is provided a head chip includes: a plate having a plurality of grooves; a cover plate having an introduction aperture; a nozzle plate fixed to an end surface of the plate, and has nozzles formed at the same intervals; and escape holes formed between the nozzle plate and the plate, each have a contour which surrounds a periphery of each of the nozzles with the contour being spaced apart from a contour of each of the nozzles by at least a given distance, accumulate the adhesive remaining at a time of fixing the nozzle plate therein, and allow the nozzles and the grooves to communicate with each other. The nozzles and the escape holes are so arranged as to be displaced from adjacent nozzles and adjacent escape holes by a given distance in a vertical direction of the nozzle plate.12-17-2009
20110285794FLUID EJECTOR STRUCTURE - In one embodiment, a fluid ejector structure includes: a chamber for containing a fluid; a flexible membrane forming one wall of the chamber; a plurality of piezoelectric elements; a backing operatively connected to the piezoelectric elements such that an expansion and/or contraction of a piezoelectric element causes the piezoelectric element to bend; a rigid plate overlaying a center portion of the membrane; a post coupling the piezoelectric elements to the plate through the backing such that a movement of each piezoelectric element toward the chamber is transmitted to the plate through the post. The plate is configured to transmit movement of the post to the membrane in a rigid, or substantially rigid, piston-like manner.11-24-2011
20120098897INK-JET HEAD AND METHOD OF MANUFACTURING THE SAME - According to one embodiment, an ink-jet head includes a piezoelectric member which forms an ink pressure chamber, an electrode disposed on a side surface of the piezoelectric member, a nozzle plate attached to the piezoelectric member and including a nozzle hole communicating with the ink pressure chamber, a surface of the nozzle plate including a top surface of the nozzle plate, and a protection film which covers the surface of the nozzle plate, a peripheral portion of an adhesion part between the piezoelectric member and the nozzle plate, and the electrode. A recess is formed in a part of the protection film covering the top surface of the nozzle plate. The part of the protection film corresponds to a peripheral area of the nozzle hole.04-26-2012
20110292135Liquid jet head, liquid jet apparatus, and manufacturing method for the liquid jet head - To solve a problem in that it is difficult to form drive electrodes (12-01-2011
20110134196Inkjet head - There is provided an inkjet head including: a flow path plate having a plurality of ink chambers; a nozzle plate having a plurality of nozzles connected to the respective ink chambers in order to eject ink in the ink chambers to the outside; a piezoelectric actuator provided above the ink chambers and controlling pressure of the ink chambers; and a parylene protective film provided in order to prevent oxidization of the piezoelectric actuator.06-09-2011
20110141203Inkjet Ejector Having an Improved Filter - A manifold assembly has been constructed that filters ink before the ink enters an inkjet ejector in an inkjet print head. The manifold assembly includes an adhesive layer having openings, an ink manifold layer having a plurality of openings, the openings in the adhesive layer being aligned with the openings in the ink manifold layer, and a polymer layer having a plurality of filter areas, the filter areas being aligned with the openings in the ink manifold layer and the openings in the adhesive layer, the adhesive layer being interposed between the polymer layer and the ink manifold layer.06-16-2011
20110141202High Frequency Mechanically Actuated Inkjet - An inkjet ejector has been developed that enables the ejector to be operated at a frequency greater than 80 kHz. The inkjet ejector includes a body layer in which a pressure chamber is configured with an outlet having a volume that is less than a predetermined volumetric threshold, a flexible diaphragm plate disposed on the pressure chamber to form a wall of the pressure chamber, a piezoelectric transducer having a bottom surface attached to the diaphragm plate, and an inlet layer in which an inlet channel is configured to connect the pressure chamber to a source of liquid ink, a cross-sectional area of the inlet channel at the pressure chamber divided by a length of the inlet channel being greater than a predetermined linear threshold.06-16-2011
20100238237INK JET HEAD WITH LASER-MACHINED NOZZLES AND METHOD OF MANUFACTURING INK JET HEAD - An ink jet head includes a piezoelectric element including pressure chambers and partition walls, a nozzle plate including nozzles which are laser-machined, an adhesive which adheres the nozzle plate to the partition walls, a first protection film covering an electrode, and a second protection film which is stacked on the first protection film. The adhesive includes an excess portion which protrudes into the pressure chamber. A cut portion along a direction of radiation of a laser beam is formed at the excess portion. The second protection film includes a damage hole at an area on which the laser beam is made incident. The first protection film is exposed from the damage hole. A part of the first protection film, which corresponds to the damage hole, has a film thickness of 0.1 μm to 0.5 μm, and the first protection film has a refractive index of 1.1 to 2.0.09-23-2010
20090295877ELECTROSTATIC ACTUATOR, DROPLET DISCHARGE HEAD, METHOD FOR DRIVING DROPLET DISCHARGE HEAD, AND METHOD FOR MANUFACTURING ELECTROSTATIC ACTUATOR - To provide an electrostatic actuator capable of attaining a large diaphragm displacement by low voltage drive. Furthermore, a droplet discharge head provided with this electrostatic actuator, a method for driving a droplet discharge head, and a method for manufacturing an electrostatic actuator are provided. A diaphragm 12-03-2009
20110216135LIQUID-EJECTING HEAD AND LIQUID-EJECTING APPARATUS - A liquid-ejecting head includes a pressure-generating chamber communicating with a nozzle opening and includes a piezoelectric element including a piezoelectric layer and electrodes. The piezoelectric layer contains bismuth sodium potassium titanate and satisfies the inequality 0≦P09-08-2011
20110216134LIQUID EJECTION HEAD, LIQUID EJECTION DEVICE - A liquid ejection head including a piezoelectric element having a piezoelectric layer and electrodes The piezoelectric layer is 3 μm or less in thickness. The piezoelectric layer is made of a piezoelectric material including bismuth manganate ferrate and barium titanate. The piezoelectric layer is preferentially oriented with the (110) plane.09-08-2011
20110216133PIEZOELECTRIC ELEMENT, LIQUID EJCTION HEAD, AND LIQUID EJECTION DEVICE - A piezoelectric element having a piezoelectric layer and electrodes. The piezoelectric layer is 3 μm or less in thickness. The piezoelectric layer is made of a piezoelectric material containing a perovskite compound including bismuth manganate ferrate and barium titanate. The piezoelectric layer is preferentially oriented with the (110) plane. A full width at half maximum of the X-ray diffraction peak attributed to the (110) plane is 0.24° or more and 0.28° or less09-08-2011
20090195623METHOD FOR PRODUCING LIQUID TRANSPORT APPARATUS AND METHOD FOR PRODUCING PIEZOELECTRIC ACTUATOR - When a piezoelectric actuator, having a lower electrode, an intermediate electrode, and an upper electrode respectively on upper surfaces of a vibration plate, a lower piezoelectric layer, and an upper piezoelectric layer mutually stacked, is produced, a voltage of 30 V is applied to the upper and the intermediate electrodes, and −30 V is applied to the lower electrode so that a second active portion, which is included in portions of the piezoelectric layers interposed between the upper and the lower electrodes and from which a portion opposed to the intermediate electrode is excluded, is polarized downwardly. After that, 0 V is applied to the upper and lower electrodes, and 30 V is applied to the intermediate electrode so that a first active portion, which is included in the upper piezoelectric layer and which is interposed between the upper and the intermediate electrodes, is polarized upwardly.08-06-2009
20110261120LIQUID-EJECTING HEAD, LIQUID-EJECTING APPARATUS, AND PIEZOELECTRIC DEVICE - There is provided a piezoelectric device comprising a first electrode, a piezoelectric layer that is formed above the first electrode, a second electrode that is formed above the piezoelectric layer and a coating layer that is formed above the second electrode consisting of tungsten or titanium.10-27-2011
20100020135LIQUID-EJECTING HEAD, LIQUID-EJECTING APPARATUS, AND PIEZOELECTRIC TRANSDUCER - A liquid-ejecting head includes a pressure-generating chamber communicatively connected to a nozzle opening and also includes a piezoelectric transducer including a first electrode, a piezoelectric layer disposed on the first electrode, and a second electrode disposed on the piezoelectric layer. The first electrode contains platinum and titanium oxide with a rutile content of 76.5 to 100 mole percent.01-28-2010
20100123761LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, ACTUATOR DEVICE, AND METHOD FOR MANUFACTURING THE LIQUID EJECTING HEAD - A liquid ejecting head includes a first layer essentially composed of silicon oxide disposed over a substrate, a second layer essentially composed of zirconium oxide formed by depositing zirconium on the first layer and thermally oxidizing the zirconium, a third layer essentially composed of zirconium oxide deposited on the second layer by sputtering, and a pressure generating element disposed over the third layer.05-20-2010
20100265301PIEZOELECTRIC ELEMENT, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - A piezoelectric element has a piezoelectric body, two electrodes sandwiching the piezoelectric body, a protective layer covering the piezoelectric body and the two electrodes, and an antistatic layer formed on and/or in the protective layer.10-21-2010
20120033018INKJET HEAD AND METHOD OF MANUFACTURING INKJET HEAD - According to one embodiment, an inkjet head includes a substrate, a nozzle plate which includes nozzle lines, each of which includes nozzles, the nozzles which are included in one of the nozzle lines and the nozzles which are included in another of the nozzle lines alternating with each other, and forming one imaginary nozzle line, piezoelectric members which are opposed to the respective nozzle lines, and groove parts which are provided in each of the piezoelectric members, the groove parts corresponding to the nozzles to eject ink from the nozzles and being processed by cutting edges, one of the groove parts which corresponds to one of the nozzles in the imaginary nozzle line and another of the groove parts which corresponds to another nozzle adjacent to the nozzle in the imaginary nozzle line being processed by the cutting edges which are independent of each other.02-09-2012
20100079558PIEZOELECTRIC ELEMENT, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - A piezoelectric element includes in a laminated state a piezoelectric layer, a first electrode formed on a first surface of the piezoelectric layer, and a second electrode formed on a second surface of the piezoelectric layer which is opposite to the first surface. The piezoelectric layer has a film thickness of 5 μm or less, and has a flat portion formed as a second surface in parallel with the first surface, and a lateral portion inclined downwardly from the flat portion towards the first surface. The second electrode has a central portion formed in parallel with the flat portion, and a slope portion inclined downwardly from the central portion towards the flat portion. The inclination angle of the slope portion to the flat portion is gentle as compared with the inclination angle of the lateral portion to the first surface.04-01-2010
20080303877Liquid jetting apparatus - A liquid jetting apparatus includes: a cavity unit having a plurality of nozzles and pressure chambers; and an actuator unit applying jetting pressures to the pressure chambers. The actuator unit has a plurality of stacked ceramics layers, individual electrodes corresponding to the pressure chambers, a common electrode common to all the pressure chambers, and a barrier layer preventing the liquid from being penetrated therethrough. The barrier layer is stacked on a position which is between a contact surface, of the actuator unit, making contact with the cavity unit and the individual electrodes closest to the contact surface, except a position on the contact surface. It is possible to prevent the individual electrodes and the common electrode from being electrically short-circuited due to the liquid even when the ceramics layer in contact with the cavity unit has a crack.12-11-2008
20090201346LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head which includes a flow passage forming substrate that has pressure generating chambers which communicate with nozzles capable of ejecting a liquid, pressure generating elements which apply pressure to the pressure generating chambers in order to eject the liquid from the nozzles, lead electrodes that supply electric signals to the pressure generating elements, wiring substrates that supply the electric signals to the lead electrodes, and a supporting member that supports the wiring substrates so as to raise the wiring substrates from a surface of the liquid ejecting head having the lead electrodes provided thereon.08-13-2009
20110169898LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A piezoelectric element comprising a first electrode, a piezoelectric layer which is composed of a metal oxide containing lead, zirconium and titanium and which formed above the first electrode, and a second electrode formed above the piezoelectric layer. The piezoelectric layer has negatively charged Pb—O complex defects and positively charged Pb—O complex defects, the concentration of the negatively charged Pb—O complex defects being higher than the concentration of the positively charged Pb—O complex defects.07-14-2011
20080211882LIQUID-EJECTING HEAD AND LIQUID-EJECTING APPARATUS HAVING THE SAME - A liquid-ejecting head including a channel-forming substrate provided with pressure-generating chambers that are communicated with nozzle openings for ejecting a liquid, pressure-generating units for generating a change in the pressure in the pressure-generating chambers, and a fluid-resistant protection film is provided. The protection film is disposed at least on the inner walls of the pressure-generating chambers and includes an amorphous layer of an amorphous film disposed on the inner wall surfaces and a crystal layer of a crystallized film disposed on the surface of the amorphous layer.09-04-2008
20090109264LIQUID DROPLET JETTING HEAD - An ink-jet head includes a channel unit in which a channel is formed, a piezoelectric unit, and a wiring unit stacked on the piezoelectric unit. The wiring unit has a substrate, an individual supply-terminal group which includes a plurality of individual supply-terminals, a common supply-terminal, and an isolative covering layer, which is stacked on a surface of the substrate facing the piezoelectric unit. In the covering layer, a trap groove which runs between the individual supply-terminals and the common supply-terminal, and surrounds the individual supply-terminal group is formed. Accordingly, there is provided a liquid droplet jetting head which is capable of preventing a shorting between the individual drive electrodes of the piezoelectric unit, and between the individual supply-terminals of the wiring unit, due to the liquid entered from outside.04-30-2009
20100201757PIEZOELECTRIC ELEMENT, ACTUATOR DEVICE, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - A piezoelectric element includes a lower electrode film disposed on a substrate, a piezoelectric layer 08-12-2010
20080252697ACTUATOR DEVICE AND LIQUID EJECTING HEAD - An actuator device includes a piezoelectric element configured to include a lower electrode provided on a surface side of a substrate, a piezoelectric layer provided on the lower electrode, and an upper electrode provided on the piezoelectric layer. The lower electrode contains a precious metal. When a cross-section of the lower electrode is examined in the thickness direction using secondary ion mass spectroscopy (SIMS) , a ratio Z10-16-2008
20100201756PIEZOELECTRIC ACTUATOR, LIQUID DISCHARGING HEAD, AND METHOD FOR MANUFACTURING PIEZOELECTRIC ACTUATOR - A piezoelectric actuator includes a piezoelectric sheet, a first electrode provided on a front surface of the piezoelectric sheet, a second electrode provided on a reverse surface of the piezoelectric sheet and opposing at least a portion of the first electrode, and a fixed portion for supporting the piezoelectric sheet with the first and second electrodes provided thereon from a front surface side and a reverse surface side of the piezoelectric sheet. A sliding layer is provided between the fixed portion and the first electrode and between the fixed portion and the second electrode so as to allow for a relative displacement between the piezoelectric sheet and the fixed portion.08-12-2010
20100201755LIQUID EJECTION HEAD, LIQUID EJECTION APPARATUS AND IMAGE FORMING APPARATUS - A liquid ejection head includes: a flow channel unit including a plurality of pressure chambers arranged along a plane surface; and a piezoelectric actuator for changing volume of the plurality of pressure chambers so as to pressurize liquid in the plurality of pressure chambers, the piezoelectric actuator comprising: a diaphragm forming one wall surface of the plurality of pressure chambers; a plurality of piezoelectric bodies arranged on first regions of the diaphragm that are within a surface of the diaphragm opposite from the plurality of pressure chambers, the first regions overlapping with the plurality of pressure chambers respectively when viewed in a direction perpendicular to the plane surface; a plurality of individual electrodes arranged on second regions of one surface of the plurality of piezoelectric bodies respectively, the second regions overlapping with marginal parts of the plurality of pressure chambers that are non-central parts of the plurality of pressure chambers when viewed in the direction perpendicular to the plane surface; a common electrode arranged on another surface of the plurality of piezoelectric bodies; and a reinforcing member arranged on third regions of the diaphragm that are within the surface of the diaphragm opposite from the plurality of pressure chambers, the third regions respectively overlapping with pressure chamber partition portions between the plurality of pressure chambers when viewed in the direction perpendicular to the plane surface.08-12-2010
20090284571INKJET HEAD - On the back surface of a head chip having a plurality of rows of channels (row A, row B), the connection electrodes for row A that are electrically connected to the drive electrodes of the channels of row A are arranged, a first connection electrodes for row B that are electrically connected to the drive electrodes of the channels of row B are arranged between the rows of channels of row A and the rows of channels of row B, and also, between neighboring connection electrodes for row A, a second connection electrodes for row B are separately placed from the first connection electrodes for row B, the first connection electrodes and the second connection electrodes are connected electrically by drawing out interconnections, and the drawing out interconnections are in contact only with the first connection electrodes, the second connection electrodes, and the back surface of the head chip.11-19-2009
20090262169METHOD OF MANUFACTURING LIQUID JET HEAD, METHOD OF MANFUACTURING PIEZOELECTRIC ELEMENT AND LIQUID JET APPARATUS - A method of manufacturing a piezoelectric element includes a piezoelectric layer forming step of sequentially and repeatedly performing a heat treatment step of applying a piezoelectric material containing lead to a lower electrode film at a relative humidity in the range of 30% to 50% Rh and then performing a heat treatment to form a piezoelectric precursor film and a crystallization step of firing the piezoelectric precursor film to form a piezoelectric film on the lower electrode film, thereby forming a piezoelectric layer.10-22-2009
20090289999LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS INCLUDING THE SAME - A liquid ejecting head that ejects a liquid from a nozzle opening includes a first channel-forming substrate having a pressure-generating chamber that includes a diaphragm. A second channel-forming substrate is disposed on a surface opposite the diaphragm. An actuator that includes the diaphragm applies pressure to the pressure-generating chamber to eject the liquid from the nozzle opening. A first protective film is disposed on an inner surface of the pressure-generating chamber. A second protective film is disposed on a surface of the second channel-forming substrate that faces the first channel-forming substrate. The first channel-forming substrate is bonded to the second channel-forming substrate with an adhesive between the first and second protective films. Before curing, a contact angle θ11-26-2009
20110205314DROPLET EJECTING HEAD CAPABLE OF SUPPRESSING WORSENING OF DEFORMATION EFFICIENCY OF ACTUATOR - A first piezoelectric layer is formed with independent electrodes separated from one another and arranged at positions corresponding to openings of pressure chambers. The first layer has independent active portions at positions where the independent electrodes are located. The independent active portions can displace selectively. A second piezoelectric layer is formed with individual electrodes connected by connection electrodes and arranged at positions corresponding to the openings. The second layer has individual active portions at positions where the individual electrodes are located. The individual active portions cannot displace selectively. Each opening has a shape that is longer in one direction than in another direction intersecting the one direction. Each individual electrode has a shape that is longer in the one direction than in the another direction. The connection electrodes connect one-direction ends of the individual electrodes with one another, the one-direction ends being ends in the one direction.08-25-2011
20110205313Inkjet print head and method of manufacturing the same - There is provided an inkjet print head including: a pressure chamber storing ink in order to eject the ink to a nozzle; a piezoelectric actuator receiving part being recessed in order to correspond to the pressure chamber in a direction of the pressure chamber; and a piezoelectric actuator received in the piezoelectric actuator receiving part, in which viscous liquid having piezoelectric properties is filled and hardened, and supplying the pressure chamber with a driving force for ejection of the ink.08-25-2011
20090167823LIQUID TRANSPORTING APPARATUS AND PIEZOELECTRIC ACTUATOR - A liquid transporting apparatus includes a channel unit in which liquid transporting channel transporting the liquid is formed, the liquid transporting channel including a pressure chamber; a piezoelectric actuator which is connected to the channel unit, and which applies a pressure to the liquid in the pressure chamber, the piezoelectric actuator having: a piezoelectric layer; a first electrode arranged on a first surface of the piezoelectric layer to face the pressure chamber; a second electrode which is arranged, to face the first electrode, on a second surface of the piezoelectric layer different from the first surface; third electrodes arranged on the piezoelectric layer to sandwich the first electrode in a plan view; and fourth electrodes which are arranged, to face the third electrode, on the piezoelectric layer; a voltage applying mechanism which applies a voltage to the piezoelectric actuator; and a controller which controls the voltage applying mechanism.07-02-2009
20080231667FERROELECTRIC FILM, PROCESS FOR PRODUCING THE SAME, FERROELECTRIC DEVICE, AND LIQUID DISCHARGE DEVICE - A ferroelectric film having a columnar structure constituted by a plurality of columnar grains, and containing as a main component a perovskite oxide which has a composition expressed by a compositional formula A09-25-2008
20080284826LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head comprising a head body capable of ejecting liquid in from pressure generating chamber through nozzles by driving the pressure generating chamber, a plurality of head members adhered to the head body, the head members comprising a head casing having a channel for supplying the liquid to the pressure generating chamber and a plurality of notches for allowing a first and second adhesive to be filled in a plurality of gaps between the head members adhered to the head body, and a fixed member which is adhered to the liquid ejecting surface of the head members, wherein the first and second adhesive have different viscosities.11-20-2008
20080309736PIEZOELECTRIC INKJET HEAD - A piezoelectric inkjet head includes a plurality of pressure chambers in which ink to be ejected is filled. A plurality of piezoelectric actuators is respectively disposed in correspondence to the pressure chambers. A plurality of nozzles is in fluid communication with the pressure chambers, and at least two nozzles are formed in each of the pressure chambers.12-18-2008
20100141714LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A liquid ejecting head includes: pressure generation chambers which communicate with nozzle orifices; and piezoelectric elements which induce pressure change in the pressure generation chambers and each include a first electrode, a piezoelectric body layer formed on the first electrode, and a second electrode formed on the side opposite to the first electrode of the piezoelectric body layer, wherein the piezoelectric body layer includes two dielectric films having the substantially same interstitial distance and an intervening layer provided between the two dielectric films and having a different interstitial distance from that of the dielectric film.06-10-2010
20130120505BONDED SILICON STRUCTURE FOR HIGH DENSITY PRINT HEAD - A print head including a jet stack can be formed using semiconductor device manufacturing techniques. A blanket metal layer, a blanket piezoelectric element layer, and a blanket conductive layer can be formed over a semiconductor substrate such as a semiconductor wafer or wafer section. The piezoelectric element layer and the blanket conductive layer can be patterned to provide a plurality of transducer piezoelectric elements and top electrodes respectively, while the metal layer forms a bottom electrode for the plurality of transducers. Subsequently, the semiconductor substrate can be patterned to form a body plate for the print head jet stack. Forming a print head jet stack using semiconductor device manufacturing techniques can provide a high resolution device with small feature sizes.05-16-2013
20130120506MICROFLUIDIC JETTING DEVICE WITH PIEZOELECTRIC ACTUATOR AND METHOD FOR MAKING THE SAME - Disclosed herein is a microfluidic jetting device having a piezoelectric member positioned above a displaceable membrane. A voltage is applied across the piezoelectric member causing deformation of the piezoelectric member. The deformation of the piezoelectric member results in a displacement of the membrane, which is formed above a cavity. Displacement of the membrane creates pressure to jet or eject liquid from the cavity and suction liquid into the cavity through ports or apertures formed in the in membrane.05-16-2013
20090185013LIQUID JET HEAD, A LIQUID JET APPARATUS AND A METHOD FOR MANUFACTURING A LIQUID JET HEAD - An ink jet recording head 07-23-2009
20120069103LIQUID-EJECTING HEAD, LIQUID-EJECTING APPARATUS, AND PIEZOELECTRIC TRANSDUCER - A liquid-ejecting head includes a pressure-generating chamber communicatively connected to a nozzle opening and also includes a piezoelectric transducer including a first electrode, a piezoelectric layer disposed on the first electrode, and a second electrode disposed on the piezoelectric layer. The first electrode contains platinum and titanium oxide with a rutile content of 76.5 to 100 mole percent.03-22-2012
20110141206STACKED SLICE PRINTHEAD - A side-firing printhead comprises a stack that includes a plurality of slices, wherein each slice includes a PCB trigger layer and a diaphragm layer, the PCB trigger layer controls the flow of ink from the diaphragm layer, a first side of the diaphragm layer includes at least one cavity that delivers ink via one or more aperture braces. An aperture plate is coupled to one side of the stack to interface to the diaphragm layers contained therein, wherein the aperture plate contains a plurality of apertures that are located at each aperture brace. A first bracket is disposed on the top of the stack and a second bracket is disposed on the bottom of the stack, wherein at least one fastener couples the second bracket to the first bracket such that a predetermined amount of pressure is applied to the stack.06-16-2011
20090051739Liquid delivering apparatus and method of producing the same - A liquid delivering apparatus, including a flow-passage unit including an opening and a pressure chamber which accommodates liquid and which communicates with the opening; an oscillating plate which partially defines the pressure chamber; a piezoelectric material layer which is one of directly and indirectly stacked on the oscillating plate and which deforms upon application of an electric field thereto so as to oscillate the oscillating plate for delivering the liquid from the pressure chamber through the opening; and an electrode pattern and a drive circuit which apply the electric filed to the piezoelectric material layer. The drive circuit and the electrode pattern are one of directly and indirectly provided on the oscillating plate.02-26-2009
20110141205Method of Removing Thermoset Polymer From Piezoelectric Transducers in a Print Head - A method for mounting a piezoelectric transducer layer to a diaphragm layer exposes an electrode for each piezoelectric transducer after thermoset polymer filling the interstitial space between the piezoelectric transducers has been cured. The method includes bonding a polymer layer to a diaphragm layer having a plurality of openings, bonding piezoelectric transducers to the diaphragm layer, filling areas between the piezoelectric transducers on the diaphragm layer with thermoset polymer, and removing the thermoset polymer from the piezoelectric transducers with a laser to expose a metal electrode on each piezoelectric transducer.06-16-2011
20110141204Print Head Having a Polymer Layer to Facilitate Assembly of the Print Head - A method for assembling an inkjet jet print head enables piezoelectric transducers to be bonded to an inkjet ejector without closing inlets to a pressure chamber within the inkjet ejector. The method includes bonding a polymer layer to a diaphragm layer having a plurality of openings, bonding piezoelectric transducers to the diaphragm layer with a thermoset adhesive, placing thermoset polymer in areas between the piezoelectric transducers on the diaphragm layer, and drilling inlets through the thermoset polymer and the diaphragm at the openings in the diaphragm.06-16-2011
20090185012Inkjet head chip, manufacturing method for inkjet head chip, inkjet head, and inkjet recording apparatus - Provided is an inkjet head chip including: an ink chamber for containing ink; a plurality of piezoelectric elements deformable by applying a voltage; a plurality of channels partitioned with the plurality of piezoelectric elements and formed parallel to each other; a nozzle hole disposed in one end of the channel in a longitudinal direction, for discharging an ink droplet toward a recording medium; and an actuator plate including the plurality of channels formed therein, in which: the actuator plate has a structure in which at least a piezoelectric layer and a low-permittivity substrate layer are laminated together, the piezoelectric layer being formed of a piezoelectric material forming the plurality of piezoelectric elements, the low-permittivity substrate layer being formed of an insulating low-permittivity material having a lower permittivity compared with the piezoelectric material; and the insulating low-permittivity material is exposed on bottom surfaces of the plurality of channels.07-23-2009
20090231397LIQUID JET HEAD, A LIQUID JET APPARATUS AND A PIEZOELECTRIC ELEMENT - A piezoelectric layer is formed of a plurality of ferroelectric films containing lead (Pb), zirconium (Zr), and titanium (Ti) above a first electrode. A boundary portion between a first ferroelectric film closest to the first electrode and a second ferroelectric film formed above the first ferroelectric film has an area where the maximum value of a concentration of titanium with respect to zirconium is 80% or more.09-17-2009
20090231396LIQUID JET HEAD AND A LIQUID JET APPARATUS - An upper surface of a piezoelectric layer in an area opposed to a pressure generating chamber and a side surface of the piezoelectric layer in an arrangement direction of the piezoelectric elements are covered with an upper electrode. In addition, on one end in a longitudinal direction of the piezoelectric element, the piezoelectric layer extends up to an adhesive area of a flow passage forming substrate to which a circumferential portion of a piezoelectric element preserver of a joining substrate is adhered, and the lower electrode extends up to the outside of an end portion of the piezoelectric layer to form a terminal section in an end portion of the lower electrode.09-17-2009
20090213188 METHOD OF MANUFACTURING AN ACTUATOR APPARATUS, A METHOD OF MANUFACTURING A LIQUID JET HEAD AND A LIQUID JET APPARATUS - A method of manufacturing an actuator apparatus includes forming, on the base plate, a test pattern that is electrically discontinuous with the electrodes of the piezoelectric element and has the same layer as the lower electrode, the test pattern having the lower electrode with the upper electrode and the piezoelectric material layer removed by etching, and measuring electric resistance of the lower electrode of the test pattern to acquire the etch amount of the lower electrode when the piezoelectric element is formed.08-27-2009
20120081476LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head which includes a flow passage forming substrate that has pressure generating chambers which communicate with nozzles capable of ejecting a liquid, pressure generating elements which apply pressure to the pressure generating chambers in order to eject the liquid from the nozzles, lead electrodes that supply electric signals to the pressure generating elements, wiring substrates that supply the electric signals to the lead electrodes, and a supporting member that supports the wiring substrates so as to raise the wiring substrates from a surface of the liquid ejecting head having the lead electrodes provided thereon.04-05-2012
20090213189LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND ACTUATOR DEVICE - There is provided a liquid ejecting head including a channel forming member in which a pressure generating chamber is provided, a piezoelectric element that is provided at one surface side of the channel forming member, a terminal portion electrically connected to the piezoelectric element; the terminal portion being provided at the one surface side of the channel forming member, a wiring substrate which has a wiring layer, and an adhesive layer for electrically connecting the wiring layer and the terminal portion and for combing the wiring substrate and the channel forming member, the adhesive layer being formed by an anisotropic conductive material. A gap layer that is electrically discontinuous with the terminal portion and the wiring layer is provided on at least one surface of the channel forming member and the wiring substrate in an area in which the adhesive layer is provided.08-27-2009
20090244214LIQUID EJECTING HEAD, PIEZOELECTRIC ELEMENT, AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes a piezoelectric element in which a lower electrode, a piezoelectric layer, and an upper electrode are laminated in this order, and a flow path forming substrate in which the piezoelectric element is formed above one surface thereof and a pressure generating chamber being communicated with a nozzle opening is provided, in which the upper electrode is formed so as to extend over an upper surface of the piezoelectric layer and an upper portion of side faces of the piezoelectric layer, and a protective film is formed above portions of the piezoelectric layer, which are not covered by the upper electrode.10-01-2009
20090244213LIQUID 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 forming substrate with a diaphragm interposed therebetween. The piezoelectric elements include a lower electrode, a piezoelectric layer, and an upper electrode. The piezoelectric layer tapers downward at its ends. The lower electrode has a width smaller than the width of each of the pressure generating chambers. The piezoelectric layer has a larger width than the lower electrode. The diaphragm has a top layer formed of a titanium oxide (TiO10-01-2009
20100149285LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ACTUATOR - A liquid ejecting head includes a pressure generating chamber that communicates with a nozzle opening and a piezoelectric element that includes: a first electrode; a piezoelectric body layer that is formed on the first electrode and which has a perovskite structure with a general formula of ABO06-17-2010
20100149284LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, ACTUATOR DEVICE, AND MANUFACTURING METHOD OF LIQUID EJECTING HEAD - A liquid ejecting head includes: a piezoelectric element having a first electrode provided above a flow path forming substrate in which pressure generation chambers are formed, a piezoelectric body layer provided so as to correspond to each pressure generation chamber, and a second electrode provided above the piezoelectric body layer, wherein the first electrode, which is formed in the region facing the region where the piezoelectric body layer is formed, includes a first electrically-conductive layer, and a second electrically-conductive layer, which is made of a material having a smaller Young's modulus than that of the first electrically-conductive layer and is formed closer to the flow path forming substrate than the first electrically-conductive layer; and the first electrode, which is formed in the region facing the region where the piezoelectric body layer is not formed, has a surface constituted of the second electrically-conductive layer.06-17-2010
20090244212LIQUID 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 forming substrate with a diaphragm interposed therebetween. The piezoelectric elements including a lower electrode, a piezoelectric layer, and an upper electrode. The piezoelectric layer tapers downward at its ends. The lower electrode has a width smaller than the width of each of the pressure generating chambers. The piezoelectric layer has a larger width than the lower electrode to cover end faces of the lower electrode. The diaphragm has a top layer formed of a titanium oxide (TiO10-01-2009
20090244211LIQUID TRANSPORTING APPARATUS - A liquid transporting apparatus which transports a liquid includes a channel unit having a surface which is electroconductive and a liquid channel which includes a pressure chamber; a piezoelectric actuator applying a pressure to the liquid in the pressure chamber and having a piezoelectric layer arranged to face the surface of the channel unit and to cover the pressure chamber, electrodes which are arranged in the piezoelectric layer to face the pressure chamber, and a first isolating film arranged between the piezoelectric layer and the surface of the channel unit to cover the pressure chamber; and a deterioration detecting mechanism detecting a deterioration of the first isolating film and having a second isolating film which is electroconductive and stacked on a surface, of the first isolating film, on a side of the piezoelectric layer, and which is insulated from both the electrodes and the channel unit.10-01-2009
20080309735Droplet Ejection Head And Method Of Manufacturing The Same - A droplet ejection head according to the present invention includes a layered body made up of a plurality of metal plates, and an ejection face. The plurality of metal plates in the layered body include n metal plates whose lengthwise directions form the same angle with a rolling direction thereof. The n metal plates include a first stress plate and a second stress plate. The first stress plate has internal stress which forces the metal plate to bend along its lengthwise direction so as to make it protrude toward a ejecting direction. The second stress plate has internal stress which forces the metal plate to bend along its lengthwise direction so as to make it protrude toward a direction opposite to the ejecting direction.12-18-2008
20090273654LIQUID JET HEAD AND AN ACTUATOR APPARATUS - A liquid jet head includes a flow passage forming substrate formed of a crystal substrate provided with a pressure generating chamber communicating with nozzle openings, and a piezoelectric element including a lower electrode, a piezoelectric layer, and an upper electrode, which are provided on the flow passage forming substrate to change pressure in the pressure generating chamber. The piezoelectric layer has a thickness of 5 μm or less and is formed of perovskite type crystals, and the distance between a diffraction peak position A of an X-ray derived from a surface (11-05-2009
20090273653LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes: a flow passage forming substrate which is provided with a plurality of liquid passages each having a pressure generating chamber communicating with a nozzle opening for ejecting a liquid and a communication section communicating with the plurality of liquid passages; an elastic film which is formed on one surface of the flow passage forming substrate and has an opening in an area opposed to the communication section; a pressure generating unit which applies pressure to the inside of the pressure generating chambers; and a reservoir forming substrate which is adhered onto the surface of the flow passage forming substrate on a side of the pressure generating unit and is provided with a reservoir section communicating with the communication section to form a part of a reservoir. An intermediate layer patterned inward from the opening of the elastic film is formed in an area which is a periphery of the communication section on the elastic film and corresponds to the liquid passages, and the flow passage forming substrate and the reservoir forming substrate are adhered to each other through the intermediate layer. An end portion of the intermediate layer on a side of the opening of the elastic film is formed as a tapered portion of which a thickness is gradually smaller, and a cross-section shape in a direction in which the thickness of the tapered portion is gradually smaller is a concavely curved plane.11-05-2009
20100149286PRINTING DEVICE AND METHOD OF MANUFACTURING A LIGHT EMITTING DEVICE - A first pressure generating chamber, which is sealed by a first elastic plate mounted with a first piezoelectric element at one surface, and a second pressure generating chamber, which is sealed by a second elastic plate mounted with a second piezoelectric element at one surface are formed in a casing. The second pressure generating chamber is formed with an opening which is a discharge port. A mixture is discharged from the discharge port. A nozzle formed with an opening jets gas toward a substrate surface, and is provided in the vicinity of the discharge port of the ink head.06-17-2010
20100225711LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A liquid ejecting head is provided which includes a pressure generating room communicating with a nozzle opening, and a piezoelectric element generating a pressure change in the pressure generating room. In the above liquid ejecting head, the piezoelectric element includes a first electrode, a piezoelectric layer provided on the first electrode and having a thickness of 5 μm or less, and a second electrode provided on the piezoelectric layer at a side opposite to that of the first electrode, the piezoelectric layer contains lead, zirconium, and titanium, and a Schottky barrier value at the interface between the first electrode and the piezoelectric layer is in the range of 0.76 to 1.29 eV.09-09-2010
20100225710Multilayer Piezoelectric Actuator and Liquid Discharge Head - A multilayer piezoelectric actuator and a liquid discharge head are provided which are equipped with dense piezoelectric ceramics having improved insulation performance. The multilayer piezoelectric actuator comprises a multilayered body comprising a plurality of piezoelectric ceramic layers containing a PZT phase as a main crystal phase; and an electrode layer containing Ag, which is disposed at least one of on the surface and in the interior of the multilayered body. A lattice constant c of c-axis of the PZT phase is 0.4085 nm to 0.4100 nm, and a ratio of the lattice constant c of the c-axis of the PZT phase and a lattice constant a of a-axis, namely, the ratio c/a, is 1.011 or more. A second phase containing Ag different from the PZT phase is not substantially contained in the piezoelectric ceramic layer. A Zn09-09-2010
20100225712INKJET HEAD AND METHOD FOR MANUFACTURING THE SAME - A method for manufacturing an inkjet head includes providing a piezoelectric substrate having a porous structure, a diaphragm on the porous structure, and a piezoelectric substance layer on the diaphragm, and forming a cavity by etching out the porous structure from the piezoelectric substrate.09-09-2010
20110109703Liquid jet head, liquid jet apparatus, and manufacturing method for the liquid jet head - Provided is a liquid jet head (05-12-2011
20100253750LIQUID-EJECTING HEAD, LIQUID-EJECTING APPARATUS, AND ACTUATOR - A liquid-ejecting head includes a flow-passage-forming substrate that includes a pressure-generating chamber, the pressure-generating chamber being in communication with a nozzle through which droplets are ejected, and a piezoelectric element disposed on the flow-passage-forming substrate, the piezoelectric element altering the internal pressure of the pressure-generating chamber. The piezoelectric element includes a piezoelectric layer containing titanium (Ti) and zirconium (Zr), a first electrode, and a second electrode. The first electrode and the second electrode are disposed on the opposite sides of the piezoelectric layer,. The component ratio Ti/(Zr+Ti) of the piezoelectric layer is 0.40 or more but less than 0.50. At least a portion of the piezoelectric layer formed on the first electrode contains tetragonal crystals formed by phase transition under stress caused by an underlying layer.10-07-2010
20110175971ELECTRICALLY GROUNDED INKJET EJECTOR AND METHOD FOR MAKING AN ELECTRICALLY GROUNDED INKJET EJECTOR - An inkjet ejector provides electrical conductors for grounding electrically isolated layers in the ejector while electrically coupling a transducer of the ejector to a firing signal circuit. The inkjet ejector includes a diaphragm plate have a first side and a second side, a plurality of transducers mounted to the first side of the diaphragm plate, a polymer layer located on the second side of the diaphragm plate, an electrically conductive layer that is isolated from electrical ground by the polymer layer, and a plurality of electrical conductors, at least one of the electrical conductors extends from the electrically conductive layer to electrical ground through the polymer layer and other electrical conductors of the plurality of electrical conductors extend from each transducer to a firing signal circuit, the electrical conductor extending from the electrically conductive layer being the same material as the other electrical conductors in the plurality of electrical conductors.07-21-2011
20100085403LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND ACTUATOR DEVICE - A liquid ejecting head including a pressure-generating chamber which communicates with a nozzle opening, and a piezoelectric element including a first electrode, a piezoelectric layer formed above the first electrode and having a perovskite structure represented by the general formula ABO04-08-2010
20090073242MULTI-LAYER MONOLITHIC FLUID EJECTORS USING PIEZOELECTRIC ACTUATION - A fluid ejector including a silicon wafer having a first side and a second side. A multi-layer monolithic structure is formed on the first side of the silicon wafer. The multi-layer monolithic structure includes a first structure layer formed on the first side of the silicon wafer, and the first structure layer has an aperture. A second structure layer has a horizontal portion and closed, filled trenches or vertical sidewalls. The first structure layer, horizontal portion and the closed, filled trenches or vertical sidewalls of the second structure layer define a fluid cavity. An actuator is associated with the horizontal portion of the second structure layer, and an etched portion of the silicon wafer defines an open area which exposes the aperture in the first structure layer.03-19-2009
20090115823DROPLET 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 a second bonding film on one surface, the first and second films being bonded together 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 films contain an Si-skeleton 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 films.05-07-2009
20110032311INKJET PRINT HEAD AND METHOD OF MANUFACTURE THEREFOR - According to one embodiment, there is formed a sidewall that isolates pressure chambers and is provided with an oblique angle on its ends in the ink flow direction; an electrode provided on the sidewall and a wiring part are connected; a substrate and an piezoelectric material are adhered together using an adhesive; the piezoel ectric material is processed to form grooves therein; then, a metal film making an electrode and a wiring part is formed on the sidewall and substrate; then, a non-wiring part is formed on the substrate and the piezoelectric material by laser light as a first processing method; subsequently, a non-wiring part is formed on the adhesive portion by a second processing method different from the first method. Thus, widths of the electrode and the wiring connected to an actuator can be uniformized thereby to reduce the variation among voltages applied to the individual actuators.02-10-2011
20110122206Ink Ejection Device - A side shooting ink ejection device may comprise a front surface, side shooting nozzles having ejection orifices for ejecting fluid, and piezoelectric actuators for moving the fluid through vibration for ejecting the fluid out of the nozzle. The side shooting nozzles may be arranged to eject fluid in a side direction of the piezoelectric actuator. The front surface may comprise recessed portions. The side shooting nozzles may open into the recessed portions so that the ejection orifices are countersunk with respect to the front surface.05-26-2011
20110109704LIQUID DROPLET EJECTING HEAD, METHOD FOR MANUFACTURING THE SAME, AND LIQUID DROPLET EJECTING APPARATUS - A liquid droplet ejecting head includes a fluid path forming substrate having a fluid path communicating with nozzle holes and a diaphragm on the fluid path forming substrate. The diaphragm has a first surface facing a second surface. A piezoelectric element on the first surface of the diaphragm has a piezoelectric body layer interposed between a first electrode and a second electrode. A support substrate on the first surface of the diaphragm has a space for containing the piezoelectric element. The support substrate includes a first member formed on the first surface of the diaphragm, and a second member formed on the first member. The first member has a first opening for containing the piezoelectric element. The space of the support substrate is defined by the first opening of the first member and the second member. The main material of the first member is resin.05-12-2011
20090033722Piezoelectric actuation mechanism - Embodiments of the present disclosure are disclosed.02-05-2009
20120242757STACKED ADHESIVE LINES - A method for adhesive stacking includes dispensing a first line of adhesive onto a first substrate; dispensing at least one additional line of adhesive stacked onto the first line of adhesive; and placing a second substrate onto the at least one additional line of adhesive to join the first and second substrates.09-27-2012
20100231660METHOD OF MANUFACTURING SUBSTRATE, METHOD OF MANUFACTURING LIQUID EJECTION HEAD, LIQUID EJECTION HEAD AND IMAGE FORMING APPARATUS - The liquid ejection head includes: pressure chambers connected to ejection ports which eject liquid; actuators which apply pressure to liquid inside the pressure chambers; and a spacer which ensures spaces around the actuators. The spacer has a non-side face which is one of a top face and a bottom face of the spacer. The spacer has side faces which intersect with the non-side face. The spacer is formed with conducting parts. The conducting parts each have first electrodes and second electrodes. The first electrodes are exposed at the side faces of the spacer and connected to the actuators. The second electrodes are exposed at the non-side face of the spacer and connected to external wires for applying drive signals to the actuators.09-16-2010
20110074889PIEZOELECTRIC ELEMENT, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - A piezoelectric element includes a first conductive layer, a piezoelectric layer, and a second conductive layer. The piezoelectric layer is composed of a compound oxide containing at least lead, zirconium, titanium, and oxygen, and the compound oxide has a perovskite crystal structure. The piezoelectric layer has a thermally stimulated current having at least two peaks including a low temperature-side peak and a high temperature-side peak, and the magnitude of the low temperature-side peak is 1/30 or less of that of the high temperature-side peak.03-31-2011
20120147100LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, PIEZOELECTRIC ELEMENT, AND PIEZOELECTRIC CERAMIC - A liquid ejecting head includes a pressure generating chamber communicating with a nozzle aperture, and a piezoelectric element including a piezoelectric layer and electrodes that apply a voltage to the piezoelectric layer. The piezoelectric layer is made of a complex oxide having a perovskite structure. The piezoelectric layer contains bismuth, barium, iron and titanium. The piezoelectric layer has an intensity ratio of a (111) orientation intensity to a (100) orientation intensity of 3 or more.06-14-2012
20110069124LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A liquid ejecting head having pressure chambers each communicating with a nozzle opening for liquid ejection and piezoelectric element having a first electrode, a piezoelectric layer consisting a perovskite oxide containing lead, zirconium, and titanium, and a second electrode. The piezoelectric layer has a carbon intensity ratio in the range of 8 to 28 in its inner region excluding the volume 20 nm in depth from the second electrodes. The carbon intensity ratio is defined as the ratio of the maximum carbon intensity to the minimum as measured by secondary ion mass spectrometry along the thickness of the piezoelectric layer.03-24-2011
20090315958LIQUID EJECTION HEAD - Provided is a liquid ejection head having a structure in which an organic resinous member is formed in contact with a substrate. The substrate includes heat generators for generating heat energy used to eject ink, when being energized, and a metallic line portion for energizing the heat generators. The organic resinous member is provided with ejection openings corresponding to the heat generators. In the liquid ejection head, the substrate and the organic resinous member have an improved adhesion therebetween, and are prevented from being separated from each other. To improve the adhesion, the metallic line portion is cut so that no line portion exists under an end part of the organic resinous member (nozzle formation member). Then, two members of the line portion thus cut are connected to each other through a roundabout line formed under an insulating layer which has a good adhesion to the organic resin.12-24-2009
20090295876FERROELECTRIC OXIDE STRUCTURE, METHOD FOR PRODUCING THE STRUCTURE, AND LIQUID-DISCHARGE APPARATUS - A ferroelectric oxide structure includes a substrate and a ferroelectric thin-film deposited on the substrate. The ferroelectric thin-film has a thickness of greater than or equal to 200 nm and a tetragonal crystal system. The ferroelectric thin-film has (100) single-orientation crystal orientation.12-03-2009
20110254901LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS - A liquid ejecting head comprises a pressure chamber communicating with nozzle and a piezoelectric actuator. The piezoelectric layer is composed of a solid solution containing bismuth sodium titanate and 0.2 mol % or more and 8.0 mol % or less of manganese.10-20-2011
20080239022SELF ALIGNED PORT HOLE OPENING PROCESS FOR INK JET PRINT HEADS - In accordance with the invention, there are jet stacks, ink jet print heads, and methods of making jet stacks and ink jet print heads. The method of making an ink jet print head can include providing a partial jet stack including a diaphragm, a plurality of port holes, and having an ink outlet side and providing a polymer planarized piezoelectric array. The method can also include bonding the polymer planarized piezoelectric array to a side opposite to the ink outlet side of the partial jet stack using an adhesive, wherein the partial jet stack is aligned such that the planarized polymer covers the plurality of port holes, and using the partial jet stack as a mask to extend the port holes through the polymer by ablating the polymer and an excess portion of the adhesive from the ink outlet side using a laser.10-02-2008
20110254900Inkjet head assembly and method for manufacturing the same - There is provided an inkjet head assembly that includes: an inkjet head plate including an ink path; a piezoelectric actuator facing a pressure chamber in the inkjet head plate and providing driving force for ejecting ink to a nozzle from the pressure chamber; a package part stacked on the inkjet head plate and including a path moving ink introduced from the outside to an inlet of the inkjet head plate; and an electrical connector filling a via penetrating the package part and electrically connected with the piezoelectric actuator.10-20-2011
20080204520Print Head and a Method of Print Head Operation with Compensation for Ink Supply Pressure Variation - Disclosed is an inkjet print head for ejecting ink droplets, the print head comprises a micro machined chip, a holder that holds the chip and a manifold made as a recess in the holder for distributing ink to the micro machined chip. Sidewalls form the manifold. At least one of the sidewalls forming the manifold is a flexible sidewall. The sidewall deforms as a function of the print head operational pattern and changes the manifold volume such that it maintains ink pressure constant.08-28-2008
20080204521PRINTHEAD ASSEMBLY HAVING LAMINATED INK AND AIR DISTRIBUTION STRUCTURE - A printhead assembly is provided having a pagewidth inkjet printhead and an ink distribution system. The ink distribution system has a longitudinal distribution housing having ducts extending longitudinally therealong which each correspond to a different ink, a longitudinal cover cooperating with the housing and having ink inlet ports which each correspond to, and are in fluid communication with, one of the ducts and being, and a laminated ink distribution structure fixed to the housing for distributing ink from the ducts to the printhead. The distribution structure includes multiple layers positioned one upon another with at least one of the layers having ink holes therethrough. Each ink hole conveys ink from one of the ducts en route to the printhead. At least some of the layers has an array of aligned air holes therethrough.08-28-2008
20110164098LIQUID-EJECTING HEAD, LIQUID-EJECTING APPARATUS, PIEZOELECTRIC ELEMENT, AND METHOD FOR MANUFACTURING LIQUID-EJECTING HEAD - A piezoelectric element comprising a first electrode, a piezoelectric layer containing bismuth lanthanum iron and manganese formed above the first electrode, and a second electrode formed above the piezoelectric layer. The piezoelectric layer contains crystals preferentially oriented in a (111) plane.07-07-2011
20110164097LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A piezoelectric element comprising a piezoelectric layer containing bismuth, lanthanum iron manganese and titanium and a electrode formed above the piezoelectric layer.07-07-2011
20110074890DROPLET-EJECTING HEAD, DROPLET-EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A droplet-ejecting head including a substrate including a pressure chamber communicating with a nozzle hole and also a piezoelectric element that includes a lower electrode, a piezoelectric layer which is formed above the lower electrode, and an upper electrode formed above the piezoelectric element and that causes a change in pressure in a liquid contained in the pressure chamber. The piezoelectric layer includes a first piezoelectric sub-layer located on the lower electrode and a second piezoelectric sub-layer located between the first piezoelectric sub-layer and the upper electrode. The first piezoelectric sub-layer has a polarization axis predominantly directed in an in-plane direction of the first piezoelectric sub-layer. The second piezoelectric sub-layer is predominantly (100)-oriented in the pseudocubic coordinate system.03-31-2011
20100194827Method of Working Small Recess Portion, Method of Fabricating Liquid Ejection Head and Liquid Ejection Head - The invention is directed to a method of working a small recess portion. In the method, prior to press-forming small recess portions arrayed in a row by pressing a predetermined number of pieces of aligned male dies to a metal base plate, the metal base plate is previously formed with a highly rigid portion at a predetermined portion at a vicinity of an imaginary line extending in a row direction along end portions of predicted press portions to which the respective male dies are pressed.08-05-2010
20110074891METHOD OF MANUFACTURING LIQUID DISCHARGE HEAD, LIQUID DISCHARGE HEAD AND INK-JET PRINTER - A liquid discharge head may include a flow channel unit having a plurality of pressure chambers. The head may be manufactured by manufacturing an actuator unit having a piezoelectric layer which covers the pressure chambers. The actuator unit may be manufactured by forming a first electrode and a second electrode thicker than the first electrode on the actuator unit, and forming a conductive layer laminated on the first electrode. The conductive layer may deform, and the sum of the thicknesses of the conductive layer and the first electrode may be larger than the thickness of the second electrode prior to the fixing step. The head may be manufactured by positioning the actuator unit on a cavity plate, and fixing the actuator unit to the cavity plate by heating and pressurizing. The conductive layer may be deformed by the pressurizing force more than the first and the second electrode.03-31-2011
20090207214PIEZOELECTRIC ELEMENT SUBSTRATE, LIQUID DROPLET EJECTING HEAD, LIQUID DROPLET EJECTING DEVICE, AND PIEZOELECTRIC ELEMENT SUBSTRATE MANUFACTURING METHOD - A piezoelectric element substrate is provided with a support substrate, an insulating orientation auxiliary layer formed on the support substrate, a lower electrode layer formed on the orientation auxiliary layer so that an uncoated portion where the orientation auxiliary layer is not coated with the lower electrode layer is constituted at least a portion thereof, a piezoelectric substance layer formed on the lower electrode layer and the uncoated portion of the orientation auxiliary layer, and an upper electrode layer formed on the piezoelectric substance layer, wherein the orientation auxiliary layer and the piezoelectric substance layer comprise a material of the same crystal system.08-20-2009
20110134195Inkjet printing apparatus and method of driving inkjet printing apparatus - An inkjet printing apparatus according to example embodiments may include a flow channel plate including an ink inlet for introducing ink, a pressure chamber containing the introduced ink, and a nozzle connected to the pressure chamber and configured to eject ink. A piezoelectric voltage applier may apply a piezoelectric driving voltage to the piezoelectric actuator in such a way that the volume of the pressure chamber is reduced so as to eject an ink droplet. An electrohydrodynamic voltage applier may apply a first electrohydrodynamic driving voltage and a second electrohydrodynamic driving voltage to the electrohydrodynamic actuator. The first electrohydrodynamic driving voltage may generate a jet from the ink droplet such that the jet is ejected towards a printing medium, and the second electrohydrodynamic driving voltage (which has an opposite polarity to that of the first electrohydrodynamic driving voltage) may restore the ink droplet to the nozzle.06-09-2011
20110164095METHODS FOR MANUFACTURING LIQUID EJECTING HEAD AND PIEZOELECTRIC ELEMENT, LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A method for manufacturing a piezoelectric element comprising forming a titanium film containing titanium; forming a platinum film containing platinum on the titanium film; forming a piezoelectric precursor film containing bismuth, lanthanum, iron and manganese on the platinum film; crystallizing the piezoelectric precursor film to form a piezoelectric layer by firing the piezoelectric precursor film in an atmosphere of an inert gas; and forming an electrode on the piezoelectric layer.07-07-2011
20110164096LIQUID-EJECTING HEAD, LIQUID-EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A piezoelectric element comprising a first electrode, a piezoelectric layer which includes bismuth, lanthanum iron, and manganese and which formed above the first electrode and a second electrode formed above the piezoelectric layer. The integrated intensity of a diffraction peak observed at 20°<2θ<25° is 90% or more of the sum of the integrated intensities of diffraction peaks observed at 20°<2θ<50° in an X-ray powder diffraction pattern of the piezoelectric layer measured at φ=Φ=0°.07-07-2011
20120147101LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A piezoelectric element comprises a silicon oxide layer, an intermediate layer provided above the silicon oxide layer, a first electrode provided above the intermediate layer, a piezoelectric layer provided above the intermediate layer, and a second electrode provided above the piezoelectric layer. The piezoelectric layer is configured of a complex oxide having a perovskite structure and containing at least bismuth and iron. The intermediate layer contains magnesium oxide and/or aluminum oxide.06-14-2012
20120147099PIEZOELECTRIC ELEMENT, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - A piezoelectric element includes a piezoelectric layer, and an electrode provided to the piezoelectric layer. The piezoelectric layer is configured of a complex oxide having a perovskite structure containing potassium, sodium, and bismuth, niobium, iron, and chromium.06-14-2012
20120147098PIEZOELECTRIC ELEMENT, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - A piezoelectric element has a first electrode containing platinum, a piezoelectric layer formed above the first electrode, and a second electrode formed on the piezoelectric layer. The piezoelectric layer is composed of an oxide containing potassium, sodium, niobium, bismuth, and iron.06-14-2012
20120147097MICRO-EJECTOR AND METHOD OF MANUFACTURING THE SAME - There are provided a micro-ejector and a method of manufacturing the same. The micro-ejector includes an upper substrate including an inlet into which a fluid is drawn from the outside and a chamber groove; a lower substrate including a reservoir groove to provide a reservoir storing the fluid drawn through the inlet; a piezoelectric actuator formed on the upper substrate and supplying a driving force for fluid ejection to a chamber; and at least one support protruding from a bottom of the reservoir groove so as to support the upper substrate.06-14-2012
20110096126PRINTER HEAD AND PRINTING METHOD HAVING THE SAME - In an apparatus and a method for the printing of spacers in a pattern on substrates of display panels, a printer head includes a plurality of nozzle holes. Each printer head includes a nozzle group having a plurality of nozzle holes. A nozzle group may be selected by the conduction wirings on the vibration membrane and top plate sandwiching the piezoelectric actuators. To print complex patterns on the substrate a plurality of printer head sets, a plurality of printer heads in a line, can be arranged in various configurations.04-28-2011
20100214372LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND ACTUATOR UNIT - A liquid ejecting head includes a flow channel-forming substrate including a pressure-generating chamber that is in communication with a nozzle opening through which liquid is ejected; and a piezoelectric device that is provided on a surface of the flow channel-forming substrate and is configured to cause change in pressure of the pressure-generating chamber. The piezoelectric device includes a pair of electrodes constituted by a cathode and an anode, and a piezoelectric layer that is sandwiched between the pair of electrodes and is displaceably disposed. A negatively charged region is formed in a portion of the piezoelectric layer, the portion being near the cathode. A positively charged region is formed in a portion of the piezoelectric layer, the portion being near the anode.08-26-2010
20100079556Inkjet Printer - An inkjet printer comprising: a printhead having a plurality of nozzles assemblies, each nozzle assembly comprising: a nozzle chamber for containing ink, the chamber having a nozzle opening and an ink inlet; and a bend actuator for ejecting ink droplets from the nozzle opening by generating a positive pressure pulse in the ink during bending of the actuator; and an ink supply system for supplying ink to the printhead; and means for varying a hydrostatic pressure of ink supplied to the printhead, wherein increasing the hydrostatic ink pressure increases a volume of the ejected ink droplets, and decreasing the hydrostatic ink pressure decreases a volume of the ejected ink droplets.04-01-2010
20080218560PIEZOELECTRIC ELEMENT, INK JET RECORDING HEAD AND INK JET PRINTER - A piezoelectric element includes: a first electrode formed above a base substrate; a piezoelectric layer formed above the first electrode; and a second electrode formed above the piezoelectric layer, wherein the piezoelectric layer has a plurality of voids.09-11-2008
20100194828INKJET PRINTHEAD HAVING PIEZOELECTRIC ACTUATOR AND METHOD OF DRIVING THE PIEZOELECTRIC ACTUATOR - An inkjet printhead and a method of driving the inkjet printhead include a flow channel substrate having a pressure chamber, and a piezoelectric actuator formed on the flow channel substrate to apply a driving force to the pressure chamber to eject ink. The piezoelectric actuator includes a piezoelectric layer formed on the flow channel substrate to correspond to the pressure chamber, and a plurality of common electrodes and a plurality of driving electrodes alternately arranged in a length direction of the piezoelectric layer.08-05-2010
20110148995Inkjet print head, inkjet print head assembly and method of manufacturing inkjet print head assembly - There is provided an inkjet print head including: a head plate having nozzles arranged in a length direction, in which each of the nozzles ejects ink therethrough from a side surface of the head plate; an ink inlet provided in the lower portion of the head plate and drawing ink therethrough; a pressure chamber storing the ink drawn in through the ink inlet and communicating with the nozzle; and a piezoelectric element supplying the pressure chamber with driving force in a direction perpendicular to a direction of the ink ejected through the nozzle communicating with the pressure chamber and disposed on the pressure chamber having a membrane interposed therebetween.06-23-2011
20110148994Print Head Having a Polymer Aperture Plate and Method for Assembling a Print Head - A method for bonding a polymer layer to an outlet plate for an inkjet print head has been developed that enables the polymer layer to be attached to the outlet plate with little or no bowing of the polymer layer. The method includes aligning recesses in a bonding plate with channels in an outlet plate, interposing a polymer layer between the bonding plate and the outlet plate, and pressing the bonding plate against the polymer layer to bond the polymer layer to the outlet plate.06-23-2011
20100020134INK-JET HEAD - An ink-jet head is disclosed. The ink-jet head in accordance with an embodiment of the present invention includes: a body, a plurality of chambers, which are formed inside the body such that the plurality of chamber accommodate ink, a plurality of actuators, which are coupled to one side of the body such that pressure is supplied to each of the plurality of chambers, a holding groove, which is formed on one side of the body, and a common electrode, which is interposed between the actuators and the body and in which a part of the common electrode is formed on in the holding groove such that the plurality of actuators are electrically connected to one another. The ink-jet head can prevent defective signal transduction of an actuator and crosstalk between chambers.01-28-2010
20110148993Inkjet Ejector Having a Polymer Aperture Plate Attached to an Outlet Plate and Method for Assembling an Inkjet Ejector - A method forms apertures in a polymer aperture plate configured for use in a piezoelectric print head. The method includes bonding a polymer aperture plate to an outlet plate configured with outlets, and aligning a laser with the outlets in the outlet plate to ablate apertures in the polymer aperture plate that are aligned with the outlets.06-23-2011
20090167822Liquid Ejector - A liquid ejector including: a nozzle; a pressure chamber communicating, at one end thereof in a specific direction, with the nozzle; a liquid-store chamber; a restrictor through which the other end of the pressure chamber in the specific direction and the liquid-store chamber communicate with each other; and an actuator having a plurality of piezoelectric layers, a pair of electrode layers, and an active portion that is constituted by a portion of one of the plurality of piezoelectric layers, which portion is interposed between the pair of electrode layers, wherein the active portion is disposed at a position corresponding to the pressure chamber so as to extend in the specific direction, and has a shorter length than the pressure chamber in the specific direction, and wherein a center of the active portion in the specific direction is shifted toward the nozzle than a center of the pressure chamber in the specific direction.07-02-2009
20110050811LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS USING THE SAME - A liquid ejecting head includes a piezoelectric element including a first electrode, a seed layer provided on the first electrode and containing BiFeO03-03-2011
20110050810Droplet ejecting apparatus - A droplet ejecting apparatus, including: a droplet ejecting head including a cavity unit with pressure chambers and a piezoelectric actuator; and a voltage application device, the actuator including: first active portions; second active portions; a first potential electrode which is constantly given a first potential by the voltage application device; a second potential electrode which includes second branch portions respectively corresponding to the second active portions and a second trunk portion that connects the second branch portions and which is constantly given a second potential different from the first potential by the voltage application device; and individual electrodes to each of which the first and second potentials are selectively given at a connection portion thereof by the voltage application device, wherein the connection portion is disposed so as to overlap the second trunk portion as seen in a superposition direction in which the cavity unit and the actuator are superposed.03-03-2011
20120038714PIEZOELECTRIC THIN FILM, INK JET HEAD, METHOD OF FORMING IMAGE BY THE INK JET HEAD, ANGULAR VELOCITY SENSOR, METHOD OF MEASURING ANGULAR VELOCITY BY THE ANGULAR VELOCITY SENSOR, PIEZOELECTRIC GENERATING ELEMENT, AND METHOD OF GENERATING ELECTRIC POWER USING THE PIEZOELECTRIC GENERATING ELEMENT - The present invention provides a piezoelectric thin film comprising an electrode film with a (001) orientation, a (Na02-16-2012
20110063379LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A liquid ejecting head includes a pressure generating chamber communicating with a nozzle for ejecting liquid droplets and a piezoelectric element having a piezoelectric layer and a pair of electrodes disposed on both sides of the piezoelectric layer. The piezoelectric layer is made of a perovskite-type oxide containing barium titanate, calcium titanate, and europium oxide.03-17-2011
20110316939Micro-ejector - There is provided a micro-ejector. The micro-ejector according to an exemplary embodiment of the present invention may include an ejection device including a passage for ejecting fluid contained therein, and a piezoelectric actuator providing a driving force for ejecting fluid, a mounting plate including a passage for providing fluid to the ejection device formed therein, and a mounting groove on which the ejection device is mounted, and a connection member formed on the mounting plate, and adopted for connecting the piezoelectric actuator to an external power source.12-29-2011
20120044302LIQUID EJECTION HEAD - A liquid ejection head including: a channel unit having pressure chambers, ejection openings, and liquid channels; and an actuator unit including a piezoelectric layer and individual electrodes formed on a face of the piezoelectric layer, the actuator unit being configured to apply a drive voltage to the individual electrodes, wherein each of the individual electrodes includes: a land to which the drive voltage is applied; a main portion disposed such that an entire area thereof is opposite to a corresponding one of the pressure chambers in a direction perpendicular to the face of the piezoelectric layer; an extended portion extending, in an extending direction in which the extended portion extends, from the main portion toward the land along the face so as to connect the main portion and the land; and a dummy extended portion extending from the main portion along the face in an opposite direction opposite to the extending direction.02-23-2012
20120007929LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head comprising: a pressure chamber substrate where pressure chambers that communicates with nozzle holes are provided, and a piezoelectric element including a first conductive layer, a piezoelectric material layer, and a second conductive layer, wherein the piezoelectric element has an overlap area that overlaps the pressure chamber, the first conductive layer, the piezoelectric material layer, and the second conductive layer, wherein the second conductive layers overlap a plurality of the pressure chambers continuously, wherein, the first conductive layer is provided in each of the overlap areas and has an end portion area at one end side of the overlap area in the longitudinal direction, and wherein a width of the end portion area gets narrow in the lateral direction as the end portion area directs to the end of the longitudinal direction.01-12-2012
20120007928LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head comprising: a pressure generating chamber substrate having pressure generating chambers; and a piezoelectric element including first conductive layer, piezoelectric layer, and a second conductive layer provided above the pressure generating chamber substrate, wherein the piezoelectric element includes overlapped areas where the pressure generating chamber and the piezoelectric element overlap one another in plan view, the first conductive layer has a longitudinal direction in a first direction and a second direction orthogonal to the first direction and are provided for each of the overlapped areas, the second conductive layer is provided continuously so as to overlap with a plurality of the pressure generating chambers and includes end areas on the side of the ends of the overlapped areas in the first direction, and the end areas are each reduced in width in the second direction as it goes toward the end in the first direction.01-12-2012
20120007926LIQUID DISCHARGE HEAD AND METHOD OF PRODUCING LIQUID DISCHARGE HEAD - A liquid discharge head includes an element substrate including an energy generating element; a supporting member adhesively supporting the element substrate; a sheet member adhesively bonded to the supporting member to adjoin the inner surface of an opening accommodating the element substrate in the sheet member and an end section of the element substrate; a wiring substrate bonded to the sheet member to adjoin the inner surface of an opening accommodating the element substrate in the wiring substrate and the end section of the element substrate and including a wire electrically connected to the energy generating element; and a sealant sealing a part electrical connecting the wiring substrate and element substrate, wherein the height of a wiring substrate surface opposite to that contacting the sheet member from supporting member is smaller than the element substrate surface opposite to that contacting the supporting member from the supporting member.01-12-2012
20120056947INKJET HEAD AND METHOD OF MANUFACTURING THE SAME - An inkjet head including: a nozzle plate including: a nozzle configured to eject ink; a first electrode formed to surround the nozzle; a piezoelectric film provided to surround the nozzle and in contact with the first electrode; and a second electrode formed in contact with the piezoelectric film and made of a metal material forming the nozzle; and an ink supply path for supplying the ink to the nozzle.03-08-2012
20100110148PIEZOELECTRIC ELEMENT AND METHOD FOR MANUFACTURING THE SAME, LIQUID-EJECTING HEAD AND METHOD FOR MANUFACTURING THE SAME, AND LIQUID-EJECTING APPARATUS - A piezoelectric element includes a piezoelectric film containing lead (Pb), zirconium (Zr), and titanium (Ti). The piezoelectric film has a composition satisfying the relationship of Zr/(Ti+Zr)>Ti/(Ti+Zr) and has a polarization-electric field hysteresis loop having a Pm/2Pr of 1.95 or more and a Vc(−) of −1.75 V or more, wherein Pm denotes saturation polarization, Pr denotes remanent polarization, and Vc(−) denotes a negative coercive electric field intensity.05-06-2010
20090135231DROPLET EJECTING DEVICE - At least one liquid channel has a channel area larger than a channel area of the at least one nozzle. A nozzle plate is formed with the at least one nozzle and includes a piezoelectric section. The nozzle plate has a first surface and a second surface opposite the first surface. A channel structure member is fixed to the nozzle plate and is formed with the at least one liquid channel. A first electrode is provided on the first surface. At least part of the first electrode is arranged in a nozzle peripheral region of the at least one nozzle. A second electrode is provided on the second surface. At least part of the second electrode is arranged in the nozzle peripheral region of the at least one nozzle. An energy applying section applies ejection energy to liquid in the at least one liquid channel.05-28-2009
20120062658Liquid jet head, liquid jet apparatus, and method of manufacturing liquid jet head - The liquid jet head (03-15-2012
20110102519Liquid jet head, liquid ejection apparatus, and manufacturing method for the liquid jet head - Provided is a liquid jet head (05-05-2011
20110102518LIQUID-EJECTING HEAD, LIQUID-EJECTING APPARATUS, PIEZOELECTRIC ELEMENT, AND PIEZOELECTRIC MATERIAL - A liquid-ejecting head includes a pressure-generating chamber communicating with a nozzle opening, and a piezoelectric element. The piezoelectric element has piezoelectric layer contains a perovskite complex oxide containing Bi, La, Fe, and Mn and can undergo electric-field-induced phase transition.05-05-2011
20110102517LIQUID-EJECTING HEAD, LIQUID-EJECTING APPARATUS, PIEZOELECTRIC ELEMENT, AND PIEZOELECTRIC MATERIAL - A liquid-ejecting head includes a pressure-generating chamber communicating with a nozzle opening, and a piezoelectric element. The piezoelectric layer contains a perovskite complex oxide containing Bi, La, Fe, and Mn and is ferroelectric.05-05-2011
20120120162PIEZOELECTRIC ELEMENT, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - A piezoelectric element comprises a piezoelectric layer and electrodes provided to the piezoelectric layer. The piezoelectric layer has a perovskite structure that includes Bi, Fe, Ba, Ti, and Co, and the mole ratio of Co to the total amount of Co and Fe is 0.02 or more and 0.07 or less.05-17-2012
20120120161PIEZOELECTRIC ELEMENT, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - A piezoelectric element comprises a electrode and a piezoelectric layer made of a complex oxide having a perovskite structure containing at least bismuth, barium, iron, and titanium. A layered compound containing iron, barium, titanium and oxygen is formed between the piezoelectric layer and the electrode.05-17-2012
20100245493LIQUID DROPLET EJECTION HEAD - A droplet ejection head provided with a piezoelectric actuator made by using a KNbO09-30-2010
20100245491LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND ACTUATOR DEVICE - A liquid ejecting head includes a flow passage substrate having a pressure generation chamber in communication with a nozzle opening. A piezoelectric element includes first and second electrode and a piezoelectric substance layer and is positioned over one surface of the flow passage substrate. The piezoelectric element is deformed to form a convex toward the pressure generation chamber when the piezoelectric element is driven. A protection film formed from an inorganic material covers the piezoelectric element and has an opening through which an upper surface of the second electrode is exposed. An end of the opening in the protection film viewed in a direction of the length of the pressure generation chamber is located closer to the center than is an area at which the center of curvature of a curve of the piezoelectric element that forms near a wall around the pressure generation chamber during deformation operation.09-30-2010
20100245492METHOD OF MANUFACTURING LIQUID EJECTING HEAD, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - Provided is a method of manufacturing a liquid ejecting head, the method including forming a piezoelectric element having a width in a reference direction longer than a width in an orthogonal direction orthogonal to the reference direction on a first substrate, and adhering a second substrate to a surface of the first substrate opposed to the piezoelectric element at a temperature higher than a normal temperature, wherein, in the adhering of the second substrate, the second substrate is adhered such that the first direction of the second substrate is adjusted to the reference direction, using a first thermal expansion coefficient in a first direction on an adhesion surface with the first substrate greater than a second thermal expansion coefficient in a second direction orthogonal to the first direction and the first thermal expansion coefficient greater than a thermal expansion coefficient of the first substrate.09-30-2010
20120212548METHOD OF MANUFACTURING LIQUID JET HEAD, LIQUID JET HEAD, AND LIQUID JET APPARATUS - A method includes a stacked substrate forming step (S08-23-2012
20120133712INKJET HEAD AND METHOD OF MANUFACTURING THE INKJET HEAD - An inkjet head includes an actuator row fixed to a substrate. Plural concave grooves formed in the actuator row at intervals along a row direction serve as pressure chambers. The inkjet head ejects ink in the pressure chambers from nozzles facing the pressure chambers. The actuator row includes a piezoelectric member formed in a convex shape including a trapezoidal section forming sidewalls of the pressure chambers viewed in a latitudinal direction and a flat section projecting sideways from a side of the trapezoidal section. The flat section fits in a recessed section formed in the substrate.05-31-2012
20120162320PIEZOELECTRIC ELEMENT, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - A piezoelectric element comprises a piezoelectric layer and an electrode provided to the piezoelectric layer. The piezoelectric layer is made of complex oxide having a Perovskite-type structure containing bismuth and iron, and the complex oxide includes at least one kind of a first doping element selected from the group consisting of sodium, potassium, calcium, strontium and barium and a second doping element formed from cerium.06-28-2012
20120162321PIEZOELECTRIC ELEMENT, LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS - A piezoelectric element comprises a piezoelectric layer and an electrode provided to the piezoelectric layer. The piezoelectric layer has a Perovskite-type structure containing bismuth and iron, and includes nitrogen in an oxygen site of the Perovskite-type structure.06-28-2012
20120314007METHOD OF FORMING ELECTROMECHANICAL TRANSDUCER FILM, ELECTROMECHANICAL TRANSDUCER FILM, ELECTROMECHANICAL TRANSDUCER ELEMENT, AND LIQUID DISCHARGE HEAD - Disclosed is an electromechanical transducer film forming method including a surface modification process; an application process; and processes of drying, thermally decomposing, and crystallizing sol-gel solution applied to a portion of a surface of a first electrode. An electromechanical transducer film is formed on a desired pattern area on the surface of the first electrode by repeating the above processes. In the application process, each of dots of the sol-gel solution applied by the inkjet method drops onto both a first area inside the desired pattern area and a second area outside the desired pattern area. The first area is a hydrophilic area on the surface of the first electrode, and the second area is a hydrophobic area on the surface of the first electrode. The hydrophilic area and the hydrophobic area have been modified by the surface modification process.12-13-2012
20100007707LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ACTUATOR - A liquid ejecting head includes a pressure generating chamber that is communicated with a nozzle opening and a piezoelectric element includes a first electrode formed above the pressure generating chamber, a piezoelectric layer formed above the first electrode, and a second electrode formed above the piezoelectric layer. In addition, an amorphous layer including an amorphous material is formed on a surface of the piezoelectric layer at the second electrode side.01-14-2010
20100007706LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A liquid ejecting head includes a pressure generating chamber communicating with a nozzle opening, and a piezoelectric element generating a pressure change in the pressure generating chamber. In this liquid ejecting head, the piezoelectric element includes a first electrode, a piezoelectric layer provided above the first electrode, and a second electrode provided above the piezoelectric layer at a side opposite to the first electrode. The first electrode has a diffusion-preventing layer containing iridium oxide as a primary component, and the diffusion-preventing layer has stress relieving holes that pass through in the thickness direction thereof and that is filled with a material other than iridium oxide.01-14-2010
20100007705LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS AND PIEZOELECTRIC ELEMENT - A liquid ejecting head including a pressure generating chamber that communicates with a nozzle opening that ejects liquid and a piezoelectric element that generates a pressure change in the pressure generating chamber. The piezoelectric element includes a first electrode, a piezoelectric body layer that is formed on the first electrode which includes a grain-shaped region, and a second electrode that is formed on a side of the piezoelectric body layer that is opposite to the first electrode.01-14-2010
20120314006FLUID EJECTION DEVICE - A fluid ejection device includes a flexible membrane and an adhesive layer on the flexible membrane. The adhesive layer includes a first region and a second region extending from the first region. The fluid ejection device includes a piezoelectric material layer including an edge region and a central region. A surface of the edge region of the piezoelectric material layer is substantially coplanar with a surface of the second region of the adhesive layer. The surface of the edge region and the surface of the second region are substantially parallel with the flexible membrane.12-13-2012
20120314005FLUID EJECTION DEVICE - A fluid ejection device includes a flexible membrane and an adhesive layer on the flexible membrane. The adhesive layer includes a first region and a second region extending from the first region. The fluid ejection device includes a piezoelectric material layer including an edge region and a central region. A surface of the edge region of the piezoelectric material layer is substantially coplanar with a surface of the second region of the adhesive layer. The surface of the edge region and the surface of the second region are substantially parallel with the flexible membrane.12-13-2012
20120188313PIEZOELECTRIC ELEMENT, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - A piezoelectric element, comprises a piezoelectric layer consisting of a complex oxide represented as a mixed crystal including bismuth ferrate and barium titanate and an electrode provided to the piezoelectric layer. The piezoelectric layer contains 1 to 15 mol % of lithium relative to the complex oxide.07-26-2012
20120081475LIQUID DISCHARGING HEAD AND METHOD FOR PRODUCING THE SAME - There is provided a liquid discharging head discharging a liquid, including: a channel unit having a liquid channel including a pressure chamber which has an opening at one surface of the channel unit; a piezoelectric element formed of a piezoelectric material; an intermediate member preventing the liquid in the pressure chamber and the piezoelectric element from making contact with each other; a first adhesive layer composed of a first adhesive and adhering the channel unit and the intermediate member, the first adhesive being a thermo-setting adhesive starting to be cured at a first temperature; and a second adhesive layer composed of a second adhesive and adhering the intermediate member and the piezoelectric element, the second adhesive starting to be cured at a second temperature lower than the first temperature.04-05-2012
20120229579INK JET HEAD AND METHOD OF MANUFACTURING THE INK JET HEAD - According to one embodiment, an ink jet head includes: a nozzle plate including plural nozzles; a piezoelectric element including plural pressure chambers corresponding to the nozzles and sidewalls provided adjacent to the pressure chambers and functioning as driving elements that press the pressure chambers to eject liquid from the nozzles; a substrate to which the piezoelectric element is bonded; a frame member placed on the substrate to surround the piezoelectric element; and electrodes for driving the piezoelectric element. The piezoelectric element includes slopes continuous to the upper end of the piezoelectric element and not in contact with the nozzle plate. The substrate has a surface layer formed on the surface thereof and includes recess continuous to the slopes in the surface layer. The electrodes are formed on the slopes and the recess.09-13-2012
20120229578INK-JET HEAD AND METHOD OF MANUFACTURING INK-JET HEAD - According to one embodiment, an ink-jet head includes a main body, electrodes, electrically conductive portions, an insulating film, a frame member, a lid member, an electronic component, a protective agent. The main body includes pressure chambers. The insulating film covers the electrodes and a part of the electrically conductive portions. The frame member is attached to the main body from above the insulating film. The protective agent covers an end portion of the insulating film located between the frame member and the electronic component and the electrically conductive portions between the electronic component and the end portion of the insulating film.09-13-2012
20100231659THIN-FILM ACTUATOR, LIQUID EJECTION HEAD, INK CARTRIDGE, AND IMAGE FORMING APPARATUS - A thin-film actuator that deforms a diaphragm to generate force includes a lower electrode disposed on the diaphragm, a first piezoelectric layer disposed on the lower electrode, an intermediate electrode disposed on the first piezoelectric layer, a second piezoelectric layer disposed on the intermediate electrode, and an upper electrode disposed on the second piezoelectric layer.09-16-2010
20120092424Inkjet Printers - An inkjet printhead (04-19-2012
20120092423PIEZOELECTRIC ELEMENT, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - A piezoelectric element comprising an electrode film and a piezoelectric layer provided above the electrode film. The electrode film is preferentially oriented with (111) surface and contains platinum as the main component. The electrode film has a rhombohedral system.04-19-2012
20120092422INKJET HEAD AND METHOD OF MANUFACTURING THE INKJET HEAD - According to one embodiment, an inkjet head includes: a nozzle plate including plural nozzles; a piezoelectric element including plural pressure chambers corresponding to the nozzles and sidewalls provided adjacent to the pressure chambers and serving as driving elements configured to press the pressure chambers to eject liquid from the nozzles; a substrate to which the piezoelectric element is bonded; and a frame member placed on the substrate to surround the piezoelectric element. Grooves are formed on the upper end, and in which an adhesive is applied to bond the upper ends of the sidewalls and the nozzle plate.04-19-2012
20100194826LIQUID DROPLET DISCHARGE HEAD, LIQUID DROPLET DISCHARGE APPARATUS, AND METHOD FOR PRODUCING LIQUID DROPLET DISCHARGE HEAD - A piezoelectric actuator includes a first active portion interposed by an individual electrodes and a first constant electric potential electrode and a second active portion interposed by the individual electrode and a second constant electric potential electrode, and a wiring structure is provided with a wiring board and driver IC. The wiring board is provided with individual lines, a power line, a ground line, a first and second constant electric potential lines, a first short circuit line for short-circuiting the power line and the first constant electric potential line, and a second short circuit line for short-circuiting the ground line and the second constant electric potential line. Accordingly, a liquid droplet discharge head, which is capable of suppressing the crosstalk, is provided. The liquid droplet discharge head has the wiring structure suitable for the head.08-05-2010
20120242758USE OF PHOTORESIST MATERIAL AS AN INTERSTITIAL FILL FOR PZT PRINTHEAD FABRICATION - An ink jet printhead including a plurality of piezoelectric elements and a photosensitive interstitial layer which fills spaces between each adjacent piezoelectric element. The ink jet printhead can be formed using a simplified method to pattern the photosensitive interstitial layer, and to remove a diaphragm attach material which covers a plurality of openings through a diaphragm using laser ablation.09-27-2012
20080239024Method 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 respectively each at portion corresponding to the drive area, and a ceramics layer formed of a ceramics material and stacked to face the surface of the piezoelectric material layer on which the first electrode is arranged, the method including: forming a stacked body which includes the piezoelectric material layer, the ceramics layer, and the first electrode, and sintering the stacked body; forming the second electrode on the other surface, of the piezoelectric material layer after the sintering, not facing the ceramics layer; and forming elastic layers having a lower coefficient of elasticity than that of the piezoelectric material layer on both surfaces respectively of the stacked body after the sintering.10-02-2008
20080239023LIQUID EJECTING HEAD - A liquid ejecting head includes a flow passage unit, a vibrator unit, a case unit, and a common base substrate. The flow passage unit includes a liquid flow passage and a diaphragm portion. The liquid flow passage at least includes a pressure chamber that communicates with a nozzle opening. The diaphragm portion varies a volume of the pressure chamber. The vibrator unit inlucdes a piezoelectric vibrator that displaces the diaphragm portion. The case unit accommodates the vibrator unit. The common base substrate connects a plurality of pairs of the case unit and the flow passage unit. The common base substrate is fixed between the plurality of pairs of the case unit and the flow passage unit.10-02-2008
20080231668Liquid droplet ejection apparatus - A liquid droplet ejection apparatus includes: a flow path unit including first and second pressure chambers for first and second liquids, respectively, and first and second nozzles communicating with the first and second pressure chambers, respectively, each of the first and second nozzles including a tip opening; and a pressure generating unit which generates a pressure for the liquids in the first and second pressure chambers to eject the liquids through the tip openings of the first and second nozzles. A diameter of the tip opening of the first nozzle is larger than that of the tip opening of the second nozzle and a length of the first nozzle is shorter than that of the second nozzle.09-25-2008
20130141496LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A liquid ejecting head which discharges a liquid from nozzle openings includes: a piezoelectric element which is provided with a piezoelectric layer and an electrode provided on the piezoelectric layer, and the piezoelectric layer is formed of a complex oxide having a perovskite structure which contains bismuth, iron, barium, titanium, and at least one selected from the group consisting of copper, nickel, and zinc.06-06-2013
20080316281Piezoelectric Printhead - Contemplated printheads include a piezoelectric material in which a channel is formed across the piezoelectric material to thereby create at least part of the nozzle through which ink is expelled from the inside of the printhead to the outside. Contemplated nozzles may be configured as cylindrical elements or ring-shape elements. Consequently, application of a voltage across the piezoelectric channel may result in constriction of the cylindrical element or convex/concave deformation of the ring-shape element. Most preferably, the piezoelectric material, conductive traces, and supporting structures are applied from a liquid phase to a carrier, and shaped using photolithographic methods.12-25-2008
20130100212Process for Adding Thermoset Layer to Piezoelectric Printhead - Disclosed is a process for preparing an ink jet printhead which comprises: (a) providing a diaphragm plate having a plurality of piezoelectric transducers bonded thereto; (b) aligning an electrical circuit board having a fill joint with the piezoelectric transducers and temporarily attaching the electrical circuit board to the piezoelectric transducers, thereby creating a layered structure having interstitial spaces between the diaphragm plate, the piezoelectric transducers, and the electrical circuit board; (c) applying a thermoset polymer through the fill joint and allowing it to fill the interstitial spaces via capillary action; and (d) curing the thermoset polymer to form an interstitial polymer layer.04-25-2013
20080218561LIQUID-JET HEAD AND LIQUID-JET APPARATUS - A liquid-jet head includes a passage-forming substrate. A plurality of pressure generating chambers communicating with nozzles. Piezoelectric elements each include a lower electrode, a piezoelectric layer and an upper electrode. Leads for the upper and lower electrodes are drawn out. In the liquid-jet head, the lower electrode is a common electrode continuously provided in the region facing the pressure generating chambers. At least an end on one side of the lower electrode in a direction perpendicular to an arrangement direction of the pressure generating chambers is positioned in the region facing the pressure generating chambers. The lead electrode for the lower electrode is provided outside of a region corresponding to a space between the pressure generating chambers. The lead electrode for the lower electrode is connected through a common lead portion extended from the lower electrode.09-11-2008
20130127956Liquid Ejecting Head and Liquid Ejecting Apparatus - Liquid ejecting head comprises a unit head bonded to a communication substrate. A plurality of liquid chamber forming portions are formed in the unit case, along a first direction at positions that are separated by a partition wall. A plurality of empty liquid chamber portions and supply-side communication paths are formed in the communication substrate. The supply-side communication paths include a common communication path formed in a opposite side with a thin thickness portion left in the surface side of the communication substrate, and individual communication paths. With a surface of the partition wall and a surface of the thin thickness portion bonded together, the empty liquid chamber forming portions and the empty liquid chamber portions communicate with each other so as to define a plurality of common liquid chambers.05-23-2013
20110273519LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A liquid ejecting head includes a pressure-generating chamber in fluid communication with a nozzle opening and a piezoelectric element having a piezoelectric layer and electrodes provided to the piezoelectric layer. The piezoelectric layer is composed of a complex oxide having a perovskite structure containing bismuth and cerium in the A site of the perovskite structure and at least one metallic element selected from the group consisting of iron, cobalt, and chromium in the B site of the perovskite structure, and the molar ratio of the metallic element or elements in the B site, the bismuth, and the cerium is 1:(1−x):(3x/4).11-10-2011
20110221833LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A piezoelectric element includes a piezoelectric layer, and an electrode provided on the piezoelectric layer. The piezoelectric layer is composed of a compound oxide having a perovskite structure and containing bismuth lanthanum ferrate manganate and barium titanate. The molar ratio of the barium titanate to the total amount of the bismuth lanthanum ferrate manganate and the barium titanate is 0.09 or more and 0.29 or less. A liquid ejecting head includes a pressure-generating chamber communicating with a nozzle opening, and a piezoelectric element as described above. A liquid ejecting apparatus includes the above-described liquid ejecting head.09-15-2011
20110221832LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A piezoelectric element includes a first electrode which is an individual electrode, a piezoelectric layer, and a second electrode which is a common electrode. The piezoelectric element is provided with a piezoelectric active section and a piezoelectric nonactive section so as to face the pressure generating chambers. The piezoelectric nonactive section extends to the outside of the pressure generating chambers. On the piezoelectric layer of the piezoelectric nonactive section, a stress controlling layer is provided which has the same direction of internal stress as internal stress of the second electrode and is electrically insulated from the second electrode.09-15-2011
20110228015DROPLET-EJECTING HEAD, METHOD FOR MANUFACTURING DROPLET-EJECTING HEAD, AND DROPLET-EJECTING APPARATUS - Provided are a droplet-ejecting head having good displacement and a droplet-ejecting apparatus. The droplet-ejecting head includes a pressure chamber; a piezoelectric element which includes a first electrode, a second electrode, and a piezoelectric layer disposed between the first electrode and the second electrode, the piezoelectric layer being made of a lead zirconate titanate; and a nozzle plate having a nozzle orifice communicating with the pressure chamber. The first electrode includes at least one lanthanum nickelate layer which is located on the piezoelectric layer side. The piezoelectric layer has a distribution in which the concentration of lanthanum and nickel decrease from the interface between the lanthanum nickelate layer and the piezoelectric layer toward the second electrode. Lanthanum is locally distributed in the piezoelectric layer. Nickel is globally distributed in the piezoelectric layer so as to have a plurality of peaks. At least one of the peaks is split.09-22-2011
20130147881POLYMER FILM AS AN INTERSTITIAL FILL FOR PZT PRINTHEAD FABRICATION - A method and structure for an ink jet printhead, and a printer including the ink jet printhead. The printhead can include a polymer as a film spacer which separates an electrical interconnect such as a printed circuit board or a flexible circuit from a printhead diaphragm, such that the film spacer is interposed between the electrical interconnect and the diaphragm. In an embodiment, a piezoelectric actuator is free from contact with the film spacer. Embodiments of a process for forming the printhead may have reduced processing stages requiring fewer manufacturing tools than some other processes. Embodiments of the resulting printhead and printer may have fewer structural components than some other printheads and printers.06-13-2013
20130147882Liquid Ejecting Head and Liquid Ejecting Apparatus - A liquid ejecting head includes a retention member with a liquid inlet path, a liquid ejecting head main body configured to dispense liquid droplets through a nozzle, and a fixing plate to which the liquid ejecting head main body is fixed. The fixing plate includes a first joint portion to which the nozzle surface is attached, and a second joint portion to which the retention member is attached. The retention member includes a head chamber. Portions of the retention member and the liquid ejecting head main body around the liquid inlet path and the liquid flow path are bonded, the liquid ejecting head main body being attached to the first joint portion via the nozzle surface and accommodated in the head chamber, and the second joint portion and a periphery of the opening of the head chamber in the retention member are attached to each other.06-13-2013
20130155155LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A liquid ejecting head contains a piezoelectric element having a piezoelectric layer and an electrode disposed on the piezoelectric layer, in which the piezoelectric layer contains a complex oxide containing bismuth, iron, barium, and titanium and having a perovskite structure, has a yield stress of 5.66 GPa or more, and has a Young's modulus of 114 GPa or more.06-20-2013
20130187989LIQUID JET HEAD AND LIQUID JET APPARATUS - Provided is a liquid jet head (07-25-2013
20130187990LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A piezoelectric layer includes a buffer layer containing an oxide containing Bi and Co and disposed on an electrode, and a layer disposed on the buffer layer and containing a perovskite oxide containing Bi, Ba, Fe and Ti. A piezoelectric element includes the piezoelectric layer and the electrode. A liquid ejecting head includes a pressure generating chamber communicating with a nozzle aperture, and the piezoelectric element. A liquid ejecting apparatus includes the liquid ejecting head.07-25-2013
20130187991LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS - A liquid ejection head includes a flow path unit having pressure generating chambers, a case head that is mounted to the flow path unit, and a piezoelectric element unit having a fixation member and piezoelectric elements, an adhesive surface of the fixation member being adhered to the case head by using a first adhesive and a second adhesive, and the piezoelectric elements being bonded to a piezoelectric element attachment surface of the fixation member which intersects the adhesive surface and also attached to islands that oppose the pressure generating chambers of the flow path unit, wherein the second adhesive has curing time shorter than that of the first adhesive, and the first adhesive has adhesion strength higher than that of the second adhesive and is applied on a first adhesive surface on the adhesive surface of the fixation member which is subject to a reaction force of the piezoelectric elements.07-25-2013
20120007927PIEZOELECTRIC ELEMENT, PIEZOELECTRIC ACTUATOR, LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A piezoelectric element includes a first electrode, a first piezoelectric layer which is formed at an upper side of the first electrode and at lateral sides to the first electrode, a porous layer which is formed so as to cover side surfaces of the first piezoelectric layer, and a second electrode which is formed at an upper side of the first piezoelectric layer and the porous layer. In the piezoelectric element, the porous layer contains at least one metal element constituting the first piezoelectric layer.01-12-2012
20130194352LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS - A liquid ejection head includes a communication plate in which a first liquid chamber that communicate with a plurality of pressure chambers is formed, wherein a plurality of the first liquid chambers separated from each other are provided in the first direction and the first liquid chamber communicates with the pressure chamber through an opening in the thickness direction of the communication plate.08-01-2013
20130194353LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS - A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber.08-01-2013
20120038715PIEZOELECTRIC FILM, INK JET HEAD, METHOD OF FORMING IMAGE BY THE INK JET HEAD, ANGULAR VELOCITY SENSOR, METHOD OF MEASURING ANGULAR VELOCITY BY THE ANGULAR VELOCITY SENSOR, PIEZOELECTRIC GENERATING ELEMENT, AND METHOD OF GENERATING ELECTRIC POWER USING THE PIEZOELECTRIC GENERATING ELEMENT - The purpose of the present invention is to provide a lead-free piezoelectric film including a lead-free ferroelectric material and having low dielectric loss and high piezoelectric performance comparable to that of PZT, and a method of manufacturing the lead-free piezoelectric film.02-16-2012
20130201259INK JET PRINT HEAD WITH PIEZOELECTRIC ACTUATOR - An ink jet print head, having a pressure generation chamber arranged for being in communication with a print head nozzle and an actuator membrane for delimiting the pressure generation chamber. The actuator membrane has a substrate and a piezoelectric actuator provided on the substrate, said piezoelectric actuator having a lower electrode, an upper electrode and at least one piezoelectric layer arranged between the lower electrode and the upper electrode; the substrate and the upper electrode are arranged on opposite sides of the piezoelectric layer, and the upper electrode has a Titanium-Tungsten film.08-08-2013
20130093817LIQUID JET HEAD, LIQUID JET APPARATUS, AND PIEZOELECTRIC ELEMENT - [Object] There are provided a liquid jet head and a liquid jet apparatus that each include a piezoelectric element including a piezoelectric layer in which the occurrence of cracks is suppressed, and the piezoelectric element.04-18-2013
20130093818LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC ELEMENT - A liquid ejecting head for discharging liquid from nozzle openings is provided. The liquid ejecting head includes a piezoelectric film and piezoelectric element with electrodes on the piezoelectric film. The piezoelectric film includes barium titanate-based composition having a perovskite structure containing barium, titanium, and copper less than or equal to 3 mol % of titanium amount.04-18-2013
20120086759LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes: a pressure generation chamber that communicates with a nozzle opening which ejects liquid; a pressure generation unit that causes a change in pressure in the pressure generation chamber; and a flexible wiring substrate that transmits a control signal from outside and includes a wiring layer which is connected to each individual electrode of a plurality of pressure generation units and also connected to a terminal portion of a common electrode common to the plurality of pressure generation units. In the liquid ejecting head, the wiring layer of the wiring substrate includes slits in an area connected to the terminal portion of the common electrode of the pressure generation unit, while the wiring layer of the wiring substrate and the terminal portion of the pressure generation unit are connected via an anisotropic conductive material.04-12-2012
20130208055INKJET HEAD AND METHODS OF MANUFACTURING THE INKJET HEAD - An inkjet head comprises a pressure chamber, piezoelectric elements, and pressure chamber electrodes disposed on an interior side of the pressure chamber, the pressure chamber electrodes being configured to apply a driving voltage to the piezoelectric elements. The inkjet head also includes a nozzle plate adhered to the frame body with the resin film. The nozzle plate includes an ink discharge hole configured to discharge ink. The inkjet head includes a frame body including an attaching part to which a mask that surrounds the outer perimeter of the inkjet head is to be attached. The inkjet head also includes a resin film that coats the pressure chamber electrodes and that includes an end portion that extends to and covers the attaching part. The inkjet head also includes a layer that coats the end portion of the resin film and by which the mask is to be adhered to the frame.08-15-2013
20130208056LIQUID DROPLET EJECTING HEAD - A liquid droplet ejecting head includes an individual electrode provided corresponding to a pressure generating chamber, a piezoelectric layer formed over the individual electrode, and a common electrode formed over the piezoelectric layer and provided across a plurality of the pressure generating chambers. A conductive member is provided outside an active portion of the piezoelectric layer in the longitudinal direction, the conductive member being formed over the piezoelectric layer and being insulated from the individual electrode and the common electrode, the piezoelectric layer being interposed between the individual electrode and the common electrode.08-15-2013

Patent applications in class Layers, plates

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