Abstract: When protective portions are independently provided for each energy generation element, a leakage current inspection between the protective portions and the energy generation elements cannot be performed at once. Therefore, there is a concern that the inspection in manufacturing a substrate for liquid ejection head requires time. Therefore, the substrate for liquid ejection head is manufactured by performing a leakage current inspection between a connecting portion that is electrically connected to plurality of protective portions and a terminal to which the plurality of energy generation elements are connected, and thereafter removing the connecting portion.

Abstract: An image forming apparatus includes: a recording head including multiple nozzles and multiple piezoelectric elements that generate pressure for causing droplets to be ejected from the nozzles; a driving-waveform generating unit that generates a driving waveform to be applied to the piezoelectric elements; first switching devices each disposed between the driving-waveform generating unit and respective one of the piezoelectric elements; second switching devices each disposed between a predetermined voltage and respective one of the piezoelectric elements; and a slight-vibration control unit. The slight-vibration control unit causes slight vibrations to be applied to a non-ejection nozzle by placing the second switch device for the non-ejection nozzle in a conduction state, and, when a predetermined period of time has elapsed after shift to the conduction state, placing the second switch device in a non-conduction state and the first switch device for the non-ejection nozzle in a conduction state.

Abstract: According to an embodiment, an inkjet head includes a nozzle from which ink is ejected, an ink pressure chamber, an oscillating plate, a first electrode, a piezoelectric layer, a second electrode, and a passivation layer. The ink pressure chamber is provided in the inkjet head to supply ink to the nozzle. The oscillating plate is formed to surround the nozzle. The first electrode is formed to surround the nozzle and to be in contact with the first oscillating plate. The piezoelectric layer is configured to surround the nozzle and to be in contact with the first electrode. The second electrode is formed to surround the nozzle and to be in contact with the piezoelectric layer. The passivation layer is formed to surround the nozzle and to be in contact with the first electrode, the second electrode, or the first oscillating plate.

Abstract: A droplet discharging head includes: a nozzle substrate that includes a nozzle opening to discharge a droplet therethrough; a liquid chamber substrate that includes liquid pressure chambers communicating with the nozzle openings; a vibration plate arranged to face the nozzle substrate with the liquid chamber substrate interposed therebetween; piezoelectric elements that are provided to face the liquid pressure chambers with the vibration plate interposed therebetween and are arranged in a predetermined direction; a driving element provided, in a flip-chip implementation, on a flow path substrate that includes the nozzle substrate, the liquid chamber substrate, the vibration plate, and the piezoelectric elements; and a first reinforcing wire that is disposed to at least one of the flow path substrate and the driving element, has a band shape extending in a direction along a row of the piezoelectric elements, and is connected to a common electrode shared by the piezoelectric elements.

Abstract: A fluid ejection device includes a flexible membrane, an adhesive layer, a piezoelectric material layer, and first and second electrically conductive layers. The adhesive layer and the piezoelectric material layer include edge regions and central regions. A surface of the edge region of the piezoelectric material layer is coplanar with a surface of the edge region of the adhesive layer. The first electrically conductive layer is between the piezoelectric material layer and the adhesive layer such that a surface of the first electrically conductive layer is coplanar with the surface of the edge region of the piezoelectric material layer and the surface of the edge region of the adhesive layer. The second electrically conductive layer is over the surface of the edge region of the piezoelectric material layer, the surface of the edge region of the adhesive layer, the surface of the first electrically conductive layer, and the flexible membrane.

Abstract: A head chip for a liquid jet head of a recording apparatus has liquid jet channels arranged in a longitudinal direction of the head chip, and nozzle holes that communicate with the liquid jet channels. A flow path plate covers the liquid jet channels and has first and second circulation paths that extend in the longitudinal direction of the head chip and communicate with the liquid jet channels to supply liquid thereto. First and second inflow ports are provided at opposite longitudinal ends of the head chip for inflowing liquid into the first and second circulation paths, respectively, so that liquid flows through the first and second circulation paths in opposite directions while being supplied to the liquid jet channels. The sum of pressures of liquid supplied to each liquid jet channel from the first and second circulation paths is uniform throughout the longitudinal direction of the head chip so that high image quality is realized.

Abstract: According to one embodiment, there is provided an ink jet head which includes a pressure chamber which is formed in a thickness direction of a substrate, and fills ink; a vibrating plate which is provided on a first face of the pressure chamber, and includes a nozzle which communicates with the pressure chamber; a driving unit which is provided on the vibrating plate, and includes a piezoelectric substance; and a warpage reducing layer which is provided on a second face which is opposite to the first face of the pressure chamber, and reduces warpage of the substrate.

Abstract: A liquid ejection head includes a channel plate, a diaphragm member, and a piezoelectric member. The channel plate includes a separate liquid chamber, a fluid resistance portion, and a liquid introducing portion. The diaphragm member has a thin layer and a thick layer. The thin layer forms a wall face of each of the separate liquid chamber, the resistance portion, and the introducing portion and includes a vibration area facing the separate liquid chamber. The piezoelectric member is arranged to deform the vibration area and has a portion opposing the introducing portion. The thin layer has a thin portion forming the wall face of the introducing portion. The thick layer has a thick portion formed along the longitudinal direction of the separate liquid chamber on a first face opposite a second face opposing the introducing portion. In a plan view, the thin portion is divided by the thick portion.

Abstract: A method of forming an electrical component is provided. The method comprises preparing a subassembly by electrically connecting an integrated circuit to a flexible circuit; and attaching the subassembly to a multilayer ceramic capacitor having a mounting surface with a curvature deviation exceeding 0.008 inches per inch.

Abstract: According to a liquid ejecting head, it is possible to suppress erosion of a vibrating plate by liquid, suppress generation of variation in a vibrating property, and realize a thin head. The liquid ejecting head includes a flow path formation substrate on which a pressure generation chamber communicating with nozzle openings for discharging liquid is provided, an elastic film which is provided on one surface side of the flow path formation substrate and seals the pressure generation chamber, and a piezoelectric actuator which is a pressure generation unit which is provided on the elastic film to deform the elastic film. A tantalum oxide film which is formed by atomic layer deposition is provided at least on an inner wall of the pressure generation chamber.

Abstract: A liquid ejecting head includes nozzles for ejecting liquid; pressure generation chambers, each in fluid communication with one of the nozzles; and a manifold substrate with manifolds disposed therein. Each manifold supplies liquid to at least one of the pressure generation chambers. The liquid ejecting head also includes a head case with a piezoelectric element housing unit. Piezoelectric elements, for changing pressure of liquid within the pressure generation chambers, are provided in the piezoelectric element housing unit. The liquid ejecting head also includes a vibrating element for absorbing pressure changes in the liquid within the manifolds, cavities provided on the vibrating element at positions that correspond to positions of the manifolds, and an atmosphere exposure channel that fluidly connects one of the cavities to the atmosphere. At least one other one of the cavities is in fluid communication with the atmosphere exposure channel via the first cavity.

Abstract: A droplet discharge head includes a nozzle plate provided with a nozzle opening which discharges an ink drop, an actuator substrate which forms a pressurized liquid chamber communicating with the nozzle opening, and is provided with a pressure generator changing a pressure in the pressured liquid chamber, and a common liquid chamber-forming substrate which forms a common liquid chamber to which ink which is supplied to the pressurized liquid chamber is supplied, the common liquid chamber-forming substrate includes a first plate made of a metal material, a second plate made of a resin material provided on one surface of the first plate, and a third plate made of a resin material provided on the other surface of the first plate, and the first plate, the second plate, and the third plate being integrally molded in a thickness direction.

Abstract: An ink jet printing device includes a pressure chamber, a first actuator membrane being arranged to form a first flexible wall of the pressure chamber, a first piezo-electric part being operatively connected to a surface of the first actuator membrane, a second actuator membrane being arranged to form a second flexible wall of the pressure chamber and a second piezo-electric part being operatively connected to a surface of the second actuator membrane, wherein the second flexible wall is mechanically decoupled from the first flexible wall.

Abstract: A droplet discharging head includes: a nozzle substrate that includes a nozzle opening to discharge a droplet therethrough; a liquid chamber substrate that includes liquid pressure chambers communicating with the nozzle openings; a vibration plate arranged to face the nozzle substrate with the liquid chamber substrate interposed therebetween; piezoelectric elements that are provided to face the liquid pressure chambers with the vibration plate interposed therebetween and are arranged in a predetermined direction; a driving element provided, in a flip-chip implementation, on a flow path substrate that includes the nozzle substrate, the liquid chamber substrate, the vibration plate, and the piezoelectric elements; and a first reinforcing wire that is disposed to at least one of the flow path substrate and the driving element, has a band shape extending in a direction along a row of the piezoelectric elements, and is connected to a common electrode shared by the piezoelectric elements.

Abstract: A piezoelectric actuator includes a vibration plate which is joined to a flow passage unit to cover a pressure chamber formed in the flow passage unit, a piezoelectric layer arranged on the vibration plate, a first electrode arranged on the piezoelectric layer to face the pressure chamber, a second electrode arranged on the piezoelectric layer while being opposed to the first electrode, and a third area arranged in the remaining area of the piezoelectric layer opposed to the pressure chamber. A first portion of the piezoelectric layer interposed by the first and second electrodes is polarized in parallel to the thickness direction. A second portion of the piezoelectric layer disposed between the first and third electrodes in the plane direction, is polarized in parallel to the plane direction. Accordingly, there are provided the piezoelectric actuator having a high driving efficiency.

Abstract: A print head comprises a pressure chamber in fluid communication with a nozzle and an actuator structure in operative communication with the pressure chamber for generating a pressure wave in the pressure chamber. The actuator structure comprises a membrane, wherein a first surface of the membrane forms a flexible wall of the pressure chamber and a piezo actuator, wherein the piezo actuator is arranged on a second surface of the membrane, the second surface being opposite of the first surface, such that the membrane is deformed at the position of the piezo actuator upon actuation of the piezo actuator. In the print head, the membrane is pivotably clamped between a first structure layer and a second structure layer such that the membrane pivots at the location of clamping upon deformation of the membrane due to actuation of the piezo actuator.

Abstract: A liquid application device includes: a liquid discharge head having a structure in which nozzles for performing droplet ejection of a functional liquid onto a substrate are aligned in a row in a predetermined direction, and including liquid chambers connected to the nozzles respectively and piezoelectric elements which are provided correspondingly to the liquid chambers and serve to pressurize the liquid in the liquid chambers; a relative movement unit for causing relative movement between the substrate and the liquid discharge head; and a droplet ejection control unit for operating the piezoelectric elements so as to cause the liquid to land discretely on the substrate, and controlling operation of the piezoelectric elements according to each of groups formed by grouping the nozzles correspondingly to the structure of the liquid discharge head.

Abstract: A piezoelectric actuator includes a cantilever membrane. A thin film sheet is affixed to one side of the cantilever membrane to bend the membrane in multiple directions in response to an electric field induced within the thin film sheet. A plurality of coplanar electrodes disposed on the thin film sheet are interdigitated in relation to one another to generate the electric field during application of a voltage across interdigitated electrodes.

Abstract: A liquid ejecting head includes: a nozzle plate formed with a plurality of nozzle orifices; a drive unit configured to apply pressure vibration to pressure generating chambers communicating to the plurality of nozzle orifices; and a head casing including the drive unit and having a surface opposed to the nozzle plate. The plurality of nozzle orifices defines a first nozzle array group and a second nozzle array group which are staggered, and the surface has a first recess and a second recess which are staggered.

Abstract: A liquid droplet ejecting head is disclosed, including a nozzle hole which ejects liquid droplets; an ejecting liquid chamber which is in communication with outside via the nozzle hole and which contains an ejecting liquid to be the liquid droplets; a pressure generating unit which generates pressure within the ejecting liquid chamber; a temperature detecting unit which detects temperature at a location at which is arranged a temperature measuring resistive body; and a pressure control unit which controls an output of the pressure generating unit based on detected results of the temperature detecting unit, wherein the pressure generating unit is configured to increase pressure within the ejecting liquid chamber, so that the ejecting liquid within the ejecting liquid chamber is ejected from the nozzle hole as the liquid droplets, and wherein the temperature measuring resistive body is arranged at the ejecting liquid chamber forming member.

Abstract: According to one embodiment, an inkjet head includes actuators configured to pressurize ink. The actuators include piezoelectric elements provided on an insulating layer, first electrodes electrically connected to the piezoelectric elements, and second electrodes connected to the piezoelectric elements and configured to hold the piezoelectric elements in cooperation with the first electrodes. The first electrodes of all the actuators are electrically connected to a common first energization pattern. The second electrodes of all the actuators are individually electrically connected to second energization patterns. The first energization pattern and the second energization patterns are separated from each other without overlapping each other on the insulating layer.

Abstract: An actuator includes a vibration plate, a first conductive layer formed on an upper surface of the vibration plate and extending in a predetermined direction, a piezoelectric layer covering the first conductive layer, a second conductive layer formed on an upper surface of the piezoelectric layer, a metal layer formed on the upper surface of the vibration plate and on an upper surface of the second conductive layer, and an electrode electrically connected to the metal layer. The first conductive layer, the second conductive layer, and the piezoelectric layer interposed between the first and second conductive layers form a driving unit. A plurality of the driving units are disposed in a direction perpendicular to the predetermined direction. The metal layer intersects a plurality of the second conductive layers so as to be electrically connect the plurality of second conductive layers.

Abstract: According to one embodiment, an inkjet head includes a substrate, a nozzle plate, and an actuator incorporated in the nozzle plate. The nozzle plate includes a nozzle provided to communicate with an ink pressure chamber, and a vibrating plate exposed to the ink pressure chamber. The actuator displaces the vibrating plate in the thickness direction to pressurize ink in the ink pressure chamber via the vibrating plate and eject the ink from the nozzle. The ink pressure chamber has a first dimension in the thickness direction of the substrate and a second dimension in a direction orthogonal to the thickness direction of the substrate. The first dimension is larger than the second dimension.

Abstract: A liquid ejecting head includes a pressure generation chamber which fluidly communicates with a nozzle opening through which liquid is discharged, a pressure generation unit which causes pressure change on liquid in the pressure generation chamber, a manifold which serves as a liquid chamber common to a plurality of the pressure generation chambers, a flexible film which is configured to cover the manifold so as to absorb a pressure change generated in the manifold, and a heat generation unit which is formed on the flexible film at a region opposed to the manifold and is made of a pattered metal.

Abstract: An ink jet print head can be formed using a laser to melt a plating layer interposed between a piezoelectric actuator and a circuit layer bump. The plating layer can be formed on the circuit layer bump, the piezoelectric actuator, or both, and a laser beam output by the laser is used to melt the plating layer to provide a laser weld. In another embodiment, the circuit layer bump or the trace itself functions as the plating layer, which is melted using a laser to provide the laser weld.

Abstract: A method of forming an actuator includes depositing a photoimageable material to form a first photoimageable layer on a piezoelectric layer; patterning the first photoimageable layer to form an aperture; and disposing a first conductive layer on the first photoimageable layer. An actuator device formed by this method includes the photoimageable material. The first conductive layer partially overlies the first photoimageable layer such that a first portion of the first conductive layer contacts the first photoimageable layer and a second portion of the first conductive layer electrically contacts the piezoelectric layer in the aperture.

Abstract: A liquid application device includes: a liquid discharge head having a structure in which nozzles for performing droplet ejection of a functional liquid onto a substrate are aligned in a row in a predetermined direction, and including liquid chambers connected to the nozzles respectively and piezoelectric elements which are provided correspondingly to the liquid chambers and serve to pressurize the liquid in the liquid chambers; a relative movement unit for causing relative movement between the substrate and the liquid discharge head; and a droplet ejection control unit for operating the piezoelectric elements so as to cause the liquid to land discretely on the substrate, and controlling operation of the piezoelectric elements according to each of groups formed by grouping the nozzles correspondingly to the structure of the liquid discharge head.

Abstract: A method and apparatus for bonding on a silicon substrate are disclosed. An apparatus includes a membrane having a membrane surface, a groove in the membrane surface, a transducer having a transducer surface substantially parallel to the membrane surface, and an adhesive connecting the membrane surface to the transducer surface. The groove can be configured to permit flow of adhesive into and through the groove while minimizing voids or air gaps that could result from incomplete filling of the groove. Multiple grooves can be formed in the membrane surface and can be of uniform depth.

Abstract: A liquid discharge apparatus includes a flow passage structure in which a liquid flow passage including a nozzle for discharging a liquid and a pressure chamber communicated with the nozzle, and a liquid sealing layer for covering the pressure chamber are formed; and a piezoelectric actuator which is arranged to contact with the liquid sealing layer of the flow passage structure. The piezoelectric actuator includes: an actuator substrate, which is arranged on a surface of the liquid sealing layer on a side opposite to the pressure chamber and which has a vibration layer and a columnar portion arranged between the liquid sealing layer and the vibration layer; and a piezoelectric portion which is formed as a film on a surface of the vibration layer disposed on a side opposite to the columnar portion.

Abstract: A liquid-jet head includes: a passage member including a plurality of individual passages and a manifold communicating commonly with the individual passages, the individual passages each having a pressure generating chamber communicating with a nozzle orifice that ejects liquid, the pressure generating chambers being formed on one surface side of the passage member on an opposite side from the nozzle orifices, the individual passages and the manifold communicating with each other through communicating paths, and each adjacent two of the individual passages communicating with each other through the corresponding communicating path; and reinforcement walls each provided between the communicating paths in a parallel direction of the individual passages, the reinforcement walls defining the communicating paths.

Abstract: A liquid droplet ejecting method for ejecting a liquid from at least one ejection hole to form the liquid into liquid droplets, the method including: applying a vibration to the liquid in a liquid column resonance-generating liquid chamber, in which the ejection hole is formed, to form a standing wave through liquid column resonance, and ejecting the liquid from the ejection hole, which is formed in a region corresponding to an antinode of the standing wave, to form the liquid into liquid droplets.

Abstract: A nozzle portion in a recording head includes a first nozzle portion of which cross-sectional area is a first area and which is formed at the side of a pressure generation chamber and a second nozzle portion of which cross-sectional area is a second area which is smaller than the first area, which is formed to be continuous to the first nozzle portion through a step portion and of which front end portion is a nozzle opening. Further, when a cross-sectional area of an ink supply path is set to Ss, a cross-sectional area of the first nozzle portion is set to Sn, a flow path resistance of the first nozzle portion is set to Rn?, and a flow path resistance of the second nozzle portion is set to Rn, relationships of Sn/Ss?1/3 and Rn?/Rn?0.6 are satisfied.

Abstract: A piezoelectric thin film element includes a substrate, a vibration plate provided on the substrate, a lower electrode provided on the vibration plate, the lower electrode including at least a platinum metal film or an iridium metal film, a piezoelectric film provided on the lower electrode, the piezoelectric film including a polycrystalline body, and an upper electrode provided on the piezoelectric film, the lower electrode being provided on an upper portion of a titanium oxide film formed on the vibration plate, the lower electrode including a platinum metal film or an iridium metal film formed on the titanium oxide film and conductive oxide formed on the platinum metal film or the iridium metal film, and the platinum metal film or the iridium metal film being a precise film.

Abstract: A liquid ejecting head includes a passage-forming substrate provided with a pressure-generating chamber communicating with a nozzle orifice for ejecting a liquid and includes a piezoelectric element including a diaphragm disposed on the passage-forming substrate, a first electrode disposed on the diaphragm, a piezoelectric layer disposed on the first electrode, and second electrode disposed on the piezoelectric layer. The diaphragm includes a metal oxide layer of a metal oxide formed by a gas-phase method and a zirconium oxide layer of zirconium oxide formed by a liquid-phase method.

Abstract: A liquid ejecting head includes a flow path formation substrate provided with a pressure generation chamber communicated with at least one nozzle opening through which liquid is ejected; and an actuator apparatus including a vibration plate provided at one face side of the flow path formation substrate and a plurality of piezoelectric elements being formed on the vibration plate. The actuator apparatus includes two first piezoelectric elements arranged at positions facing edge portions in at least one direction of the pressure generation chamber and a second piezoelectric element arranged between the two first piezoelectric elements.

Abstract: A piezoelectric actuator is provided, including a vibration plate, a piezoelectric layer, a plurality of individual electrodes arranged in two arrays, first and second common electrodes which have first and second facing portions facing parts of the individual electrodes and first and second connecting portions connecting the first and second facing portions respectively, and first and second wiring portions which are arranged on the vibration plate and which are connected to the first and second common electrodes respectively via first and second connecting wirings, wherein one of the first connecting wirings connects the first connecting portion and one of the first wiring portion while striding over the second connecting portion.

Abstract: 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.

Abstract: An ink jet head includes a chamber unit including a pressure chamber formed to hold ink, and a nozzle plate unit. The nozzle plate includes a vibrating plate forming a bottom wall of the pressure chamber, a driving element that is provided on a bottom surface of the vibrating plate and configured to cause a volume of the pressure chamber to be changed by deforming the vibrating plate upon application of voltage to the driving element, and a protective layer disposed on a bottom surface of the vibrating plate and a bottom surface of the driving element. The protective layer has a first thickness between a bottom surface thereof and the bottom surface of the vibrating plate and second thickness between a bottom surface thereof and the bottom surface of the driving element, and the first thickness is greater than the second thickness.

Abstract: An ink jet head includes a pressure chamber formed to hold ink, and a nozzle plate including a vibrating plate forming a bottom wall of the pressure chamber, a driving element that is provided on a surface of the vibrating plate and configured to cause a volume of the pressure chamber to be changed by deforming the vibrating plate upon application of voltage to the driving element, an opening through which the ink held in the pressure chamber is discharged in response to the change of the volume of the pressure chamber, and an insulating layer disposed between the driving element and the opening.

Abstract: A process for making a substantially planar micro-fluid ejection head is disclosed, and includes depositing a basic solution on a first surface of a device substrate. The first surface having the basic solution deposited thereon is contacted together with a surface of a support material for a duration ranging from about 1 minute to about 15 minutes, at a temperature ranging from about 20° C. to about 90° C. so that the first surface having the basic solution deposited thereon and the surface of the support material form a bond therebetween to hermetically seal the support material and the device substrate to one another. Both the substrate and the at least one surface of the support comprise silicon, and at least one of the device substrate and the at least one surface of the support material is substantially composed of silicon.

Abstract: 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.

Abstract: A fluid ejector includes a fluid ejection module having a substrate and a layer separate from the substrate. The substrate includes a plurality of fluid ejection elements arranged in a matrix, each fluid ejection element configured to cause a fluid to be ejected from a nozzle. The layer separate from the substrate includes a plurality of electrical connections, each electrical connection adjacent to a corresponding fluid ejection element.

Abstract: 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.

Abstract: An inkjet printer head includes: a semiconductor substrate; a vibration diaphragm provided on the semiconductor substrate and capable of vibrating in an opposing direction in which the vibration diaphragm is opposed to the semiconductor substrate; a piezoelectric element provided on the vibration diaphragm; a pressure chamber provided on a side of the vibration diaphragm adjacent to the semiconductor substrate as facing the vibration diaphragm, the pressure chamber being filled with an ink; and a nozzle extending through the vibration diaphragm and communicating with the pressure chamber for ejecting the ink supplied from the pressure chamber.

Abstract: In a liquid drop ejecting head including a diaphragm, a channel member, and a nozzle plate which are laminated in this order, interface surfaces of the channel member and the diaphragm are bonded by an adhesive. The diaphragm is formed to have a laminated structure in which the number of lamination layers is varied at different locations. The diaphragm includes an opening and a filter part, the filter part having plural filtering holes formed in the opening for supplying a liquid to pressurizing liquid chambers of the channel member. A side wall of the channel member disposed to contact or located in a vicinity of the filter part, and a thick-walled portion containing the largest number of lamination layers in the diaphragm do not overlap with each other in a laminating direction.

Abstract: According to one embodiment, an inkjet head includes a substrate, a nozzle plate, and an actuator incorporated in the nozzle plate. The nozzle plate includes a nozzle provided to communicate with an ink pressure chamber, and a vibrating plate exposed to the ink pressure chamber. The actuator displaces the vibrating plate in the thickness direction to pressurize ink in the ink pressure chamber via the vibrating plate and eject the ink from the nozzle. The ink pressure chamber has a first dimension in the thickness direction of the substrate and a second dimension in a direction orthogonal to the thickness direction of the substrate. The first dimension is larger than the second dimension.

Abstract: A liquid ejection head includes a channel plate, a diaphragm member, and a piezoelectric member. The channel plate includes a separate liquid chamber, a fluid resistance portion, and a liquid introducing portion. The diaphragm member has a thin layer and a thick layer. The thin layer forms a wall face of each of the separate liquid chamber, the resistance portion, and the introducing portion and includes a vibration area facing the separate liquid chamber. The piezoelectric member is arranged to deform the vibration area and has a portion opposing the introducing portion. The thin layer has a thin portion forming the wall face of the introducing portion. The thick layer has a thick portion formed along the longitudinal direction of the separate liquid chamber on a first face opposite a second face opposing the introducing portion. In a plan view, the thin portion is divided by the thick portion.

Abstract: There is provided a liquid jetting apparatus which includes: a liquid jetting head including a channel unit and a piezoelectric actuator, an elastic deformation layer arranged on the piezoelectric actuator, a plurality of head-side contact points arranged on the elastic deformation layer, a substrate arranged to face a surface of the liquid jetting head, a plurality of substrate-side contact points arranged on the substrate, and a fixing member fixing the liquid jetting head and the substrate. When the fixing member fixes the liquid jetting head and the substrate, a portion of the elastic deformation layer, on which the head-side contact points are arranged, is sandwiched by the piezoelectric actuator and the substrate to undergo elastic deformation. The elastic deformation layer is configured to press the plurality of head-side contact points onto the substrate-side contact points by a force arising from a tendency to restore a state before elastic deformation.

Abstract: A printhead includes a moveable membrane, a piezoelectric actuator to move the membrane, and electronic circuitry disposed on the moveable membrane. A method of fabricating a printhead includes fabricating CMOS circuitry on a first side of a circuit wafer, and forming a chamber in a second side of the circuit wafer such that a bottom of the chamber forms a moveable membrane and the CMOS circuitry is disposed on the moveable membrane opposite the bottom of the chamber. A printing system includes a printhead having CMOS circuitry formed on a first side of a moveable membrane, a chamber having a bottom comprising a second side of the moveable membrane, and a piezoelectric actuator formed over the CMOS circuitry, configured to cause displacement of the moveable membrane into the chamber.

Abstract: Disclosed is an inkjet head that includes individual liquid chambers having liquid droplet discharging holes; an oscillation plate; piezoelectric elements formed by laminating a lower electrode, a piezoelectric material, and upper electrodes on the oscillation plate, wherein the lower electrode is a common electrode and the upper electrode is an individual electrode; a common electrode wiring connected to the lower electrode; and individual electrode wirings connected to the corresponding upper electrodes of the piezoelectric elements, wherein driving signals are individually input to the corresponding individual electrode wirings. The inkjet head further includes an upper layer insulator film; an intermediate layer insulator film; and a lower layer insulator film. The intermediate layer insulator film and the upper layer insulator film have openings for exposing the piezoelectric elements.