Abstract: A method is provided for manufacturing a liquid supply member including a transmissive member and a transmissive member, one of which having a groove, and configured to supply liquid to a liquid ejection port. The method includes bringing the transmissive member and the absorptive member into contact, with the groove inside; forming a supply passage by radiating laser light, via the transmissive member, from a plurality of first laser light sources disposed along a longitudinal direction of the groove toward a first contact portion at a periphery of the groove to weld the transmissive member and the absorptive member; and radiating laser light, via the transmissive member, from a second laser light source provided in a vicinity of a laser light source at an end of the groove in the longitudinal direction toward a vicinity portion of the absorptive member.

Abstract: An inkjet printhead includes a die having a heating element formed thereon. The inkjet printhead also includes a graded die carrier. The graded die carrier is coupled to the die. The graded die carrier has lands that are separated by an ink slot. Each of the lands is graded such that its proximity to the die varies.

Abstract: A liquid ejection head and a method of forming the same. The liquid ejection head includes a substrate, an ejection port, a liquid channel, and a supply port. The substrate has, above one side thereof, an energy generating element configured to generate energy used to eject liquid. The ejection port, from which a liquid is ejected, is located at a position corresponding to the energy generating element. The liquid channel communicates with the ejection port and penetrates the substrate from the one side to another side of the substrate. The supply port communicates with the liquid channel. The substrate has a projecting layer extending inward of an inner peripheral portion of an opening in the supply port in the one side, and the projecting layer and the energy generating element are formed of the same material.

Abstract: A heater chip has a substrate and at least one die, made of silicon, and a bond non-adhesively attaching them. The substrate, thick enough to resist bowing, has ink supply vias from back to front surfaces. The die has ink flow vias from back to front surfaces and circuitry including heater elements adjacent the front surface interspersed with ink flow vias. The at least one die is superimposed on the substrate such that ink supply vias of the substrate align with ink flow vias of the die and portions of substrate front surface and die back surface are aligned, disposed adjacent and facing one another. The bond formed between substrate and die facing surface portions is hermetic and equal in strength to a Si—O bond. By separate processing of carrier and device wafers, size and features of substrate and die can be tailored to provide a desired heater chip construction.

Abstract: A composite ceramic substrate for receiving an ejection head chip for a micro-fluid ejection head and a method for making the composite ceramic substrate. The substrate includes a high temperature previously fired ceramic base having a substantially planarized first surface and at least one fluid supply slot therethrough. A low temperature co-fired ceramic (LTCC) tape layer bundle having at least two LTCC tape layers is attached to the ceramic base at an interface between the LTCC tape layer bundle and the first surface of the ceramic base. The LTTC tape layer bundle has at least one chip pocket therein and at least one of the LTCC tape layers includes a plurality of conductors.

Abstract: A fluid-ejection assembly includes a die, a substrate, ribs, and adhesive. The die has nozzles through which fluid is ejected. The substrate provides the fluid to the die. The ribs are within the substrate, and have rounded corners. The rounded corners are adapted to provide a predetermined characteristic. The adhesive affixes the die to the substrate.

Abstract: A liquid discharge head includes a plurality of liquid chambers for pressurizing a liquid, the plurality of liquid chambers communicating with discharge ports respectively; and a plurality of piezoelectric elements provided in correspondence with the plurality of liquid chambers, respectively, the plurality of piezoelectric elements each including a lower electrode, a piezoelectric body film, and an upper electrode which are sequentially laminated in the stated order from the plurality of liquid chambers side. The lower electrode is provided up to a region corresponding to a portion between the plurality of liquid chambers. The piezoelectric body film is reduced in thickness at the region corresponding to the portion between the plurality of liquid chambers relative to the thickness of a region corresponding to the plurality of liquid chambers and completely covers at least the lower electrode provided to the region corresponding to the portion between the plurality of liquid chambers.

Abstract: Micro-fluid ejection devices, methods for making micro-fluid ejection heads, and micro-fluid ejection heads, including a micro-fluid ejection head. One such micro-fluid ejection head has relatively high resistance thin film heaters adjacent to a substrate. The thin film material comprises silicon, metal, and carbon (SiMC wherein M is a metal). Each thin film heater has a sheet resistance ranging from about 100 to about 600 ohms per square and a thickness ranging from about 100 to about 800 Angstroms.

Abstract: A micro-fluid ejection head structure and a method for assembling a micro-fluid ejection head structure. The micro-fluid ejection head structure includes a molded, non-fibrous wicking and filtration structure. The wicking and filtration structure is fixedly attached to a filtered fluid reservoir of the micro-fluid ejection head structure for flow of filtered fluid to a micro-fluid ejection head attached to the head structure.

Abstract: A method of fabricating an inkjet printhead is provided in which a supporting substrate is provided, a conductive layer is deposited and patterned on one side of the supporting substrate, an insulating layer is deposited on the conductive layer, holes are etched through the insulating layer to the conductive layer, metal is deposited in the holes to form metallic vias, an outer surface of the insulating layer and one end of each of the metallic vias are planarized, and a layer of heater material is deposited and patterned on the outer surface to form a heater with a resistive element extending between a pair of contacts. The metallic vias electrically connect the contacts to the conductive layer.

Abstract: A method of manufacturing an ink jet recording head includes the steps of: forming an adhesive layers and the side walls of a flow path on a substrate; pasting a dry film, which is a part of a flow path forming member, on the side walls; and forming discharge ports in the layer.

Abstract: A method for manufacturing an inkjet head is disclosed. The method for manufacturing an inkjet head can include preparing a head body including a vibrating membrane, which is located in an upper portion of the head body, coating a lower electrode over the vibrating membrane, patterning a resist such that an open area is formed over the vibrating membrane, filling a piezoelectric material in the open area, selectively coating an upper electrode over the piezoelectric material, and removing the resist.

Abstract: A method of forming a hydrophobic coating layer on a surface of a nozzle plate of an inkjet printhead includes forming a plurality of nozzles in the nozzle plate, each of the nozzles having an exit, stacking a film on the surface of the nozzle plate to cover the exit of each of the nozzles, forming a predetermined metal layer on an inner wall of each of the nozzles and an inner surface of the film covering the exit of each of the nozzles using a plating method, removing the film from the surface of the nozzle plate, forming a hydrophobic coating layer on the surface of the nozzle plate to cover the metal layer exposed through the exit of each of the nozzles, and removing the metal layer formed on the inner wall of each of the nozzles and the hydrophobic coating layer formed on the surface of the metal layer.

Abstract: The invention provides a method of producing a liquid ejecting head unit that has a plurality of liquid ejecting heads combined with one another. Each of the plurality of liquid ejecting heads has a fluid channel formation substrate, which has pressure generation chambers that are in communication with nozzle orifices through which liquid is ejected, and piezoelectric elements, each of which is made up of a lower electrode, a piezoelectric layer that has hysteresis characteristic in a polarization electric field, and an upper electrode, formed on the fluid channel formation substrate with a vibrating plate being interposed therebetween. The liquid ejecting head unit production method according to an aspect of the invention includes: acquiring coercive electric fields of the piezoelectric layers of the liquid ejecting heads; classifying the liquid ejecting heads into ranks on the basis of the acquired coercive electric fields; and combining the liquid ejecting heads that belong to the same rank together.

Abstract: A fluidic assembly method includes dispersing a number of functional blocks in a fluid to form a slurry. Each of the functional blocks includes at least one element and a patterned magnetic film comprising at least one region. The fluidic assembly method further includes immersing at least a portion of an article in the fluid. The article includes a substrate, a number of receptor sites disposed on the substrate and a number of magnetic receptors, each of the magnetic receptors being disposed within a respective one of the receptor sites. A method of manufacturing an assembly includes disposing a number of functional blocks over at least a portion of an article, agitating the functional blocks relative to the article and assembling at least a subset of the functional blocks to the magnetic receptors on the article.

Abstract: A method of determining a healthy fluid ejection nozzle includes measuring changes in impedance across the nozzle as fluid passes through it. A printhead includes a metal probe that intersects an ink nozzle and an integrated circuit to sense a change in impedance across the nozzle through the metal probe.

Abstract: The present invention relates to a fluid ejection assembly that includes an injection-molded mounting substrate that is formed by a two-shot injection molding process, wherein a housing portion of the mounting substrate is formed by a first shot molding, and a die-attach portion of the mounting substrate is formed within the housing portion by a second shot molding. The die-attach portion is made of a material having a low coefficient of thermal expansion along a direction that is parallel to a fluid passageway in the die attach portion.

Abstract: 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.

Abstract: A nozzle unit having a nozzle, a flow channel unit having a pressure chamber and a through hole to be communicated with the pressure chamber and an actuator for causing the pressure chamber to discharge ink are respectively formed. The nozzle unit and the actuator have substantially the same planar dimensions. In the nozzle unit, a spacer plate having a communicating hole penetrating in the plate thickness direction corresponding to the nozzle is preliminarily bonded with the first plate, which is to be the nozzle plate, and the nozzle is formed at the first plate material through the communicating hole with laser. The nozzle unit and the actuator which have been respectively formed are bonded with the flow channel unit at positions facing each other simultaneously.

Abstract: Printing plates, printing system and method for printing electrical circuits. According to embodiments of the invention, patterned layers of conductive, insulating, semi-conductive materials, and other materials can be additively print deposited on a substrate to form electrical circuits. The electrical circuits so formed of single or multiple printed layers can comprise or compose transistor devices, including thin film transistors, multiple transistor circuits or assemblies, or other electrical devices, for example batteries, sensors, displays, memory arrays, and the like. The invention further provides a patterned printing plate imaged by a photolithography and etch process, and a printing system and methods using the patterned plate by which such high resolution, precise registration electrical circuits and circuit devices can be produced.

Abstract: A liquid ejection head includes a piezoelectric actuator that changes volume of a pressure chamber to cause liquid in the pressure chamber to eject from a nozzle connected with the pressure chamber, wherein the piezoelectric actuator is formed into a projecting shape protruding toward the pressure chamber, and displaced in a direction opposite to the pressure chamber when applied with a driving voltage, to increase the volume of the pressure chamber.

Abstract: A fluid spray head comprising an expulsion channel provided with a spray orifice (1) and a spray profile (10) formed in an end wall of said expulsion channel, said spray profile (10) comprising non-radial spray channels (11) opening out to a central spray chamber (12) disposed directly upstream from said spray orifice (1), the central axis (X) of said spray orifice (1) being offset from the central axis (Y) of the spray chamber (12) by a distance that is less than 0.12 mm, and preferably less than 0.08 mm.

Abstract: A liquid ejection head is disclosed. The liquid ejection includes a flow channel plate, the flow channel plate being formed from one thin plate, the flow channel plate being formed with one or more pressure generating chambers, a fluid resistance section which supplies liquid to the pressure generating chamber, and a nozzle hole which opposes the pressure generating chamber. The flow channel plate is made of a metal material, and wherein the flow plate includes the pressure generating chamber which is formed of a groove-shaped indentation; the nozzle hole which is formed at one end in a longitudinal direction of the groove-shaped indentation; and the fluid resistance section which is formed at the other end in the longitudinal direction of the groove-shaped indentation. The pressure generating chamber, the nozzle head, and the fluid resistance section are formed such that they deform the thin plate in a thickness direction.

Abstract: An ink jet recording head includes a substrate provided with an energy generating element to generate energy used for discharging ink, a discharge port through which the ink is discharged, a supply port for supplying the ink, and an ink path formed on the substrate for making the discharge port and the supply port communicate with each other, wherein wall members forming the ink path are made of an inorganic material, and a space between adjacent ink paths is filled up by a metal layer.

Abstract: A head main body includes a passage unit having nozzles and pressure chambers, and an actuator unit adhered to the passage unit to change the volume of the pressure chambers. On a piezoelectric sheet of the actuator unit, formed are not only individual electrodes corresponding to the respective pressure chambers, but also a land and a dummy land in a pair corresponding to each of the individual electrodes. The land is connected to the individual electrode, and the dummy land is spaced from the individual electrode. The land and the dummy land have substantially the same height from a surface of the piezoelectric sheet, which is higher than that of the individual electrodes. The individual electrodes are connected, through the land, to a cable member to supply a drive signal to the actuator unit.

Abstract: A method for manufacturing a fluid ejecting head includes providing a channel unit including a vibrating plate having nozzle openings through which fluid is ejected and a pressure chamber that communicates with the nozzle openings. A piezoelectric unit includes a piezoelectric element that vibrates the vibrating plate of the channel unit and which includes a securing plate which secures the piezoelectric element. A head case having a housing chamber houses the piezoelectric unit which is pressed against the vibrating plate in a housing direction such that a portion of the piezoelectric unit is also pressed against a sidewall of the housing chamber. The piezoelectric element is secured directly the vibrating plate and the securing plate is secured directly to head case using a bonding process which is performed while the piezoelectric unit is being pressed against the vibrating plate and the sidewall.

Abstract: A liquid ejecting apparatus includes liquid ejecting heads, each ejecting a liquid from a nozzle by driving a pressurizing unit that causes the volume of a pressure chamber that communicates with the nozzle to change. A driving pulse generation unit generates driving pulses that drive the respective pressurizing units. A controller controls the ejection of the liquids by the liquid ejecting heads. Each driving pulse includes an ejection element that causes the pressure chamber to constrict, thereby ejecting liquid from the nozzle, and a retraction element that retracts a meniscus at the nozzle toward the pressure chamber by causing the pressure chamber constricted by the ejection element to expand. The controller sets the ending potential of the retraction element on the liquid ejecting head-by-liquid ejecting head basis so that the shapes of dots formed on a ejection target are made uniform throughout the liquid ejecting heads.

Abstract: A liquid discharge head of the present invention comprises a substrate and a flow path wall member provided on the substrate and having a wall of a flow path communicated with a discharge port for discharging liquid, wherein said flow path wall member is provided with a cavity not communicated with said flow path, when viewed in a direction from said discharge port toward said substrate, said cavity has a shape of a character, and said character corresponds to information regarding said liquid discharge head.

Abstract: An atomizing device, includes an atomizing body (1) with an inlet (16) for receiving a fluid under increased pressure, and with at least one set of outflow ports (18) for allowing the fluid to escape on a delivery side with forming of a vapour. Imaginary central axes of the outflow ports directed in a flow direction herein enclose a mutual angle (?) in order to intersect each other at an intersection (S). The atomizing body includes a roof (21) and a bottom (11 which extend over at least a first distance (d1) beyond the set of outflow ports (18) and bound a vaporizing space (17) on either side. The intersection (S) of the imaginary central axes of the outflow ports lies at a second distance (d2) from the set of outflow ports, wherein the second distance (d2) is greater than the first distance (d1) and extends beyond the vaporizing space.

Abstract: A method of manufacturing an inkjet print head that includes an improved process of forming an ink feed hole, thereby enabling an increase in productivity and a favorable ink supply via the ink feed hole. The method includes preparing a substrate on which a heater to heat an ink is formed on the front side thereof, forming a flow passage formation layer on the front side of the substrate such that the flow passage formation layer defines an ink flow passage, forming a nozzle layer provided with a nozzle on the flow passage formation layer, forming a first protective layer such that the first protective layer covers the flow passage formation layer and the nozzle layer, applying a mask material used to etch the substrate to the rear side of the substrate, applying a second protective layer to the lateral side of the substrate to protect the lateral side of the substrate, and forming an ink feed hole on the substrate by wet etching. Tantalum (Ta) is used as the mask material.

Abstract: A method for manufacturing a liquid discharge head includes heating the surface portion of power line that is to be in contact with a member made of resin, thereby forming, from a precious metal layer and a nickel layer, an adhesion layer made of an alloy containing precious metal and nickel as major components.

Abstract: An inkjet head according to an aspect of the invention may include: a flow path plate having a plurality of ink chambers; a nozzle plate having a plurality of nozzles connected to the ink chambers in order to eject ink in the ink chambers to the outside; and a temperature control unit having a heat exchange passage in at least one of the flow path plate and the nozzle plate in order to control temperature of the ink.

Abstract: A method of forming a multi-lobed nozzle in a nozzle plate. A mask may be used to pattern photoresist on the nozzle plate or for patterning a polymer dry film, for example, which is then used for etching the plate to form multi-lobed nozzles. The formed nozzle plate is disposed over a substrate having a chamber for fluid formed therein and the chamber may include walls for supporting the nozzle plate. The fluid chamber includes a heater over the substrate for ejecting fluid through the nozzle via rapid heating of the fluid. Continuous supply of fluid is provided by forming a fluid supply channel in communication with the fluid chamber.

Abstract: A method of manufacturing a nozzle plate, that includes: forming a nozzle by selectively etching one side of a plate substrate; forming a straight portion connecting with the nozzle by selectively etching the other side of the plate substrate; and forming a hydrophobic layer on the one side of the plate substrate, wherein the hydrophobic layer has a window formed therein, the window opening the nozzle by a circumference greater than a circumference of an end of the nozzle.

Abstract: A method of processing a liquid discharge head substrate includes the step of providing the substrate, and the step of providing a recessed portion at a back surface of the substrate by discharging liquid in a linear form to the back surface of the substrate, and by processing the back surface of the substrate with laser light that has passed along the liquid and in the liquid.

Abstract: An inkjet head includes a channel unit and actuator units. Inside the channel unit, individual ink channels are formed so that ink supplied from ink inlets is ejected from nozzles via pressure chambers. The actuator units are bonded to the upper surface of the channel unit. The actuator units have a configuration of four piezoelectric sheets laminated to one another. On the upper surface of the piezoelectric sheet, individual electrodes are disposed in positions opposed to the pressure chambers respectively. A FPC for supplying driving signals to the actuator units is connected to the individual electrodes.

Abstract: In a step of forming a piezoelectric precursor film, an application solution is applied onto each of flow passage forming substrate wafers to form piezoelectric precursor films one by one on each of the plurality of flow passage forming substrate wafers constituting a flow passage forming substrate wafer group, and an order of the flow passage forming substrate wafers for starting the application of the application solution to be turned into each of the piezoelectric precursor films is varied by the predetermined number of wafers of the flow passage forming substrate wafer group.

Abstract: 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.

Abstract: There is provided a method of manufacturing a liquid ejecting head which includes a head main body having nozzles ejecting a liquid supplied via a liquid supply passage, a first supply member having a first liquid supply passage forming a part of the liquid supply passage, a second supply member disposed on a downstream side of the first supply member and having a second liquid supply passage communicating with the first liquid supply passage and forming a part of the liquid supply passage, a filter disposed between the first and second supply members so as to cross the liquid supply passage, and an integrally molded member fixing the first and second supply members by a resin in a state where the filter is nipped between the first and second supply members.

Abstract: A method for producing an ink-jet head includes forming a buffer layer on an upper surface of a vibration plate, and forming a piezoelectric precursor layer on an entire upper surface of a surface layer, the piezoelectric precursor layer being converted into a piezoelectric sheet. The buffer layer is formed of a material with which mutual diffusion between the piezoelectric precursor layer and the buffer layer is hardly caused as compared with mutual diffusion between the piezoelectric precursor layer and the vibration plate with which no buffer layer is provided. A stack, in which the buffer layer and the piezoelectric precursor layer are formed, is heated at a predetermined temperature, and the piezoelectric precursor layer is calcinated to form the piezoelectric sheet. It is possible to suppress the deterioration of the performance of the piezoelectric member.

Abstract: An inkjet head, comprising: a pressure chamber which are arranged two-dimensionally, and deformed by pressure generating unit and discharging ink from nozzles communicated with the pressure chamber; and a piezoelectric element which is included in the pressure generating unit, said piezoelectric element including a thin film piezoelectric element formed by means of a thin film forming technique.

Abstract: A method of manufacturing an actuator device includes forming a Zr layer on one surface of a substrate, forming a ZrO2 layer by oxidizing the Zr layer, forming a lower electrode on top of the ZrO2 layer, forming a piezoelectric layer on top of the lower electrode, and forming an upper electrode on top of the piezoelectric layer. In the method, in forming the Zr layer, the Zr layer is formed through crystal growth of Zr, and the Zr layer thus formed has special crystal regions that protrude from the opposite surface of the Zr layer from the substrate. Each special crystal region has a height of 10 to 100 nm and a diameter of 0.1 to 1 ?m when viewed from above, and the special crystal regions exist with a density of 1.0×106 to 1.0×103/cm2.

Abstract: The invention provides for a method of attaching printhead integrated circuitry to a carrier. The method includes scanning a wafer having a number of circuitry dies formed thereon to demarcate respective dies, aligning a die picker with a dice on the wafer according to a wafer substrate mapping scheme, and removing the dice from the wafer with the die picker. The method further includes the steps of transporting the dice to a placement station operatively positioning the carrier, aligning the dice with the carrier; and heat bonding the dice to the carrier.

Abstract: A method for connecting a flexible printed circuit board (PCB) to a printhead assembly that includes a printhead carrier and an ink ejection printhead carried by the carrier.

Abstract: An inkjet head includes a recording element substrate for discharging ink, a supply port penetrating the recording element substrate and serving as an ink flow path, a protrusion formed at a position surrounding the supply port, projecting from one surface of the recording element substrate, and having a first metal layer at a distal end, and a supporting member having a second metal layer welded with the first metal layer and supporting the recording element substrate.

Abstract: A printing device (10) including a substrate (22) having an aperture (20) extending therethrough, wherein the aperture includes a side wall and defines a liquid ink flow path, an ink firing chamber (24) fluidically connected to the aperture, and a coating positioned on the side wall of the aperture, the coating being impervious to etching by liquid ink, and wherein the coating is chosen from one of silicon dioxide, aluminum oxide, hafnium oxide and silicon nitride.

Abstract: An ink-jet recording head has a plate-shaped member including a first layer with a partition wall formed by a first etching process and defining a pressure chamber, an ink inlet passage and a common ink storage chamber, a second layer with a land formed by a second etching process so as to correspond to the pressure chamber, and an intermediate layer sandwiched between the first and the second layers. The recording head also has a pressure producing device disposed with its extremity in contact with the land, and a nozzle plate with a nozzle hole bonded to the front surface of the plate-shaped member. An ink particle is jetted through the nozzle hole when the pressure in the pressure chamber is changed by the pressure producing device.

Abstract: A liquid droplet jetting apparatus includes: a liquid droplet jetting head which jets liquid droplets when an actuator is driven; and a wiring member via which a drive signal is outputted to a surface electrode formed in the actuator. The wiring member includes a substrate, a wire provided on the substrate, and a covering member having an insulating property and covering the wire. The wire has an electrode land which is stacked on the surface electrode to be connected to the surface electrode, and the covering member has a first covering layer in which a first opening to expose the electrode land therein is formed and a second covering layer having a second opening communicating with the first opening and covering the first covering layer. The surface electrode and the electrode land are connected in a state that an electroconductive material is interposed therebetween through the first and second openings.

Abstract: A method of fabricating an inkjet nozzle assembly having a seal member bridging between a moving portion and a stationary portion. The method includes the steps of: (a) providing a partially-fabricated printhead comprising a nozzle chamber sealed with a roof, (b) etching a via through the roof to define the moving portion on a first side of the via and the stationary portion on a second side of the via; (c) plugging the via with a plug of sacrificial material; (d) depositing a layer of flexible material over the plug; and (e) removing the plug to provide the inkjet nozzle assembly. The resultant seal member is comprised of the flexible material.

Abstract: A method of preparing a surface of a counterbore surrounding an orifice in an orifice layer includes determining a property of a fluid to be ejected through the orifice, and controlling a surface characteristic of the counterbore surface based on the property of the fluid.