Abstract: Long-term reliability of a liquid ejection head substrate and a liquid ejection head is improved by suppressing dissolution of an intermediate layer due to anodization. A liquid ejection head substrate including: a flow passage forming member having an ejection orifice and a flow passage; a heating resistance element for ejecting a liquid; an insulating layer covering the heating resistance element; a protecting layer whose surface is exposed to the flow passage; and an intermediate layer provided between the flow passage forming member and the protecting layer, in which the intermediate layer contains a material represented by a following composition formula (I): Siw1Ox1Cy1 (I), 39?w1?62 (at. %), 32?x1?55 (at. %), and 6?y1?29 (at. %), and w1+x1+y1=100 (at %).

Abstract: A liquid discharge head includes multiple nozzles arrayed in two-dimensional matrix, the multiple nozzles configured to discharge a liquid, multiple pressure chambers respectively communicating with the multiple nozzles, multiple common-supply branch channels, each communicating with the multiple pressure chambers, multiple common-collection branch channels, each communicating with the multiple pressure chambers, the multiple common-collection branch channels respectively communicating with the multiple common-supply branch channels through the multiple pressure chambers, a common-supply main channel communicating with each of the multiple common-supply branch channels, a common-collection main channel communicating with each of the multiple common-collection branch channels, and two or more bypass channels communicating with the multiple common-supply branch channels and the multiple common-collection branch channels.

Abstract: An aqueous ink jet ink composition according to the present embodiment is an aqueous ink jet ink composition for use in an ink jet recording method that includes ejecting ink from an ink jet head. The ink jet head includes nozzles that have a side wall surface, and the side wall surface has a scalloped shape in which a scallop width S1 and a notch depth S2 satisfy S1/S2?4. The aqueous ink jet ink composition includes a self-dispersed pigment and a solvent that includes a compound represented by formula (1) below. R1—O—R2—OH??(1) In formula (1), R1 represents a hydrogen atom, a methyl group, or an ethyl group, and R2 represents a divalent saturated hydrocarbon group having 5 or fewer carbon atoms or represents a group represented by formula (2) below. R3—O—R4??(2) In formula (2), R3 and R4 each independently represent a divalent saturated hydrocarbon group having 2 or 3 carbon atoms.

Abstract: A heating device includes a first heat member and a second heat member. The first heat member is configured to heat a sheet on a liquid applied face. The second heat member is configured to heat the sheet on an opposite face opposite the liquid applied face of the sheet. A temperature of the second heat member to heat the sheet is higher than a temperature of the first heat member to heat the sheet.

Abstract: A digital printing system includes a track and a plurality of print heads, wherein the system is configured to index a plurality of containers to or through a plurality of process locations. In embodiments, the track is configured to convey a plurality of containers to or through the plurality of process locations, and the plurality of print heads are configured for digital printing on the plurality of containers.

Abstract: An example device includes a droplet ejector including a nozzle to eject droplets of a fluid and a target medium to receive the droplets of the fluid. The target medium is separated from the droplet ejector by a gap to be traversed by the droplets. The example device further includes a frame affixing the target medium to the droplet ejector. The target medium is immovably held with respect to the droplet ejector.

Abstract: A liquid discharge head includes a first substrate in which a nozzle is formed, a second substrate disposed above the first substrate, an energy generation element that generates energy for discharging a liquid by a drive signal being applied, and a vibration plate that vibrates by the energy generated by the energy generation element and that is stacked on the second substrate, in which the vibration plate has a first area and a second area positioned at a position different from the first area and having a lower elastic modulus than an elastic modulus of the first area.

Abstract: Printheads and methods for forming printheads are described herein. In one example, a printhead includes a single resistor window in a conducting layer within the printhead. The printhead also includes a number of resistors formed in a resistor film deposited over the single resistor window. The resistors have two different widths, and each of the two different widths ejects a different droplet size when energized.

Abstract: According to one embodiment, an ink jet head includes: a cover including an opening; a flexible cable extending from the opening toward an outside of the cover and having a rigidity lower than the cover; a protection member configured to have rigidity higher than the flexible cable, arranged between the flexible cable and the opening of the cover, and protruding toward an outside of the opening of the cover, while both end portions of an outer end edge of the opening are inclined or curved in a direction in which the flexible cable extends from the opening; and a sealing arranged in the opening in which the flexible cable and the protection member are arranged.

Abstract: A liquid discharge apparatus includes a plate-like actuator including a plurality of individual electrodes aligning in a first direction, a channel member being joined to one surface of the actuator to include a plurality of pressure chambers aligning along the first direction, and a heater being arranged directly or indirectly on the other surface of the actuator and having a convex portion in direct or indirect contact with the plate-like actuator. The convex portion is arranged between the plurality of individual electrodes and an outer edge of the actuator.

Abstract: A method for manufacturing a laminate has a process of forming a film on a substrate by an atomic layer deposition method and a process of forming a layer containing a compound polymerizable with acid and an acid generator, and then curing the layer to form resin layer on the film, in which the nitrogen atom atomic composition ratio of the film is 2.5% or less.

Abstract: A liquid discharge head includes a substrate that is provided with a supply passage having an opening; an energy generating element that is disposed on a surface of the substrate; an electric wiring layer; an insulation layer; and a discharge port member that forms a discharge port. The insulation layer has an end portion adjacent to the opening of the supply passage and set back from an edge of the opening of the supply passage toward a side where the energy generating element is disposed. The electric wiring layer includes a plurality of electric wiring layers layered on each other.

Abstract: A liquid election head including a silicon substrate and an element for generating energy that is utilized for electing a liquid on the silicon substrate, wherein a protective layer A containing a metal oxide is disposed on a first surface of the silicon substrate, a structure containing an organic resin and constituting part of a liquid flow passage is disposed on the protective layer A, and an intermediate layer A containing a silicon compound is disposed between the protective layer A and the structure.

Abstract: A perforate element (101) for use in a print head for non-contact liquid printing comprises: at least one ejection element (103) including an outlet (103a), configured to eject a bulk flow (F) of printing liquid (L) out of the print head; and a liquid residence element (107), arranged to provide a layer of liquid over the outlet (103a) which extends laterally of the outlet (103a) and through which the bulk flow (F) is ejected.

Abstract: An inkjet nozzle device includes: a nozzle chamber having a floor, a roof and perimeter sidewalls extending between the floor and the roof, wherein a nozzle aperture is defined in the roof; a heating element for generating gas bubbles in the nozzle chamber so as to eject ink through the nozzle aperture, wherein a centroid of the heating element is aligned with a centroid of the nozzle aperture; and a pair of chamber inlets defined in the floor of the nozzle chamber, the chamber inlets being symmetrically disposed about the centroid of the heating element. The inkjet nozzle device has a pair of orthogonal symmetry planes passing through the centroid of the nozzle aperture.

Abstract: An ink jet head includes an ejection unit including first nozzles arranged along a line, second nozzles arranged parallel to the first nozzles, a first actuator configured to cause ink to be ejected from the first nozzles, and a second actuator configured to cause ink to be ejected from the second nozzles, a first drive circuit configured to drive the first actuator, a second drive circuit configured to drive the second actuator, and a casing. The casing has a first space on a first side of the casing and a second space on a second side of the casing that is opposite to the first side. The first drive circuit is housed in the first space and the second drive circuit is housed in the second space.

Abstract: An actuator comprises an electroactive polymer layer (402) and a stretchable electrode structure (403) disposed at a first side of the electroactive polymer layer and further a counter electrode layer (401) disposed on a second side of the electroactive polymer layer, wherein the ratio YC/YEAP of the elastic modulus YC of the counter electrode layer and the elastic modulus YEAP of the electroactive polymer layer is at least 10. When compressed transversally by the electrodes, the electroactive polymer will expand tangentially and the actuator will relax into a shape wherein the interior of the electroded region is substantially recessed parallel to the plane of the device, while a substantial portion of the area increase is absorbed by out-of-plane bends arising at the electrode boundary (duck mode). The invention can be embodied as optically reflective or refractive devices with variable geometry.

Abstract: In one example, a printhead structure includes: a first layer; an array of openings in the first layer to form printing fluid ejection chambers; a second layer on the first layer; an array of orifices through the second layer, each orifice located adjacent to one of the openings in the first layer; a groove in the first layer spanning substantially a full length of the array of openings; and multiple holes through the second layer to the groove in the first layer.

Abstract: An inkjet nozzle device includes: a firing chamber having a nozzle aperture; and a heating element for generating gas bubbles in the firing chamber so as to eject ink through the nozzle aperture. A non-heating stabilizing bar extends across the nozzle aperture.

Abstract: A system for generating a differential gloss image useful for digital printing directly on covered packaging includes a packaging transport and a laser glossing imager. The packaging transport is configured to position packaging substrate having a printed image to a laser glossing imager. The printed image is formed of toner or ink, and covered by a transparent material. The packaging substrate is aligned with respect to the laser glossing imager exposing one or more portions of the covered printed image to radiation for altering a surface of the one or more portions of the printed image for forming a differential gloss image.

Abstract: In one embodiment, a fluid ejection device includes a substrate with a fluid slot and a membrane adhered to the substrate that spans the fluid slot. A resistor is disposed on top of the membrane over the fluid slot, and a fluid feed hole next to the resistor extends through the membrane to the slot. A shelf extends from the edge of the resistor to the edge of the feed hole, and a passivation layer covers the resistor and part the shelf. An etch-resistant layer is formed partly on the shelf and in between the fluid feed hole and the resistor.

Abstract: An ink jet printhead device includes a substrate and a plurality of thermal resistors on the substrate. Each thermal resistor includes first and second electrodes and a resistive layer extending therebetween. A polarity-changing driver is coupled to the plurality of thermal resistors and configured to change a driving polarity between the first and second electrodes of each of the plurality of thermal resistors.

Abstract: An ink jet printhead including a thermo-pneumatic actuator array for ejecting ink from an array of nozzles. The actuator array may include the use of a silicon-on-insulator (SOI) semiconductor wafer including a device layer, a handle layer, and a dielectric layer that physically separates the device layer from the handle layer to simplify printhead formation. During an exemplary process, the SOI wafer is attached to a heater wafer and a nozzle plate is attached to the dielectric layer such that, during use of the printhead, the device layer functions as an actuator membrane. Deflection of the device layer during use of the printhead creates a pressure within an ink chamber which causes ejection of ink from one of the nozzles of the array of nozzles.

Abstract: A thermal fluid-ejection mechanism includes a substrate having a top surface. A cavity formed within the substrate has one or more sidewalls and a floor. The angle of the sidewalls from the floor is greater than or equal to nominally ninety degrees. The thermal fluid-ejection mechanism includes a patterned conductive layer on one or more of the substrate's top surface and the cavity's sidewalls. The thermal fluid-ejection mechanism includes a patterned resistive layer on the sidewalls of the cavity. The patterned resistive layer is located over the patterned conductive layer where the patterned conductive layer is formed on the sidewalls of the cavity. The patterned resistive layer is formed as a heating resistor of the thermal-fluid ejection mechanism. The conductive layer is formed as a conductor of the thermal-fluid ejection mechanism, to permit electrical activation of the heating resistor to cause fluid to be ejected from the thermal fluid-ejection mechanism.

Abstract: Provided are a method of forming a through hole, which can inhibit misalignment between central axes of holes in both surfaces of a substrate, which is free from metal contamination, and which inhibits notching so as to improve the dimensional accuracy, the method including: preparing a silicon substrate; preparing a supporting substrate for supporting the silicon substrate; fixing the silicon substrate and the supporting substrate to form a composite substrate; and carrying out dry etching to the composite substrate from a silicon substrate side of the composite substrate toward a supporting substrate side of the composite substrate to form a through hole in the silicon substrate, in which the supporting substrate in the preparing a supporting substrate has a hole formed at a region corresponding to a region of the through hole to be formed in the silicon substrate, on a surface of the supporting substrate facing the silicon substrate.

Abstract: A liquid discharging recording head includes an element substrate including a plurality of discharge ports configured to discharge liquid and a plurality of energy generating elements configured to generate energy for discharging the liquid, a support member configured to support the element substrate, a first member configured to support an end of the element substrate in an array direction in which the discharge ports are arrayed, the first member having a thermal conductivity lower than a thermal conductivity of the support member, and a second member configured to support an end of the element substrate in an intersecting direction intersecting the array direction, the second member having a thermal conductivity lower than the thermal conductivity of the support member and a thermal resistance lower than a thermal resistance of the first member.

Abstract: A heating element of a fluid ejection device, the heating element including a ring-type body, an inner edge of the body, and an outer edge of the body, wherein at least one of the inner edge and the outer edge defines an undulated surface contour.

Abstract: Disclosed is a method for fabricating a planar heater structure for an ejection device. The method includes providing a substrate wafer having a plurality of plugs configured therewithin. The method also includes depositing and patterning a layer of a second metallic material over the substrate wafer, providing a layer of a dielectric material of a predetermined thickness over the patterned layer of the second metallic material, and conducting chemical mechanical polishing of the layer of the dielectric material to form a planarized top surface while exposing the patterned layer of the second metallic material. The method further includes cleaning the planarized top surface, depositing and patterning a resistor film over the planarized top surface, depositing one or more blanket films over the patterned resistor film, and patterning and etching the one or more blanket films. Further disclosed are planar heater structures and additional methods for fabricating the planar heater structures.

Abstract: A process for producing a liquid ejection head including a silicon substrate having a first surface and a second surface that is a surface on an opposite side to the first surface, an ejection energy generating element which is formed on a side of the first surface side and generates energy for ejecting a liquid, a cavity formed in the second surface and a liquid supply port which is formed in a bottom part of the cavity and communicates with the first surface, including, in the following order: (1) forming the cavity in the second surface of the silicon substrate by a first crystal anisotropic etching; (2) forming a chemical leading hollow in a slope of the cavity; (3) expanding the cavity by a second crystal anisotropic etching; and (4) forming the liquid supply port in a bottom face of the cavity by dry etching with the use of an ion.

Abstract: A liquid discharge device includes a liquid discharge head including a discharge port surface on which discharge ports for discharging liquid are formed, an electrothermal conversion element configured to generate energy for discharging liquid from the discharge ports, and a protection film configured to cover at least the electrothermal conversion element, and a cap configured to cover the discharge port surface, wherein the cap is arranged along the discharge port surface at a position opposite to the protection film via the discharge ports in a state where the cap covers the discharge port surface, and wherein the cap includes an electrode configured to be used to apply voltage between the protection film and the electrode.

Abstract: A substrate for an inkjet print head comprises: a base; a plurality of heating resistors for heating ink, the heating resistors being disposed on the base and producing heat in a case where the heating resistors are energized; a first protection layer disposed on the heating resistors and having insulation properties; and a second protection layer disposed on the first protection layer and having conductivity. The second protection layer includes individual sections disposed to individually cover the plurality of heating resistors, a common section connecting the individual sections, and connection sections interposed between the individual sections and the common section and connecting the individual sections and the common section. The connection sections are disposed at positions to be in contact with ink, and include a material which changes to an insulating film by an electrochemical reaction with the ink.

Abstract: A printhead for an ink jet printer can be formed as a plurality of substructures which are connected subsequent to inspection and/or testing. A substructure can include a semiconductor substrate such as a silicon substrate having a plurality of heater traces which are used to maintain a temperature of melted solid ink within a tolerance of a desired temperature. The traces can be accurately formed using semiconductor processing techniques. Testing and/or inspecting the substructures prior to assembly can reduce rework and scrap, and can allow the formation of printhead structures from a wide variety of materials.

Abstract: In an embodiment, a method of fabricating a fluid ejection device includes forming a resistor on the front side of a substrate, depositing a dielectric film on the resistor to protect the resistor from chemical exposure during a slot formation process, and forming a slot in the substrate that extends from the back side to the front side of the substrate.

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. A metal through the die connects a conductor on a front of the substrate to a heater element on a front of the die. A wire bond connects to the front of the substrate, but is offset from die.

Abstract: The reduction in reliably of a liquid discharge head due to the dissolution of a protective layer is suppressed. A substrate for a liquid discharge head includes a base substrate, a heat-generating resistive layer placed on the base substrate, a pair of lines placed on the base substrate, and a protective layer covering the heat-generating resistive layer and the lines. The protective layer contains a material represented by the formula SixCyNx, where x+y+z=100, 30?x?59, y?5, and z?15 on an atomic percent basis.

Abstract: An inkjet printhead includes a plurality of nozzle chambers disposed on a substrate. Each nozzle chamber includes: a floor having an ink inlet defined therein; a roof having a nozzle aperture defined therein; sidewalls extending between the floor and the roof; and a heater element suspended in the nozzle chamber, the heater element being connected to corresponding electrodes so as to heat fluid within the nozzle chamber thereby forming a gas bubble in the fluid which causes ejection of fluid through the nozzle aperture. The ink inlet is laterally offset from the nozzle aperture and a plane of the heater is parallel with a plane of the roof.

Abstract: Thermal inkjet print head, comprising a fluid feed channel for delivering fluid, fluid chambers arranged near the fluid feed channel for receiving fluid from the fluid feed channel, resistors for actuating the fluid in the chambers, arranged in a staggered pattern with respect to a fluid feed channel wall, and a cantilever extending over the fluid feed channel wall, having a staggered edge that follows the staggered pattern of the resistors.

Abstract: A nozzle assembly for an inkjet printhead includes: an ink chamber having an elliptical nozzle opening defined in a roof of the ink chamber and an ink inlet; a heater element positioned in the ink chamber, the heater element having an elongate linear beam for generating a vapor bubble in the ink chamber, the elongate linear beam having a longitudinal axis extending parallel with a major axis of the elliptical nozzle opening; and a pressure-diffusing structure positioned relative to the ink inlet. The pressure-diffusing structure is configured for diffusing pressure pulses in ink supplied to the ink chamber via the ink inlet.

Abstract: A liquid ejection system includes a liquid ejector having a structure defining a chamber, the chamber including a first surface and a second surface, the first surface including a nozzle orifice; a resistive heater located on the second surface of the chamber opposite the nozzle orifice; a first liquid feed channel and a second liquid feed channel being in fluid communication with the chamber; and a segmented liquid inlet, a first segment of the liquid inlet being in fluid communication with the first liquid feed channel, and a second segment of the liquid inlet being in fluid communication with the second liquid feed channel; and a liquid supply comprising a liquid including a polymer at a loading of at least 2 percent by weight, wherein the polymer has a molecular weight of at least 20,000, and wherein the liquid supply is fluidically connected to the segmented liquid inlet.

Abstract: A liquid ejection head includes a plurality of recording element substrates that each include an energy generating element generating energy utilized for ejecting a liquid and that each have a supply port through which the liquid is supplied to the energy generating element, a plurality of support members that each have a flow passage communicating with a corresponding one of the supply ports and that each support a corresponding one of the plurality of recording element substrates, a base substrate that supports the plurality of support members, and a heat insulating member disposed between the flow passages and the base substrate. In the liquid ejection head, a thermal conductivity of the support members is equal to or greater than a thermal conductivity of the recording element substrates, and a thermal conductivity of the heat insulating member is less than a thermal conductivity of the base substrate.

Abstract: A liquid dispenser includes first and second liquid chambers. The first chamber includes a nozzle having a center axis. The second chamber is in fluid communication with liquid supply and return channels. A flexible membrane separates and fluidically seals the first and second chamber. A heater, associated with the second chamber, includes a center point and is selectively actuated to create a pressure pulse in a liquid that causes the flexible membrane to move from a first position to a second position to eject liquid through the nozzle of the first chamber. The center point of the heater is located off of the center axis of the nozzle. In one embodiment, a liquid supply provides a liquid that flows continuously from the supply through the liquid supply channel through the second chamber through the liquid return channel and back to the supply during a drop dispensing operation.

Abstract: A multi-dimensional data registration integrated circuit is configured for driving array-arrangement devices. The array-arrangement devices comprise a plurality of first hierarchy sets, each which comprises a plurality of second hierarchy sets. The multi-dimensional data registration integrated circuit comprises a first hierarchy address selection circuit, a second hierarchy address selection circuit and a data supply circuit. The first hierarchy address selection circuit scans the first hierarchy sets, and selects a unit of the first hierarchy sets to activate it. The second hierarchy address selection circuit scans the second hierarchy sets. The data supply circuit writes a plurality of data into each designated unit of the second hierarchy sets according to the scanning sequence of the second hierarchy address selection circuit.

Abstract: An inkjet printhead has a plurality of nozzles; a bubble forming chamber corresponding to each of the nozzles; and a heater element disposed in each of the bubble forming chambers. The heater element is configured for heating an ejectable liquid above its boiling point to form a gas bubble that causes the ejection of a drop from the nozzle. The heater element is comprised of titanium aluminum nitride.

Abstract: A manufacturing method of a liquid ejection head provided with a flow passage communicating with an ejection outlet for ejecting liquid includes steps of preparing a substrate on which a flow passage wall forming member for forming a part of a wall of the flow passage and a solid layer having a shape of a part of the flow passage contact each other, wherein the flow passage wall forming member has a height, from a surface of the substrate, substantially equal to that of the solid layer; providing on the solid layer a pattern having a shape of another part of the flow passage; providing a coating layer, for forming another part of the wall of the flow passage, so as to coat the pattern; providing the ejection outlet to the coating layer; and forming the flow passage by removing the solid layer and the pattern.

Abstract: A thick-film thermal printhead (FIG. 11) and a variety of implementation approaches for controlling such a printhead. The conductive lead at each end of the heater element is switched to either the power supply (Vhd) or ground, depending on the corresponding nib data bit with the advantage of eliminating leakage current completely. Thermal printhead control is based on the sequential exclusive-OR (XOR) logic operation applied to the shifted-in nib data bit stream. The XOR function may be within the driver IC, the raster data processing FPGA (Field Programming Gate Array), or in a lookup table in the memory block of a main processor system. A new driver IC is disclosed in which the outputs are SPDT (Single-Pole-Double-Throw) switches, and the built-in XOR gates are configured to act in the pass-through mode, so that the new driver IC may be used as a traditional driver IC.

Abstract: The reduction in reliably of a liquid discharge head due to the dissolution of a protective layer is suppressed. A substrate for a liquid discharge head includes a base substrate, a heat-generating resistive layer placed on the base substrate, a pair of lines placed on the base substrate, and a protective layer covering the heat-generating resistive layer and the lines. The protective layer contains a material represented by the formula SixCyNx, where x+y+z=100, 30?x?59, y?5, and z?15 on an atomic percent basis.

Abstract: Provided is an ink jet recording head, including: an ink ejection portion, in which heat is applied to ink supplied inside thereof, thereby providing the ink with a pressure for ejecting the ink outside; a substrate having a first surface on which the ink ejection portion is provided and a second surface on an opposite side to the first surface, the second surface having at least one recess; and a heat radiation member for releasing heat outside, the heat being transmitted from the ink ejection portion to the substrate, the heat radiation member having a protrusion with a shape corresponding to a shape of the recess, the protrusion being embedded in the recess so that the protrusion is provided in direct contact with the recess.

Abstract: A fluid ejection device includes a firing chamber having an ejection orifice opposite a chamber floor, a heating element and a mesa projecting from the chamber floor, the mesa is spaced from the heating element to define a passive zone between the mesa and heating element.

Abstract: A printhead (10) for use in an inkjet printing process includes a substrate (12) having at least one ink feed opening (14) defined therein, an ink chamber (16) in operative and fluid communication with the ink feed opening(s) (14), and a nozzle plate (18) disposed on a portion (P1) of the substrate (12). The nozzle plate (18) has a plurality of orifices (20) defined therein. The printhead (10) further includes a firing resistor (22) disposed on another portion (P2) of the substrate (12) and proximate to the ink feed opening(s) (14) and a barrier structure (24) disposed on the other portion (P2) of the substrate (12) and positioned adjacent to the firing resistor (22).

Abstract: An inkjet nozzle assembly includes a nozzle chamber having a planar roof spaced apart from a floor. A heater element is suspended in the nozzle chamber and is configured as a planar beam extending longitudinally and parallel with a plane of the roof. A nozzle aperture defined in the roof has a centroid offset from a longitudinal centroid of the planar beam.