Abstract: Provided is a liquid recording head in which a protective layer having resistance to liquid and an adhesiveness improving film are disposed on a second surface opposite to a first surface of a silicon substrate. The first surface and the second surface have a plane direction. The protective layer is disposed in a peripheral region of an opening of a liquid supply port. A liquid ejection chip is bonded to a head substrate with an adhesive so that the liquid supply port communicates to a liquid introduction port on a side of the second surface of the silicon substrate.

Abstract: An inkjet recording apparatus including an ink; and an ink discharging head configured to discharge the ink, wherein the ink discharging head is provided with a nozzle having a silicone-containing water-repellent film on a surface thereof on which the ink contacts, wherein the ink contains a colorant; water; and a water soluble organic solvent, wherein the colorant contains a carbon black partially coated with a resin, and wherein the ink meets the following expressions (1) and (2): 1.0×104<N×R/100<1.0×106??(1) 20.0<R?100.0??(2) where R (% by mass) denotes a rate of the mass of the carbon black partially coated with a resin relative to the mass of the colorant, and N denotes the number of coarse particles having a particle diameter of 0.5 ?m or more per 5 ?L of the ink where the number thereof is determined with a number counting method.

Abstract: A Method for manufacturing a liquid discharge head having a flow path forming member for forming a liquid flow path which communicates with a discharge port discharging liquid, comprises; preparing a layer containing a compound having a structure represented by Formula (1) and a structure represented by Formula (2) as a main chain on a substrate, providing a solution in which a resin is dissolved in a compound represented by Formula (3) or (4) on the layer, forming a mold having the shape as the flow path from the resin, providing a layer which will become the flow path forming member so as to cover the mold, and removing the mold to form the flow path.

Abstract: The image formation apparatus includes: a cylindrical conveyance member which conveys a recording medium in a conveyance direction while rotating in a state where the recording medium is held by suction on a circumferential surface of the cylindrical conveyance member; a liquid ejection head which ejects liquid from an ejection face thereof toward the recording medium being conveyed by the cylindrical conveyance member; and an ejection face protective device which includes a restricting member which restricts floating up of the recording medium by coming in contact with the recording medium at a position in a first region between the ejection face of the liquid ejection head and the circumferential surface of the cylindrical conveyance member or a second region adjacent to the first region, when the recording medium is released from the suction toward the circumferential surface of the cylindrical conveyance member while being conveyed by the cylindrical conveyance member.

Abstract: An ink discharge head includes a coating resin layer having a plurality of discharge ports for discharging ink, and ink flow passages which communicate with the plurality of discharge ports, respectively; and a substrate having energy generation elements which generate the energy for discharging ink and provided with the coating resin layer. A crack inducing portion for relieving the stress produced at the interface between the coating resin layer and the substrate is formed at lateral faces of the outer peripheral edge of the coating resin layer.

Abstract: A discharge test device including: a head that includes a plurality of nozzles discharging liquid to a medium, a temperature obtaining section that obtains a temperature related to the head, a detection electrode that faces the head with a predetermined distance therebetween, an identification section that applies a predetermined voltage to the detection electrode and identifies an abnormal nozzle on the basis of voltage change of the detection electrode generated by liquid discharge from the nozzles, and a control section that controls the head and the identification section so that: when the temperature obtained by the temperature obtaining section is within a first temperature range, the head discharges the liquid to the medium after the identification section identifies the abnormal nozzle, when the temperature obtained by the temperature obtaining section is outside the first temperature range and within a second temperature range that is larger than the first temperature range, the head discharges the l

Abstract: According to one embodiment, a method of manufacturing an inkjet head includes forming metal films respectively on a surface of a base member and a surface of a driving element attached to the base member, and shaving the metal film formed on the base member with a first laser beam and shaving the metal film formed on the driving element with a second laser beam having power different from power of the first laser beam to form a conductor pattern.

Abstract: A liquid discharge head is arranged in a manner that in the cross-section of a discharge port perpendicular to a liquid discharge direction, the discharge port includes at least one projection that is convex inside the discharge port; a first area, for holding a liquid surface connecting a pillar-shaped liquid that is elongated outside the discharge port; and second areas where a fluid resistance is lower than that in the first area so as to pull the liquid in the discharge port in a direction opposite to the liquid discharge direction. The first area is formed in the direction in which the projection is convex, and the second areas are formed on both sides of the projection.

Abstract: A liquid dispenser includes an array of liquid dispensing elements positioned on a substrate. Each liquid dispensing element includes a liquid dispensing channel including an outlet opening. Liquid supply and return channels are positioned on the substrate in fluid communication with the liquid dispensing channel. Liquid supply and return passages extend through the substrate in fluid communication with the liquid supply and return channels, respectively. A liquid manifold includes liquid supply and return ducts in fluid communication with each liquid supply and return passage of each liquid dispensing element, respectively. A liquid supply provides liquid that flows from the liquid supply duct of the liquid manifold through each liquid dispensing element to the liquid return duct of the liquid manifold. A selectively activated diverter member, associated with the liquid dispensing channel, diverts a portion of the liquid flowing through the dispensing channel through the outlet opening.

Abstract: Various embodiments provide materials and methods for a superoleophobic device, which can include a conformal oleophobic coating disposed on glass pillars and/or stripe-shaped glass structures on a glass substrate to provide the device with a textured superoleophobic surface.

Abstract: A method for manufacturing a liquid flow passage unit that is disposed between a liquid supply source storing liquid and a head main body and that forms a part of a flow passage leading from the liquid supply source to the head main body, includes bringing a film member into contact with a protrusion formed on the edge of an opening of a flow passage for liquid formed in a main body member made of resin, so as to cover the opening with the film member, pressing the film member covering the opening toward the flow passage, so as to apply a predetermined tension to the film member, and integrally molding a sealing member by pouring resin on the edge of the tensioned film member, so as to fix the film member between the sealing member and the main body member.

Abstract: An aspect of the invention provides an ink composition ejected from a nozzle having a step, the ink composition containing at least any one of a first water-soluble organic solvent and a second water-soluble organic solvent, wherein the first water-soluble organic solvent exhibits a surface tension of 30 mN/m or lower at 20° C., an aqueous solution of the second water-soluble organic solvent of 10 mass % exhibits a surface tension of 50 mN/m or lower at 20° C., and the total content of the first water-soluble organic solvent and the second water-soluble organic solvent is 0.15 mass % or higher.

Abstract: A printhead is provided having a casing mounted on a molding to define a fluid reservoir and a first passage in fluid communication between the fluid reservoir, a wafer at least defining at least a part of a channel spaced from the first passage and at least a part of a second passage arranged to provide fluid communication between the first passage and channel, a plurality of ink ejection devices in fluid communication with the channel, and a metal cap portion which encloses the casing and molding.

Abstract: A liquid discharge head includes a first substrate having an energy generating element for discharging a liquid, and a second substrate which is bonded to the first substrate and which has a discharge port for discharging the liquid and a groove that forms a passage for supplying the liquid to the energy generating element, wherein one surface of the second substrate on the front surface side of the liquid discharge head and the other surface thereof, which is the back surface of the one surface, are individually provided with recesses.

Abstract: A liquid ejecting head including a liquid ejecting port for ejecting a liquid and nozzle layer having a liquid channel communicating with the liquid ejecting port, wherein the nozzle layer has two layers, and a first layer which is a layer at the side of the liquid channel among the two layers has a resin film-formed with an acid and has a smaller static contact angle of water as compared with a second layer which is the other layer.

Abstract: A liquid ejecting apparatus includes: a first nozzle row in which first nozzles ejecting a first liquid are arranged in a predetermined direction; a second nozzle row in which second nozzles ejecting a second liquid are arranged in the predetermined direction; a movement mechanism moving the first and second nozzle rows in a movement direction intersecting the predetermined direction relative to a medium; a transport mechanism transporting the medium in the predetermined direction relative to the first and second nozzle rows; and a control unit repeating an image forming operation of ejecting the liquids from the first and second nozzles while moving the first and second nozzle rows in the movement direction by the movement mechanism and a transport operation of transporting the medium in the predetermined direction relative to the first and second nozzle rows by the transport mechanism.

Abstract: A mixing method is disclosed. The mixing method includes providing a drop generating device including a first drop ejector, a second drop ejector and a collector. The mixing method also includes ejecting a plurality of drops of a first reactant from the first drop ejector and ejecting a plurality of drops of a second reactant from the second drop ejector and collecting the drops with the collector.

Abstract: Various embodiments provide a device having a multi-scale superoleophobic surface and methods for forming and using the device, wherein a particulate composite layer including metal-containing particulates is formed on a textured micron-/sub-micron surface of a semiconductor layer to provide device with multi-scale rough surface.

Abstract: A liquid discharge method is a method for depositing liquid on a plurality of target discharge partitioned areas formed on a substrate as the liquid is selectively discharged from a plurality of discharge nozzles while the substrate and the discharge nozzles are moved relative to each other. The liquid discharge method includes setting an arrangement pattern according to shapes and positions of the target discharge partitioned areas so that a number of the discharge nozzles selected to be used among the discharge nozzles capable of depositing the liquid in the target discharge partitioned areas is the same in each discharge timing.

Abstract: A printhead integrated circuit (IC) for a stationary pagewidth printhead, includes nozzle rows extending along a longitudinal axis thereof. A length of a printable zone corresponding to the nozzle row is longer than a length of the nozzle row.

Abstract: A platen unit includes a supporting member, a first member that is provided on the supporting member and includes an inner space, a second member that is provided on the supporting member and includes an inner space, a first platen in which at least a portion is provided on the first member and which includes holes communicating with the inner space of the first member, and a second platen that is provided on the first member and the second member, includes holes communicating with the inner space of the first member, and holes communicating with the inner space of the second member.

Abstract: A print head includes a nozzle plate, a fixing plate fixed to the nozzle plate, an oscillation sheet, and a security assembly. The fixing plate defines a receiving groove. The oscillation sheet is fixed between the fixing plate and the nozzle plate and covers the receiving groove. The security assembly includes a fixing component, an elastic component, a fixing element, an anti-detachable component, and a pointed tip extending from a distal end of the anti-detachable component. The security assembly is fixed to the fixing plate, the elastic component and the anti-detachable component are received in the receiving groove with the pointed tip pointed towards the oscillation sheet. A first end of the compressed elastic component resists against the fixing component and a second end of the elastic component resists the anti-detachable component.

Abstract: A liquid discharge apparatus includes a liquid discharge head which reciprocates in a first direction on a predetermined plane, which discharges liquids, and which has connecting ports arranged in a second direction; liquid supply sources which store the liquids; and flexible tubes which are arranged in a state of being bent and each of which constructs a part of a liquid flow passage, and first ends of the tubes are connected to the connecting ports; the tubes are arranged in a third direction intersecting the predetermined plane at fixed portions of the tubes; and each of the tubes has an external shape of which cross section perpendicular to an extending direction of the tube is elliptical; and at least at one of the first end and the fixed portion, a major axis direction of the cross section is the third direction.

Abstract: A platen unit includes a supporting member that is grounded and is made of a metal, a platen supporting member that is provided on the supporting member, includes an inner space, is formed of a conductive resin, and includes a first contact point, a platen that is provided on the platen supporting member, is formed of a conductive resin, and includes a second contact point which contacts the first contact point, and a seal member that is provided between the platen supporting member and the platen.

Abstract: A droplet discharge head is provided. The droplet discharge head includes: a discharge port through which a droplet is discharged; a liquid channel which communicates with the discharge port; and an actuator which includes a deformation layer defining a part of wall surfaces of the liquid channel and an electrode facing the liquid channel through the deformation layer, and which causes the deformation layer to deform toward the liquid channel when a drive signal is supplied to the electrode. A groove is formed on a surface of the electrode opposite to the deformation layer.

Abstract: A printhead assembly includes a plurality of inkjet ejector arrays having corresponding ink receptacles. Each inkjet array is formed from a plurality of inkjet stack layers that are bonded to a single aperture layer, and the inkjet arrays are positioned with a predetermined alignment about a curved image receiving surface.

Abstract: A liquid ejecting head includes: a main head unit that ejects ink; a first flow channel member and a second flow channel member that include first and second flow channels, respectively, through which ink to be supplied to the main head unit flows; and a ring-shaped sealing member pinched by the first flow channel member and the second flow channel member. The first flow channel and the second flow channel communicate with the interior of a space area defined by the first flow channel member, the second flow channel member, and the sealing member, and an atmosphere exposure channel that connects the space area with the exterior is formed in a joining surface between the sealing member and the first flow channel member.

Abstract: Disclosed is a fluid ejection device for an inkjet printer that includes a substrate having at least one fluid flow channel configured within a bottom portion of the substrate. Each fluid flow channel of the at least one fluid flow channel is configured by etching the bottom portion. The substrate also includes a plurality of fluid flow vias configured within a top portion of the substrate. Each fluid flow via of the plurality of fluid flow vias is configured by etching the top portion. The each fluid flow via is further configured to be in fluid communication with a corresponding fluid flow channel through an isotropically etched cavity configured below the each fluid flow via and fluidically coupled to the corresponding fluid flow channel. The fluid ejection device also includes a flow feature to layer and a nozzle plate. Further disclosed are methods for fabricating fluid ejection devices.

Abstract: A micro-fluid ejection device defines a print gap from an ejection head to a print media. An ejection zone of the head ejects fluid across the print gap during use. At least one wind baffle adjacent the ejection zone modifies airflow in the print gap as the head scans. In various designs, multiple wind baffles reside on either sides of the ejection zone to provide a cascading airflow effect from one wind baffle to the next. Baffle shapes, spacing and locations define multiple embodiments.

Abstract: A method of manufacturing a printhead includes providing a polymeric substrate having a surface; providing a patterned material layer on the surface of the polymeric substrate; and removing at least some of the polymeric substrate not covered by the patterned material layer using an etching process.

Abstract: A liquid ejection head includes a nozzle formation member having a liquid repellent layer disposed on a droplet ejection face of a nozzle substrate in which one or more nozzle orifices is formed to eject droplets. The liquid repellent layer includes a first sub-layer and a second sub-layer. The first sub-layer contains a higher proportion of low-molecular-weight molecules than the second sub-layer. The second sub-layer contains a higher proportion of high-molecular-weight molecules than the first sub-layer. Both the first sub-layer and the second sub-layer are exposed on a surface of the nozzle formation member.

Abstract: An apparatus is provided, the apparatus including a printhead die, a base coupled to the printhead die, a flexible circuit mounted on the base and electrically connected to the printhead, and an adhesive sandwiched between the base and the flexible circuit. The base defines a trench with a sidewall having scallops formed therein. The adhesive is disposed in the trench to secure the flexible circuit to the base.

Abstract: An inkjet head includes a main body, a film, a piezoelectric atomizer, a cover and a nozzle plate. The main body includes a cavity receiving a fluid with an opening connecting the cavity. The cover is fastened to a top end of the main body. The film is interposed between the cover and the main body. The nozzle plate includes a plurality of nozzles. The nozzle plate is disposed on a bottom end of the main body. The piezoelectric atomizer is interposed between the cover and the film. The piezoelectric atomizer introduces pressure variations in a static pressure to atomize the fluid.

Abstract: A method for using a processor to process image data received from an image data source in preparation for multipass printing, comprising multitoning the image data to produce a multitoned image, using the multitone level of a pixel in the multitoned image to select a plane of a print mask, using the location of the pixel in the multitoned image to select a cell of output pixels in the selected plane of the print mask, and copying the selected cell of output pixels to corresponding locations within a print buffer.

Abstract: An inkjet head with a harmonica-type head tip is configured in a way that wirings electrically connected to drive electrodes within channels are led rearward from a rear surface of the head tip. A groove is provided along en array direction of the channels in areas on the rear surface of the head tip in which the channels are not formed. A lead-out electrode, which is electrically connected to drive electrodes, is formed from the rear surface of the head tip to the interior of the groove. One end of a wiring member, which has connecting wirings upon an insulating material corresponding to the lead-out electrodes, is inserted into the groove.

Abstract: Provided is a liquid ejection head, including: an ejection orifice forming member having an ejection orifice for ejecting liquid; a substrate having a supply port for supplying the liquid to the ejection orifice; and a filter disposed at a position upstream of the ejection orifice when the liquid is supplied to the ejection orifice, in which the filter includes an opening having a diameter smaller than or equal to a diameter of the ejection orifice, and a tapered shape structure disposed at a position upstream of the opening when the liquid is supplied to the ejection orifice, the tapered shape structure having a distal end directed toward an upstream side.

Abstract: Micro fluidic devices comprising three dimensional elements fabricated onto a substrate using thick film printing technology, e.g., screen printing, wherein the three dimensional elements possess both structural and functional properties.

Abstract: The present invention related to an inkjet printhead, adaptive for an ink cartridge including three ink-supplying tank, the inkjet printhead includes: a nozzle plate having a plurality of nozzles; and an inkjet chip for controlling ink jetting and having a total area region having a length and a width, the total area region including: a non-wiring region for installing three single ink-supplying flow channels; and a wiring region for installing an internal circuit including a plurality inkjet unit assembly, each inkjet unit of the inkjet unit assembly including a heater installed correspondingly to the nozzle; wherein an area of the wiring region of the inkjet chip is or less than 77% of a total area of the inkjet chip.

Abstract: A liquid ejection head including an ejection device substrate having a substrate provided with an energy-generating element that generates energy for ejecting a liquid, a liquid supply member that supplies the liquid to the ejection device substrate, and a support member that is provided between and joined to the ejection device substrate and the liquid supply member. The support member has at least two liquid supply flow paths that are through-holes extending through the support member and has a projected or depressed portion at its joint surface with respect to the liquid supply member. A spacing between two adjoining liquid supply flow paths at the joint surface with respect to the liquid supply member is larger than a spacing between the adjoining two liquid supply flow paths at a joint surface of the support member with respect to the ejection device substrate.

Abstract: A nozzle for a drop ejector is shaped as a plurality of lobes adjoining a central opening region and extending along a radial direction away from the central region. Each lobe increases in width as distance from the central region increases. The nozzles include sidewalls that converge toward the central opening region of the nozzle, giving the lobe a teardrop shape. Because the central part of the nozzle opening is constricted the ink that is ejected pinches off in the center and provides several advantages such as straighter trajectory, shorter tails, better accuracy, smaller ink volume, and less satellite effects.

Abstract: A liquid ejection head includes a head main body which discharges liquid, a flow path member main body on which a liquid reception member for receiving liquid supplied from the outside is formed, a first case, a second case, and a first insertion portion which is provided on the flow path member main body and through which a securing member for securing the first case, the second case, and the flow path member main body to one another is inserted. In the liquid ejection head, the first insertion portion is formed such that the outer wall covers an exposing portion from which the securing member is exposed.

Abstract: A method of forming a non-wetting coating on a fluid ejector includes applying an oxygen plasma to a substrate to form an outer portion of the substrate having a density that is greater than a density of an interior portion of the substrate and depositing a non-wetting coating on an exterior surface of the outer portion. The outer portion is less than 80 ? thick.

Abstract: There is provided a water-based ink for ink-jet recording including: a self-dispersible carbon black modified by carboxylic acid group; water; and a water-soluble organic solvent, wherein oxalate ion is contained in the water-based ink in a amount of not more than 45 ppm by weight.

Abstract: A printing head includes a printing element substrate that is hard to be deformed even if the printing head falls by mistake. The printing head comprises element substrate in which an energy generating element for generating energy used for ejecting ink is provided, a first sheet-shaped portion to which the element substrate is provided, a second sheet-shaped portion provided away from the first sheet-shaped portion at an opposite side to a direction of ejecting the ink in relation to the first sheet-shaped portion, and a sheet-shaped wall member connecting the first sheet-shaped portion to the second sheet-shaped portion, wherein the wall member has a thickness of a portion connected to the second sheet-shaped portion, which is larger than a thickness of a portion connected to the first sheet-shaped portion.

Abstract: A printing head, which can suppress the occurrence of cracks in a printing element substrate, even if accidentally dropped, includes the printing element substrate, an ink flow passage and a sheet-shaped portion comprising a rectangular major surface. A rear surface side of the major surface of the sheet-shaped portion is provided with a space formed separately from the ink flow passage. A surface adjacent to the major surface is provided with an opening of the space formed therein, and the sheet-shaped portion is provided with a concave portion formed on the rear surface side of two regions between the printing element substrate and two corner portions arranged proximate to the opening.

Abstract: Provided is a pressure damper (1) including: a main body portion (2) including: a recessed portion (3) having an opening portion (10) opened in an upper end portion; and a communication port (4) opened in an inner surface of the recessed portion to communicate to an outer region; and a flexible film (5) bonded to the upper end portion to close the opening portion. The upper end portion of the main body portion includes a bank (6) provided higher than an upper surface (HS) of the main body portion and surrounding the opening portion. The flexible film is bonded to an upper surface (DS) of the bank so that a bonding surface of the main body portion bonded to the flexible film is flat to improve a bonding strength and a sealing property between the flexible film and the main body portion.

Abstract: A manifold assembly has been constructed that filters ink before the ink enters an inkjet ejector in an inkjet print head. The manifold assembly includes an adhesive layer having openings, an ink manifold layer having a plurality of openings, the openings in the adhesive layer being aligned with the openings in the ink manifold layer, and a polymer layer having a plurality of filter areas, the filter areas being aligned with the openings in the ink manifold layer and the openings in the adhesive layer, the adhesive layer being interposed between the polymer layer and the ink manifold layer.

Abstract: Disclosed is an inkjet printhead that includes a plurality of fluid ejecting chips arranged in a plurality of rows. The plurality of fluid ejecting chips includes a first set of fluid ejecting chips arranged in a first row of the plurality of rows. The plurality of fluid ejecting chips includes a second set of fluid ejecting chips arranged in a second row parallel to the first row of the plurality of rows. Each fluid ejecting chip of the second set of fluid ejecting chips is configured between two consecutive fluid ejecting chips of the first set of fluid ejecting chips in a predetermined orientation. The inkjet printhead further includes a plurality of fluid vias and a plurality of bond pads. Further disclosed are fluid ejecting chips for being used in an inkjet printhead.

Abstract: A sealing member, disposed between a first member in which a first liquid flow channel is provided and a second member in which a second liquid flow channel that communicates with the first liquid flow channel is provided, includes: a plurality of communication openings; a reinforced portion in which the communication openings are provided; at least two first reference holes; a flexible portion, provided between the two first reference holes, that is weaker than the reinforced portion; and a second reference hole provided between the two first reference holes.

Abstract: There is provided a production method for a liquid discharging apparatus including a liquid discharging head having a discharging port configured to discharge liquid, and a thermoplastic support portion having a liquid supply passage configured to supply the liquid to the liquid discharging head. The production method includes a preparation step of preparing the liquid discharging head and the support portion, a heating step of heating the liquid discharging head, an approach step of moving the liquid discharging head close to the support portion and melting the support portion by applying radiant heat from the liquid discharging head to the support portion, and a pressing step of pressing the liquid discharging head against the support portion so that the melted support portion forms a wall portion to contact an outer peripheral portion of the liquid discharging head.