Abstract: A printhead assembly is provided, the printhead assembly including a printhead die, a black fluid slot formed in the printhead die to deliver black printing fluid, and a color fluid slot formed in the printhead die to deliver color printing fluid.

Abstract: The effects on an image are maximally decreased with respect to ejection by printing elements included in the low flow rate areas of a serial channel in an inkjet printing apparatus that uses a joined head in which multiple chips provided with multiple printing element arrays are disposed. For this purpose, print data is distributed to individual printing elements at a joining portion between two chips, such that fewer printing elements execute ejection operations on a printing element array A distanced farther from the center line of a base plate than a printing element array D nearer the center line. Doing so suppresses ejection by printing elements included in low flow rate areas which manifest near the turns of an ink channel, and reduces density defects due to ejection by such printing elements.

Abstract: A liquid ejection head includes ejection ports for ejecting liquid, recesses respectively accommodating the ejection ports in the insides thereof, ejection sections operating as passages directed to the respective ejection ports, and liquid channels for supplying the respective ejection sections with liquid. The ejection sections and the liquid channels are arranged in rows extending in respective directions that intersect each other, and the connection sections respectively connecting the ejection sections and the corresponding liquid channels represent an elliptic contour having a major axis and a minor axis as viewed from the corresponding one of the ejection ports, while the recesses also represent an elliptic contour having a major axis and a minor axis.

Abstract: A pressure damper includes a main body portion and a flexible film mounted on the main body portion. The main body portion has upper end portion, a recessed portion having an opening portion opened in the upper end portion, and a communication port opened in an inner surface of the recessed portion to communicate with an outer region of the pressure damper. The upper end portion forms at least one bank that surrounds the opening portion. The at least one bank has a height larger than a height of an upper surface of the main body portion and a width smaller than a width of a side wall of the main body portion. The flexible film is bonded to an upper surface of the bank to close the opening portion.

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: A liquid jet head includes an actuator substrate having grooves, and a flexible substrate for supplying a drive signal to the actuator substrate. On a surface of the actuator substrate, in the vicinity of a rear end thereof, are formed a common extension electrode and an individual extension electrode connected to drive electrodes of a discharge channel and dummy channels, respectively. The common extension electrode and the individual extension electrode are connected to a common wiring electrode and an individual wiring electrode of the flexible substrate, respectively. In a common wiring intersection region in which the common wiring electrode of the flexible substrate intersects the drive electrodes of the actuator substrate, upper end portions of the drive electrodes on side surfaces of the dummy channels are formed deeper than the substrate surface.

Abstract: A droplet ejection head includes: a nozzle plate which has a nozzle aperture for ejecting droplets of liquid; a flow channel structure including a pressure chamber which contains the liquid and is connected to the nozzle aperture through a flow channel; and a pressure generating element which applies pressure to the liquid in the pressure chamber, wherein an ejection surface of the nozzle plate where the droplets of the liquid are ejected is made of a fluorine-containing DLC film.

Abstract: The circuit board holding section between the first and second holding members is sealed by an adhesive in an area other than an area where a connection wiring is connected to the circuit board, the first and second holding members are fixed to each other by engaging engaging claws, which are provided in two or more side surfaces at the outer circumference of one of the first and second holding members, with the other holding member, and the first and second holding members are fixed to each other by screw members.

Abstract: A liquid ejection head, wherein recessed portions are formed in an ejection face such that, where, in the one direction, a distance D1 is a distance between (i) a one-side portion of an opening end of one recessed portion and (ii) an other-side portion of an opening end of another recessed portion adjacent to the one recessed portion on one side thereof and where a distance D2 is a distance between (i) an other-side portion of the opening end of the one recessed portion and (ii) a one-side portion of an opening end of another recessed portion adjacent to the one recessed portion on the other side thereof, a large-and-small relationship of an average value of the distances D1, D2 of a second recessed portion with respect to that of a first recessed portion is the same as a large-and-small relationship of a cross-sectional area of the first recessed portion with respect to that of the second recessed portion.

Abstract: In some aspects of the present application, a print head and a method of forming the print head are disclosed. The print head can include an array of jets formed in a jet stack; at least one ink reservoir operable to deliver ink to the jet stack; an actuator array arranged on the control circuitry formed into an actuator layer to cause the reservoir to deliver ink in response to signals from the control circuitry; a standoff adhesive layer arranged on the actuator layer, the standoff adhesive layer having an array of holes corresponding to the actuators; and a flex circuit layer having an array of bumped contacts pad corresponding to the array of holes of the standoff adhesive layer.

Abstract: A microfluidic device comprising a monolithic superstructure, wherein the superstructure contains fluid channels, and in at least one of the fluid channels, in an area where the channel changes direction or intersects another channel, the channel is greater in cross-section than in other areas of said channel. A microfluidic device superstructure comprising fluid channels wherein said channels comprise projections into at least part of the channel to aid in laminar flow of fluid.

Abstract: A fluidic structure has a first chamber having a connection to a fluid reservoir and a connection to an array of apertures, the chamber forming a flow path between the fluid reservoir and the array of apertures, a second chamber having a connection to at least one vent connected to an atmosphere external to the fluidic structure, and at least one path between the first chamber and the second chamber.

Abstract: A liquid supply member for supplying a liquid to a liquid discharge head having a discharge port which discharges a liquid, includes: a first member consisting of a resin material; a second member consisting of a resin material; and a supply path formed by joining the first member and the second member to each other, the supplying path supplying a liquid to the liquid discharge head, wherein at least a part of an internal surface of the supply path is a smooth surface smoothed by melting the resin after being molded.

Abstract: A printhead includes a substrate, a filter membrane structure, and a liquid source. A first portion of the substrate defines a plurality of nozzles. A second portion of the substrate defines a plurality of liquid chambers. Each liquid chamber of the plurality of liquid chambers is in fluid communication with a respective one of the plurality of nozzles. The filter membrane structure is in contact with the second portion of the substrate. Each liquid chamber of the plurality of liquid chambers is in fluid communication with a distinct portion of the filter membrane structure. The filter membrane structure includes a polymeric material layer. The liquid source provides liquid under pressure through the filter membrane structure. The pressure is sufficient to jet an individual stream of the liquid through each nozzle of the plurality of nozzles after the liquid flows through the filter membrane structure.

Abstract: A liquid ejection head includes a recording element substrate having a member with a liquid ejection orifice, and a substrate having an energy-generating element for ejecting the liquid; a wiring substrate including wirings connected to terminals that are formed along an end portion side of a surface of the substrate where the element is formed and are electrically connected to the element; and a support member including a support supporting the recording element substrate through adhesive, a groove formed along the support and a wiring support supporting the wiring substrate. A sealing material is applied to a connection portion between the terminals and wirings and is applied to a bottom surface of the groove formed on an end portion side of the surface where no terminal is formed. A part of a side of the substrate corresponding to the end portion side is exposed without being covered with the sealing material.

Abstract: This hybrid ink get printer HIP includes; a print medium supply unit MS for supplying a print medium W; and a printing unit 4 for printing on the print medium W, the printing unit 4 comprising at least two print head units each configured from a print head that discharges ink, and a drying format differing between ink discharged by one of the print head units and ink discharged by another of the print head units.

Abstract: A method of fabricating a MEMS inkjet type print head and the resulting device is disclosed. The method includes providing a driver component and separately providing an actuatable membrane component, the actuatable membrane component being formed in the absence of an acid etch removing a sacrificial layer. The separately provided actuatable membrane component is bonded to the driver component and a nozzle plate is attached to the actuatable membrane component subsequent to the bonding. Separately fabricating the components removes the need for hydrofluoric acid etch removal of a sacrifical layer previously required for forming the actuatable membrane with respect to the driver component.

Abstract: A droplet ejection head includes head members, dummy members, a sealant, and elastic members. Each of the head members has a nozzle face where a plurality of nozzles for ejecting droplets are formed and an attaching face which is a back side face with respect to the nozzle face. Each of the dummy members has a dummy nozzle face and an attaching face which is a back side face with respect to the dummy nozzle face. The dummy members are placed at both end sides of the elongated substrate in the longitudinal direction so that second gaps between the outmost head members and the dummy members are formed. The sealant is filled in each of first gaps between the head members and the second gaps, bonds the head members and the dummy members with the outmost head members, and seals the first gaps and the second gaps.

Abstract: A method for manufacturing a discharge port member used in a liquid discharge head, comprising in the following order, preparing a substrate at least whose surface is conductive, the substrate having, formed on said surface, a first insulating resist for forming a discharge port and a second insulating resist for forming a recessed portion of a wall of a flow path, forming on surface a first plating layer by plating using said first resist and said second resist as a mask, removing said second resist, forming a second plating layer on an exposed portion of said substrate from which said second resist has been removed, said second plating layer being formed by plating using said first resist as a mask, said second plating layer forming said recessed portion of said wall, and removing said first resist to form said discharge port and removing said substrate.

Abstract: A liquid discharge head substrate includes an external terminal, a diode, a first conductive layer, a second conductive layer, and a third conductive layer. The external terminal is configured to connect to an external. The first conductive layer is connected to the external terminal for causing an input current to flow from the external terminal, and the diode includes an anode and a cathode. The second conductive layer is connected to the first conductive layer and one electrode of the anode and cathode, and causes a surge current generated when a surge voltage is applied from the external terminal, to flow from the first conductive layer to the one electrode. The third conductive layer is connected to the other electrode of the anode and the cathode and passes the surge current flowing from the one electrode to the other electrode.

Abstract: A liquid droplet jetting apparatus includes a common liquid chamber to which the liquid is supplied, a plurality of pressure chambers which communicate with the common liquid chamber and which cause a pressure change in the liquid, a plurality of nozzles which jet the droplets of the liquid, a pressure attenuation chamber which has a throttled portion having a cross-sectional area smaller than that of the common liquid chamber, and an attenuation portion having a cross-sectional area greater than that of the throttled portion, the attenuation portion being connected to one end portion of the common liquid chamber via the throttled portion, a discharge port formed in the pressure attenuation chamber, a discharge channel connected to the discharge port, and having a throttle in which a channel area of the discharge channel is decreased, and a dummy nozzle connected to the discharge port via the discharge channel.

Abstract: Dielectric heating is used to cause explosive nucleation of ink in an ink reservoir to expel a drop of ink from an inkjet print head. Conductive plates generate an alternating electric field at microwave frequencies across an ink reservoir causing the ink to heat. Since the ink is heated without heating the conductive plates, less heat dissipation of the inkjet print head is necessary.

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 fluid dispensing apparatus including a fluid ejector including a fluid reservoir having fluid, and configured to eject the fluid, a vacuum pump configured to create negative pressure in an activation mode and to create approximately no pressure in a deactivation mode, a meniscus pressure regulator configured to regulate the negative pressure received from the vacuum pump, a leaking member configured to reduce the negative pressure received from the vacuum pump towards or equal to atmospheric pressure in response to the vacuum pump being placed in the deactivation mode, and a back pressure regulator having a pressure reference port to receive the reduced negative pressure from the leaking member and the regulated negative pressure from the meniscus pressure regulator, the back pressure regulator configured to maintain a non-retraction negative pressure value to position a fluid meniscus in a non-retracted state and a retraction negative pressure value to position the fluid meniscus in a retracted state.

Abstract: A manifold assembly for a fluid-ejection device having multiple-fluid type fluid-ejection printheads organized in a page-wide array includes a lower-most deck and an upper-most deck. The lower-most deck is to supply a first type of fluid and a second type of fluid to the fluid-ejection printheads. The first type of fluid and the second type of fluid are exterior-most fluids ejected by the fluid-ejection printheads in relation to a direction of media movement through the fluid-ejection device. The upper-most deck is to supply a third type of fluid and a fourth type of fluid to the fluid-ejection printheads. The third type of fluid and the fourth type of fluid are interior-most fluids ejected by the fluid-ejection printheads in relation to the direction of media movement through the fluid ejection device.

Abstract: An inkjet print head including a substrate and a first film member stacked on the substrate to form an ink path, and a manufacturing method thereof. The first film member includes a path-defining layer made of a photosensitive material and formed with the ink path, and an adhesive layer made of a photosensitive material and used to stably bond the path-defining layer to the substrate. With this configuration, the path-defining layer and the adhesive layer can be simultaneously stacked on the substrate and also, can be patterned simultaneously.

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: An inkjet print head and a method for manufacturing the same are provided. The inkjet print head includes: an upper board having a pressure chamber; and a lower board including an upper silicon layer, an insulating layer, and a lower silicon layer, wherein the lower board includes a projection formed of the upper silicon layer and protruded into the interior of the pressure chamber in order to reduce the space of the pressure chamber, and a lower surface of the upper board and an upper surface of the lower silicon layer are fixed.

Abstract: An inkjet printhead includes: a substrate having a drive circuitry layer; a plurality of nozzle assemblies disposed on an upper surface of the substrate and arranged in one or more nozzle rows extending longitudinally along the printhead; a nozzle plate extending across the printhead; and a conductive track disposed on the nozzle plate which extends longitudinally along the printhead and parallel with the nozzle rows. The conductive track is connected to a common reference plane in the drive circuitry layer via a plurality of conductor posts extending between the drive circuitry layer and the conductive track.

Abstract: A printing device that forms a background by a first ink and images on the background by a second ink includes a head having first and second nozzle lines that eject, respectively, the first and second inks. The inks are ejected as the head moves, with respect to a medium, in a main scanning direction intersecting the first and second nozzle lines. A transport section transports the medium in a sub-scanning direction along the first and second nozzle lines. In an ejecting operation, the first and second inks are ejected in the relative movement in the main scanning direction and the relative transportation in the sub-scanning direction is performed. In the sub-scanning direction, first and second nozzle line used areas are set where the first and second inks, respectively, are ejected from the first and second nozzle lines. A nozzle unused area is defined therebetween.

Abstract: An inkjet printing device printhead assembly includes a housing. The housing has a surface. A well is defined within the surface of the housing and is adapted to disposal of a printhead die therewithin. The surface of the housing has one or more grooves. The grooves have ends. Some of the ends are adjacent to the wall. The grooves externally expose the printhead die.

Abstract: The present invention provides a print module, an information processing device, a print system, a print unit, an ink supply unit, a print method and program, all capable of quickly and easily meeting demands for a print medium size change, particularly to increased sizes, while at the same time coping with demands for faster printing speed. To this end, this invention constructs the print heads (811) in the form of print modules (M) so that their ink systems and signal systems are independent among the print modules. Each print module is set with identity information for its identification.

Abstract: An apparatus for printing a biomolecular droplet onto a substrate using an electric charge concentration effect includes; an electric field forming electrode including an accommodating area in which the biomolecular droplet including micro magnetic beads is accommodated and a nozzle formed on an end of the accommodating area through which the biomolecular droplet is discharged, a substrate disposed below the electric field forming electrode, including a grounded target surface onto which the biomolecular droplet discharged from the nozzle of the electric field forming electrode is deposited, a magnet disposed below the substrate which applies a magnetic force on the micro magnetic beads, and an open circuit type voltage applying unit electrically connected to the electric field forming electrode which applies a charge to the electric field forming electrode which generates an electrical force which causes the biomolecular droplet to be ejected onto the target surface of the substrate.

Abstract: A liquid jet head has an actuator with grooves arranged on a surface of a substrate. The actuator is configured to discharge liquid from nozzles communicating with respective ones of the grooves. A flow path member supplies the liquid to the grooves of the actuator. A damper member is provided between the actuator and the flow path member for coupling the actuator and the flow path member to each other. The damper member is bonded with an adhesive to each of the actuator and the flow path member.

Abstract: A recording head includes flange portions to which spacers are anchored on both sides of the recording head with a head case therebetween. Spacer attachment holes are provided in the flange portions in the center of the width direction orthogonal to a nozzle row in the recording head, and a round hole and an oblong hole relative to the spacers are provided in the flange portions in positions that are distanced from a center line in the width direction. Positioning holes for the flange portions are provided in the spacers in positions that correspond to the round hole and the oblong hole in the flange portions, and the spacers are anchored to the flange portions on both sides so as to be oriented symmetrically to each other, in a positioned state in which the positions of the positioning holes are aligned with the round hole and the oblong hole.

Abstract: A method and structure for depriming an ink jet printhead. To deprime ink from a printhead at a location between a nozzle (aperture) and a particulate filter (rock screen), a force (pressure) is applied to the ink. The pressure can either be a positive pressure applied to the nozzle from the outside of the aperture plate or a negative pressure (vacuum) applied at a location upstream from the particulate filter. Because openings within the particulate filter are each smaller than the nozzle, there exists a force which is sufficient to move a meniscus of the ink from the nozzle back to the particulate filter, but which is insufficient to move the meniscus beyond the particulate filter, for example due to a surface tension of the meniscus of the ink.

Abstract: A print head includes a fluid cavity and nozzle in fluid communication with the fluid cavity. A stopper is positioned adjacent the nozzle and adapted to control flow of fluid through the nozzle. An arm supports the stopper and is configured to pivotally move the stopper with respect to the nozzle. An electromagnet is positioned adjacent the arm and configured to move the arm toward the electromagnet to open the nozzle.

Abstract: A method of fabricating a MEMS inkjet type print head and the resulting device is disclosed. The method includes providing a driver component and separately providing an actuatable membrane component, the actuatable membrane component being formed in the absence of an acid etch removing a sacrificial layer. The separately provided actuatable membrane component is bonded to the driver component and a nozzle plate is attached to the actuatable membrane component subsequent to the bonding. Separately fabricating the components removes the need for hydrofluoric acid etch removal of a sacrificial layer previously required for forming the actuatable membrane with respect to the driver component.

Abstract: In accordance with aspects of the present disclosure, a printhead assembly arranged to dispense ultraviolet curable ink or gel ink and method thereof is disclosed. The printhead assembly includes a plurality of functional plates stacked together; a first adhesive layer arranged between adjacent functional plates to provide bonding between the plates; and a second adhesive layer arranged between adjacent function plates to provide chemical resistance to the ultraviolet curable ink or the gel ink.

Abstract: In an ink jet printing apparatus using many types of inks to execute bidirectional printing, if ejection opening rows for yellow, magenta, and cyan inks are symmetrically arranged, ejection opening rows for a black ink are arranged adjacent to the most inside ejection opening rows for the yellow ink. Thus, a difference in color between forward scanning and backward scanning is determined by a difference in coloring between the black ink and the yellow ink. In this case, a possible color drift attributed to bidirectional printing can be suppressed by selecting the inks so that the difference in coloring between the black ink and the yellow ink is smaller than that between the black ink and the other color inks.

Abstract: An ink jet recording head comprises a discharge port forming member that forms a discharge port used to discharge ink and a channel forming member that forms an ink channel communicating with the discharge port, at least either one of the channel forming member and the discharge port forming member comprising a substance having fluorine atoms and a rubber member composing a part of an ink passage continuous with the channel, the rubber member being cross-linked by an organic substance.

Abstract: A liquid dispenser includes a liquid supply channel, a liquid return channel; and a liquid dispensing channel. The liquid dispensing channel includes a wall. The wall includes a surface. A portion of the wall defines an outlet opening. The outlet opening includes a downstream edge relative to a direction of liquid flow through the liquid dispensing channel. The downstream edge is sloped relative to the surface of the wall of the liquid dispensing channel. A liquid supply provides liquid that flows from the liquid supply channel through the liquid dispensing channel to the liquid return channel. A diverter member selectively diverts a portion of the flowing liquid through the outlet opening of the liquid dispensing channel.

Abstract: A pneumatic dispenser (1) according to the present invention includes: a first plate (10) including a liquid supply unit (11), a first chamber (C1) connected to the liquid supply unit (11), and a liquid discharge unit (12) connected to the first chamber (C1), a flexible membrane (20) at least installed on the first chamber (C1) of the first plate (10) and establishing one side of the first chamber (C1), a second plate (30) including a second chamber (C2) at a side opposite to the first chamber (C1) while facing the first plate (10) with the flexible membrane (20) interposed there between and a bump (40) formed by protruding the liquid supply unit (11) toward the flexible membrane (20).

Abstract: A method for manufacturing a liquid discharge head provided with a substrate which has a layer made of silicon nitride and with a discharge port forming member which is disposed above the layer made of silicon nitride and has a discharge port for discharging liquid. The method includes providing a photosensitive layer that is to be the discharge port forming member above the layer made of silicon nitride, and forming the discharge port by exposing the photosensitive layer to i-line. The layer made of silicon nitride has a refractive index of 2.05 or more to light of a wavelength of 633 nm and irradiation with the i-line is performed in the exposure.

Abstract: A printhead having an ink ejection face, wherein at least part of the ink ejection face is coated with a polymeric material. The polymeric material is comprised of a polymerized siloxane incorporating nanoparticles. The printhead may be compatible with various printhead maintenance operations, ink characteristics and inkjet nozzle types.

Abstract: The liquid droplet spraying apparatus of the present invention includes a nozzle body which comprises a chamber for containing a predetermined amount of fluid supplied from an exterior, and a nozzle communicating with the chamber and spraying a liquid droplet of the fluid contained in the chamber to one side of the material to be printed; an electrode module unit which is arranged to be attached to or spaced apart from an outside of the nozzle body; an alternating current signaler which applies an alternating current signal to the electrode module unit; and a signal control unit which controls intensity and frequency of an output signal from the alternating current signaler.

Abstract: There is provided an inkjet print head assembly. The inkjet print head assembly includes an inkjet print head, and a first coating layer formed on the inkjet print head, and absorbing and radiating heat generated in the inkjet print head.

Abstract: Disclosed is an ejection chip for an inkjet printhead that includes at least one fluid via configured on the ejection chip for supplying fluid to one or more ejecting elements of the ejection chip. Each fluid via of the at least one fluid via includes a plurality of end-to-end coupled segments. Each segment of the plurality of end-to-end coupled segments is aligned at a skew angle with a consecutive segment. Further, the ejection chip includes a plurality of nozzles configured along a length of the each segment of the plurality of end-to-end coupled segments with a first nozzle spatial density. The configuration of the plurality of nozzles facilitates in achieving a predetermined print resolution with the first nozzle spatial density.

Abstract: A liquid ejection head includes a substrate having an energy-generating device configured to generate energy used for ejecting a liquid from an orifice; a transparent channel wall member forming an inner wall of a channel leading to the orifice; and an intermediate layer disposed between and in contact with a surface of the substrate and the channel wall member and having a refractive index different from a refractive index of the channel wall member. The intermediate layer has a first outer end surface forming contours of a symbol as viewed in a direction from the orifice toward the substrate and making a first angle with the surface of the substrate and a second outer end surface facing the channel and making a second angle with the surface of the substrate. The first angle is an obtuse angle. The second angle is smaller than the first angle.

Abstract: A nozzle plate cutting off method for cutting off the nozzle plate from a primary processing plate including a frame body, a nozzle plate which has multiple nozzle holes for ejecting droplets and is separately arranged inside the frame body, and a connection portion arranged at a clearance between the frame body and the nozzle plate to connect the frame body to the nozzle plate. In the nozzle plate cutting off method, a punching tool is used to punch out the nozzle plate at a connection region of the connection portion with the nozzle plate, there by cutting off the nozzle plate from the primary processing plate.