Abstract: The invention relates to a liquid ejecting head that includes a liquid ejecting head body, a liquid-supply member, and a plurality of filters. The liquid-supply member has a plurality of liquid-supply passages formed inside the liquid-supply member used for communicating the liquid to the liquid ejecting head body. The liquid-supply member includes a first and second separate member which are adhered to each other so as to make up the liquid-supply member. A plurality of first and second filters are provided across the plurality of liquid-supply passages. The plurality of liquid-supply passages includes first liquid-supply passages that have the first filters on the surface of the first separate member and second liquid-supply passages that have the second filters on the surface of the second separate member.

Abstract: A liquid ejecting head comprising a head body capable of ejecting liquid in from pressure generating chamber through nozzles by driving the pressure generating chamber, a plurality of head members adhered to the head body, the head members comprising a head casing having a channel for supplying the liquid to the pressure generating chamber and a plurality of notches for allowing a first and second adhesive to be filled in a plurality of gaps between the head members adhered to the head body, and a fixed member which is adhered to the liquid ejecting surface of the head members, wherein the first and second adhesive have different viscosities.

Abstract: A liquid ejecting head comprising a head body capable of ejecting liquid in from pressure generating chamber through nozzles by driving the pressure generating chamber, a plurality of head members adhered to the head body, the head members comprising a head casing having a channel for supplying the liquid to the pressure generating chamber and a plurality of notches for allowing a first and second adhesive to be filled in a plurality of gaps between the head members adhered to the head body, and a fixed member which is adhered to the liquid ejecting surface of the head members, wherein the first and second adhesive have different viscosities.

Abstract: The invention provides a liquid ejecting head unit that includes: a liquid ejecting head that has pressure generation chambers and pressure generators, the pressure generation chambers being in communication with nozzle openings from which liquid is ejected, the pressure generator causing a pressure change in the pressure generation chamber; a fixing member that is adhered to the liquid ejecting surface of the liquid ejecting head, the liquid ejecting surface having the nozzle openings formed therein, the fixing member having an exposure opening portion that exposes the nozzle openings; and a recording portion that has convexity and concavity so as to record head information, the recording portion being provided at a region of the liquid ejecting surface at which the fixing member is adhered.

Abstract: A method of manufacturing a liquid ejecting head unit which includes a liquid ejecting head having a liquid ejection surface through which a nozzle opening is opened to eject a liquid and a support member adhered onto the liquid ejection surface of the liquid ejecting head by an adhesive, the method including: forming a lyophobic film on the liquid ejection surface; forming a non-lyophobic area having no lyophobic film in an area in which the liquid ejection surface formed with the lyophobic film is adhered to the support member; performing primer processing of coating a primer liquid onto the non-lyophobic area; and adhering the support member to the non-lyophobic area of the liquid ejection surface using an adhesive.

Abstract: A bonding structure including bonding wires having a diameter A, bonding pads to which the bonding wires are connected, and bonding portions which, as sites of connection, are arranged on a straight line, and wherein the pitch P of the bonding portions is set at XA+? or more where 1.80?X?2.1, A is as defined above, and ? denotes a variation for the bonding procedure.

Abstract: Provided is a liquid jet head unit and a liquid jet device which are capable of improving precision in aligning nozzle orifices and accordingly printing quality. Included are: a liquid jet head having a nozzle plate provided with nozzle rows constituted of nozzle orifices through which liquid droplets are ejected, and which are arranged side by side; a head case fixed to the liquid jet head at the side of liquid supply ports; and a cover head provided to a liquid-droplet ejecting surface of the liquid jet head. An exposed area in the nozzle plate, which area is not covered by the cover head, includes: nozzles provided respectively with water repellent films in peripheries of their nozzle orifices; and nozzles which have the same shape as the former nozzles, and which respectively have non-water repellent portions provided with no water repellent films in peripheries of their nozzle orifices.

Abstract: Provided is a liquid jet head unit and a liquid jet device which are capable of improving precision in aligning nozzle orifices and accordingly printing quality. Included are: a liquid jet head having a nozzle plate provided with nozzle rows constituted of nozzle orifices through which liquid droplets are ejected, and which are arranged side by side; a head case fixed to the liquid jet head at the side of liquid supply ports; and a cover head provided to a liquid-droplet ejecting surface of the liquid jet head. An exposed area in the nozzle plate, which area is not covered by the cover head, includes: nozzles provided respectively with water repellent films in peripheries of their nozzle orifices; and nozzles which have the same shape as the former nozzles, and which respectively have non-water repellent portions provided with no water repellent films in peripheries of their nozzle orifices.

Abstract: An ink cartridge having a container for storing ink therein and having an ink supply port formed at a leading end side in an insertion direction of the container, a memory device disposed on a first of two opposite surfaces parallel to the insertion direction of the container, the memory device having an electrode for electrical connection to the recording device; a retaining member disposed on the first surface and located at a trailing end side relative to the memory device in the insertion direction, the retaining member serving to selectively engage with the recording device; and another retaining member disposed on the second surface and which also serves to selectively engage with the recording device.

Abstract: To provide a liquid ejecting head that has a simple structure for attaching an introduction needle holder to a case member and whose width in the main scanning direction can be reduced, and a method for assembling the same. A case member includes a head unit attachment portion to which a head unit is attached, a holder attachment portion that is located on the opposite side from the head unit attachment portion and to which the introduction needle holder is attached, and a supporting wall provided on one side of the holder attachment portion. The supporting wall has an engaging claw on the introduction needle holder side surface thereof. The introduction needle holder has an engaged claw capable of being engaged with the engaging claw at one end thereof. There is formed an introduction needle holder fixing portion that fixes the other end of the introduction needle holder to the holder attachment portion of the case member.

Abstract: A liquid-jet head has a passage-forming substrate with an individual path including a pressure-generating chamber communicating with a nozzle orifice which ejects a liquid. The head also has a pressure-generating element, a protection plate, a reservoir, a compliance plate, a through hole, an introducing path, and a flexible portion with flexibility in a region of the compliance plate, the region facing the reservoir, which region covers at least from a part facing the through hole to a part surrounding the introducing path.

Abstract: An ink cartridge having a container for storing ink therein and having an ink supply port formed at a leading end side in an insertion direction of the container, a memory device disposed on a first of two opposite surfaces parallel to the insertion direction of the container, the memory device having an electrode for electrical connection to the recording device; a retaining member disposed on the first surface and located at a trailing end side relative to the memory device in the insertion direction, the retaining member serving to selectively engage with the recording device; and another retaining member disposed on the second surface and which also serves to selectively engage with the recording device.

Abstract: A liquid-jet head includes: a plurality of head bodies, each having: a nozzle plate having a plurality of nozzles bored therein; a passage-forming substrate having a pressure generating chamber formed therein, which communicates with the nozzle and receives a pressure for use in ejecting a liquid droplet from a pressure generating element; and a head case disposed on the passage-forming substrate at a surface opposite to the nozzle plate and having paths for supplying liquid to the pressure generating chamber therethrough; and a fixing member bonded onto a side of the nozzle plate of each of the plurality of head bodies, to positionally fix the head bodies thereto at predetermined intervals, wherein a reinforcing portion made of a predetermined adhesive agent, which is charged in a clearance between the head bodies fixed to the fixing member, followed by setting, is disposed at the clearance.

Abstract: An ink cartridge having a container for storing ink therein and having an ink supply port formed at a leading end side in an insertion direction of the container, a memory device disposed on a first of two opposite surfaces parallel to the insertion direction of the container, the memory device having an electrode for electrical connection to the recording device; a retaining member disposed on the first surface and located at a trailing end side relative to the memory device in the insertion direction, the retaining member serving to selectively engage with the recording device; and another retaining member disposed on the second surface and which also serves to selectively engage with the recording device.

Abstract: A head cover of a recording head includes an opening portion for exposing a nozzle face of the liquid ejection nozzle of a flow path unit, a frame portion provided at a surrounding of the opening portion to cover a peripheral edge portion of the flow path unit to be supported by the mounting face, protective wall portions erected integrally from the frame portion to be formed to cover side faces of the head case, and support portions formed integrally with the protective wall portions and bent from the protective wall portions to extend in surrounding directions for fixing to the head case and the protective wall portion is formed to widen a width thereof toward a side of the support portion.

Abstract: A liquid-jet head, including: a plurality of head bodies each furnished with a nozzle plate having a plurality of nozzles formed therein; a joining member, adhered to the nozzle plate via an adhesive agent, for binding and fixing the plurality of head bodies; an opening formed in a region of the joining member corresponding to the nozzles; and a protrusion formed in an edge portion of the opening facing the nozzle plate, and protruding toward the nozzle plate, wherein when the joining member is joined to the nozzle plate via the adhesive agent, the protrusion is allowed to bite into the nozzle plate.

Abstract: A liquid jet head includes: a passage-forming substrate provided with at least two rows of pressure generating chambers each communicating with a nozzle orifice; and piezoelectric elements for causing pressure change in the pressure generating chambers. The piezoelectric elements are provided on one side of the passage-forming substrate with a vibration plate interposed therebetween. On a joint plate joined to the piezoelectric element side of the passage-forming substrate, driving ICs for driving the piezoelectric elements are provided in regions facing the respective rows of the pressure generating chambers. For each row of the pressure generating chambers, at least one penetrated hole, in which lead electrodes led from the piezoelectric elements are exposed, is provided in a region of the joint plate, the region corresponding to a region between the rows of the pressure generating chambers. A beam portion is formed between the adjacent penetrated holes.

Abstract: An alignment jig including: a base jig which is used when aligning and bonding a nozzle plate which is provided with nozzle orifices ejecting liquid of a liquid-jet head with/to a fixing member holding a nozzle plate side of the plurality of liquid-jet heads, and which is provided with an optical system on a bottom plane thereof; a mask having transparency, one plane of which is bonded to a plane of the base jig opposite to the optical system, and the other plane of which is provided with a reference mark for being aligned with an alignment mark provided for the nozzle plate; and a spacer jig which is bonded to a plane of the mask where the reference mark of the mask is provided, and which holds the fixing member.

Abstract: An alignment jig including: a base jig which is used when bonding a nozzle plate provided with nozzle orifices which eject liquid in a liquid-jet head to a fixing member holding a nozzle plate side of a plurality of the liquid-jet heads, and which is provided with a penetrated hole in a thickness direction in a region facing a reference mark to be aligned with an alignment mark provided on the nozzle plate as well as the fixing member is held on one plane of the base jig; and a mask which is provided on the other plane of the base jig and has transparency, and where a protrusion protruding in the penetrated hole is formed with the reference mark provided on an edge plane of the mask.

Abstract: A liquid ejection head including: a head main body including: a cavity unit including a passage forming base plate forming a liquid passage from a common liquid chamber to a nozzle opening via a pressure chamber; and a pressure generating source generating a change of pressure of liquid in the pressure chamber to eject the liquid in the pressure chamber as a liquid droplet from the nozzle opening; and a case member to which the head main body is attached and which includes: a first member provided with a first atmosphere opening passage; and a second member laminated on the first member and provided with a second atmosphere opening passage, wherein the first and second atmosphere opening passages communicate with each other under the laminated state and are opened to atmosphere.