Abstract: A liquid ejection head module is disclosed. The liquid ejection head module includes first and second head units disposed in a first direction. The first and second head units have first and second rows of liquid ejecting heads that have a plurality of nozzles disposed in the first direction. The first and second rows of liquid ejecting heads are disposed in a second direction crossing the first direction. The first and second head each have a projecting portion. A connector is disposed on each of the first and second head units and each connector is disposed so that the connecting port is open at a side opposite from a liquid ejecting side.

Abstract: A liquid ejecting apparatus includes a plurality of head units, in each of which a plurality of recording heads are disposed so as to be aligned in a main scanning direction in a holding member as a frame body, and a plurality of nozzle openings for discharging ink being disposed in a sub scanning direction in each recording head. The head units are aligned such that center lines thereof in the main scanning direction differ from each other in the main scanning direction. M (M is a natural number) liquid ejecting heads are attachable to each holding member in the main scanning direction. N (M>N (N is a natural number)) liquid ejecting heads, which discharge liquid, among the M liquid ejecting heads are arranged so as to be close to a center side of an entire width of the head units in the main scanning direction.

Abstract: A liquid discharging head includes a liquid discharging head that has a nozzle plate on which a nozzle is formed, a cover that is provided at a periphery of the nozzle plate, and a liquid repellent film that are provided on surfaces of the nozzle plate and the cover which are opposed to a discharge target. In the liquid discharging head, a recess defined by the cover and the nozzle plate is filled with a filler and inner surfaces of the recess are covered by the filler.

Abstract: A liquid ejecting head unit includes a first nozzle group including a plurality of nozzles, a second nozzle group including another plurality of nozzles, a first flow path substrate including a first pressure chamber group including a plurality of first pressure chambers that eject a liquid from the nozzles of the first nozzle group upon being subjected to a pressure, a second flow path substrate including a second pressure chamber group including a plurality of second pressure chambers that eject a liquid from the nozzles of the second nozzle group upon being subjected to a pressure, and a supply substrate including a first liquid supply path through which the liquid is supplied to the first pressure chamber group, and a second liquid supply path through which the liquid is supplied to the second pressure chamber group.

Abstract: A method of manufacturing a flow path member includes inserting the first flow path member into each concave portion of the second flow path member and welding the first flow path member and the second flow path member in a circumferential direction of a region where the first flow path and the second flow path communicates each other; and providing two or more injecting portions which are provided with a gap wider than a gap between a wall surface of the concave portion which faces the first flow path member and a circumference surface of the first flow path member inserted into each concave portion which faces the wall surface, communicate with each concave portion, and are opened to the same side as the concave portion to have a concave shape to each concave portion in the second flow path member.

Abstract: A liquid ejecting head includes a flow channel forming substrate made of silicon and having pressure generating chambers that communicate with nozzles through which liquid is ejected, a piezoelectric elements that is disposed on the flow channel forming substrate so as to oppose the pressure generating chambers and varies a pressure of a liquid in the pressure generating chambers, and a protective substrate which has a holding section that houses the pressure generating unit and is bonded to a side of the flow channel forming substrate where the pressure generating unit is disposed, and the flow channel member is made of silicon and is provided with a thermistor that is disposed on a side of the flow channel member opposite to the flow channel forming substrate.

Abstract: A liquid ejecting head includes a nozzle plate, a flow path forming substrate, and a communication plate between the nozzle plate and the substrate and having a communication hole connecting a nozzle and a first opening of a pressure chamber. The first opening extends in a direction perpendicular to an arrangement direction of the pressure chambers. The first opening has a narrowed portion close to the communication hole. The communication hole has at least three edge lines which extend in a penetration direction. The communication plate is bonded to the substrate such that the ends of the edge lines at a surface close to the substrate are covered with the substrate that defines the narrowed portion on a surface close to the communication plate.

Abstract: A liquid ejecting apparatus includes a liquid ejecting head that ejects liquid in a manifold as liquid droplets from a nozzle opening; a supply path that supplies the liquid to the manifold; a pump unit that is disposed in the supply path and pumps the liquid; and a discharge path that discharges the liquid from the manifold, wherein a flow path resistance of the discharge path from the manifold is smaller than a flow path resistance of the supply path from the pump unit to the manifold.

Abstract: A liquid ejection head module is disclosed. The liquid ejection head module includes first and second head units disposed in a first direction. The first and second head units have first and second rows of liquid ejecting heads that have a plurality of nozzles disposed in the first direction. The first and second rows of liquid ejecting heads are disposed in a second direction crossing the first direction. The first and second head each have a projecting portion. A connector is disposed on each of the first and second head units and each connector is disposed so that the connecting port is open at a side opposite from a liquid ejecting side.

Abstract: A liquid discharging head includes a liquid discharging head that has a nozzle plate on which a nozzle is formed, a cover that is provided at a periphery of the nozzle plate, and a liquid repellent film that are provided on surfaces of the nozzle plate and the cover which are opposed to a discharge target. In the liquid discharging head, a recess defined by the cover and the nozzle plate is filled with a filler and inner surfaces of the recess are covered by the filler.

Abstract: A liquid ejecting head includes a flow path unit that has a nozzle line formed by a plurality of nozzles and includes a flow path communicating with the nozzles, a head case that forms a shared liquid flow path for supplying a liquid to the flow path of the flow path unit and is connected with the flow path unit, and a sheet-like heater that is mounted on a side surface of the head case and has a continuous heat-generatable heating element folded multiple times. A portion of the heating element located in a region close to a position opposing the shared liquid flow path is narrower than a portion of the heating element located at a position other than the region.

Abstract: In a clutch mechanism 310, in a state where a suction cap 350 reaches a contact position being in contact with a liquid ejecting head, only the rotation of a third gear 300 in one direction is transmitted to a third rotation shaft J3. During at least one of a period in which the suction cap 350 moves from the contact position to a separating position being separated from the liquid ejecting head and a period in which the suction cap 350 moves from the separating position to the contact position, the rotations of the third gear 300 in both directions of one direction and the other direction are transmitted to the third rotation shaft J3.

Abstract: A liquid ejecting head includes head main bodies each having a nozzle plate having nozzle openings, and a case member to which the head main bodies are fixed, and moves relatively in a first direction with respect to a recording sheet, wherein a cover head which covers the side surfaces of the head main body and a peripheral border of the nozzle plate is provided at each head main body, a protective wall is provided for each head main body between an end portion in the first direction of the case member and the head main body, a range in a second direction of the cover head is included in a range in the second direction of the protective wall, and the protective wall is located further on the case member side than the nozzle plate in a third direction.

Abstract: A liquid ejecting head unit includes a plurality of liquid ejecting heads each having a liquid ejecting surface provided with a nozzle row in which nozzle openings through which liquid is discharged are aligned in a first direction, and a holding member having a holder to which the liquid ejecting head is attached. Further, in the above liquid ejecting head unit, a positioning reference that specifies relative positions between the liquid ejecting heads is provided to the holder, and the liquid ejecting head is fixed to the holder being positioned in compliance with the positioning reference.

Abstract: A liquid ejecting head unit includes a liquid ejecting head that ejects liquid through a nozzle formed in a nozzle surface, and a holding member to which the liquid ejecting head is attached. Further, in the liquid ejecting head unit, the holding member includes a holder that supports the liquid ejecting head in a predetermine direction which is different from a direction of the nozzle surface of the liquid ejecting head, and a base portion that sticks out from the holder to a side which is parallel to the predetermined direction.

Abstract: A liquid supplying mechanism includes a flow channel forming member that has a base having a plate-like shape on which an upstream portion of a plurality of liquid supplying flow channels are formed so as to supply ink to each of a plurality of liquid ejection heads that are assembled to a liquid ejection head unit, and a plurality of connection members in a tubular shape that extend from one side of the of the base so as to form a downstream portion of the flow channels that individually communicate with the upstream portion of the respective liquid supplying flow channels and are disposed such that the distal end of the connection members correspond to the positions of the connection holes that are formed on the respective liquid ejection heads.

Abstract: A liquid ejecting head unit includes: a liquid ejecting head that has a fixing face to be used for attachment and that ejects a liquid from a nozzle; a head fixing member that has stiffness higher than that of the fixing face and that is secured to the fixing face on the liquid ejecting head; and a support member that has an attachment face to which the liquid ejecting head is attached through the head fixing member.

Abstract: A liquid ejection head module comprising: first and second head units disposed in a first direction, each of the first and second head units having first and second rows of liquid ejecting heads that comprises a plurality of nozzles disposed in the first direction, the first and second rows of liquid ejecting heads being disposed in a second direction crossing the first direction; a first concavity and convexity on edge of the first head unit; a second convexity and concavity on edge of the second head unit, the edge of the second head unit facing to the edge of the first head unit, at least one of the liquid ejecting heads being disposed at each of the first and second convexities, wherein the first concavity and convexity and the second convexity and concavity are disposed in mating relation to one another.

Abstract: A cam roller is engaged with a first engaged surface facing downward in a lifting and lowering direction of a cap and moves so as to follow the rotation trajectory about a shaft in the upward direction approaching a liquid ejecting head and in the downward direction separating from the liquid ejecting head. In addition, in the lifting and lowering direction of the cap, the cam roller is engaged from above with a second engaged surface which faces upward at a position lower than the first engaged surface and the first engaged surface has a plane portion as a non-overlapped area which does not overlap the second engaged surface in a direction perpendicular to both of the lifting and lowering direction and the direction of the shaft in a range that the cam roller follows the rotation trajectory about the shaft.

Abstract: A manufacturing method produces a liquid ejecting head including first and second flow path members having liquid flow paths that communicate with each other. An integrally-molded member is surrounds the second flow path member on the second flow path member side of the first flow path member to join the first and second flow path members together. A holding process defines a space portion for forming the integrally-molded member in a frame section. The frame section is brought into contact with a contact surface of a recessed portion in the face of the second flow path member opposite the first flow path member, with the first and second flow path members contacting each other such that the liquid flow paths communicate with each other. A molding process fills the space portion with resin, thereby molding the integrally-molded member, and joins the first and second flow path members together.