An ink jet head includes a pressure chamber, a main flow path, an actuator, a nozzle, a first communication flow path, and a filter. The pressure chamber is filled with an ink. The main flow path supplies the ink to the pressure chamber. The actuator changes the pressure of the ink filled in the pressure chamber. The nozzle is connected to the pressure chamber and ejects the ink filled in the pressure chamber by driving of the actuator. The first communication flow path connects the pressure chamber to the main flow path. The filter is disposed at a predetermined position between the nozzle and the vicinity of a first boundary of the main flow path and the first communication flow path, and the filter captures an impurity in the ink which has a size larger than the diameter of the nozzle.

A liquid ejecting head unit which includes a liquid ejecting head which includes a nozzle surface provided with nozzles, the nozzle surface being on a plane defined by two directions including a first and a second directions intersecting each other, a wiping unit comprising a wiper parallel to the first direction and configured to perform relative movement in the second direction between the wiper and the nozzle surface to wipe the nozzle surface, a recess defined by an edge provided along the first direction on the nozzle surface, and a controller for filling the recess with a liquid which spills from at least one nozzle among the nozzles, and for wiping the nozzle surface after wiping the recess.

A printhead device includes firing chambers, nozzles, and shipping fluid. The shipping fluid includes a shipping fluid density and a shipping fluid viscosity greater than a corresponding ink density and ink viscosity of an ink that will be ejected from the firing chambers and through the nozzles.

An ink jet recording apparatus includes a recording head, a wiper member, a cleaning liquid supply device, and a controller. The recording head includes an ink ejection surface having an ink ejection port from which ink is ejected. The cleaning liquid supply device includes a cleaning liquid supply surface having a cleaning liquid supply port from which cleaning liquid for wiping the ink ejection surface with the wiper member is supplied, and is located upstream of the ink ejection surface in a wiping direction. The controller controls a cleaning operation including squeezing out the cleaning liquid containing bubbles from the cleaning liquid supply port, and moving the wiper member carrying the cleaning liquid containing bubbles, in the wiping direction from a movement start position to an end position ahead of the ink ejection surface.

A maintenance device configured to maintain a head configured to discharge a first liquid, the maintenance device includes a cap configured to contact a nozzle surface of the head, a storage configured to store a second liquid to be supplied into the cap, a supply device configured to supply the second liquid into the cap, a receptacle configured to receive the second liquid supplied into and overflown from the cap, and a collection device configured to collect the second liquid received by the receptacle.

An inkjet printhead includes a faceplate mounted to a printhead body. The faceplate has a first area in which an array of inkjet nozzle openings is positioned. The area is covered with a hydrophobic coating. A second area of the faceplate outside of the array of inkjet nozzle openings is covered with a first hydrophilic coating that does not contact the hydrophobic coating covering the first area. A third area of the faceplate between the first area and the second area is covered with a second hydrophilic coating. One end of the third area contacts the hydrophobic coating and another end of the third area contacts the first hydrophilic coating to pull ink emitted onto the hydrophobic coating during a purge operation to the second area of the faceplate.

An ink jet recording head includes an ejection chip in which a plurality of ejection orifices performing ejection are arranged; an external wiring board including an external wiring for applying an electric signal to the ejection chip from an outside; an electrical bonding portion where the external wiring of the external wiring board and the ejection chip are electrically bonded to each other; and a resin sealing portion that seals the electrical bonding portion, in which a corner of the external wiring board where a first end surface on an ejection chip side and a side end surface connected to the first end surface intersect has a chamfered portion which is chamfered, and the chamfered portion is positioned within a width of the ejection chip in an ejection orifice arrangement direction.

A channel member of a liquid ejection head includes an ejection surface, an outer peripheral surface that is connected to an outer edge of the ejection surface and that faces outside of the ejection surface in a direction along the ejection surface, and a plurality of ejection holes that open in the ejection surface. The channel member includes a plurality of concave portions in the outer edge of the ejection surface, the plurality of concave portions being recessed in the ejection surface and being recessed in the outer peripheral surface. With the configuration, it is possible to collect, in the concave portions, a liquid (such as ink mist) that has leaked out from the ejection holes.

A liquid receiving device includes a liquid receiving portion configured to receive a liquid ejected from a liquid ejecting portion via an opening portion, a first discharge flow path configured to discharge the liquid in the liquid receiving portion, and a second discharge flow path configured to discharge the liquid in the liquid receiving portion. The liquid receiving portion includes an absorbing member, a first communication portion that has a first discharge port open to an inside of the liquid receiving portion, and a second communication portion that has a second discharge port open to an inside of the liquid receiving portion, the first communication portion is provided at a position where the first discharge port is in contact with the absorbing member, and the second communication portion is provided at a position where the second discharge port is not in contact with the absorbing member.

A linear motion extensible device (21) includes: rod-shaped members (31); and a rotating plate (42) rotating in a wind-up direction to wind up the rod-shaped members (30) while rotating them around a coupling rotational shaft (32) and rotating in a wind-off direction to push out the rod-shaped members (31) so as to arrange them in a line, wherein the rod-shaped member (31) has: an intermediate shaft (33) and an angle regulating part (34) which regulates widening an angle between the adjacent rod-shaped members (31), the rotating plate (42) has engagement grooves (44) engaged with the coupling rotational shaft (32) and the intermediate shaft (33), and when the rotating plate (42) is rotated in the wind-off direction, the coupling rotational shaft (32) and the intermediate shaft (33) come into contact with an inner surface (45) of the engagement groove (44), are pushed out, and leave the engagement grooves (44).