A liquid ejection head can suppress the influence of static electricity and the increase of a mounting force as well as downsize and save space of the liquid ejection head. The liquid ejection head is attachable and detachable with respect to a body connector provided on a liquid ejection apparatus body. Further, the liquid ejection head includes a head connector including a terminal which can be electrically connected to the body connector and a grounding member which is held at a coverage position where the terminal is covered in a non-contacting state with the body connector. The grounding member is formed with a deformable electroconductive member, and, as the head connector is made to move to a mounting position with respect to the body connector, is pressed by the body connector and is displaced to a position apart from the coverage position. Thus, the body connector can be connected with the terminal.

A liquid ejection head includes a liquid ejection portion configured to eject a liquid and a liquid supplying member. The liquid supplying member includes a first face, a second face that is the back face of the first face, a first connecting portion provided on the first face and fluidly connected to a main body, a second connecting portion provided on the second face and fluidly connected to the liquid ejection portion, and an interior channel communicating the first connecting portion and the second connecting portion. The interior channel includes a portion extending toward the first face and a portion extending toward the second face.

An inkjet printing apparatus includes a print head, to which a protective member configured to protect an ejection opening surface is attachable, and a head holder configured to hold the print head detachably. The inkjet printing apparatus further includes a guide portion provided in the head holder and configured to guide, in a width direction, the print head with the ejection opening surface protected by the protective member. The guide portion guides the print head with the protective member attached up to a predetermined position in the width direction and guides only the print head ahead of the predetermined position to prevent the protective member from exceeding the predetermined position.

A head position adjustment mechanism including: a head fixing section for fixedly supporting a head section; a linear-motion mechanism to which the head fixing section has been attached; and a bracket to which the linear-motion mechanism has been attached, the bracket has a tapered pin attached to the bracket and a plunger attached to the bracket, the tapered pin and the plunger facing each other, the tapered pin has its tapered part brought into contact with a first side end of the head fixing section in the X-axis direction, the plunger biases a second side end of the head fixing section in the X-axis direction toward the tapered pin, and moving up and down the tapered pin causes the head fixing section to linearly move in the X-axis direction so that the position of the head fixing section is adjusted.

A print device includes a head unit holding a heat sink, a head holding member holding the head unit, a platen roller, a support shaft supporting the head holding member to pivot between a close position and a separated position, an urging member, and an adjustment mechanism including an adjustment shaft and an eccentric cam. The separated position is a position where the print head is separated from the platen roller than the close position. The urging member urges the head unit and applies a pressing load pressing the print head against the platen roller. The eccentric cam rotates around the adjustment shaft and coming into contact with the head holding member in a state of being offset with respect to the adjustment shaft. The adjustment mechanism adjusts a position of heating elements of the heat sink with respect to the platen roller by rotating of the eccentric cam.

A page-wide liquid ejection head configured to be removably installed in a main body of a liquid ejection apparatus includes a connection part for liquid through which a liquid is supplied from the main body and an electrical connector through which an electric signal is supplied from the main body. In the liquid ejection head, the connection part for liquid and the electrical connector are located at one side of the liquid ejection head in the longitudinal direction and are provided to face different directions from each other.

A liquid ejecting head includes a pressure generating unit in order to eject liquid from a nozzle that is provided on a nozzle surface, a case in order to accommodate the pressure generating unit, and a guide portion that is provided on a side surface of the case, in which in a case of being viewed from a first direction orthogonal to the nozzle surface, the guide portion has projecting portions facing one end side in a second direction along the nozzle surface, and recessed portions facing the other end side in the second direction.

A mounting assembly (1) for mounting a plurality of inkjet print modules in an adjoining relationship along a longitudinal direction of the mounting assembly (1) comprises a linear guide (13, 14) extending in the longitudinal direction for supporting the plurality of modules such that the modules are movable along the linear guide (13, 14). It further comprises for each of the plurality of modules a carrier (100.1 . . . 4) for mounting an inkjet print head including an array of nozzles formed on a nozzle face, wherein the carriers (100.1 . . . 4) are supported on the linear guide (13, 14) such that they are movable along the linear guide (13, 14), wherein in a mounted configuration of the inkjet print heads their nozzle face is arranged on a first side of the linear guide (13, 14). Each carrier (100.1 . . . 4) comprises a first adjustment mechanism for adjusting a distance of the carriers 100.1 . . . 4) of two adjoining modules of the plurality of modules, the first adjustment mechanism comprising a first control member having an operating section for mechanically cooperating with a tool for adjusting the distance. Each carrier (100.1 . . . 4) further comprises a second adjustment mechanism for adjusting an angle position of the inkjet print head mounted to the carrier (100.1 . . . 4) with respect to an axis perpendicular to the longitudinal direction, the second adjustment mechanism comprising a second control member having an operating section for mechanically cooperating with a tool for adjusting the angle position. The operating sections of the control members of the first and of the second adjustment mechanism are accessible from the first side of the linear guide (13, 14).

An inkjet printing apparatus is provided capable of attaching and detaching of a print head with a mechanism that is easily operable and simple, while preventing an erroneous operation. For the purpose, it is configured so that the press/release for the print head is possible along with movement of the joint member. Further, when the joint member is connected, the connection of the joint member is performed after pressing the print head, and when the connection of the joint member is released, the pressure on the print head is released after releasing the connection of the joint member.

The invention is directed to a device (1) and a method for adjusting printheads (2) relative to one another, the printheads each being provided with a nozzle plate having multiple nozzles for printing, and having at least one round hole and/or at least one elongated hole in this nozzle plate for manufacturing and/or assembly purposes, including and using an assembly template for multiple printheads (2), wherein, for each printhead (2), at least one counterpart is provided, preferably in the form of a pin, that fits exactly into at least one round hole and/or at least one elongated hole in the corresponding nozzle plate, so that when the printheads (2) are inserted into the assembly template in such a way that the pairs of round hole counterparts and elongated hole counterparts engage with the corresponding round holes and elongated holes in the nozzle plate, the nozzles of all printheads (2) are aligned with one another in the desired manner.