Abstract: A liquid ejection head includes a substrate in which at least four inlets to which a liquid is supplied are arranged, and an ejection port forming member provided with an ejection port from which the liquid supplied to the inlets is ejected and provided in the substrate. The inlets are each formed along a first direction and are arranged in a second direction which crosses the first direction. A plurality of inter-inlet areas sandwiched between the inlets adjacent to each other has at least two types of areas different in distance between the inlets adjacent to each other, and, among the inter-inlet areas, an area positioned on each of both ends of the substrate is different from an area in which the distance between the inlets is the shortest.

Abstract: In a liquid discharge head, a third discharge port array group C1 which discharges a liquid of cyan, a second discharge port array group M1 which discharges a liquid of magenta, a fourth discharge port array group G which discharges a liquid of gray, a first discharge port array group Y which discharges a liquid of yellow, a second discharge port array group M2 which discharges a liquid of magenta, a third discharge port array group C2 which discharges a liquid of cyan are arranged in this order, in a direction. Each of discharge port arrays of the fourth discharge port array group G is formed of a plurality of discharge ports having a diameter smaller than that of a plurality of discharge ports which constitute first discharge port arrays of the second and third discharge port array groups C1, C2, M1 and M2.

Abstract: A liquid discharging head includes a recording element substrate configured to discharge a liquid; an electric wiring substrate that is provided with a lead terminal that is connected to the recording element substrate; and a supporting member to which the electric wiring substrate is bonded. The electric wiring substrate is bonded to the supporting member with two or more types of adhesives including at least a first adhesive and a second adhesive whose volume resistivity is higher than that of the first adhesive, a bond strength of the first adhesive is higher than a bond strength of the second adhesive, and, at the supporting member, the second adhesive is applied such that the second adhesive is provided closer to the lead terminal than the first adhesive.

Abstract: A liquid ejection head includes a liquid ejection section including an element substrate having ejection ports for ejecting liquid and an electrical wiring substrate connected to a contact of the liquid ejection apparatus to transmit signals to the element substrate, a liquid tank loading section including a containing space for containing a liquid tank storing liquid to be supplied to the element substrate and a lock member having an engaging part for engaging with a holding part of the liquid tank and a fixation means for rigidly securing the liquid election section and the liquid tank loading section in position.

Abstract: A liquid ejection head includes a recording element substrate that ejects liquid, and an element-substrate support member to which the recording element substrate is bonded with an adhesive. A groove to be filled with the adhesive is provided in a bonding region of the element-substrate support member, at which the element-substrate support member and the recording element substrate are bonded together, along a part or an entirety of the outer circumference of the recording element substrate.

Abstract: A liquid ejection cartridge having a liquid ejection section for ejecting liquid includes an electrical contact section to be electrically connected to a terminal section of an apparatus main body, the electrical contact section being formed by a plurality of printed substrates arranged on a same surface.

Abstract: A liquid ejection head includes an ejection section for ejecting liquid; an electrical wiring substrate having terminals to be electrically connected to the respective electrical contacts of a liquid ejection apparatus; a first loading section to be loaded with a first liquid storing container; and a second loading section to be loaded with a second liquid storing container having a width greater than that of the first liquid storing container. The wall of the liquid ejection head is provided with a rib extending in the height direction on the surface opposite to the surface mounted by the electrical wiring substrate; and the second loading section and the rib are arranged at respective positions where the second loading section and the rib overlap with each other as viewed in the direction of loading the second liquid storing container in the second loading section.

Abstract: A liquid ejection head includes a recording element substrate for ejecting liquid, a mounting section to be loaded with a liquid container, and a connector equipped with a contact spring capable of expanding and contracting in an axial direction to be brought into contact with a contact substrate provided on the liquid container. The axial direction of the contact spring is inclined relative to the direction of loading the liquid container in the mounting section.

Abstract: A liquid discharging head includes a recording element substrate configured to discharge a liquid; an electric wiring substrate that is provided with a lead terminal that is connected to the recording element substrate; and a supporting member to which the electric wiring substrate is bonded. The electric wiring substrate is bonded to the supporting member with two or more types of adhesives including at least a first adhesive and a second adhesive whose volume resistivity is higher than that of the first adhesive, a bond strength of the first adhesive is higher than a bond strength of the second adhesive, and, at the supporting member, the second adhesive is applied such that the second adhesive is provided closer to the lead terminal than the first adhesive.

Abstract: A liquid ejection cartridge having a liquid ejection section for ejecting liquid includes an electrical contact section to be electrically connected to a terminal section of an apparatus main body, the electrical contact section being formed by a plurality of printed substrates arranged on a same surface.

Abstract: A liquid ejection head including: an ejection section for ejecting liquid; an electrical wiring substrate having terminals to be electrically connected to the respective electrical contacts of a liquid ejection apparatus; a first loading section to be loaded with a first liquid storing container; and a second loading section to be loaded with a second liquid storing container having a width greater than the first liquid storing container; the wall of the liquid ejection head being provided with a rib extending in the height direction on the surface opposite to the surface mounted by the electrical wiring substrate; the second loading section and the rib being arranged at respective positions where the second loading section and the rib overlap with each other as viewed in the direction of loading the second liquid storing container in the second loading section.

Abstract: A liquid ejection head includes a recording element substrate for ejecting liquid, a mounting section to be loaded with a liquid container, and a connector equipped with a contact spring capable of expanding and contracting in an axial direction to be brought into contact with a contact substrate provided on the liquid container. The axial direction of the contact spring being inclined relative to the direction of loading the liquid container in the mounting section.

Abstract: A liquid ejection head includes a liquid ejection section including an element substrate having ejection ports for ejecting liquid and an electrical wiring substrate connected to a contact of the liquid ejection apparatus to transmit signals to the element substrate, a liquid tank loading section including a containing space for containing a liquid tank storing liquid to be supplied to the element substrate and a lock member having an engaging part for engaging with a holding part of the liquid tank and a fixation means for rigidly securing the liquid election section and the liquid tank loading section in position.

Abstract: A liquid ejection head includes a recording element substrate that ejects liquid, and an element-substrate support member to which the recording element substrate is bonded with an adhesive. A groove to be filled with the adhesive is provided in a bonding region of the element-substrate support member, at which the element-substrate support member and the recording element substrate are bonded together, along a part or an entirety of the outer circumference of the recording element substrate.

Abstract: A manufacturing method of a liquid ejection head includes a step of performing a first exposure to form a first ejection orifice row and a step of performing a second exposure to form a second ejection orifice row in which ejection orifices are arranged in a row with ejection orifices that form the first ejection orifice row through a connection portion. In an ejection orifice row formed by the first and the second ejection orifice rows, regarding the distances between the centers of ejection orifices in an arrangement direction of the ejection orifices on opening surfaces of the ejection orifices, the ejection orifices are formed so that a distance between the centers of two ejection orifices adjacent to each other with the connection portion in between is longer than a distance between the centers of two ejection orifices adjacent to each other without the connection portion in between.