Abstract: A liquid ejection head includes an energy generating element configured to generate energy used for ejection of a liquid, a print element board including an electroconductive anti-cavitation film provided to cover the energy generating element, and a connection board electrically connected to the anti-cavitation film and including a connection pad electrically connectable from outside.

Abstract: A liquid discharge head includes a recording element substrate including a recording element, an electronic substrate disposed outside the recording element substrate, an electric element mounted on the electronic substrate, a housing that supports the recording element substrate and the electronic substrate and is made of a first resin material, and a cover member that surrounds and shields the electric element and is made of a second resin material, wherein the second resin material has higher heat resistance than the first resin material.

Abstract: A liquid ejecting head and a liquid ejecting apparatus that can suppress the influence of noise on a control signal includes a plurality of terminals for being electrically connected with a contact point provided in a liquid ejecting apparatus, and a liquid ejecting element substrate having a liquid ejecting element formed for ejecting liquid in response to a control signal transmitted from the liquid ejecting apparatus. The plurality of terminals includes signal terminals and ground terminals for control, for controlling the liquid ejecting element, and the signal terminals and the ground terminals for control are arranged at positions closer to the liquid ejecting element substrate than other terminals.

Abstract: A liquid ejecting head and a liquid ejecting apparatus are designed so as to suppress the influence of noise on control signals. The liquid ejecting head has a plurality of terminals electrically connected with a contact point provided in the liquid ejecting apparatus, and a liquid ejecting element substrate having a liquid ejecting element formed for ejecting liquid in response to the control signals transmitted from the liquid ejecting apparatus. A power source terminal for drive and a ground terminal for drive, which are provided for driving the liquid ejecting element, are arranged adjacent to each other, and a power source wiring that connects the power source terminal for drive with the liquid ejecting element substrate and a ground wiring that connects the ground terminal for drive with the liquid ejecting element substrate are at least partially arranged in parallel.

Abstract: In a liquid ejection head and a liquid ejection apparatus that can suppress deterioration of image quality, a plurality of second beam-shaped member is provided on the downstream side of a first beam-shaped member in a flow passage connected to an ejection element substrate. The first beam-shaped member divides the flow passage into two flow passages in a liquid-flowing direction and the second beam-shaped member sandwich a line extending from the first beam-shaped member in the liquid-flowing direction.

Abstract: In a liquid ejection head and a liquid ejection apparatus capable of reducing the occurrence of ejection malfunction, in a connecting section where a first flow channel and a second flow channel connect, a projecting member is provided on the flow channel wall forming the second flow channel.

Abstract: A liquid ejection head includes an energy generating element configured to generate energy used for ejection of a liquid, a print element board including an electroconductive anti-cavitation film provided to cover the energy generating element, and a connection board electrically connected to the anti-cavitation film and including a connection pad electrically connectable from outside.

Abstract: A liquid discharge head includes a recording element substrate including a recording element, an electronic substrate disposed outside the recording element substrate, an electric element mounted on the electronic substrate, a housing that supports the recording element substrate and the electronic substrate and is made of a first resin material, and a cover member that surrounds and shields the electric element and is made of a second resin material, wherein the second resin material has higher heat resistance than the first resin material.

Abstract: Provided are a liquid ejection head and a liquid ejection apparatus which make it possible to suppress deterioration of image quality. Therefore, a plurality of second beam-shaped members is provided on the downstream side of a first beam-shaped member which divides a flow passage connected to an ejection element substrate into two flow passages in a liquid-flowing direction so as to sandwich a line extending the first beam-shaped member in the liquid-flowing direction.

Abstract: To provide a liquid ejecting head and a liquid ejecting apparatus that can suppress the influence of noise on a control signal. The liquid ejecting head has: a plurality of terminals for being electrically connected with a contact point provided in a liquid ejecting apparatus; and a liquid ejecting element substrate having a liquid ejecting element formed for ejecting liquid in response to a control signal transmitted from the liquid ejecting apparatus. The plurality of terminals includes a signal terminal and a ground terminal for control, for controlling the liquid ejecting element; and the signal terminal and the ground terminal for control are arranged in positions closer to the liquid ejecting element substrate than other terminals.

Abstract: Provided is a liquid ejection head and a liquid ejection apparatus capable of reducing the occurrence of ejection malfunction. In a connecting section where a first flow channel and a second flow channel connect, a projecting member is provided on the flow channel wall forming the second flow channel.

Abstract: To provide a liquid ejecting head and a liquid ejecting apparatus that can suppress the influence of noise on a control signal. The liquid ejecting head has: a plurality of terminals for being electrically connected with a contact point provided in a liquid ejecting apparatus; and a liquid ejecting element substrate having a liquid ejecting element formed for ejecting liquid in response to a control signal transmitted from the liquid ejecting apparatus. A power source terminal for drive and a ground terminal for drive, for driving the liquid ejecting element are arranged adjacent to each other; and a power source wiring that connects the power source terminal for drive with the liquid ejecting element substrate, and a ground wiring that connects the ground terminal for drive with the liquid ejecting element substrate are at least partially arranged in parallel.