Patent ID: 11964486
Assignee: CANON KABUSHIKI KAISHA
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A liquid ejection head comprising:
a recording element substrate including an energy generating element configured to generate energy for ejecting liquid from an ejection port;
an electrical wiring board electrically connected to the recording element substrate to supply an electric signal for driving the energy generating element;
a first support member supporting the recording element substrate; and
a second support member supporting the first support member and having a greater linear expansion coefficient than that of the electrical wiring board, wherein
the electrical wiring board is bonded to a first surface of the first support member and a second surface of the second support member,
an adhesive that bonds the electrical wiring board to the second surface has a lower elastic modulus than that of an adhesive that bonds the electrical wiring board to the first surface, and
a difference in linear expansion coefficient between the first support member and the electrical wiring board is less than a difference in linear expansion coefficient between the second support member and the electrical wiring board.