The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2022
Filed:
Jan. 15, 2021
Canon Kabushiki Kaisha, Tokyo, JP;
Isamu Horiuchi, Kanagawa, JP;
Kazunari Ishizuka, Shizuoka, JP;
Satoshi Tsutsui, Kanagawa, JP;
Yohei Hamade, Tokyo, JP;
Miho Ishii, Kanagawa, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A liquid discharge head comprising a substrate comprising a liquid feeding port and an energy generating element for liquid discharge, and a flow channel member comprising, on the substrate, a discharge port through which a liquid is discharged and a liquid flow channel communicating with both the liquid feeding port and the discharge port, wherein the flow channel member comprises a flow channel member () not comprising a surface in contact with the liquid and a flow channel member () comprising a surface in contact with the liquid, a film stress Sand Sof the flow channel members () and (), respectively, satisfy S<S, a film thickness Land Lof the flow channel member () and (), respectively, in a direction perpendicular to the substrate, satisfy L<L, and satisfying 470 MPa·μm<[L×S+(L−L)×S]<1200 MPa·μm.