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:
Jan. 20, 2026
Filed:
Mar. 27, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Akiko Hammura, Tokyo, JP;
Yoshiyuki Nakagawa, Kanagawa, JP;
Takuro Yamazaki, Tokyo, JP;
Atsushi Teranishi, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid ejection head includes: an array of ejection ports; pressure chambers corresponding respectively to and communicating with the ejection ports; individual supply channels and individual collection channels communicating with the chambers; a common supply channel communicating with surfaces of the individual supply channels opposite to surfaces thereof communicating with the chambers; a common collection channel communicating with surfaces of the individual collection channels opposite to surfaces thereof communicating with the chambers; and a damper member forming a wall of a part of a channel in the common collection channel. A wall of a part of a channel in the common supply channel is not formed by the damper member. The common supply channel and the common collection channel are formed so as to extend in a first direction along the ejection port array, and are disposed side by side in a second direction crossing the ejection port array.