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:
Jun. 30, 2026
Filed:
Aug. 04, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Hiroki Tajima, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid ejection head includes an ejection port configured to eject liquid, a liquid reservoir portion configured to supply the liquid to the ejection port, and a pressure adjustment chamber configured to communicate with the liquid reservoir portion. The pressure adjustment chamber includes an elastic deformation portion configured so that an inner volume thereof can be changed according to a gas pressure and a support portion configured to support the elastic deformation portion on the liquid reservoir portion. An area between the elastic deformation portion and the support portion has higher rigidity than the elastic deformation portion.