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. 09, 2025
Filed:
Jul. 27, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Hiroaki Kusano, Tokyo, JP;
Junichiro Iri, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid ejection head includes: a channel member; an ejection substrate being disposed in a recess of the channel member and having a nozzle row of nozzles arranged in a first direction; and a sealing member having a thermosetting resin filled in a predetermined space defined by side and bottom surfaces of the recess and a side surface of the ejection substrate and located upstream of the ejection substrate in a second direction. The sealing member includes: a first sealing portion having a first resin located near the bottom surface of the predetermined space; and a second sealing portion having a second resin located near an ejection surface of the ejection substrate. A coefficient of linear expansion of the first resin is less than that of the second resin, and a specific gravity of the first resin is greater than that of the second resin.