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. 23, 2026
Filed:
Apr. 19, 2024
Canon Kabushiki Kaisha, Tokyo, JP;
Koichi Ishida, Tokyo, JP;
Shuzo Iwanaga, Kanagawa, JP;
Hiroaki Mihara, Tokyo, JP;
Satoshi Kimura, Kanagawa, JP;
Tomohiro Sato, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid ejection head includes a print element substrate having an ejection port forming member including an ejection surface on which a plurality of ejection port arrays for ejecting liquid are formed and a protection member having an opening corresponding to one of the ejection port arrays, the protection member is provided with at least one recessed portion at an end parallel to a direction of the plurality of ejection port arrays in a direction orthogonal to the plurality of ejection port arrays and a projection portion projecting in the direction orthogonal to the plurality of ejection port arrays, the projection portion is provided inside the at least one recessed portion, and the ejection port forming member has a corresponding recessed portion corresponding to the projection portion in the direction orthogonal to the plurality of ejection port arrays.