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:
Nov. 22, 2022
Filed:
Jan. 06, 2021
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Keiji Matsumoto, Kanagawa, JP;
Shinji Kishikawa, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/14 (2006.01); B41J 2/165 (2006.01); B41J 2/145 (2006.01);
U.S. Cl.
CPC ...
B41J 2/1433 (2013.01); B41J 2/145 (2013.01); B41J 2/16505 (2013.01);
Abstract
A liquid ejection head includes a liquid ejection face on which multiple ejection port arrays, each of which is formed with multiple ejection ports that eject liquid, are arranged. In the liquid ejection head, a first protrusion and a second protrusion, which have different sizes, are arranged in peripheral areas of the ejection port arrays on the liquid ejection face.