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:
Mar. 02, 2021
Filed:
Dec. 03, 2019
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Souta Takeuchi, Fujisawa, JP;
Takeru Yasuda, Kawasaki, JP;
Kazuaki Shibata, Kawasaki, JP;
Taichi Yonemoto, Isehara, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/14 (2006.01); B41J 2/16 (2006.01);
U.S. Cl.
CPC ...
B41J 2/14072 (2013.01); B41J 2/14088 (2013.01); B41J 2/14129 (2013.01); B41J 2/162 (2013.01); B41J 2/164 (2013.01); B41J 2/1606 (2013.01); B41J 2/1623 (2013.01); B41J 2/1626 (2013.01); B41J 2/1631 (2013.01); B41J 2/1643 (2013.01); B41J 2202/22 (2013.01); Y10T 29/49401 (2015.01);
Abstract
Provided is a liquid ejection head substrate including: a substrate; a liquid ejection element that generates liquid ejection energy on the substrate; and an electrode pad that is electrically connected to the liquid ejection element, in which the electrode pad includes a barrier metal layer and a bonding layer on the barrier metal layer, and an end side surface of the barrier metal layer is covered with a silicon-based film containing carbon.