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. 01, 2022
Filed:
Apr. 09, 2021
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Hirotaka Fukushima, Tochigi, JP;
Junzo Kobayashi, Tochigi, JP;
Toshinori Nakayama, Chiba, JP;
Shigeru Tanaka, Tokyo, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/20 (2006.01); G03G 13/20 (2006.01);
U.S. Cl.
CPC ...
G03G 15/2057 (2013.01); G03G 15/2064 (2013.01); G03G 2215/2032 (2013.01);
Abstract
The fixing device having a long durability life includes a first member, a heater, and a second member, the heater including a base material, an intermediate layer on the base material, and a surface layer on the intermediate layer, which includes a diamond-like carbon film, the base material containing at least one compound selected from the group consisting of aluminum nitride, aluminum oxide, and silicon nitride, and the intermediate layer has a ratio of [(Si)+(C)]/A of 0.8 or more, and a ratio of (Si)/(C) of more than 1.