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. 10, 2020
Filed:
Oct. 02, 2018
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Noboru Miyagawa, Suntou-gun, JP;
Hidekazu Matsuda, Susono, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/02 (2006.01); G03G 21/18 (2006.01); C08K 5/053 (2006.01); C08K 5/132 (2006.01);
U.S. Cl.
CPC ...
G03G 15/02 (2013.01); G03G 15/0233 (2013.01); G03G 21/18 (2013.01); C08K 5/053 (2013.01); C08K 5/132 (2013.01); Y10T 428/2947 (2015.01);
Abstract
In order to maintain the image quality of a recent high-speed electrophotographic apparatus, a charging member is provided which hardly causes charging unevenness of a photosensitive member even when vibration of the photosensitive member occurs. The charging member includes an electro-conductive support, an electro-conductive elastic layer, and a surface layer. The elastic layer contains a resin having an epichlorohydrin chain in the molecular structure and a specific flavonoid compound having two or more hydroxyl groups in the molecular structure.