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, 2016
Filed:
Mar. 18, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Taichi Sato, Numazu, JP;
Tomohito Taniguchi, Suntou-gun, JP;
Noboru Miyagawa, Suntou-gun, JP;
Takehiko Aoyama, Suntou-gun, JP;
Atsushi Uematsu, Fuji, JP;
Masahiro Watanabe, Mishima, JP;
Yuki Yamamoto, Tokyo, JP;
Harunobu Ogaki, Suntou-gun, JP;
Akihiro Maruyama, Mishima, JP;
Takashi Anezaki, Hiratsuka, JP;
Daisuke Miura, Tokyo, JP;
Hirofumi Kumoi, Suntou-gun, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided an electrophotographic image forming apparatus comprising an electrophotographic photosensitive member and a charging member. The electrophotographic photosensitive member includes a charge transport layer as a surface layer having a matrix-domain structure including specific resins. The charging member comprises an electro-conductive substrate, and an electro-conductive elastic layer. The electro-conductive elastic layer comprises a binder, and holding a bowl-shaped resin particle having an opening, so that at least a part of the bowl-shaped resin particle is exposed, and the charging member has a concavity derived from the opening of the bowl-shaped resin particle on the surface thereof, and a protrusion derived from an edge of the opening of the bowl-shaped resin particle on the surface thereof.