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:
Apr. 05, 2016
Filed:
Aug. 27, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Noboru Miyagawa, Suntou-gun, JP;
Tomohito Taniguchi, Suntou-gun, JP;
Masahiro Watanabe, Mishima, JP;
Taichi Sato, Numazu, JP;
Takehiko Aoyama, Suntou-gun, JP;
Atsushi Uematsu, Fuji, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A charging member includes an electro-conductive substrate and an electro-conductive resin layer. The electro-conductive resin layer contains a binder, a plurality of bowl-shaped resin particles, and a plurality of hollow particles. The charging member has a surface having recesses due to openings of the bowl-shaped resin particles and protrusions due to edges of the openings of the bowl-shaped resin particles, where the positional relationship between one bowl-shaped resin particle and the hollow particles lying in the vicinity of the bowl-shaped resin particle is that the number of the hollow particles being in the space under the bowl-shaped resin particle in a predetermined depth is at least four in average.