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. 25, 2017
Filed:
Jun. 02, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Hidekazu Matsuda, Susono, JP;
Noboru Miyagawa, Suntou-gun, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A charging member is provided, suppressing the occurrence of streak-like images resulting from resistance increase caused by degradation of the charging member due to electric conduction for a long period. A process cartridge and an electrophotographic apparatus are also provided, suppressing the occurrence of streak-like images and stably forming a high-quality electrophotographic image. The charging member comprises an electroconductive support and an electroconductive surface layer, the surface layer comprising at least one of the compounds respectively represented by formula (1), formula (3), and formula (4) defined in the specification, a binder resin, and a conducting agent. The process cartridge and the electrophotographic apparatus use the charging member.