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:
Feb. 26, 2013
Filed:
Feb. 13, 2012
Hiroshi Mayuzumi, Yokohama, JP;
Tomohito Taniguchi, Suntou-gun, JP;
Hidekazu Matsuda, Susono, JP;
Nozomu Takahata, Suntou-gun, JP;
Yusuke Yagisawa, Mishima, JP;
Satoshi Koide, Susono, JP;
Masataka Kodama, Mishima, JP;
Hiroshi Mayuzumi, Yokohama, JP;
Tomohito Taniguchi, Suntou-gun, JP;
Hidekazu Matsuda, Susono, JP;
Nozomu Takahata, Suntou-gun, JP;
Yusuke Yagisawa, Mishima, JP;
Satoshi Koide, Susono, JP;
Masataka Kodama, Mishima, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is the following charging member of an electrophotographic apparatus. The charging member suppresses the occurrence of each of a streak-like image, a spot-like image, and a rough image that occur when image formation is performed over a long time period. Also provided are a process cartridge and an electrophotographic apparatus each having the charging member. A compound having a siloxane dendrimer structure at a vinyl group or a side chain of a vinyl polymer is incorporated into the surface layer of the charging member comprising a conductive substrate and the surface layer.