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:
Sep. 10, 2013
Filed:
Aug. 25, 2011
Tomohito Taniguchi, Suntou-gun, JP;
Satoshi Koide, Susono, JP;
Tomohito Taniguchi, Suntou-gun, JP;
Satoshi Koide, Susono, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A charging member includes a conductive substrate and a conductive resin layer. The conductive resin layer includes a binder, conductive fine particles, and bowl-shaped resin particles each of which has an opening. The bowl-shaped resin particles are contained in the conductive resin layer in such a way as not to be exposed to an outer surface of the charging member, and the surface of the charging member has concavities derived from openings of the bowl-shaped resin particles and protrusions derived from edges of the openings of the bowl-shaped resin particles. The bowl-shaped resin particles each has a roundish concavity and includes inner walls lined with the conductive resin layer.