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:
Oct. 04, 2011
Filed:
Mar. 25, 2009
Masahiko Miyamoto, Kanagawa, JP;
Nobuyuki Ichizawa, Kanagawa, JP;
Yousuke Tsutsumi, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
This invention provides a circular body, which is used for an image forming apparatus employing an electrophotographic system, the circular body containing: at least an inner layer containing resin and an outer layer that is laminated on an outer circumferential surface side of the inner layer and contains resin; and, as a conductive agent, polyaniline in the outer layer and carbon black in the inner layer; and satisfying the following relational expressions (1) and (2):13.0≦C1≦15.0  (1)21.5≦C2≦25.0  (2),wherein Crepresents the content (parts by weight) of the polyaniline with respect to 100 parts by weight of the resin forming the outer layer, and Crepresents the content (parts by weight) of the carbon black with respect to 100 parts by weight of the resin forming the inner layer, as well as a circular body unit using the circular body and an image forming apparatus using the circular body.