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. 20, 2015
Filed:
Aug. 29, 2012
Minoru Nakamura, Mishima, JP;
Kazuaki Nagaoka, Susono, JP;
Yosuke Ata, Suntou-gun, JP;
Masahiro Inami, Tagata-gun, JP;
Minoru Nakamura, Mishima, JP;
Kazuaki Nagaoka, Susono, JP;
Yosuke Ata, Suntou-gun, JP;
Masahiro Inami, Tagata-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides a conductive member in which it is possible to control a variation in resistance due to physical stress from a contact member, and an uneven density in a halftone image can be prevented. The conductive member is a development roller which includes a conductive shaft core, a conductive elastic layer, and a conductive surface layer. The conductive elastic layer contains silicone rubber and a basic carbon black dispersed in the silicone rubber. The surface layer contains a urethane resin having a carboxyl group in its molecule and an acidic carbon black dispersed in the urethane resin.