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. 20, 2018
Filed:
Nov. 17, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Satoru Nishioka, Suntou-gun, JP;
Kazuhiro Yamauchi, Suntou-gun, JP;
Kenichi Yamauchi, Mishima, JP;
Hiroki Masu, Tokyo, JP;
Noriko Suzumura, Mishima, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is an electroconductive member for electrophotography having a stable charging ability. The electroconductive member includes, in this order, an electroconductive substrate, an electroconductive elastic layer, and a surface layer. The surface layer contains a polymer having a urethane linkage. The polymer has, in the molecule, structures included in at least two groups selected from: Group A of structures each represented by a specific structural formula (1); Group B of at least one of structures each represented by a specific structural formula (2) or structures each represented by a structural formula (3); and Group C of structures each represented by a specific structural formula (4). The surface layer has a volume resistivity of 1.0×10Ω·cm or more and 1.0×10Ω·cm or less, and the surface layer has a universal hardness at a depth 1 μm from the surface thereof of 1.0 N/mmor more and 7.0 N/mmor less.