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:
Nov. 16, 2021
Filed:
Oct. 16, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Satoru Nishioka, Suntou-gun, JP;
Masahiro Kurachi, Susono, JP;
Kenji Takashima, Yokohama, JP;
Yuichi Kikuchi, Suntou-gun, JP;
Kazuhiro Yamauchi, Suntou-gun, JP;
Kana Sato, Numazu, JP;
Takumi Furukawa, Susono, JP;
Hiroaki Watanabe, Odawara, JP;
Kenya Terada, Suntou-gun, JP;
Yuya Tomomizu, Ichikawa, JP;
Toshimitsu Nakazawa, Toride, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An electroconductive member for electrophotography has an electroconductive support and an electroconductive layer in the order mentioned. The electroconductive layer has a matrix including a crosslinked product of a first rubber, and a domain including a crosslinked product of a second rubber and an electroconductive particle. The impedance of an outer surface of the electroconductive member is 1.0×10to 1.0×10Ω. 80% by number or more of domains observed at each of a total of nine 15-μm square observation regions, which are disposed at any three points in a thickness region from the outer surface to a specific depth on each of cross sections in a thickness direction at three points: the center of the electroconductive layer in the longitudinal direction and points at a specific distance from both edges of the electroconductive layer toward the center, satisfy specific requirements.