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:
May. 31, 2022
Filed:
Mar. 20, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Masahiro Kurachi, Susono, JP;
Kazuhiro Yamauchi, Suntou-gun, JP;
Satoru Nishioka, Suntou-gun, JP;
Kenji Takashima, Yokohama, JP;
Yuichi Kikuchi, Suntou-gun, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
The electro-conductive member has an electro-conductive support, and an electro-conductive layer in this order, the electro-conductive layer including a matrix and domains, the matrix constituted by a first rubber composition containing a cross-linked product of a first rubber, the domains having electro-conductivity, and dispersed in the matrix, each of the domains constituted by a second rubber composition containing a cross-linked product of a second rubber and an electro-conductive particle, the first rubber and the second rubber being diene-based rubbers, the first rubber having at least one monomer unit, the second rubber having at least one monomer unit different from the monomer unit which the first rubber has; a difference of absolute values of SP values between the first rubber and the second rubber is 0.2 (J/cm)to 4.0 (J/cm); and a tan δ1/tan δ2 is 0.45 to 2.00.