Electroconductive member, process cartridge, and electrophotographic image formation device

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12259674
APP PUB NO 20220244673A1
SERIAL NO

17658696

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Abstract

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Provided is an electrophotographic electroconductive member, including: an electroconductive support; an electroconductive layer; and a surface layer in order, wherein an impedance is 1.0×103Ω to 1.0×108Ω at an outer surface of the electroconductive member, in the surface layer, an electronic electroconductive agent is dispersed, the electroconductive layer has a matrix containing a cross-linked product of a first rubber and domains each containing a cross-linked product of a second rubber and electroconductive particles, and wherein, and wherein among the domains observed in specified observation regions, 80% by number or more of the domains satisfy (1) and (2):

    (1) a proportion of sectional areas of the electroconductive particles with respect to the domain is 20% or more;(2) A/B is 1.00 to 1.10 when A is a perimeter of the domain and B is an envelope perimeter.

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Patent Owner(s)

Patent OwnerAddress
CANON KABUSHIKI KAISHATOKYO 146-8501

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Furukawa, Takumi Shizuoka, JP 49 576
Kikuchi, Yuichi Shizuoka, JP 56 909
Nishioka, Satoru Shizuoka, JP 47 1336
Takashima, Kenji Kanagawa, JP 84 541
Yamada, Masaki Shizuoka, JP 229 3715
Yamauchi, Kazuhiro Shizuoka, JP 129 2138

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