Process cartridge and electrophotographic apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11340553
APP PUB NO 20210116858A1
SERIAL NO

17070179

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Abstract

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The process cartridge includes an electrophotographic photosensitive member having a first support and a photosensitive layer; and a charging member. In the photosensitive member when an electric current is measured which flows when a voltage is applied to a surface while being varied, a gradient a1 of a low electric field region and a gradient a2 of a high electric field region satisfy a2/a1≥1.50, in a graph. The charging member includes a second support having an electroconductive outer surface, and a second electroconductive layer including a matrix and a plurality of domains being dispersed in the matrix, at least a portion of the domain is exposed to an outer surface which includes at least the matrix and at least a portion of the domain, and a volume resistivity ρM of the matrix is 1.00×105 times or higher of a volume resistivity ρD of the domain.

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Patent Owner(s)

Patent OwnerAddress
CANON KABUSHIKI KAISHATOKYO JAPAN DAEJEON 3 MEATBALLS 30 2

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Araki, Hirotaka Yokohama, JP 1 11
Hiyama, Fumiyuki Shizuoka, JP 9 32
Kikuchi, Yuichi Shizuoka, JP 56 909
Makisumi, Kohei Shizuoka, JP 22 120
Miyazawa, Seiichi Zama, JP 17 292
Watariguchi, Kaname Kanagawa, JP 54 485
Yamauchi, Kazuhiro Shizuoka, JP 129 2138

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