Fuji Xerox Co., Ltd.

Tetsuya Ezumi

Hirofumi Nakamura

Hidemi Nukada

Masahiro Iwasaki

Takashi Yamada

Masahiko Miyamoto

Taketoshi Hoshizaki

Kazuyuki Nakamura

Daisuke Haruyama

Masayuki Nishikawa

Ichiro Takegawa

Shinya Yamamoto

Koji Bando

Masaru Miura

Yukiko Kamijo

Isamu Ishiko

Michiko Aida

An electrophotographic photoreceptor includes a conductive substrate, and at least a photosensitive layer on the conductive substrate, a layer located at a surface of the photosensitive layer side of the electrophotographic photoreceptor contains fluorine containing resin particles and a fluoro graft polymer having a fluoroalkyl group having 1 to 7 carbon atoms, and an area for a polystyrene equivalent molecular weight of 700,000 or more is from about 5% to about 20% of the total area in a gel permeation chromatography (GPC) chart for the fluoro graft polymer.

Electrophotographic photoreceptor, process cartridge, and image forming apparatus

An electrophotographic photoreceptor includes a conductive support; a photosensitive layer; and a surface protective layer as an outermost layer of the electrophotographic photoreceptor, wherein the electrophotographic photoreceptor satisfies following formulas (a) and (b):3.6&#x2266;()/&#xd7;100&#x2266;6&#x2003;&#x2003;(a)B&#x2266;0.3&#x2003;&#x2003;(b) wherein A (&#x3bc;m) represents a ten-point-averaged surface roughness Rof the conductive support, B (&#x3bc;m) represents a ten-point-averaged surface roughness Rof the surface protective layer, and C (%) represents a reflectivity of the surface protective layer against the conductive support.

Electrophotographic photoreceptor, process cartridge and image forming apparatus

An electrophotographic photoreceptor having, between an electroconductive substrate and a photosensitive layer, an interlayer which contains fine metal oxide particles and a binder resin and which, when an electric field of 10 V/m is applied thereto at 28&deg; C. and 85% RH, has a volume resistivity of from 10 to 10 &OHgr;&middot;cm and, when an electric field of 10 V/m is applied thereto at 15&deg; C. and 15% RH, has a volume resistivity which is up to 500 times the volume resistivity thereof as measured when an electric field of 10 V/m is applied thereto at 28&deg; C. and 85% RH.

Electrophotographic photoreceptor, processes for producing the same, process cartridge, and electrophotographic apparatus

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Kanagawa, Japan

Tetsuya Ezumi