Hitachi, Ltd.

Hitachi Chemical Company, Ltd.

Yasuo Shimamura

Kunihiro Tamahashi

Shigeharu Onuma

Yutaka Ito

Masatoshi Wakagi

Takayuki Nakakawaji

Masanobu Hanazono

Shigeki Komatsuzaki

Mitsuyoshi Shoji

Toshiyuki Ohno

Mitsuo Chigasaki

Fuminori Ishikawa

Chiaki Yamagishi

Makoto Fujikura

An electrophotographic member comprising a support, a photoconductive layer formed thereon, and a surface layer formed thereon, said surface layer including or attaching a lubricating agent having a perfluoropolyoxyalkyl or perfluoropolyoxyalkylene group to form an organic surface protective lubricating layer, and a fixing group to be fixed to the surface layer, is excellent in moisture resistance, wear resistance and cleaning properties and thus useful in an electrophotographic apparatus with a long life and high reliability.

Electrophotographic member containing a fluorine-containing lubricating

The photoconductive layer (3) has a triple-layer structure comprised of an upper layer (33) made of amorphous silicon containing germanium and carbon, a middle layer (32) made of amorphous silicon containing germanium, and a lower layer (31) made of amorphous silicon. The upper layer (33) formed between a surface layer (4) and the middle layer (32), and the lower layer (31) formed between the middle layer (32) and a barrier layer (2) serve to reduce the energy difference and the interfacial state between respective layers thus, high electrophotographic sensitivity for a longer wavelength light can be obtained, and sensitivity in the oscillation wavelength of a GaAlAs diode laser improves effectively.

Multilayered electrophotographic photosensitive member

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Hitachi, Japan

Yasuo Shimamura