Mitsubishi Kasei Corporation

Mitsubishi Chemical Industries Limited

Kiyoshi Sekihara

Yukio Yamaguchi

Hiromi Horiuchi

Toshihiko Yoshitomi

Yasuo Kamoshita

Mamoru Nozomi

Ryoko Aso

Heihachi Yushina

In the field of the photosensitive member for electrophotography comprising an electrically conductive substrate and at least one primer layer and a photosensitive layer, there is disclosed an improved member which is characterized in that the primer layer contains a copolyamide which contains as a constituent a diamine represented by a chemical formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 respectively and independently a hydrogen atom or a methyl or ethyl group.

Photosensitive member for electrophotography with copolyamide interlayer

An insulative magnetic toner disclosed herein comprises a magnetic powder, a negative charge control agent, a binder resin and a compound having phenazine ring amorphous-silicon photoreceptor. The magnetic toner according to the invention is effective for preventing the occurrence of picture image blurring under high humidity when used in an amorphous-silicon photoreceptor.

Magnetic toner for electrophotography

An amorphous silicon photoreceptor for electrophotography having a specific surface roughness is disclosed herein. Also provided are a process for the preparation and/or regeneration of the material and improved methods for electrophotography, which use a special abrasive. The material enables the electrophotography without occurance of any image blurring under high humidity conditions.

Amorphous silicon hydride photoreceptors for electrophotography, process

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Tsukui, Japan

Kiyoshi Sekihara