Mita Industrial Co., Ltd.

Hiroichi Morikawa

Tatsuo Aizawa

Akira Fushida

Hideo Fukuda

Yasutoki Kamezawa

Toshihiro Shinsho

Takaaki Miyazaki

A photosensitive paper for electrophotography comprising a paper substrate, an electrophotographic photosensitive layer formed on one surface of the substrate and an electrically conductive coating layer formed on the other surface of the substrate, which electrically conductive coating layer comprises an electrically conductive binder medium and a fine powder of a fluorine resin distributed predominantly in the surface portion of the electrically conductive coating layer, is disclosed. This photosensitive paper is satisfactory in all of the following properties; adaptability to the paper feeding operation, the scratch resistance of the photosensitive layer, the blocking resistance and electric characteristics irrespective of the humidity conditions in the operation atmosphere.

Photosensitive paper for electrophotography with an electrically

A process for preparing a photosensitive material for electrostatic photography having an improved memory resistance, which comprises a photoconductive layer on an electrically conductive substrate, the photoconductive layer comprising (1) a finely divided inorganic photoconductor, (2) 5 to 50 parts by weight, per 100 parts by weight of the photoconductor of an electrically insulating organic synthetic resin binder having a specific resistance of at least 10.sup.14 ohm-cm, and (3) 0.001 to 1 % by weight, based on the photoconductor, of at least one photo-memory erasing compound selected from alkali metal dichromates, which process comprises forming the photoconductive layer by applying a coating composition to the electrically conductive substrate at a coating weight of 5 to 50 g/m.sup.2, the coating composition comprising the photo-memory erasing compound, the photoconductor, the resin binder, an aromatic solvent in which the resin binder is dissolved or dispersed, an a polar solvent for the photo-memory erasing compound, the polar solvent being soluble in the aromatic solvent and being selected such that the photo-memory erasing compound is soluble in said polar solvent.

Alkali metal dichromate as memory resistance improver for zinc oxide

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Osaka, Japan

Hiroichi Morikawa