Toray Industries, Inc.

Keisuke Ohshima

Koichi Abe

Iwao Okazaki

Kazuo Matsuura

Tohru Miyake

Kenji Hayashi

Shoji Kobayashi

Hiroki Osedo

Disclosed is a biaxially oriented, laminated polyester film having a lamination structure with at least two layers. At least one of the outermost layers of the film is a thin laminated layer A having a thickness of not more than 3 .mu.m. In the layer A, internally formed particles and specified agglomerated particles or mono-dispersed particles are present, or the mono-dispersed particles are present at a very small content. When the polyester film is used as a base film for magnetic recording media, the abrasion resistance of the film surface at a high speed can be greatly increased.

Biaxially oriented, laminated polyester film

An electrophotographic photosensitive material has a photosensitive layer formed on an electroconductive substrate, with the photosensitive layer containing a polymeric binder and an organic photoconductor represented by the following formula

Hydrazone or semicarbazone electrophotographic photosensitive material

An electrophotographic photosensitive material is provided, which has a photosensitive layer formed on an electroconductive substrate and containing a polymeric binder and an organic photoconductor. The organic photoconductor is expressed by the formula: ##STR1##

Electrophotographic photosensitive material comprises pyrazoline and

A laminated film which comprises (A) an organic polymer film, (B) a thin metal layer having a thickness of 30 to 500 A laminated on at least one surface of said organic polymer film, and (C) a transparent thin layer containing metal compounds and having a thickness of 0.02 to 0.3.mu. laminated on said thin metal layer (B). At least 60 wt. % of said transparent thin layer (C) comprises zirconium (Zr), silicon (Si) and oxygen, at least 60 molar % of metal elements in the above transparent thin layer (C) comprises zirconium (Zr) and silicon (Si) and molar ratio Zr/Si is in the range of 80/20 to 20/80.

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Ohtsu, Japan

Keisuke Ohshima