Mitsubishi Paper Mills Limited

Tatsuya Kodera

Kazuhiro Emoto

Akira Itoh

Kozo Haino

Makoto Okaji

Kazuchiyo Takaoka

Koichi Torizuka

Tomoko Taniguchi

Organic photoconductive material and electrophotographic photoreceptor using the material

Disclosed is an electrophotographic photoreceptor having a high sensitivity, a high endurance and a high stability against repeated use which comprises a conductive support with a light-sensitive layer containing one or more hydrazone compounds represented by the following formula (I): ##STR1## wherein R.sub.1 represents an alkyl group of 5 or more carbon atoms, R.sub.2 represents a substituted or unsubstituted alkyl group, alkenyl group, aralkyl group, aryl group or heterocyclic group, and R.sub.3 and R.sub.4 each represent a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom.

Electrophotographic photoreceptor containing hydrazone

Disclosed is an electrophotographic photoreceptor which is high in sensitivity and endurance and which comprises an electroconductive support and, provided thereon, a photosensitive layer which contains a hydrozone compound represented by the following formula [I], [II], or [III]: ##STR1## wherein the various subgroups designated by R or A are as described in the specification.

Novel hydrazone compound in an electrophotographic receptor

Disclosed is an electrophotographic photoreceptor which is high is sensitivity and high in endurance and which contains in photosensitive layer a novel stilbene compound represented by the following formulas [I], [II], or [III]: ##STR1##

Electrophotographic photoreceptor with stilbene compound

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Tokyo, Japan

Tatsuya Kodera