Bando Chemical Industries, Inc.

Yosuke Matsui

Tomokazu Kobata

Toshiaki Kanzaki

Hisashi Izumi

A laminated organic photosensitive material which comprises an electroconductive support, a charge producing layer and a charge transporting layer formed thereon wherein the charge producing layer contains X-type nonmetal phthalocyanine as a charge producing substance and the charge transporting layer contains an arylaldehydehydrazone derivative of the general formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each an alkyl or an aryl group.

Laminated organic photosensitive material

There is disclosed a laminated organic photosensitive material which comprises an electroconductive support, an undercoat, a charge producing layer and a charge transporting layer in sequence wherein the undercoat is composed of an alcohol soluble polyamide resin and wherein the charge producing layer contains X-type nonmetal phthalocyanine as a charge producing substance and a mixture of a vinyl chloride-etyhylene copolymer in an amount of 40-95% by weight and a vinyl chloride-vinyl acetate-maleic acid copolymer in an amount of 5-60% by weight based on the mixture as a binder resin for the layer.

Laminated organic photosensitive material comprising an X-type nonmetal

A laminated organic photosensitive material which comprises an electroconductive support, a charge producing formed thereon, wherein the charge transporting layer layer and a charge transporting layer contains a mixture of a bistyryl compound represented by the formula ##STR1## in an amount of 65-90% by weight based on the mixture as a first charge transporting substances and a further compound in an amount of 35-10% by weight based on the mixture as a second charge transporting substance, and the mixture has a glass transition temperature of not more than 45.degree. C.

A laminated organic photosensitive material which comprises an electroconductive support, a charge producing layer and a charge transporting layer formed thereon wherein the charge producing layer contains X-type nonmetal phthalocyanine as a charge producing substance and a halogen-containing resin as a binder resin for the layer, and the charge transporting layer contains a hydrazone compound of the formula: ##STR1## as a charge transporting substance and a halogen-containing resin as a binder resin for the charge producing layer.

In an electrophotographic light-sensitive material having a layer of a charge transporting substance and a layer of a charge producing substance on an electrically conductive support, the charge transporting substance is an arylaldehydehydrazone derivative of the general formula: ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each an alkyl or aryl group.

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Kobe, Japan

Yosuke Matsui