Electrophotographic recording material

Claim 1

An electrophotographic recording material comprising an electroconductive support material with a photoconductive double layer of organic materials composed of a tightly packed, homogeneous, uniform, opaque, charge carrier producing dyestuff layer prepared by vacuum evaporation of the dyestuff and a transparent top layer of insulating materials with at least one charge transporting compound, in which the organic dyestuff layer is composed of the general formula ##STR2## in which R is a hydroxyl or amino group, R 1 is phenyl, naphthyl or quinolyl which are optionally substituted by hydroxy, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, nitro groups, halogen or by carbamoyl or sulfonamido groups which are optionally substituted at the nitrogen by C 1 -C 4 alkyl, C 1 -C 4 alkenyl, phenyl or cyclohexyl groups, R 2 is hydrogen, amino or carbamoyl, which may be N-substituted by phenyl, naphthyl or benzimidazolonyl and in which the transparent top layer is composed of a mixture of a charge transporting monomeric heterocyclic compound with at least one substituted amino group and having an extended π-electron system, which is selected from the group of oxazoles, oxdiazoles, triazoles, imidazoles and pyrazoles, and a binder in a ratio by weight of about 1:1, which recording material is useful in an electrophotographic copying process with negative charging of the top layer.