Electrophotographic recording material

Claim 1

Electrophotographic recording material comprising an electrically conducting supporting material having thereon a photoconductive double layer of organic materials, said double layer being composed of a tightly packed and uniform, homogeneous, opaque, charge carrier-producing dyestuff layer and a transparent top layer of insulating material containing at least one charge-transporting compound, the transparent top layer comprising a binder and a charge-transporting aromatic compound with an extended πelectron system which is substituted by at least one substituted amino group, and the dyestuff layer comprising a condensation product of an aromatic aldehyde and a compound carrying an active methylene group, selected from the group consisting of a compound having a terephthylidene group of the general formula ##SPC3## wherein A and B, which are identical or different, represent a carbocyclic or N-heterocyclic five membered ring which may be condensed with a benzene radical and is substituted by one or more oxo-groups and also may be substituted by methyl or a nitro-substituted phenyl radical and a cyclopentanone or cyclopentadione compound substituted by one or two pyrenylidene-(3)-groups of the following formula ##SPC4## which additionally may be condensed with a benzene radical.