Method for the preparation of photoconductive compositions

Claim 1

A process for the preparation of an electrophotographic imaging member comprising providing a photoconductive layer, depositing on said photoconductive layer a coating comprising a solution of a polycarbonate resin material having a molecular weight of from about 20,000 to about 120,000, from about 25 to about 75 percent by weight of a diamine compound based on the total weight of said polycarbonate resin, said diamine compound of one or more compounds having the general formula: ##STR3## wherein X is selected from the group consisting of an alkyl group, having from 1 to about 4 carbon atoms and chlorine, a halogenated hydrocarbon solvent and a halogen free organic solvent having a boiling point greater than the boiling point of said halogenated hydrocarbon solvent, the weight ratio of said halogen free organic solvent to said halogenated hydrocarbon solvent being between about 1:99 and about 50:50, heating said coating to remove at least substantially all of said halogenated hydrocarbon solvent, said photoconductive layer exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive layer generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive layer and transporting said holes through said charge transport layer.