Patent ID: 7390601

Claim:
A photoconductive imaging member comprising: a substrate; an optional hole blocking layer; a charge generating layer comprising a photogenerating pigment and a binder; and a charge transport layer, wherein said binder comprises an ETM-modified binder material comprising an electron transport material chemically attached to a polymeric binder material; wherein the electron transport material is selected from the group consisting of carboxy fluorenone malonitrile and derivatives thereof, a nitrated fluorenone, N,N′-disubstituted-1,4,5,8-naphthalene tetracarboxylic diimides, N,N′-disubstituted-1,7,8,13-perylene tetracarboxylic diimides, carboxybenzyl naphthaquinones, and combinations thereof; and wherein the polymeric binder material is selected from the group consisting of poly(vinyl chloride-co-vinyl acetate-co-2-hydroxypropyl acrylate-co-maleic acid); a terpolymer of polyvinyl chloride, polyvinyl acetate, and polyhydroxypropyl acrylate; a terpolymer of polyvinyl butyral, polyvinyl alcohol, and polyvinyl acetate; polyvinyl alcohol and its copolymers with cyanoethyl polyvinyl alcohol, and combinations thereof.