Patent ID: 6183921
Filing Date: 2001-02-06
Classification: G03G

Abstract:
An electrophotographic imaging member comprising a supporting substrate; a charge generating layer; and a charge transport layer,said supporting substrate being (1) electrically non-conductive and adjacent an electrically conductive ground plane, wherein said ground plane is between the supporting substrate and the charge generating layer, or (2) electrically conductive,said charge generating layer comprising a polymer binder and a benzimidazole perylene charge generating material, andsaid charge transport layer consisting of an active charge transport polymer and 0.2 to 50 percent by weight of a plasticizer based on the total weight of the charge transport layer, wherein the active charge transport polymer is a polymeric tetraryl-substituted biphenyldiamine, said polymeric tetraaryl-substituted biphenyldiamine being a polymer of: ##STR9##and wherein the plasticizer is an ester of the structure: ##STR10##wherein each of R.sub.1 and R.sub.2 is a linear or branched alkyl group represented respectively by C.sub.m H.sub.2m+1 and C.sub.n H.sub.2n+1 wherein m and n are integers of from 1 to 15 or each of R.sub.1 and R.sub.2 is a cyclic group represented respectively by C.sub.x H.sub.2x-1 and C.sub.y H.sub.2y-1, wherein x and y are integers between 3 and 8.