Patent ID: 7943278
Filing Date: 2011-05-17
Classification: G03G

Abstract:
1. An electrophotographic imaging member comprising: a substrate; a charge generating layer disposed on the substrate; at least one charge transport layer disposed on the charge generating layer; an overcoat layer disposed on the charge transport layer, wherein the overcoat layer comprises a polyhedral oligomeric silsequioxane and a blend of a low surface energy modified polycarbonate polymer and a second low surface energy polymer, the low surface energy modified polycarbonate polymer having a molecular weight of from about 20,000 to about 200,000 is being formed and selected from the group consisting of modified Bisphenol A polycarbonate of poly(4,4′-isopropylidene diphenyl carbonate) having a small fraction of polydimethyl siloxane in the polymer back bone and having the following formula (I): wherein x is an integer between about 40 and about 50 while y and z are integers representing a number of the respective repeating units, and the second low surface energy polymer having a molecular weight of from about 20,000 to about 200,000 and having formula (IX): wherein the polymer has an polyalkyl and polyaryl siloxane main chain, and wherein a, b and p are integers representing the number of repeating units; and an anticurl back coating positioned on a second side of the substrate opposite to the charge generating and the charge transport layers.