Patent ID: 8475983

Claim:
An 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; and an overcoat layer disposed on the charge transport layer, wherein the overcoat layer comprises a film forming and optically clear A-B diblock copolymer capable of providing protection against amine species contaminants, wherein the diblock copolymer has a formula selected from the group consisting of wherein z representing the number of bisphenol A repeating units in block A is from about 9 to about 18, y representing the number of repeating phthalic acid in block B is from about 1 to about 2, and n representing the degree of polymerization of diblock copolymer is from about 20 to about 80; and wherein z representing the number of bisphenol A repeating units in block (A) is from about 9 to about 18, y representing the number of repeating phthalic acid in block (B) is from about 1 to about 2, and n representing the degree of polymerization of diblock copolymer is from about 20 to about 80; and mixtures thereof.