Patent ID: 8470505

Claim:
An imaging member comprising: a flexible substrate; a charge generating layer disposed on the substrate; and at least one charge transport layer disposed on the charge generating layer, wherein the charge transport layer comprises a charge transport component molecularly dispersed in a polycarbonate binder, the polycarbonate binder being an A-B diblock copolymer comprising two segmental blocks of a bisphenol A polycarbonate (C 16 H 14 O 3 ) and a phthalic acid capable of providing protection against amine species contaminants; wherein the diblock copolymer binder in the at least one charge transport layer 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 mixtures thereof.