Patent ID: 7879518

Claim:
A photoreceptor comprising: a substrate; a charge generating layer; a charge transport layer comprising a N,N,N′N′-tetra(4-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine charge transport molecule and an antioxidant selected to match the oxidation potential of the charge transport molecule and selected from the group consisting of sterically hindered bis-phenols with a common structure of A-1 wherein R1 and R2 are each a hydrogen atom, a halogen atom, or a hydrocarbyl group having from 1 to about 10 carbon atoms, and sterically hindered dihydroquinones with a common structure of A-3 wherein R1, R2, R3, and R4 are each a hydrocarbyl group having from 1 to about 10 carbon atoms.