IMAGING MEMBER INCLUDING A N,N'SUBSTITUTED ¬1,1'-BIPHENYL-4,4'-DIAMINE CHARGE TRANSPORT MATERIAL AND A BIS-OR TRIS- (DISUBSTITUTED AMINO PHENYL) METHANE STABILIZING COMPOUND

摘要

Abstract of the DisclosureAn imaging member comprising a hole generation layer and acontiguous hole transport layer, said hole transport layer comprising atransparent electrically inactive polycarbonate resinous material having aresidual amount of a halogen containing organic solvent therein and dispersedtherein from about 25 to about 75 percent by weight based on said transportlayer composition of a diamine, said charge transport layer being substantial-ly nonabsorbing in the spectral region at which the hole generation layergenerates and injects photogenerated holes, but being capable of supportingthe injection of photogenerated holes from said photoconductive material andtransporting said hole through said charge transport layer, said chargetransport layer also containing a stabilizing proportion of a di or triarylmethane compound of the general formula:wherein R1 and R2 are independently selected from the groupconsisting of a C1-C8 alkyl, aryl, alkaryl and aralkyl, where said aryl is aphenyl group or a condensed ring group, where the alkyl group of said alkaryl-2-and aralkyl is a C1-C4 group, R3 is independently selected from the groupconsisting of hydrogen and CH3; and R4 is the same as R1 and R2 or a di-substituted aminophenyl group wherein the substituents are independentlyselected from the group consisting of a C1-C8 alkyl, aryl, alkaryl and aralkylas defined supra.