Imaging system using novel charge transport layer

Claim 1

An imaging member comprising a charge generation layer comprising a layer of photoconductive material and in contact therewith a charge transport layer of a polycarbonate resin material having dispersed therein from about 25 to about 75 percent by weight of one or more compounds having the general formula: ##STR3## wherein R 1 , R 2 , R 3 and R 4 are selected from the group consisting of hydrogen, an ortho, meta or para alkyl group having from 1to about 4 carbon atoms, an ortho, meta or para halogen atom, a para phenyl group and combinations thereof, at least two of the four N substituents must in turn be substituted with said alkyl group, said halogen atom or said para phenyl group or a combination of these substituents, said photoconductive layer exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially nonabsorbng in the spectral region at which the photoconductive layer generates and injects photogenerated holes, but being capable of supporting the injection of photogenerated holes from said photoconductive layer and transporting said holes through said charge transport layer.