PHOTOSENSITIVE DEVICE WITH ORGANIC TOPCOAT CONTAINING 2,4,7-TRINITRO-9-FLUORENONE DISPERSED IN POLY (VINYLCARBAZOLE)

摘要

Disclosed is an electrostatographic photosensitive device which exhibits improved cycling characteristics. The device comprises:a) a conductive substrate;b) a uniform layer on the conductive substrate of a hole generating photoconductive material; andc) an organic layer overcoating the layer of photoconductive material of poly (vinylcarbazole) having dispersed therein 2,4,7-trinitro-9-fluorenone in an amount of from 0.01 to 10 percent by weight of the organic layer.