Electrophotographic recording elements containing photoconductive perylene pigments

Claim 1

An electrophotographic recording element having a layer comprising a photoconductive perylene pigment that is sufficiently finely and uniformly dispersed in a polymeric binder to provide the element with an electrophotographic speed at least substantially equivalent to the electrophotographic speed of an element having a corresponding layer formed from the same pigment by vacuum sublimation in the absence of said polymeric binder, said perylene pigment having the formula: ##STR93## where each R is a phenethyl radical, R 1 is hydrogen, alkyl, cycloalkyl, aralkyl, aryl, heteroaryl, alkoxy, mono- or dialkylamino, or when the compound of Formula I is a dimer, R 1 is 1,4-phenylene, each Z is 2,3-naphthylene, 2,3-pyridylene, 3,4-pyridylene, 3,4,5,6-tetrahydro-1,2-phenylene, 9,10-phenanthrylene, 1,8-naphthylene, the radical ##STR94## where R 2 is alkyl, cycloalkyl, aralkyl, aryl, heteroaryl, alkoxy, dialkylamino, halogen, cyano, or nitro, or when the compound of Formula II is a dimer, Z is 1,2,4,5-benzenetetrayl or 3,3',4,4'-biphenyltetrayl, and m is a number from 0 to 4,