Electrophotographic photoconductor

Claim 1

In an electrophotographic photoconductor consisting essentially of a photoconductive layer comprising a charge carrier producing pigment and a charge transporting material, and an electroconductive supporting material for supporting said photoconductive layer thereon, the improvement comprising said charge transporting material being a compound selected from the group consisting of anthracene compounds of the formula: ##STR44## wherein X represents hydrogen or a halogen atom and R represents an unsubstituted phenyl radical, a substituted phenyl radical having a halogen substituent, a cyano substituent, a lower dialkyl amino substituent with one to four carbon atoms, a lower alkoxy substituent with one to five carbon atoms, and a nitro substituent, a naphthyl radical, an anthryl radical, and a carbazoyl radical, and said charge carrier producing pigment being an azo pigment selected from the group consisting of ##STR45## wherein substituent A of the formulas is ##STR46## is selected from the group consisting of a hydrocarbon aromatic ring, a heterocyclic ring, substituted hydrocarbon aromatic rings and substituted heterocyclic rings; Ar 1 is selected from the group consisting of a hydrocarbon aromatic ring, a heterocyclic ring, substituted hydrocarbon aromatic and substituted heterocyclic rings; Ar 2 and Ar 3 are each selected from the group consisting of a hydrocarbon aromatic ring and substituted hydrocarbon aromatic rings; R 1 and R 3 are selected from the group consisting of hydrogen, lower alkyl, phenyl, substituted lower alkyl and substituted phenyl and R 2 is selected from the group consisting of lower alkyl, carboxyl and ester derivatives of said carboxyl group, the weight ratio of said charge transporting material in said layer ranging from 10 to 60% and the weight ratio of said charge carrier producing pigment in said layer ranging from 50% to 1%.