Patent ID: 7413836

Claim:
An electrophotographic photoreceptor comprising: an electrically conductive substrate; a charge generating layer disposed on the electrically conductive substrate and comprises a charge generating material dispersed or dissolved in a binder resin and a naphthalenetetracarboxylic acid diimide derivative represented by Formula 1 and dispersed or dissolved in the binder resin; and a charge transporting layer disposed on the charge generating layer and comprises a charge transporting material dispersed or dissolved in a binder resin, wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , and R 7 are each independently selected from the group consisting of a hydrogen atom, a halogen atom, a substituted or unsubstituted C 1 -C 20 alkyl group, a substituted or unsubstituted C 1 -C 20 alkoxy group, a substituted or unsubstituted C 6 -C 30 aryl group, and a substituted or unsubstituted C 7 -C 30 aralkyl group.