Patent ID: 7494754

Claim:
An electrophotographic photoreceptor comprising: an electrically conductive substrate; a photosensitive layer formed on the electrically conductive substrate, wherein the photosensitive layer comprises an asymmetric naphthalenetetracarboxylic acid diimide derivative represented by Formula (1): wherein R 1 and R 2 are independently selected from the group consisting of a substituted or unsubstituted C 1 -C 20 alkyl group, a substituted or unsubstituted C 1 -C 20 alkoxy group, and a hydrogen atom; R 3 is a linear or branched C 1 -C 20 alkyl group and R 4 is an unsubstituted C 1 -C 20 alkyl group; and Ar is a substituted or unsubstituted C 6 -C 30 aryl group.