Patent ID: 7396624

Claim:
An electrophotographic photoreceptor comprising an electrically conductive substrate and a photosensitive layer formed thereon, the photosensitive layer comprising a naphthalenetetracarboxylic acid diimide derivative of Formula (1): wherein R 1 and R 2 are independently selected from the group consisting of a hydrogen atom, a halogen atom, a C 1 -C 20 substituted or unsubstituted alkyl group, and a C 1 -C 20 substituted or unsubstituted alkoxy group; R 3 is selected from the group consisting of a C 1 -C 20 substituted or unsubstituted alkyl group, a C 1 -C 20 substituted or unsubstituted alkoxy group, a C 7 -C 30 substituted or unsubstituted aralkyl group, and a group having the formula —(CH 2 ) n —Y—R 4 ; Ar is a C 6 -C 30 substituted or unsubstituted aryl group; Y is an oxygen or sulfur atom; R 4 is a hydrogen atom or a C 1 -C 20 substituted or unsubstituted alkyl group; and n is an integer between 1 and 12.