Patent ID: 8110326

Claim:
An electrophotographic photoreceptor, comprising: a conductive substrate; and a photosensitive layer located overlying the conductive substrate, comprising a naphthalenetetracarboxylic acid diimide derivative having the following formula (1): wherein each of R 1 , R 2 , R 3 , and R 4 independently represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aromatic hydrocarbon group; each of R 5 , R 6 , R 7 , and R 8 independently represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aromatic hydrocarbon group; wherein R 1 and R 2 do not share bond connectivity to form a substituted or unsubstituted heterocyclic group containing a nitrogen atom; and R 3 and R 4 do not share bond connectivity to form a substituted or unsubstituted heterocyclic group containing a nitrogen atom.