Patent ID: 6852458

Claim:
An electrophotographic photoreceptor, in which a photosensitive layer is provided on an electrically conductive substrate either directly or via an undercoat layer; wherein said photosensitive layer contains a compound having a structure represented by undermentioned general formula (I): wherein R 1 to R 4 and R 9 to R 12 are the same or different and each represents a hydrogen atom, an optionally substituted alkyl group having 1 to 12 carbon atoms, an optionally substituted cyclic alkyl group, an optionally substituted aryl group, or an alkoxy group having 1 to 6 carbon atoms; R 5 and R 8 are the same or different and each represents a hydrogen atom, an optionally substituted alkyl group having 1 to 12 carbon atoms, an optionally substituted aryl group, or an optionally substituted heterocyclic group; R 7 and R 8 are the same or different and each represents a hydrogen atom, an optionally substituted alkyl group having 1 to 12 carbon atoms, an optionally substituted aryl group, or an alkoxy group having 1 to 6 carbon atoms; and each of the optional substituents is a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an aryl group, or a heterocyclic group.