Patent ID: 7625681

Claim:
An electrophotographic photoreceptor comprising: a conductive substrate; and a photosensitive layer provided on the conductive substrate, said photosensitive layer comprising a polymeric photoconduction material, said photoconduction material containing as a polymerized monomer an asymmetric bis-hydroxyenamine compound represented by the following general formula (1): wherein Ar 1 and Ar 2 each may be the same or different, and each represent an aryl group which may have a substituent or a heterocyclic group which may have a substituent; Ar 3 represents an arylene group which may have a substituent or a divalent heterocyclic group which may have a substituent; two Ar 4 s each may be the same or different, and each represent an arylene group which may have a substituent or a divalent heterocyclic group which may have a substituent; two Ar 5 s each may be the same or different, and each represent a hydrogen atom, an aryl group which may have a substituent, a heterocyclic group which may have a substituent, an aralkyl group which may have a substituent, or an alkyl group which may have a substituent; Ar 6 represents an arylene group which may have a substituent or a divalent heterocyclic group which may have a substituent; R 1 represents a hydrogen atom or an alkyl group which may have a substituent; 2n number of R 2 s and R 3 s and two R 4 s each may be the same or different, and each represent a hydrogen atom, an alkyl group which may have a substituent, an aryl group which may have a substituent, a heterocyclic group which may have a substituent, or an aralkyl group which may have a substituent; two pieces of “n”s may be the same or different, and each represent an integer of from 0 to 3; and Ar 3 and Ar 6 are not be same with each other.