Patent ID: 8003286

Claim:
An electrophotographic photoreceptor comprising a conductive support having thereon a photosensitive layer containing: a zirconium compound represented by the following general formula (1): wherein R 1 is quaternary carbon, methine, or methylene; Y represents a cyclic structure comprising R 1 bonded via a saturated bond or an unsaturated bond and at least one carbon atom forming the cyclic structure may be replaced by a heteroatom selected from N, S, O, or P; R 2 and R 3 may be the same or different and each represents an alkyl group, an alkenyl group, an alkoxy group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aralkyloxy group, a halogen atom, a hydrogen atom, a hydroxyl group, a substituted or unsubstituted amino group, a carboxyl group, a nitro group, a nitroso group, or a cyano group; R 4 represents a hydrogen atom or an alkyl group; l is an integer of 0 to 12; m is an integer of 1 to 20; n is an integer of 0 to 20; o is an integer of 0 to 4; p is an integer of 0 to 4; q is an integer of 0 to 3; r is an integer of 1 to 20, and s is an integer of 0 to 20; provided that when p is an integer of 2 to 4, two to four R 3 's may be the same or different from each other, and one or more charge transport agents having an arylamino group in its molecule.