Patent ID: 8404416

Claim:
An electrophotographic photoreceptor comprising, over an electroconductive substrate, a photosensitive layer and a surface protection layer in this order, the surface protection layer satisfying each of the following requirements (1) to (3): (1) comprising a crosslinked substance of at least one selected from a compound having a guanamine structure or a compound having a melamine structure, and at least one charge transporting material having at least one substituent selected from —OH —OCH 3 , —NH 2 , —SH or —COOH; (2) comprising the at least one selected from a compound having a guanamine structure or a compound having a melamine structure in an amount of from about 0.1% by weight to about 5% by weight; and (3) having a universal hardness of from about 180 N/mm 2 to about 220 N/mm 2 and a creep ratio of from 5.1% to about 8%, the universal hardness and the creep ratio being obtained by performing a hardness test by pushing a Vickers quadrangular pyramid diamond indenter against the surface protection layer at a maximum load of 20 mN, in an environment of 25° C. and a relative humidity of 50%.