Patent ID: 7381511

Claim:
A photoreceptor comprising: an electroconductive substrate; a photosensitive layer located overlying the electroconductive substrate; and optionally a protective layer located overlying the photosensitive layer, wherein an outermost layer of the photoreceptor comprises a filler, an organic compound having an acid value of from 10 to 700 mg KOH/g and at least one compound selected from the group consisting of compounds having the following formula (1): wherein R 1 and R 2 independently represent a substituted or an unsubstituted aromatic hydrocarbon group, or a substituted or an unsubstituted alkyl group, and optionally share bond connectivity to form a heterocyclic group including a nitrogen atom; Ar 1 and Ar 2 independently represent a substituted or a unsubstituted aromatic ring group; k and m independently represent 0 or an integer of from 1 to 3, wherein k and m are not 0 at the same time; and n represents an integer of from 1 to 3, and compounds having the following formula (2): wherein R 3 and R 4 independently represent a substituted or an unsubstituted aromatic hydrocarbon group, or a substituted or an unsubstituted alkyl group, and optionally share bond connectivity to form a heterocyclic group including a nitrogen atom; Ar 3 and Ar 4 independently represent a substituted or a unsubstituted aromatic ring group; K and M independently represent 0 or an integer of from 1 to 3, wherein K and M are not 0 at the same time; and n′ represents an integer of from 1 to 3.