Patent ID: 6858364

Claim:
An electrophotographic photoreceptor containing a composition comprising an asymmetric phthalocyanine compound represented by the general formula (IV) and a phathalocyanine compound represented y the general formula (V) as a charge generation material: wherein X 1 , X 2 and X 3 are each a benzene ring, a pyrazine ring, or a naphthalene ring to which a halogen atom, a nitro group, an alkyl group, or an alkoxy group may be bonded, provided that at least one of X 1 , X 2 and X 3 is a naphthalene ring; R 1 to R 16 are each a hydrogen atom, a halogen atom, a nitro group, an alkyl group or an alkoxy group; and M 1 and M 2 are each an atom selected from hydrogen (H 2 ), Cu or Al to which chloride is bonded, or M 1 and M 2 are an atom, to which oxygen, halogen or hydroxyl is bonded, selected from the group consisting of Ti, V, Zr, Ge, Ga, and In.