Patent ID: 8450034

Claim:
An electrophotographic photoreceptor comprising a conductive support and provided thereon, a charge generation layer and a charge transport layer, wherein the charge generation layer comprises a pyranthrone pigment, and the charge transport layer comprises at least one of compounds represented the following Formula (1) or Formula (2): wherein each of R 1 and R 2 represents an alkyl group having 1-5 carbon atoms, an alkoxy group having 1-5 carbon atoms, or a halogen atom; each of m and n represents an integer of 0-5; and each of R 3 -R 5 represents a hydrogen atom, an alkyl group having 1-5 carbon atoms, or an alkoxy group having 1-5 carbon atoms, provided that there is no case for all of R 3 -R 5 being hydrogen atoms, wherein each of R 6 -R 9 represents an alkyl group having 1-5 carbon atoms, an alkoxy group having 1-5 carbon atoms, a halogen atom, an aryl group, a cyano group, a nitro group, or a hydroxyl group; o represents an integer of 0-5 and p represents an integer of 0-4, provided that there is no case for both and p being 0; each of R 10 -R 15 represents a hydrogen atom, an alkyl group or alkoxy group having 1-5 carbon atoms, a halogen atom, an aryl group, a cyano group, a nitro group, or a hydroxyl group, provided that there is no case for all of R 10 -R 15 being hydrogen atoms; each of R 16 and R 17 represents an alkyl group or an aryl group; and R 16 and R 17 may be bonded to form a cyclic structure.