Patent ID: 7309552

Claim:
An electrophotographic photoconductor, comprising: a photoconductive layer on a conductive support, wherein the electrophotographic photoconductor contains an azo compound expressed by Formula (1) wherein, in Formula (1), r 1 and r 2 represent one of hydrogen atom, alkyl group, alkoxy group, halogen atom, nitro group, amino group, cyano group, acetyl group, benzoyl group which may have a substituent, carboxyl group, alkoxycarbonyl group, phenoxycarbonyl group which may have a substituent and aryl group which may have a substituent, CP 1 and CP 2 represent a coupler residue, and at least one of the CP 1 and the CP 2 is a coupler residue selected from a group consisting of Formula (2), Formula (3) and Formula (4), wherein, in Formula (2), Formula (3) and Formula (4), R 1 , R 2 , R 3 and R 4 represent one of hydrogen atom, alkyl group, alkoxy group, halogen atom, amino group, hydroxy group, nitro group, cyano group, acetyl group, benzoyl group which may have a substituent, alkoxycarbonyl group, phenoxycarbonyl group which may have a substituent and carbamoyl group which may have a substituent, provided that R 1 and R 2 may be mutually bonded to form one of a substituted or non-substituted ring by alkylene group, a substituted or non-substituted unsaturated aliphatic ring and a substituted or non-substituted aromatic ring, X represents one of hydrogen atom, a substituted or non-substituted alkyl group, a substituted or non-substituted cycloalkyl group, a substituted or non-substituted aromatic hydrocarbon group, a substituted or non-substituted heterocyclic group and a substituted or non-substituted amino group, and Y represents one of a substituted or non-substituted alkylene group, a substituted or non-substituted cycloalkylene group, a substituted or non-substituted aralkylene group, a substituted or non-substituted bivalent organic residue having aromaticity, a substituted or non-substituted bivalent organic residue having heterocyclic aromaticity, bivalent organic residue containing carbonyl group expressed by —CO-Z-, provided that Z represents one of a substituted or non-substituted alkylene, a substituted or non-substituted cycloalkylene, a substituted or non-substituted bivalent organic residue having aromaticity and a substituted or non-substituted bivalent organic residue having heterocyclic aromaticity.