ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor capable of suppressing occurrence of a ghost, black spots and density unevenness and improving cycling characteristics of residual potential, a process cartridge and an image forming apparatus. SOLUTION: The electrophotographic photoreceptor 100 comprises a conductive support 3, an undercoat layer 4 disposed on the conductive support 3 and containing conductive metal oxide particles surface-treated with a silane coupling agent, an electron-accepting material, a binder resin and a curing agent, a charge generating layer 1 disposed on the undercoat layer 4, and a charge transport layer 2 disposed on the charge generating layer 1. When the thickness of the undercoat layer 4 is 20μm, transmittance of the underlayer 4 to light of 950 nm wavelength is≥85%. The undercoat layer 4 has a volume resistivity of 1×1010to 1×1012Ωcm. COPYRIGHT: (C)2008,JPO&INPIT