Patent ID: 8609309

Claim:
An electrophotographic photoreceptor for use in an image forming apparatus that forms an image by exposing an electrophotographic photoreceptor with monochromatic light at a wavelength of 380 to 500 nm, wherein the electrophotographic photoreceptor comprises an electroconductive support having thereon a photosensitive layer, and said photosensitive layer contains an azo pigment and a polyarylate resin having a repeating partial structure derived from a dicarboxylic acid, the repeating partial structure represented by the following structural formula (5): O-Ar 13 -Q-Ar 14 -OC(═O)-Ar 15 -C(═O) (5) wherein Ar 13 and Ar 14 each represents an arylene group which may have a substituent, Ar 15 represents an arylene group which may have a substituent, or a divalent group represented by the following formula (A): -Ar 16 -O-Ar 17 - (A) wherein Ar 16 and Ar 17 each represents an arylene group which may have a substituent, and Q represents a single bond or —CR 16 R 17 —, wherein R 16 and R 17 — each independently represents a hydrogen atom, an alkyl group, an aryl group or a linked alicyclic structure.