ELECTROPHOTOGRAPHIC PHOTORECEPTOR, ELECTROPHOTOGRAPHIC PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor that has good storage characteristics and good optical resistance, as well as a process cartridge and an image forming apparatus.SOLUTION: There is provided an electrophotographic photoreceptor including at least a photosensitive layer on a conductive substrate, where the photosensitive layer is a lamination type including a charge transport layer and a charge generating layer; the charge transport layer contains four or more types of compounds present within a maximum absorption wavelength range from 300 nm to 600 nm in a 0.001 weight% tetrahydrofuran solution at 25°C; and at least four types of compounds of the four or more types of compounds have the maximum absorption wavelength present in the wavelength range separated 10 nm or more from one another.