Patent ID: 6322940
Filing Date: 2001-11-27
Classification: G03G,Y10S

Abstract:
An electrophotographic photoreceptor for use in an image forming apparatus for forming a latent image at a resolution of 1200 dpi or more by exposing an object to light and visualizing the latent image with a reversal development system using a toner having an average particle size of 6 .mu.m or less, the electrophotographic photoreceptor comprising:an electrically conductive support; anda photosensitive layer composed of a charge generating layer formed on the electrically conductive support, containing an oxotitanyl phthalocyanine as a charge generating material, and a charge transport layer formed on the charge generating layer, having a thickness of 20 .mu.m or less and containing an enamine structural material shown by the following formula (I) as a charge transporting material: ##STR10##wherein Ar represents an aryl group which may have a substituent, a heterocyclic group which may have a substitutent, an aralkyl group which may have a substitutent, or an alkyl group having a heterocyclic substitutent, and n represents 2, 3 or 4wherein the oxotitanyl phthalocyanine shows, in an X-ray diffraction spectrum of CuK.alpha. characteristic X-ray (wavelength: 1.5418 .ANG.), main strong diffraction lines at Bragg angles (2.theta..+-.0.2.degree.) of 9.3.degree., 9.5.degree., 9.7.degree., and 27.2.degree..