Patent ID: 8293439

Claim:
An electrophotographic photoreceptor, comprising: a conductive substrate; a photosensitive layer located overlying the conductive substrate; and a surface layer located overlying the photosensitive layer, wherein the surface layer is a cross-linked resin surface layer formed by coating and curing a cross-linked resin surface layer coating liquid on the photosensitive layer, and the cross-linked resin surface layer coating liquid comprises a cross-linkable charge transport material, a trimethylolpropane triacrylate, a cross-linkable silicone material, and a non-cross-linkable silicone material, wherein the following inequations are satisfied: 0.005 <WRa ( LMH )<0.03 (i) 0.010 <WRa ( LHH )<0.03 (ii) 0.005 <WRa ( LML )<0.20 (iii) WRa ( LLH )> WRa ( LMH ) (iv) WRa ( LLH )> WRa ( LHH ) (v) wherein WRa (μm) represents a center-line average roughness of frequency components LHH, LHL, LMH, LML, LLH, and LLL that are obtained by a method comprising: subjecting a one-dimensional data array of a surface profile of the electrophotographic photoreceptor, which is measured with a surface roughness & profile shape measuring instrument, to wavelet transformation multiresolution analysis so as to be separated into 6 frequency components each having a cycle length (μm) of 0 to 3, 1 to 6, 2 to 13, 4 to 25, 10 to 50, and 24 to 99; thinning a one-dimensional data array of the lowest frequency component having a cycle length of from 24 to 99 (μm) so that the number of data array is reduced to 1/40; and subjecting the thinned one-dimensional data array to wavelet transformation multiresolution analysis so as to be separated into the 6 frequency components LHH, LHL, LMH, LML, LLH, and LLL each having a cycle length (μm) of 26 to 106, 53 to 183, 106 to 318, 214 to 551, 431 to 954, and 867 to 1,654, respectively.