Abstract: An electrophotographic apparatus in which image formation is carried out by repeating charging, dot exposure, development, transfer, separation, and cleaning wherein the electrophotographic apparatus employs a photoreceptor composed of a support having thereon a photosensitive layer, and in which the machined circumferential surface, which is regularly formed in the direction along with the center axis of cylindrical support, satisfies Formula 1 below.L/A=n+(0.35 to 0.65) Formula 1whereinL: machined cycle width (.mu.m)A: recording dot pitchn: integer of 0 or moreThe electrophotographic apparatus is obtained which causes neither interference fringes or streaking due to the unevenness of the coating layer and the machined substrate surface.