| 摘要 |
PURPOSE:To provide an electrophotographic copying method having no unevenness in an transferred image, not causing failure of separation, and fluctuation of a copy image during repeated uses, by using an Se-As photoreceptor high in optical fatigue, and light emitted from a specified light source, and executing exposure before transfer at a good timing. CONSTITUTION:PTL4 (pretransfer lamp) is selected from electroluminescence, a light emitting diode, and a fluorescent lamp, having >=70% energy of the visible light region in 480-580nm wavelength width. At the start of an electrophotographic copying process, rotation of an Se-As photoreceptor 1 is begun, PTL4 first emits light to expose the photoreceptor 1, when its circumference part comes near a charger 2, it charges the photoreceptor 1, and imagewise exposure takes place. An electrostatic latent image is perfectly formed at this timing on the circumferential region of the photoreceptor exposed to light from PTL4 from the first cycle of the process, and hence, copy image density is normal from the first copy, deterioration of image density from the second copy forth is not observed by the eye, and no residual image occurs. |
