ELECTROPHOTOGRAPHIC DEVICE

摘要

PURPOSE:To make it possible to form an additional picture not included in the picture of an original on a part of a copied picture or change a part of the original picture on the copied picture by exposing a part of a photoreceptor directly in an electrophotographic device copying the original picture on normal picture by using Carson process. CONSTITUTION:A light shuttering member 31 to be controlled by a shutter controlling circuit 35 is fitted to an optical axis of an optical fiber 22 and acted as a masking means. During the 1st exposure, the inside of a square ACBD is controlled at its operation by the shutter controlling device 35 so that the optical transmittivity of the light shuttering member 31 becomes zero to suppress the 1st exposure, and outside the square ACBD, an electrostatic latent image corresponding to a picture on an original surface 18 is formed. A light emitting diode 32 is turned on and off at the 2nd exposure position in accordance with the input information of a controlling part 34 to form a required picture additionally in the square ACBD.