COPYING MACHINE WITH PARTIAL WRITING FUNCTION

摘要

PURPOSE:To form a latent image of a pattern image on the surface of a photosensitive body by light irradiation from a fine light source group by providing the fine light source group nearby the photosensitive body at an exposure stroke position so that it is movable to an optional position in the axial direction of the photosensitive body, and turning on and off the fine light source group according to the input pattern image. CONSTITUTION:The pattern image such as a character string which is inputted by operating keys as an input means provided to a console panel 31 is stored temporarily in a RAM73 and the position and timing of a high-density LED array 2 are set on the basis of input position data and character data to form the pattern image on a form at a specific position. A partial writing device 1 equipped with the high-density LED array 2 is moved on the top surface of a blank lamp 21, so any other support member need not be provided and a rise in cost is suppressed low.