| 摘要 |
PURPOSE:To obtain a black-and-red dichromatic copy of superior picture qualiby by forming a red separated electrostatic latent image of an original on a cleaned P type photosensitive body, developing it with black toner and superposing and transferring the obtained black toner image on and to a red toner image on a dielectric, and transferring the obtained black-and-red toner image to a form and fixing the image. CONSTITUTION:The P type photosensitive drum 1 after the red toner image is transferred to the dielectric is cleaned by a cleaning device 13 and destaticized by a destaticizing lamp 9, and then charged electrostatically, positively and uniformly by an electrifier 7 again. The photosensitive body is exposed to an original light image which is passed through the red filter installed in a filter turet 18 and reflected by a mirror to form the red electrostatic latent image of the original on the photosensitive drum 1. This electric latent image is developed by the developing roller 6 of a developing device 4 which contains negative black toner and the obtained black toner image is superposed on and transferred to the red toner image of the original carried on the dielectric. The resulting black-and-red dichromatic toner image is transferred to a form fed out of a form tray 25 by a feed roller 28 through an electrifier 11 for transfer and separation, and then fixed at a fixing part. |
