| 摘要 |
PURPOSE:To obtain a copying picture with good pictue quality by using an absorbing filter for correcting uneven illumination intensity. CONSTITUTION:A slide picture is projected to a Fresnel lens 3 through a mirror 23 and an absorbing filter 22 by using a slide projector 24. As for this projected image, an uneven illumination intensity is corrected by the absorbing filter 22, therefore, the brightness of a part of the same density of the center part of the slide and its circumferential part is the same. This projected image is slit-exposed onto a photosensitive body 10 rotating in the direction as indicated with an arrow by an exposure scanning optical system consisting of moving mirrors 5, 6, a lens 7 and fixed mirrors 8, 9. In this case, an electrostatic latent image on the photosensitive body 10 is even since the projected image is uniform. Accordingly, thereafter, this electrostatic latent image is developed by a developing device 13, a copying picture transferred and fixed to a transfer material 14 which ..is contained in a paper feed cassette 18 and fed in by a paper feed roller 17, through a transfer charger 15 and fixing rollers 19, 20 is obtained with uniform picture quality. |
