| 摘要 |
PURPOSE:To clarify the boundary between an image part and a non-image part by providing a shutter with an aperture part, which can be superposed on a slit of a light shielding member, to synchronize the moving speed of the shutter and the peripheral speed of a photosensitive body with each other. CONSTITUTION:A shutter 2 is provided with an aperture part 10 which can be superposed on a slit 1a of a light shielding member 1, and a fixed mirror 11 which rises from the shutter surface at 45 deg. in the clockwise direction is provided in the edge in the side of the second shaft fixing part 9b of the aperture part 10, and the image light from an original picture is intercepted by the upper face in the initial set position of the shutter 2, and the slit 1a is closed. The reflecting face reflects the light of a destaticizing lamp 115 to expose a photosensitive body 108 in case of positive-positive. Meanwhile, a movile mirror 12 is attached to the other edge of the aperture part 10 and is turnable through a shaft 13 attached to one ends of supporting parts 12a which rise on both sides to face each other at right angles to the shutter surface. |
