| 摘要 |
PURPOSE:To improve remarkably the operation efficiency of a copy by constituting so that an emitted light of an optical system for copying the rear side of an original is made incident to an optical system for copying the surface of the original, and forming an original image on a common photosensitive drum. CONSTITUTION:A light source lamp 6 moves to a position shown by a dotted line from a position of a solid line, irradiating the rear side of an original 2 on a platen 1. The first movable mirror 4 moves by the same distance at a uniform speed following a movement of the light source lamp 6 to a position of a dotted line from a position of a solid line, reflecting light reflected by the original 2. The first fixed mirror 5 reflects light reflected by the movable mirror 4, and makes it incident to the second movable mirror 10. In this case, as for the movable mirror 10, its angle is changed as shown by a dotted line so that an optical axis of said reflected light coincides with an optical axis in case of copying the surface of the original. Accordingly, thereafter, light forms an image on a photosensitive drum 17 through the third mirror 11-the second fixed mirror 16. |
