| 摘要 |
PURPOSE:To prevent malfunction, and to raise reliability by constituting so that a count number for an inversion can be changed in accordance with a size of an original. CONSTITUTION:As for an original, an optical path length is held equally by an illuminating lamp 9, a moving reflecting mirror 8, and a reflecting mirror 6 moving in the same direction at a moving speed of 1/2 of this mirror 8. An image is formed on a drum 30 through a lens 17 and reflecting mirrors 18, 19. In this case, a moving means for scanning the original, a size signal generating means and consecutive pulse signals are counted basing on a prescribed position or a prescribed timing of an original scanning cycle as a reference, and are selected in accordance with this count number, and the moving means is inverted by the count end of its selected number. |
