| 摘要 |
PURPOSE:To smooth the stopping of scanning in an optical device which uses the 1st mirror and the 2nd mirror traveling at a 1:1/2 speed ratio relatively with each other in scanning and exposing of an original, by disposing both traveling bodies slidably on the same shaft, and bringing both traveling bodies in contact with each other at both ends of the scanning width. CONSTITUTION:The 1st mirror system 3 and the 2nd mirror systems 4, 5 move at a 1:1/2 speed ratio relatively with each other, and project the image of an original 0 through a lens 6 to a sensor 7. The 1st traveling body 8 which holds the system 3 and the 2nd traveling body 9 which holds the system 4, 5 are disposed slidably on a shaft 11. Both bodies 8, 9 are brought into contact with each other at the start and end points of scanning; therefore, even if the traveling is not blocked by a special elastic body, the traveling is stopped smoothly. |
