| 摘要 |
PURPOSE:To prevent disturbance of image formed on a recording paper by providing a vibration restraining means to restrain the vibration generated at movement of a movable body by magnetic attraction force, and a control means to control the magnetic attraction force of the vibration restraining means. CONSTITUTION:A first and a second mirror base (movable body) 1, 2 are slidably fitted on a guide shaft 3, and reciprocatably placed on a rail 6 through rollers 4, 5. A detecting means 13 detects that the first and the second mirror bases 1, 2 are on the decided positions. A vibration restraining means 60 restrains the vibration generated at movement of the first and second mirror bases 1, 2 by magnetic attraction force. A control means 16 controls the magnetic attraction force of the vibration restraining means 60 based on signals from an operating part and the detecting means 13. Thus, disturbance of the image formed on a recording paper can be prevented. |
