| 摘要 |
PROBLEM TO BE SOLVED: To provide the mounting structure of a reflecting mirror which is made difficult to be affected by vibration in which any adverse influence on printing can be prevented. SOLUTION: A reflecting mirror 24 is formed in fine width, and formed long sideways in the scanning direction of a laser beam, and the reflecting mirror 24 is arranged while a reflecting surface 2402 is faced obliquely downward at the upper part of a window 32 of a bottom wall 16 so that a laser beam can be reflected from the window 32 to a lower photosensitive drum. The reflecting mirror 24 is supported so that the angle can be adjusted by three male screw members 34, 36, and 38 screwed into a bottom wall 32, and butted to the reflecting surface 2402 of the reflecting mirror 24, and three leaf springs 42 resiliently brought into contact with a back face 2406 of the reflecting mirror 24. The two male screw members 34 and 38 are arranged at the both edges in the longitudinal direction of the reflecting mirror 24 at the outside of the window 32, and the residual one male screw member 36 is arranged at the central part of the longitudinal direction of the reflection mirror 24. |
