| 摘要 |
PURPOSE:To uniformize degradation degree by moving a support plate for fixing plural light-emitting members in prescribed intervals. CONSTITUTION:The light-emitting members 3 are arranged in prescribed intervals and fixed to the support plate 4, and the plate 4 is held at a first position A by a spring 6. When a solenoid 7 is turned on by the switch 10 of a power supply 9, the solenoid 9 pulls the plunger of the solenoid against the force of the spring 6 and moves the plate 4 to a second position B, thus permitting the light-emitting members 3 to be moved and to nearly uniformize the exposure amount to a latent image bearing body, and consequently deterioration of a photosensitive body to be minimized. |
