| 摘要 |
In an image forming apparatus, in a state where the control unit controls the rotation speed of the photosensitive member to Vp1, a control unit causes N light-emitting elements out of the plurality of light-emitting elements to emit the light beams and controls the rotation speed of the rotating polygonal mirror to Vr1, and in a state where the control unit controls the rotation speed of the photosensitive member to Vp2 lower than Vp1, the control unit causes M (M<N) light-emitting elements out of the plurality of light-emitting elements to emit the light beams and controls the rotation speed of the rotating polygonal mirror to Vr2 different from Vr1. |
