| 摘要 |
An image forming device, characterized in that the shape of the optical path of a third laser beam from a third semiconductor laser ( 19 M) to a third photo-sensitive member drum (IM) is approximately the same as that of the optical path of a first laser beam from a first semiconductor laser ( 19 C) to a first photo-sensitive member drum ( 1 C), a second virtual line connecting the rotating center of the third photo-sensitive member drum (IM) to the rotating center of a fourth photo-sensitive member drum (IK) is tilted relative to a first virtual line connecting the rotating center of the first photo-sensitive member drum ( 1 C) to the rotating center of the second photo-sensitive member drum (IY), and an angle formed by the rotating axis (x 2 ) of a second rotating polygon mirror ( 20 b) and the second virtual line ( 12 ) is equal to an angle formed by the rotating axis (x 1 ) of a first rotating polygon mirror ( 20 a) and the first virtual line ( 11 ). |
