| 摘要 |
PROBLEM TO BE SOLVED: To provide a writing unit and an image forming device capable of reducing the fluctuation of a laser beam due to the rotational vibration or the resonance of a driving system and realizing high image quality by providing the writing unit with a dynamic vibration reducer. SOLUTION: This writing unit 1 constituted of an optical unit 3 having a laser beam source part 5, a polygon motor 6 and an Fθ lens 7, a reflecting mirror 4 reflecting the laser beam 8 radiated from the unit 3 to a photoreceptor 9, and a housing 2 holding the unit 3 and the mirror 4 is provided with the dynamic vibration reducer 12 generating characteristic frequency coincident with resonance frequency generated in the unit 1 and constituted of an elastic member 10 and a weight 11 coupled with the member 10. |
