Rotary deflector, optical scanning unit and image forming...

Details Rotary deflector, optical scanning unit and image forming... Rotary deflector, optical scanning unit and image forming...

2008-07-01

2008-07-01

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S198100

Reexamination Certificate

active

07394582

ABSTRACT:
The inventive device reduces noises and stabilizes the image quality of an image forming apparatus by reducing vibration thereof by reducing vibration of a driving source itself within a preset frequency range without changing the resonating condition of a housing. A mass member is added to a stationary shaft of a driving motor for rotating a polygon mirror. It then becomes possible to reduce the vibration and noise of an image forming apparatus by avoiding resonation by moving a resonance point by adding the mass member to the stationary shaft. Thus, a high image quality image forming apparatus can be realized.

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