Laser scanning unit and image forming apparatus

Details Laser scanning unit and image forming apparatus Laser scanning unit and image forming apparatus

2007-10-04

2009-11-17

Cherry, Euncha P (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

Reexamination Certificate

active

07619800

ABSTRACT:
A laser scanning unit and an image forming apparatus that include a deflector to deflect incident light; and a plurality of sub-scanning optical systems using the same reflective surface of the deflector. Each of the sub-scanning optical systems includes a light source, an entrance optical unit disposed between the light source and the deflector to direct light to the deflector, and an exit optical unit to direct the deflected light to imaging surfaces. Optical paths of the sub-scanning optical systems are asymmetric with reference to the deflector.

REFERENCES:
patent: 7277212 (2007-10-01), Miyatake et al.
patent: 2006/0203264 (2006-09-01), Miyatake

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