Laser scanning unit and electrophotographic image forming...

Details Laser scanning unit and electrophotographic image forming... Laser scanning unit and electrophotographic image forming...

2005-01-04

2005-01-04

Eickholt, Eugene H. (Department: 2854)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S201100, C359S204200, C359S216100, C347S115000

Reexamination Certificate

active

06839156

ABSTRACT:
A laser scanning unit and an electrophotographic image forming apparatus adopting the same include a plurality of photogenerators emitting parallel lights, a plurality of rotatable polygonal mirrors which deflect the lights emitted from the photogenerators in a main scanning direction having a range of a predetermined angle to scan the lights onto photosensitive media proceeding in a sub scanning direction, the rotatable polygonal mirrors stacked on a driving unit to match corresponding ones of the photogenerators and coupled with a rotation shaft of the driving unit to rotate therewith, a plurality of first lenses which are installed in light paths between the photogenerators and the rotatable polygonal mirrors, respectively, and collect the lights in the sub scanning direction, and a plurality of second lenses which collect the lights deflected by the rotatable polygonal mirrors on corresponding ones of the photosensitive media.

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patent: 1997-036548 (1997-07-01), None
Notice to Submit Response.
Korean Office Action, dated Jul. 27, 2004.

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