Optical scanner and image-forming device

Details Optical scanner and image-forming device Optical scanner and image-forming device

2006-06-30

2011-12-20

Allen, Stephone B (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S219200, C347S257000, C347S260000, C347S263000

Reexamination Certificate

active

08081365

ABSTRACT:
An scanning unit scanner includes a light source and a polygon mirror unit. A front-to-rear rib is disposed between the light source and the polygon mirror unit and near the polygon mirror unit. An input side opening having a slit shape is formed as a cutout in the top edge of the front-to-rear rib. When laser light from the light source passes through the input side opening, the input side opening restricts the width of the light in a main scanning direction.

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