Polygonal mirror unit, light scanning unit, and image...

Details Polygonal mirror unit, light scanning unit, and image... Polygonal mirror unit, light scanning unit, and image...

2007-08-28

2007-08-28

Cherry, Euncha P. (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C347S261000

Reexamination Certificate

active

11211685

ABSTRACT:
A polygonal mirror unit is adapted to prevent contamination using a photocatalyst, a light scanning unit, and an image forming apparatus employing the polygonal mirror. The polygonal mirror unit is designed to prevent contamination of organic materials on a reflective surface. The polygonal mirror unit includes a driving device and a polygonal mirror having a reflective surface that is rotated by the driving device and deflects and scans an incident beam. The polygonal mirror has a main body with a plurality of reflective surfaces and photocatalytic layers formed on the plurality of reflective surfaces. The photocatalytic layers are activated by an incident beam of a predetermined wavelength to decompose organic materials on the reflective surfaces.

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