Optical scanning device including plural light shielding...

Details Optical scanning device including plural light shielding... Optical scanning device including plural light shielding...

2006-08-15

2008-11-11

Allen, Stephone B. (Department: 2872)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

C359S196100

Reexamination Certificate

active

07450146

ABSTRACT:
An optical scanning device includes a plurality of light sources, a deflector, optical systems, and a plurality of light shielding units to shield flare light from an opposite optical system. Two light shielding units are arranged not to satisfy θ=n(360/x) degrees, where θ is an angle formed by a line from a portion of one light shielding unit nearest the deflector to a rotation axis of the deflector and a line from a portion of the other light shielding unit nearest the deflector to the rotation axis of the deflector with the rotation axis of the deflector being an apex angle, x is the number of mirror faces of the deflector, and n is an integer not more than x.

REFERENCES:
patent: 6697092 (2004-02-01), Bannai
patent: 6786590 (2004-09-01), Maki
patent: 6836633 (2004-12-01), Bannai
patent: 6891559 (2005-05-01), Bannai
patent: 2004/0100550 (2004-05-01), Bannai
patent: 2005/0093968 (2005-05-01), Iwamoto
patent: 2005/0174418 (2005-08-01), Sakaue
patent: 2006/0055769 (2006-03-01), Yamazaki
patent: 2002-196269 (2002-07-01), None
patent: 2003-202512 (2003-07-01), None

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