Laser beam scanner

Details Laser beam scanner Laser beam scanner

2007-01-02

2007-01-02

Pham, Hai (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

C347S258000

Reexamination Certificate

active

09927520

ABSTRACT:
In a laser beam scanner according to the invention, L2/L1>L4/L3is satisfied, where L2/L1is the lateral magnification in the sub-scanning direction in an optical path from a polygon mirror to a photosensitive drum, and L4/L3is the lateral magnification in the sub-scanning direction in an optical path from the polygon mirror to a beam detector. Accordingly, the light-receiving width of the beam detector can be reduced as compared with a conventional laser beam scanner where L2/L1=L4/L3.

REFERENCES:
patent: 4847492 (1989-07-01), Houki
patent: 5621562 (1997-04-01), Hama
patent: 5663558 (1997-09-01), Sakai
patent: 6239828 (2001-05-01), Ito et al.
patent: 6317244 (2001-11-01), Ishibe
patent: 6476955 (2002-11-01), Yoshida
patent: 6888559 (2005-05-01), Ito et al.
U.S. Appl. No. 09/758,144, filed Jan. 12, 2001, Ito et al.

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