Light scanning apparatus and image forming apparatus

Details Light scanning apparatus and image forming apparatus Light scanning apparatus and image forming apparatus

2006-02-14

2006-02-14

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S738000, C347S261000

Reexamination Certificate

active

06999218

ABSTRACT:
A width in a main scanning direction of a laser beam is decreased in the outside of an effective scanning region in such a manner that the width along the main scanning direction of the laser beam is restricted by an aperture portion of an aperture member. As a result, so-called flare light is prevented from generating, and a uniformity of light quantity is improved. Namely, in a light scanning apparatus adopting an overfilled optical system, a light scanning apparatus which can prevent degradation of image quality due to flare light is obtained.

REFERENCES:
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patent: 6185029 (2001-02-01), Ishihara
patent: 2001/0012043 (2001-08-01), Yamawaki et al.
patent: 2002/0018112 (2002-02-01), Nishiguchi et al.
patent: A 8-171069 (1996-07-01), None
patent: A 9-96769 (1997-04-01), None
patent: A 11-218702 (1999-08-01), None

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