Light scanner and image formation apparatus therewith

Details Light scanner and image formation apparatus therewith Light scanner and image formation apparatus therewith

2005-01-11

2005-01-11

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S196100, C359S740000

Reexamination Certificate

active

06842274

ABSTRACT:
A light scanner has a light source1of a two-dimensional array consisting of a plurality of light source elements, a coupling lens system2for collimating a light flux from the light source1, a shaping lens system (cylindrical lens4and lens5) for shaping the light flux, light beam deflection means6for deflecting and scanning the post-shaped light flux, and a scanning lens system7for forming an image of the deflected and scanned light flux on a scanned medium8. Assuming that the focal length of the coupling lens system2is f, a slit3for limiting the subscanning direction width as a member for shielding a part of the light flux is placed at a location at a distance of about f from the coupling lens system2in an opposite direction to the light source1.

REFERENCES:
patent: 5581392 (1996-12-01), Hayashi
patent: 5610647 (1997-03-01), Takada
patent: 6229638 (2001-05-01), Sakai et al.
patent: 60-33019 (1985-07-01), None
patent: 62-239119 (1987-10-01), None

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