Light scanning apparatus and image forming apparatus using...

Details Light scanning apparatus and image forming apparatus using... Light scanning apparatus and image forming apparatus using...

2006-11-14

2006-11-14

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S204200, C359S216100, C347S232000, C347S233000, C347S244000, C347S259000

Reexamination Certificate

active

07136208

ABSTRACT:
A light scanning apparatus capable of printing with a high quality and an image forming apparatus using the same are obtained. The light scanning apparatus is provided with an incidence optical system for guiding a light beam emitted from a light source part to a deflection part; an imaging optical system provided with a diffracting surface having a power at least in a sub-scanning section that guides the light beam deflected by the deflection part on a surface to be scanned; and a surface inclination correction function, in which a principal ray of the light beam is always positioned outside of a main scanning section during scanning. In the light scanning apparatus, each element is set so as to satisfy each conditional expression.

REFERENCES:
patent: 6067106 (2000-05-01), Ishibe et al.
patent: 6643043 (2003-11-01), Kato
patent: 9-54263 (1997-02-01), None
patent: 10-333070 (1998-12-01), None

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