Laser scanning unit

Details Laser scanning unit Laser scanning unit

2005-10-25

2005-10-25

Cherry, Euncha P. (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S205100, C359S216100

Reexamination Certificate

active

06958838

ABSTRACT:
A laser scanning unit is provided comprising a polygon mirror that deflects light beams respectively emitted by a plurality of light sources, an image focusing system that respectively focuses an image corresponding to each light beam deflected from the polygon mirror onto a surface of a plurality of photoconductive drums, and an incident optical system disposed between the light sources and the polygon mirror. The incident optical system comprises an infinite optical system along a main scanning direction and a finite optical system along a sub-scanning direction.

REFERENCES:
patent: 5963354 (1999-10-01), Shiraishi et al.
patent: 6788444 (2004-09-01), Suzuki et al.
patent: 08-160337 (1996-06-01), None
patent: 2000147399 (2000-05-01), None

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