Multi-beam exposure unit

Details Multi-beam exposure unit Multi-beam exposure unit

1999-09-03

2000-08-15

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359205, 359212, 359216, G02B 2608

Patent

active

061045195

ABSTRACT:
This invention has as its object to provide an image forming apparatus which can provide a color image free from any color misregistration with low cost, and a light scanning unit suitable for the apparatus. The apparatus includes a finite lens and a cylinder lens for giving predetermined characteristics to light beams emitted by a plurality of light sources, a laser synthesis mirror unit for synthesizing laser beams passing through the lenses, a deflection unit for deflecting the synthesized light beams, first and second image-forming lenses for adjusting the aberration characteristics, at the imaging position, of the deflected light beam, one or three mirrors for outputting the light beam passing through the image-forming lenses at predetermined positions, and can provide a color image free from any color misregistration.

REFERENCES:
patent: 4751462 (1988-06-01), Shiraishi et al.
patent: 5181137 (1993-01-01), Koide
patent: 5251055 (1993-10-01), Koide

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