Optical exposer unit

Details Optical exposer unit Optical exposer unit

1996-03-29

1998-06-30

Phan, James

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359204, 359207, 359216, 359217, 347243, 347244, G02B 2608

Patent

active

057742499

ABSTRACT:
The present invention provides an image forming apparatus, which can provide a color image having no color shift with low manufacturing cost, and an optical exposer unit applied to the image forming apparatus. Thereby, the image forming apparatus comprises a finite focus lens for providing a predetermined optical characteristic to the laser beam sent from a plurality of light sources, a cylinder lens, a laser synthesizing mirror unit for synthesizing the laser beams passed through the lenses into one flux of beams, a deflector for deflecting the synthesized beam, first and second image forming lenses for shaping aberration characteristics provided on the image-formed position of the deflected beam, and one or three mirrors for emitting the beam passed through the respective image forming lenses at a predetermined position, thereby a color image having no color shift can be provided.

REFERENCES:
patent: 5181137 (1993-01-01), Koide
patent: 5245462 (1993-09-01), Kanai et al.
patent: 5251055 (1993-10-01), Koide
patent: 5278586 (1994-01-01), Yoneda et al.

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