Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent
1998-01-08
1999-08-03
Le, N.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
347248, 347235, 347250, 347261, 359216, 359226, B41J 2435
Patent
active
059331828
ABSTRACT:
Color banding resulting from facet-to-facet jitter in a color imaging device having a plurality of multifaceted polygons is reduced by matching the facets of the various polygons such that the composite image produced by the matched facets result in minimal color banding. The latent images are registered by starting each latent image with a selected "starting" facet such that the matched facets trace corresponding scan lines. Imaging offsets that would result from either advancing or retarding the exposure of a latent image such that the latent images begin with the correct facet are compensated for by moving a rotating cylinder mirror in each polygon such that the latent images are registered. Moving of the cylinder mirror is beneficially achieved using a controlled piezoelectric element.
REFERENCES:
patent: 5498869 (1996-03-01), Appel et al.
patent: 5674656 (1997-10-01), Maniar
Kelly John M.
Le N.
Pham Hai C.
Xerox Corporation
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