Aerial color registration

Details Aerial color registration Aerial color registration

1998-12-11

2000-10-31

Le, N.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347246, B41J 2435

Patent

active

061410314

ABSTRACT:
Electrophotographic printers having raster output scanners that correct for polygon facet phasing errors and photoreceptor position errors by aerial scan line adjustments. A photoreceptor position sensor senses the position of the photoreceptor and a facet position sensor senses the position of the polygon facets. A scan line position controller produces a position signal that depends upon the photoreceptor position sensor and the facet position sensor. A piezoelectric-actuated lens mover assembly receives the position signal and moves a pre-polygon lens to adjust the scan line plane to correct for any misregistration. The piezoelectric-actuated lens mover assembly includes a large displacement piezoelectric element and a flexible arm assembly that holds the pre-polygon lens.

REFERENCES:
patent: 4664487 (1987-05-01), Tam
patent: 5208796 (1993-05-01), Wong et al.
patent: 5287125 (1994-02-01), Appel et al.
patent: 5750986 (1998-05-01), Genovese

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