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Proceedings Paper

Strategy for tandem color registration
Author(s): Vittorio Castelli; Jan deJong; Lloyd Williams
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Paper Abstract

This writing describes a strategy for color registration and motion control for tandem xerography. The strategy is based on an intelligent closed-loop controller which automatically calibrates the machine against repeatable errors and compensates for long term errors due to drift. Registration errors are measured by means of a dedicated sensor. Repeatable steady and periodic, errors are characterized at long intervals and compensated by feedforward techniques. Long term drifting errors are periodically detected and corrected. Feedback control is used to counteract unexpected and uncalibrated disturbances. Measurements taken on an experimental breadboard show that registration of four xerographic engines can be maintained to within 45 microns, and that color and gray banding can be eliminated. This limit of registration accuracy is mostly due to stretch of the intermediate belt under the action of image dependent transfer forces.

Paper Details

Date Published: 29 March 1996
PDF: 9 pages
Proc. SPIE 2658, Color Imaging: Device-Independent Color, Color Hard Copy, and Graphic Arts, (29 March 1996); doi: 10.1117/12.236954
Show Author Affiliations
Vittorio Castelli, Xerox Corp. (United States)
Jan deJong, Xerox Corp. (United States)
Lloyd Williams, Xerox Corp. (United States)


Published in SPIE Proceedings Vol. 2658:
Color Imaging: Device-Independent Color, Color Hard Copy, and Graphic Arts
Jan Bares, Editor(s)

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