Compensation of magnification mismatch in single pass color prin

Details Compensation of magnification mismatch in single pass color prin Compensation of magnification mismatch in single pass color prin

1992-12-01

1993-12-21

Fuller, Benjamin R.

Recorders

Electric recording

Electrochemical

355210, 355326, G03G 1501

Patent

active

052724921

ABSTRACT:
A single pass color printer provides registration by controlling the velocity of the photoreceptor as a plurality of color separation latent images are superimposed on an area of the photoreceptor. The velocity of the photoreceptor is controlled by averaged error values v.sub.ij. The averaged error values v.sub.ij are determined periodically for the same photoreceptor or when an old photoreceptor is replaced with a new photoreceptor or when a user depresses a button in a display to recalibrate the averaged error values v.sub.ij after noticing degradation of point quality. The averaged error values are based upon at least one of time deviations, average transit times and average velocities of areas of the photoreceptor on which the latent images are formed. The calibration of the velocity variations is equivalent to a calibration of the belt thickness uniformity. Further, the method of determining or calibrating the averaged error values v.sub.ij can be used to verify that the method was properly done.

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