Patent ID: 6219155
Filing Date: 2001-04-17
Classification: G03G,G06F,G06K,H04N

Abstract:
A method for correcting the operation of a marking engine in a color printer when reproducing a contone image, the marking engine having the capability of changing the toner density parameters thereof to affect the contone reproduction operation of the marking engine for a given input RIPed image, comprising the steps of:generating a plurality of discrete contone images in a test pattern, each correlating bit values of a contone image to different values of the toner density parameters of the marking engines;running the test pattern through the marking engines to provide an output;visually selecting one of the discrete contone images on the output of the marking engine in accordance with predetermined criteria; andchanging the toner density parameters of the marking engine to the value associated with the selected one of the discrete contone images on the output.