Patent ID: 7210758
Filing Date: 2007-05-01
Classification: B41J

Abstract:
1. A method for calibration of paper feed in an ink jet printing system to remove overfeed bands and underfeed bands from an image, wherein the ink jet printing system comprises rollers for vertical feed, wherein the method comprises the steps of: a. feeding print media into the ink jet printing system; b. forming a color density test target adapted to shift from light to dark to light in order to identify a maximum optical density region, wherein the color density test target is formed by simultaneously c. selecting the paper feed value from the color density test target that corresponds to a maximum optical density region on the color density test target; and d. inputting the paper feed value that corresponds to the maximum optical density region into the ink jet printing system to calibrate the printing system in order to minimize the presence of overfeed bands and underfeed bands while printing.