Patent ID: 7871145
Filing Date: 2011-01-18
Classification: B41J,G06K

Abstract:
1. A method of printing comprising the steps of: providing a line head including a plurality of jetting modules that are staggered in a page-width direction such that adjacent jetting modules partially overlap each other, each of the plurality of jetting modules including a plurality of nozzles wherein some of the nozzles of adjacent jetting modules overlap each other; applying test pattern print data to the line head for printing a test pattern on a print media using the nozzles of adjacent jetting modules; analyzing the test pattern to detect a stitch error; using the results of the analysis of the test pattern to calculate a set of correction values to be applied to print data subsequently sent to nozzles of the adjacent jetting modules to make a correction for the stitch error; analyzing the print data subsequently sent to the nozzles of the adjacent jetting modules to sense an attribute of an image content of the print data; using the results of the analysis of the image content attribute to calculate a dynamic adjustment that is used to adjust the set of correction values; and using the line head to print corrected print data by applying the set of adjusted correction values to production print data subsequently sent to the jetting modules.