Patent ID: 8649054
Filing Date: 2014-02-11
Classification: B41J,H04N

Abstract:
1. A computer-implemented method for performing color registration on template media having template markings thereon, wherein the method is implemented in a computer system comprising one or more processors configured to execute one or more computer program modules, the method comprising: sensing the template media using a sensor positioned along a process path of a web to obtain first image data; printing a test pattern on the template media; sensing the template media along with the test pattern printed thereon using the sensor to obtain second image data; determining an output image data of the test pattern from the first image data, the second image data, and an estimated image data of the template media with the test pattern printed thereon, wherein the estimated image data is a function of light scatter from the test pattern and light absorption by the test pattern; determining at least one of a process direction misregistration and a cross-process direction misregistration from the output image data; and adjusting at least one of a cross-process position and a process position of printheads based on the process direction misregistration and cross-process direction misregistration to provide adjusted color registration on subsequent template media, wherein the light scatter from the test pattern is determined by performing an off-line characterization of light absorption and light scattering of each ink or toner of the test pattern using a light scatter model.