Patent ID: 7069164
Filing Date: 2006-06-27
Classification: G01J,G03G,H04N

Abstract:
1. A method for calibrating a marking system of at least one or more printers to maintain color consistency with a reference printers comprising: (a) obtaining a printed reference on the reference printer, the printed reference having at least one test patch; (b) obtaining at least one reflectance value from said test patch in the printed reference by obtaining reflectance values from one or more first test patches each aligned in a first direction and obtaining reflectance values from one or more second test patches each aligned in a second direction that crosses the first direction, the second test patches having at least one patch of CMY gray extending in the second direction; (c) creating sensor reference values for each printer of the marking system by placing the printed reference in the input tray of each printer of the marking system transporting the printed reference through the paper path of each printer of the marking system and obtaining at least one reflectance value from the printed reference using the sensors of each printer of the marking system; and (d) calibrating the control system of each printer of the marking system using the obtained reflectance values.