Patent ID: 7593132
Filing Date: 2009-09-22
Classification: B41J,G02B,G06K

Abstract:
1. A method for calibrating the printing of a lenticular image with respect to the lenticules of a lenticular sheet in a system including an ink jet printer, a sensing device, and a processing unit, the method comprising the steps of: aligning a lenticular sheet in the ink jet printer such that the lenticules are perpendicular to a main printing direction of the ink jet printer; using the ink jet printer to print a test pattern including a plurality of patches on the lenticular sheet, wherein the patches are printed on a surface opposite the lenticules, each patch includes a series of line segments extending in the same direction as the lenticules, and the pattern of the line segments within a patch is varied in a known manner from patch to patch; sensing the test pattern through the lenticular sheet with the sensing device and producing sensed data for each of the patches; analyzing the sensed data in the processing unit to determine which patch corresponds to sensed data that has the fewest light and dark bands; calculating a calibration factor based upon the analysis; and using the calibration factor to subsequently print a lenticular image, wherein the lenticular image is subsequently printed on the same lenticular sheet having the test pattern and wherein the calibration factor is used to calculate an accumulated error and pixels of the lenticular image are dropped when the accumulated error is greater than a specified amount.