Patent ID: 8253975

Claim:
A color reproduction system with drift correction, comprising: a storage module that stores a set of device independent color signals representative of a calibration target; a scanner that scans a copy of the calibration target printed by a printer to generate scanned image data that corresponds to the copy of the calibration target; a scan conversion module that converts the scanned image data to device independent color signals that represent the printed copy of the calibration target; a calibration module that compares the scanned image data with the stored device independent color signals representative of the calibration target and generates one or more tone response correction functions based on the comparison between the scanned image data and the stored device independent color signals, and creates one or more calibrated halftones for implementation on the printer based on the generated tone response correction functions, wherein the one or more calibrated halftones are adapted to convert image data to binary print data readable by the printer; a correction computation module that generates a set of color shift correction signals by comparing the stored device independent color signals representative of the calibration target with the device independent color signals representative of the printed copy of the calibration target; a tone response correction function generating module that generates the tone response correction function based on the set of color shift correction signals; and a linear response halftone calibration module that creates the one or more calibrated halftones by adjusting one or more stored halftones based on the baseline tone response correction function.