Patent ID: 6141120
Filing Date: 2000-10-31
Classification: H04N

Abstract:
In a printing system, a method of calibrating a printer having a plurality of printer colorants using a scanner adapted to sense a plurality of color components, comprising the steps of:storing a color characterization profile for transforming input colorant data to measurements of the intensity of each printer colorant;storing a scanner profile providing, independently for each scanner color component, a mapping of scanner data to measurements of the intensity of each printer colorant;printing stored data to generate a printed image;scanning the printed image to generate a scanned image;converting the scanned image to measurements of the intensity of each printer colorant using the scanner profile;comparing the stored data and the converted scanned image to generate a printer profile relating, independently for each printer colorant printed measurements of the intensity of each printer colorant to input colorant data; andcombining the color characterization profile and the printer profile to generate calibration data for calibrating each printer colorant.