Patent ID: 8705129

Claim:
A printing system comprising: a receiving unit that receives print data for an image to be printed by a printing unit; a generating unit that performs a rasterizing process to the print data received by said receiving unit, and performs a color conversion process by applying a multi-dimensional lookup table for calibration, which multi-dimensional lookup table for calibration is for matching a color of the image to be printed by the printing unit by combining a plurality of base colors to a target color and for keeping the color of the image consistent, to generate image data for the image to be printed by the printing unit, the image data having color information, of which image data the color information has been calibrated; an image data storage unit that stores the image data generated by said generating unit; a calibration unit that applies a first one-dimensional lookup table for calibration, which first one-dimensional lookup table for calibration is for keeping the color of the image to be printed by said printing unit consistent for each base color, to calibrate the color information of the image data generated by said generating unit at a first round of printing the image based on the image data, and applies a second one-dimensional lookup table for calibration, the second one-dimensional lookup table for calibration being generated after said first one-dimensional lookup table for calibration, to calibrate the color information of the image data stored in said image data storage unit at a second round of printing the image based on the image data; and an output unit that outputs the image data of which the color information has been calibrated by said calibration unit.