Patent ID: 7933054

Claim:
An image processing system, comprising: a color image input unit configured to input color image data; a color image identification information generating unit configured to generate color image data identification information that identifies the color image data input by the color image input unit; an image data storing unit configured to store the color image data identification information in association with the color image data; a monochrome image generating unit configured to generate monochrome image data based on the color image data; a monochrome image output unit configured to generate composite image data by adding the color image data identification information to the monochrome image data, and to print the composite image data on a first recording medium; an image reading unit configured to read the composite image data from the first recording medium and input the composite image data; an identification information extracting unit configured to extract the color image data identification information from the composite image data read by the image reading unit; and a color image output unit configured to read from the image data storing unit the color image data identified by the color image data identification information extracted by the identification information extracting unit and output the color image data in a visible format, wherein the color image data identification information is used to acquire the color image data stored in the image data storing unit.