Color image reading apparatus having color correction coefficients

Claim 1

A color image data processing system comprising: an image data processing apparatus for externally receiving a color image data and for processing the received color image data in a predetermined sequence; a color image reading apparatus, coupled to said image data processing apparatus and for supplying the read-in color image to the image data processing apparatus, the color image reading apparatus including: photoelectric converting means for receiving a color manuscript image and for converting the received color manuscript image into electrical image data; and memory means for memorizing a plurality of color correction coefficients, which are used to enable said image data processing apparatus to perform proper color correction, and for selecting one of the plurality of color correction coefficients according to the signal from said image data processing apparatus; receiving means for receiving an image signal of a reference image; comparing means for comparing the received image signal of a reference image with an ideal value data of the reference image to determine a color deflection degree of said color image reading apparatus; and means for calculating a new color correction coefficient according to the color deflection degree by using a multiple integral and for supplying the calculation results to said memory means of said color image reading apparatus, which memorizes the new color correction coefficient.