Patent ID: 7259892

Claim:
A printer correcting apparatus connected to a printer capable of color printing, comprising: input means for inputting color printing information classified by density relating to each color component, which is used in color printing, output by the printer; first correcting means for executing calibration of said input means; and second correcting means for executing calibration of the printer utilizing the color printing information that has been input using said input means, which has been corrected, wherein said first correcting means includes: first storage means for storing a reference input-level luminance-to-density conversion table that indicates the relationship between input level and luminance; first generating means for generating a target input-level luminance-to-density conversion table, which indicates the relationship between the input level and luminance of the input means, based upon a correction chart specific to said input means; second generating means for generating a luminance correspondence table specific to said input means by combining an inverse function of the generated target input-level luminance-to-density conversion table and the reference input-level luminance-to-density conversion table; second storage means for storing at least one of reference scanner luminance-to-density conversion tables that indicate the relationship between luminance and density; and third generating means for generating a luminance-to-density conversion table specific to said input means by combining the luminance correspondence table specific to said input means and the reference luminance-to-density conversion table.