METHOD FOR CORRECTING DOT PERCENT IN MULTICOLOR OVERLAP COLOR REPRODUCTION PROCESSING AND METHOD FOR PREDICTING REPRODUCED COLOR

摘要

PURPOSE:To correct a dot percent after considering a dot gain in multicolor overlap printing of an area modification type. CONSTITUTION:A color to be corrected is defined as a first color and at least one color to be superposed on the first color as a second color. The dot percent is corrected by (1) setting the set dot percent a of the first color, (2) determining the effective dot percent as at the time of the single color of the first color in accordance with MurrayDavies equation, (3) determining a correction factor df from the change state of the dot gain at the time of superposing the second color on the first color of the specified set dot percent over the set dot percent of 0 to 100%, (4) correcting the difference aMD-as between the effective dot percent aMD at the time of the single color of the first color and the set dot percent as of the first color by the correction factor df to determine the correction value and (5) adding this correction value to the set dot percent as.