| 摘要 |
<P>PROBLEM TO BE SOLVED: To make it possible to compute highly accurate color differences irrespective of the width of ink keys in every printing machine on a color difference computing system in a multicolor machine plate printing used for color adjustment by color differences based on the printed state printed with a multicolor machine plate printing machine. <P>SOLUTION: On this color difference computing system, in a standard data forming means 23, the standard data of a single total image data are formed through the composition of block copies of every standard ink colors and then the conversion to a standard wavelength color. On the other hand, in a colorimetric data acquiring means 24, the colorimetric data with the predetermined printed length of the standard data is acquired as a single total image data of the standard wavelength color. After that, in a color difference computing means 25, the comparing area of the standard data is made to correspond to the comparing area of the colorimetric data, resulting in computing respective color difference and expressing it numerically and respectively by comparing respective comparing areas with each other. <P>COPYRIGHT: (C)2007,JPO&INPIT |
