Camparision and Analysis about the Weighted-Ordinate Colorimetric Method and the Direct Colorimetric Method of Halftone Dot Printing Colors

망점색인쇄물의 분광측색법과 자극치직독측색법에 대한 비교분석

Test colors are halftone dot printed at the rate of 10% halftone dot area by process inksblack, cyan, magenta and yellow ink. Reproduced colors are measured by the weighted-ordinate colorimetric method and the direct colorimetric method. The weighted-ordinate colorimetric method compare favorably with the direct colorimetric method, because the former has good regular changes of tristimuIus values, chromacity coordinates, excitation purities, value functions and has smaller errors of dominant and complementary wavelengths than the latter. All test colors classify with the Munsell renotation.tation.