網点画像における心理物理的特性 (第3報)

多色網点画像とマックスウェルディスクの色差について

抄録

The characteristics of color mixing between multicolor printing and Maxwell disks are examined through the measurement by a color difference meter, and visual-perception evaluation. Especially the effects of additive mixture of colors at the highlight part on the printing are compared with those with Maxwell disks, and the difference between them is investigated by means of H, V and C values attained by visual-perception evaluation. Therefore in measuring by the color difference meter, the differences between the multicolor printing and the Maxwell disks were small with three sorts of primary color ink below 30% at each dot percentage. The difference between them in visual-perception evaluation comes to be about 11.0 on the average in ΔE CIE (L*a*b*). In a comparative study of H, V and C values, the Maxwell disk study shows the inclination that the ΔV with the equal value of H to C within 0.5 and 1.0 from the corresponding value in multicolor printing.