Study on the Color Evaluation of the Four-color Offset Printing Inks Based on ISO 2846

This topic is to evaluate four colors of the domestic offset printing inks based on the ISO 2846 international standard for printing by the method of experiment,in order to set the color difference curve and spectral reflection curve,which will provide basic data on the color management and standardization for the late domestic offset printing ink. Experimental results show that compared with ISO reference ink,Yellow and Black of the three domestic representative inks have reached the standard of ISO,as the same to Magenta of Tianjin Tokyo NEW TGS and HangHua EXCEL series,however the spectral emissivity of Cyan of all inks is higher than that of ISO reference ink in blue light wavelength range,which make the Cyan inks slant blue,closer to the ideal values of Cyan color chromaticity,and better to the ink saturation. So according to the experimental data,the standardization of printing ink will be established more perfect by adjusting the chroma value of the cyan ink in formulating China ink color standard.