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What should be noted when mixing light-colored inks? What are the requirements for ink color matching for fixed inks?
The color matching of printing inks should preferably use the same model of standardized ink produced by the ink factory with the same hue. The color saturation (i.e., chroma) of the standardized ink should be higher than that of the ink mixed from two different color inks.
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When mixing light-colored inks, white ink should be the main component, with a small amount of original color ink added for blending. If several hues of ink are to be used for color mixing, the composite machine should try to use similar colored standard inks as the main component for color matching.
When printing with plastic packaging materials, to obtain light-colored inks while maintaining the viscosity of the ink, a diluent can be used. The diluent actually does not add pigment but maintains other components in the ink, adjusting the viscosity to the desired level. Using a diluent to mix light-colored inks will lighten the ink color while also reducing its viscosity. Since the binder content decreases in light-colored inks mixed with a diluent, the ink's adhesion and film thickness will also decrease. When mixing colors, the variety of inks should be minimized because the more types of inks used, the higher the proportion of color loss, leading to reduced brightness, gloss, and saturation of the mixed ink, which will lose its vividness. Therefore, if two hues of ink can be used, there is no need to use three hues for mixing. Inks from different manufacturers, different models from the same manufacturer, or different models from different manufacturers should not be mixed to avoid issues such as gelation, sedimentation, and discoloration.
The color mixing of printing inks should preferably use standard inks of the same model produced by the ink manufacturer with the same hue. The color saturation (i.e., chroma) of standard inks should be higher than that of inks mixed from two different colors.
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