There is no small matter in coloring, and 5 details are "fixed!"
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1. Carefully observe the color samples, pay special attention to the substrate to be printed, and select the ink from the rough and smooth reflection degree of the substrate. For example, ink printing on a highly reflective aluminum plate or can, and selecting a highly transparent ink will help to greatly enhance the metallic luster of the ink;
2. When selecting the ink required for coloring, avoid mixing too much ink as much as possible. Try to use inks that are close to standard colors and made from a single pigment. Toner is used too much, and the farther away from the standard color, the worse the brightness. The higher the matte color of the blended color, the more it is impossible to modulate the primary colors by toning. Therefore, when mixing, you can use two kinds of compounding, you don't need three kinds, the less the better.
3, pay special attention to ink tinting strength. If the selected ink concentration is not high enough, the standard color density will not be achieved anyway.
4. When it is necessary to add white and black ink, special attention should be paid to the added component and the accuracy of weighing. In all ink types, the white ink has a strong hiding power. Adding too much will not only dilute the color, but also prevent the substrate from being reflective. However, for printing irregularities such as nylon cloth and cardboard, in order to ensure the appearance of the printed product, it is preferable to print a layer of white as a ground color. Since the black ink has a strong coloring power, it is necessary to add a considerable amount of other color inks to adjust the color to cause waste if it is added too little, so it is necessary to pay special attention.
5. When making light-colored ink, it should be judged from the degree of light transmission of the ink film, how much white ink should be added or ink (dilution agent) should be added for coloring. Solvents (diluents) are never allowed to be used in light colors. Too much solvent addition will not only affect the printing performance, but also destroy the ink structure and cause the pigment to separate from the resin oil. Precipitation occurs or the gloss and brightness of the ink are greatly reduced.