How to color printing ink? In the printing process, many of the color of the sample ink can not be used directly, the need for production enterprises to deploy according to the color of the sample, this process is called the color matching of the ink, and the printing plant is called the ink mixing. The color of printing ink is very important for printing, and it is also a difficult problem.The color of printing ink is very important for printing, and it is also a difficult problem. Usually the use of three kinds of primary color ink in different proportions to reconcile the special color of any color, is to follow the three primary color theory, there are certain rules.The ideal three primary colors have the same coloring force, and can be called black after equal mixing. In fact, there are optically insurmountable defects in the three primary colors, and the color mixed out is brown.Inks are mixed in different proportions to obtain different color complexions, which are biased toward one or two primary color ink mixtures with large proportions. The standard intercolor hue can be obtained by mixing two kinds of primary color inks in equal amount. Two kinds of primary color inks are mixed in different proportions, and the resulting intermediate color is biased to the primary color inks in large quantities.

Printing ink color tips:

(1)The color of the printing ink should be as far as possible using the same type of ink produced by the ink factory, the color saturation of the setting ink (chroma) is higher than the color saturation of the color of the two ink.

(2)If you want to use several shades of ink color, should try to use the color close to the setting ink mainly to adjust the new color ink.

(3)When matching colors, the variety of ink should be reduced as much as possible, because the more varieties of ink matching colors, the higher the color loss ratio, will reduce the brightness and saturation of the color matching ink (chroma), so it can be matched with a hue, do not use two colors of ink.

(4)When deploying light-colored ink, white ink should be the main ink, and a small amount of primary color ink should be added.

(5)When printing plastic packaging materials, in order to obtain light-colored ink and still maintain the viscosity required by the ink, diluent should be used, and try not to use diluent, because the plastic is not easy to absorb the solvent, the diluent is too much, the drying energy needs to be increased, and the bonding force is reduced because the solid content is too small.

(6)Different manufacturers, different models and varieties of ink can not be mixed, otherwise it will affect the luster of the mixed printing, the fastness of the printing, and may even cause the ink gelation.

3.Make proper use of complementary color relationships.According to the principle of complementary color subtractive method, complementary color is added to achromatic. When mixing color inks, complementary colors should be used correctly.Sometimes complementary colors should be avoided, for example, when mixing intercolor inks or diluting primary inks, the mixing of complementary colors should be avoided as much as possible, because the more complementary colors are mixed, the more achromatic components in the ink, the color saturation decreases, and the color darkens. If the color is offset when the ink is deployed, the principle of subtractive complementary color can be used to correct the color. If the ink color is yellow, in order to eliminate yellow, you can add a little violet blue ink in the ink, because yellow and violet blue are complementary colors, and the two colors are mixed into achromatic colors. If you want to adjust the color when adjusting the ink, you can also use complementary colors to solve, such as: when the blue ink is red to change to the yellow tone, as long as the ink adds a small amount of green ink, because the red and green light reflected by the ink is mixed with yellow light. Similarly, if the blue ink is yellow, it needs to be adjusted to red, as long as a small amount of blue and purple ink is added, purple and blue ink reflects red and blue, yellow tone reflects red and green, when the two ink colors are mixed, in addition to the elimination of color, the total color is red blues ink. In daily life, in order to make white whiter, as long as a small amount (1%) of ultramarine is added to white, it can eliminate the yellow tone in white. When the black ink is not black enough, as long as a small amount of light blue ink is added to the black ink, the black ink can become black. In printing, if a small amount of phthalein blue is added to the black ink, the yellow tone in the black ink can be eliminated, and the black ink can be blacker.

Printing ink color requirements:The actual palette technique is mostly governed by experience and intuition. However, there are many types of inks, new varieties of film, printing material processing, uses, etc., so the color technology must depend on the proficiency at the same time, to take care of a very wide range. Strictly speaking, the progress of color mixing technology varies from person to person, but different color mixing principles and basic principles, although the effort is also futile. Therefore, no matter the difficulties and troubles, we must first rely on the basic color accumulation of original experience, coupled with intuition to get the best possible results. In order to improve the accuracy of color matching, color matching personnel and color matching environment have the following requirements: color matching personnel requirements: color matching work seems simple, in fact, not only experience color matching so, even advanced computer color matching finally have to rely on human vision to judge. In a certain condition standard to judge the correct degree of color, color matching personnel need to have color mixing, color basic theory and related knowledge, and to have a certain practical ability, color matching personnel should have a more sensitive ability to distinguish the faint changes in color, and can have this ability at different times and places. From a physiological point of view, color matching personnel to 20-30 years old, healthy and not easy to fatigue is appropriate. Color environment: A simple and common way to compare colors is to use bright indirect sunlight. Open rooms with white walls and north facing Windows are ideal. If the color is matched under the light of indoor artificial lighting, the calibration light source should be set, and the calibration light source color temperature is 5000±200K, which is suitable for observing color photography film. When strict color matching is required, it is best to check and compare the color matching in these two kinds of light.