Grasp the law of the three primary colors and accurately adjust the ink distribution

The deployment of ink is an important part of the color printing process. How this work is done is directly related to the quality of the product. Because the color is bright, the brightness is good, and the hue is accurate is the basic requirement of the color printing product. To achieve this requirement, we must first accurately dispense printing inks. Therefore, the operator must master the color knowledge and the ink transfer process.

Grasp the law of three primary colors in order to achieve accurate ink deployment

We know that any color can be blended using different proportions of the three primary colors. The hue of the ink changes, it is to use this rule. If the three primary color inks are mixed and mixed, they can become black (approximate). Tricolor inks are mixed in the same amount and added with different proportions of white ink to be formulated into light grey inks of various shades.

If the three primary color inks are mixed in various proportions, they can be blended into a variety of different hue inter-color or multi-color, but their hue is biased towards a large proportion of the primary color hue. If the two primary inks are mixed in the same amount, they can become standard inter-colors; after the two primary inks are mixed and formulated in different proportions, the inter-colors of a plurality of different hues can be formulated, but the hues tend to be large in proportion to the primary colors. In addition, in any color ink, the hue becomes brighter after adding the white ink. Conversely, after adding black ink, the hue becomes dark. The above-mentioned use of primary color inks to prepare a variety of colors is based on the theory of subtractive color of three primary colors.

Analyze the hue of the original, correct the color cast with complementary color theory, and improve the effect of ink transfer

When receiving the printed manuscript, first of all, the various colors in the manuscript should be carefully appreciated and analyzed, and the proportions of the hue of the ink to be adjusted should be weighed. The analysis of a color draft is to grasp a basic principle that the three primary colors are the basic color of any ink color. In general, applying the changing rules of three primary colors, in addition to gold and silver colors, any complex color can be deployed. However, in the course of process practice, it is not enough to rely on the three primary colors of ink to deploy an infinite number of ink colors. Because, in fact, the pigments used to make inks are not very standard, and even each batch of ink produced will inevitably have a certain degree of difference in color. Therefore, the appropriate amount of ink such as medium blue, dark blue, light blue, light blue, medium yellow, dark yellow, light yellow, gold red, orange, dark red, light red, black, and green should be used in practical work. In order to achieve the desired ink hue. There are many kinds of ink, but in any case, in addition to the three primary colors, other colors are used to supplement the three primary colors. Any complex color is always changed within the scope of the three primary colors. As long as this principle is mastered, the transfer of ink will not be a problem. When color analysis determines the primary and secondary color inks and their proportions, they can be blended. However, if there is a deviation in the hue allocated, the complementary color theory can be used to correct the hue. For example, a hue with a green hue can be corrected by adding a small amount of red ink. On the contrary, the red taste is too heavy to be corrected by adding blue ink.

Color and polychromatic blending

The so-called color, which is mixed by the two primary color inks formulated. For example, the hue of red and yellow is orange; yellow and blue can be green; red and blue can turn purple. Two match, you can deploy a variety of colors. That is, the primary colors of pink and yellow are mixed with 1:1 to obtain a large red phase; if they are mixed with 1:3, dark yellow can be obtained; if 3:1 is mixed, a golden red phase can be obtained. If the yellow and blue colors are mixed, the green color can be obtained; if 3:1 is mixed, green can be obtained; if 4:1 is mixed, green apple can be obtained; if it is mixed with 1:3, dark green can be obtained. If the primary colors of pink and blue are mixed in a 1:3 ratio, a dark blue purple color can be obtained; if the color is mixed with 3:1, an approximate color of pink can be obtained. The complex color is derived from the mixing of three primary inks. If they are mixed in different proportions, many kinds of complex colors can be obtained. Such as the original color pink, yellow and blue equal deployment, can be approximated black; peach red 2 and yellow and blue, respectively, 1 to prepare a brown red red; pink 4 and yellow and blue each 1 deployment, obtain a reddish brown; If the red, yellow, 1 and blue, 2 can be adjusted with olive; pink, yellow 1 each, blue 4 mixed deployment, you can get dark green and so on.

How to mix ink

When inks are dispensed, according to the hue of the originals, determine which inks should be used for deployment. For example, to adjust lake blue ink, it can be adjusted by adding visual experience and experience. Among them, white ink is the main color, and peacock blue is the auxiliary color, which should be added slightly. If you want to adjust the olive yellow-green ink, you can determine the main white ink, add light yellow and peacock blue and slightly pink can be. As long as the main color is determined, the other colors are auxiliary colors, which should be added gradually and gradually and evenly. Then, use a proofing paper to apply a little of the adjusted ink, scrape the thickness of the printed ink layer on the substrate (such as pre-coated tinplate), that is, compare with the original to see if it is appropriate. When comparing the samples, it is necessary to look at the relatively thin and light parts of the tinted ink layer of tinplate to see accurately. To adjust the ink, one must also master a principle that minimizes the use of different colors of ink, that is, can be tuned with two inks, do not use three inks to adjust, so as not to reduce the gloss of the ink. On the other hand, the scraping ink tone is slightly darker than the original color. After the sample's ink hue is quasi-precise, you can adjust the ink in batches according to their respective proportions of the ink to ensure the quality of the ink and improve work efficiency.

To sum up, as long as we grasp the changing laws of the three primary colors, apply color knowledge, practice and analysis, we will be able to quickly and accurately deploy excellent colors, bright colors, bright colors and good printability. Ink, lay a solid foundation for improving product quality.