Color Printing Ink Mixing

The deployment of ink is an important task in the color printing process. How this work is done is directly related to the printing quality of the product. Because of the colorfulness, good lightness, and accurate hue are the basic requirements for color printing products, to achieve this requirement, we must first accurately deploy printing inks. Therefore, the operator must master the color knowledge and the ink transfer process.

1. 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 inks are mixed in equal amounts, 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 gray inks of various shades.

If the three primary color inks are mixed in various proportions, the inter-color or multi-colors of a plurality of different hue can be prepared, but the hue thereof is biased to 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 mixed in different proportions, they can be mixed into a plurality of different hue inter-colors, but their hue tends to a large proportion of the primary color hue. 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.

2. Analysis of the original hue, the use of complementary color theory to correct color cast, improve the effect of ink transfer After receiving a printed version of the manuscript, first of all, the various colors in the manuscript should be carefully appreciated and analyzed, weighed about the proportion of the hue of the ink to be adjusted.

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 process of the process, it is not enough to rely on the three primary colors of ink to deploy an unlimited 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. To achieve the desired ink

Hue. There are many types of ink, but in any case, in addition to the three primary colors, other colors are used to supplement the deficiencies of 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 the color analysis determines the main color and the auxiliary color ink and the ratio, it can be adjusted. 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.

3. 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 color can be obtained; if 4:1 is mixed, apple green 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 similar to black; peach 2 and yellow and blue 1 for each mixed deployment can be obtained brown red; pink 4 and yellow and blue for a deployment, can obtain a reddish brown If the red, yellow, each If points, 2 copies of the blue, can be assigned to olive; peach, yellow 1 each, blue 4 mixed deployment, access to dark green and so on.

4. How to mix ink

When inks are dispensed, according to the hue of the originals, determine which inks should be used for proper deployment. For example, to adjust lake blue ink, it can be adjusted by adding visual experience and experience. White ink is the main color, and peacock blue is the auxiliary color. If you want to deepen something slightly more blue. 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. The main main color is determined well, and the other colors are auxiliary colors. Gradually add a little amount of stirring. Then, using two pieces of paper (the same as printing paper), one of the papers is coated with a little bit of adjusted ink, and the other paper is used to scrape it to the thickness of the printed ink layer, that is, whether it is appropriate to compare with the original. When comparing samples, it is necessary to look at the relatively thin and light parts of the paper-squeegee-like ink layer in order to see accurately, and to master one principle when adjusting the ink, that is, to minimize the use of different colors of ink, that is, to use If you use two types of ink, do not use three inks to adjust, so as not to reduce the gloss of the ink. On the other hand, the color tone of the scraping ink is slightly darker than the original color, so that the printed color sample can be more accurate. After the sample's ink hue is quasi-adjusted, you can adjust the ink in batches according to their respective ink proportions to ensure the quality of the ink transfer 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.

Source: PACK.CN

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