Color knowledge and ink adjustment technology to be mastered in ink preparation

Mixing ink is an important task in the color printing process. How well this work is done is directly related to the printing quality of the product. Because bright colors, good brightness, and accurate hue are the basic requirements of color printing products, to achieve this requirement, the printing ink must be accurately prepared. Therefore, the operator should master good color knowledge and ink adjustment process.

Mixing ink is an important task in the color printing process. How well this work is done is directly related to the printing quality of the product. Because bright colors, good brightness, and accurate hue are the basic requirements of color printing products, to achieve this requirement, the printing ink must be accurately prepared. Therefore, the operator should master good color knowledge and ink adjustment process.

1. Master the changing rules of the three primary colors in order to achieve accurate ink deployment

We know that any color can be mixed with different proportions of the three primary colors, and the hue of the ink changes precisely by using this rule. For example, the three primary colors of ink can be mixed in the same amount and become black (approximately). The three primary colors of ink are mixed in equal amounts and white inks of different proportions are added to form light gray inks of various shades.

If the three primary color inks are mixed in various proportions, it can be blended into a variety of intermediate colors or multiple colors, but the hue is biased to the primary color hue with a large proportion. If the two primary inks are mixed in equal amounts, they can become standard intermediate colors; after the two primary inks are mixed and mixed in different proportions, they can be formulated into a variety of intermediate colors, but their hue tends to be a large proportion of primary colors. In addition, in any color ink, the hue appears brighter after adding white ink. Conversely, after adding black ink, the hue becomes darker. The above-mentioned blending of primary colors into various colors is based on the subtractive color theory of the three primary colors.

2. Analyze the hue of the original

Use complementary color theory to correct color cast and improve the effect of ink adjustment. After receiving the printed color manuscript, first of all, we should carefully appreciate and analyze the various colors in the manuscript, and consider the proportion of ink hue to be adjusted. Analyzing the color draft is to master a basic principle, that is, the three primary colors are the basic colors of any ink color. In general, applying the change rule of the three primary colors, in addition to the gold and silver colors, any complex colors can be prepared. However, in the process of process practice, it is not enough to rely on the three primary colors to prepare countless ink colors. Because, in fact, the pigments used to make inks are not very standard, and even the inks produced by each batch inevitably have a certain degree of difference in color. Therefore, in actual work, inks such as medium blue, dark blue, light blue, light blue, medium yellow, dark yellow, light yellow, gold red, orange, deep red, light red, black, green, etc. should be added in appropriate amounts. In order to achieve the required ink hue. There are many types of ink, but no matter what, except for the three primary colors, other colors are used to supplement the deficiencies of the three primary colors. Any complex color always changes within the range of the three primary colors. As long as you master this principle, ink adjustment will not be a problem. After the color analysis determines the primary and secondary color inks and proportions, it can be deployed. However, if there is a deviation in the hue prepared, the hue can be corrected using the complementary color theory. For example, if the hue of a certain hue is green, a small amount of red ink can be added to correct it. On the contrary, if the red taste is too heavy, blue ink can be added to correct it.

3. Blending of inter-color and multi-color

The so-called inter-color is made by mixing two primary colors of ink. For example, the color of red and yellow is orange; yellow and blue can get green; red and blue can become purple. With two matching, many kinds of intermediate colors can be prepared. That is: the primary colors pink and yellow are mixed in 1: 1 to get a big red phase; if they are mixed in 1: 3 they can get a deep yellow; if they are mixed in 3: 1 they can get a golden red phase. If the primary colors yellow and blue are mixed in equal amounts, you can get green; if you mix with 3: 1, you can get emerald green; if you mix with 4: 1, you get apple green; if you mix with 1: 3, you get dark green. If the primary colors pink and blue are mixed and mixed in a ratio of 1: 3, a dark blue purple can be obtained; if they are mixed in a ratio of 3: 1, an approximate green lotus color can be obtained. The compound color is derived from the blending of three primary inks. If they are mixed in different proportions, you can get many kinds of compound colors. Such as: the primary colors of pink, yellow and blue are mixed in equal amounts to obtain approximate black; pink 2 parts are mixed with 1 yellow and blue to obtain brown red; 4 parts pink are mixed with 1 yellow and blue to obtain red brown ; If there are 1 part each of pink and yellow, and 2 parts of blue, it can be adjusted to olive; 1 part of pink and yellow, 4 parts of blue can be mixed to obtain dark green and so on.

4. Operation method of mixing ink colors

When blending inks, it is necessary to determine which kinds of inks should be used for blending according to the hue analyzed by the original. For example, to adjust the blue ink of the lake, it can be adjusted based on visual observation and practical experience. Among them, white ink is the main color, and peacock blue is the auxiliary color. If you want to get deeper, you can slightly add royal blue. If you want to adjust the olive yellow-green ink color, you can be sure to mainly white ink, add light yellow and peacock blue and slightly pink. As long as the main color is determined, the other colors are auxiliary colors, which should be gradually added in small amounts and stirred evenly. Then, use one of the two pieces of paper (the same as the printing paper) to apply one point of adjusted ink, and use another piece of paper to scrape it to the thickness of the printed ink layer, that is, compare it with the original to see if it is appropriate. When comparing samples, it is necessary to scrape the relatively thin and light parts of the ink layer on the paper surface to be more accurate. When adjusting the ink, you should also master a principle, that is, use inks of different colors as little as possible, that is, if you can use two inks, you should not use three inks to adjust, so as not to reduce the gloss of the ink. On the other hand, the scratch tone of the ink is slightly darker than the original color, so that the printed color sample can be more accurate. After the ink tone of the sample is accurate, you can adjust the ink in batches according to their respective proportions of ink to ensure the quality of ink adjustment and improve work efficiency.

In summary, as long as we master the rules of the changes of the three primary colors, apply good color knowledge, practice carefully and analyze and summarize, we will be able to quickly and accurately deploy excellent colors with accurate phases, bright colors, bright colors and good printability. Ink lays a solid foundation for improving product quality.

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