Basic knowledge of packaging and printing color matching
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In the packaging printing ink system, the binder is colorless or has a light-colored liquid, and the refractive index and water are very close, so the binder has a certain transparency. When the pigment or filler is added, the light is blocked by the pigment and/or material. Shooting people, resulting in changes in the optical properties of the ink.
When sunlight enters the yellow color ink ink film, it means that it absorbs the blue spectrum in sunlight and emits yellow and green light. When the reflected yellow and green light encounters blue pigment particles, the blue light reflected by them will absorb only the remaining green light. Thus, after a series of reflections and refractions, only the green ink ink film is embodied. Therefore, we call the color mixing of the printing inks a mixture of subtractive differences (collecting the wavelengths required for each other without being reflected by the absorbed spectrum), which is the origin of the mixed color (or complex color).
In China's packaging printing ink industry, due to the use of the principle of subtraction, the use of complementary colors of the three primary colors.
We use a variety of printing ink colors to color a lot of colorful ink colors.
If the color of the packaging and printing design is fully conceived, from the yellow, magenta and green of the three primary colors to the red, green and blue of the three colors, to the purple, bronze, olive green and black of the four complex colors. Can be combined into a new form of expression, as is well known. If you combine different ink color tones (hue), different ink brightness and different ink color chroma combinations, it will also give a beautiful softness. And the feeling of harmony.
Throughout the selection of colors used in packaging printing ink color cards at home and abroad, except for the three primary colors, most of them are composite colors. The blending of complex colors is a color science. The color of the packaged printing is finally determined by our visual inspection. To verify the effect, good, bad and good and bad. Using the color of the packaging and printing to give us the goods we need, decorating the colorful colors, constantly adjusting the work and living environment, will give people a benign stimulation, which is conducive to the improvement of work and quality of life.
There are several colors in the packaging and decoration of the same environment, so the coordination between colors is always the subject of our research. Such as complementary (red and green) colors (two colors plus equal to white), sometimes with a bad feeling will give people a cheesy feeling, well-matched, will give people a strong and eye-catching feeling. Light yellow with reddish brown, will be close to the color between yellow and red, the color is similar to give a harmonious beauty. There is also a combination of dark green and light green, the color is fresh and dazzling. The method of matching the color and the color at the same time gives a bright feeling and protects the eyesight. When the three colors of red, white and blue are the same, they appear on a package. The feelings are: red is warm, white is pure, blue is solemn, reflecting the beauty of a commodity.
Although China has already developed Chinese color chromatography as early as the 1950s, it has been classified into more than 4,000 varieties of 56 enterprises into the current unified P, T, A, W, Z and other five types of 86 printing inks, and successively 29 testing standards were developed. In addition, the printing ink color cards of various packaging and printing ink factories are promoted and distributed in various packaging printing enterprises. As a packaging printing and printing ink designer and worker, it should not be limited to the existing ink color card and hue range, and can often be used. The Munsell color map of the Chinese color system physical sample book and electronic computer color combination to gradually meet the different requirements of users increasingly proposed.

