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Color Rendering Mechanism Of Inkjet Prints

2018-09-11

Color Rendering Mechanism Of Inkjet Prints

The application of various printers today has brought convenience to people's lives and work. When we look at inkjet prints of color graphics, in addition to print quality and color reproduction, we may not have thought about the mechanism of color on print samples. Why are the inks needed for printing green, yellow, black, and not red, green and blue? Here we discuss the color rendering mechanism of inkjet prints.

Ideal three primary colors

The three basic colors used for mixing to produce various colors are called primary colors. The color light additive color mixing uses red, green, and blue as the additive primary colors; the color material subtractive color mixing uses cyan, magenta, and yellow as the subtractive primary colors. The subtractive primary colors are complementary to the additive primary colors, which are called reducing primary colors, subtracting the primary colors and subtracting the blue primary colors.

Each color of the ideal additive color primaries occupies one-third of the visible spectrum, consisting of short-wave (blue), medium-wave (green), and long-wave (red) monochromatic light.

Each of the ideal subtractive primary colors absorbs one-third of the visible spectrum and transmits two-thirds of the visible spectrum to control the red, green, and blue absorption.

Additive color mixing

The additive color mixing uses red, green, and blue as the additive primary colors, and the new color light is generated by the superposition and mixing of the three primary colors of red, green, and blue light. Among them: red + green = yellow; red + blue = light; green + blue = blue; red + green + blue = white;

Color reduction and color mixing

The subtractive color mixing uses cyan, magenta, and yellow as subtractive primary colors, and the cyan, magenta, and yellow primary color materials are overlaid and mixed to generate a new color. That is, subtracting one kind of monochromatic light from the compound white light gives another color effect. Among them: Cyanine magenta = blue-purple; barley yellow = green; magenta crimson yellow = red; cyan magenta crimson yellow = black; the result of subtractive color mixing is that the energy is continuously reduced and the mixed color is darkened.
Jet print color formation

The color of the print product is formed by two processes of subtractive color and additive color. The ink is printed on the paper in the form of small droplets that absorb the illumination light to form a specific color. Therefore, light reflected by different proportions of small ink dots enters our eyes, thus forming a rich color.

The ink is printed on the paper, and the illumination light is absorbed, and a specific color is formed by using the subtractive color mixing rule. Eight different combinations of colors are formed on the paper: cyan, magenta, yellow, red, green, blue, white, and black.

The 8 colors of ink dots formed by the ink use a color-mixing rule to mix various colors in our eyes. Therefore, we can perceive the various colors described in the print graphic.

Summary: The reason why ink is used in inkjet printing process is to use green, yellow, black, and these four basic printing colors, mainly through the superposition of various colors of ink in the printing process, resulting in the law of subtractive color mixing; The visual observation of the eye, and showing the law of additive color mixing, eventually imaging in the human eye, and the perception of the color of print graphics. Therefore, in the coloring process, the coloring material is subtractive color mixing, and the coloring light is additive color mixing, and the two complement each other, and finally get the visual enjoyment of the color printing sample.


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