Aug. 28, 2021
Since you do not have a deep understanding of UV printers, you do not know the collocation of CMYK's four primary colors of UV printers, especially if you are familiar with traditional printing methods such as silk printing and offset printing. You will also raise the question of why the display screen has three primary colors and why UV inks are four primary colors.
Theoretically speaking, UV printers only need three primary colors, namely cyan (C), magenta (M), and yellow (Y) for color printing, which can be combined into the largest color gamut, just like the RGB primary colors of the display. However, in the production process of UV ink, due to its composition, the purity of the color will be limited, and the three primary colors of CMY ink can only produce a dark brown close to pure black. So you need to add black (K) when printing to print pure black.
Therefore, UV printers that use UV ink as printing consumables must add a black color on the basis of the theory of three primary colors. This is the reason why UV printing uses the CMYK model. In the UV printing industry, it is also called four-color. In addition, the six colors often heard in the market are the addition of Lc and Lm to the CMYK model. The addition of these two light-colored UV inks is to meet those scenes that have higher requirements for the color of the printed pattern, such as advertising display materials. . The six-color model can make the printed patterns fuller, more natural in transition, and more layered.
In addition, with the market's increasing requirements for the speed and printing effect of UV printers, some manufacturers have also introduced more color configurations. Get some spot colors in addition to the six colors, but these are also inseparable. The principle is the same as the four-color and six-color models.