What does the improvement of the fineness of the UV printer depend on?

Many friends who are going to buy UV printers basically focus on brand, price, after-sales, machine quality, printing speed and fineness. Among them, speed and fineness are the most direct printing effects of UV printers. Of course, for industrial applications, the manufacturing quality of the machine itself, that is, stability, is also very important.

Many UV printer manufacturers are also conducting tireless research on how to further improve the fineness of inkjet printing. UV inkjet printing is a subtractive process for the three primary colors of cyan (C) magenta (M) and yellow (Y). CMY These three inks can mix the most colors and have the widest color gamut. The three primary colors cannot be mixed to produce true black, and a special black (K) is required, so the four colors that UV printers often say are CMYK.
The UV printer controls the inkjet action of the nozzles of different color nozzles, so that the ink of each color forms one by one ink dots on the printing medium. This imaging principle is called halftone image, that is, the ink presents only a single color. , and use different ink dot sizes, distribution densities, etc. to form full-color images.

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The size of the ink dot plays a decisive role in the fineness of the UV printer. From the perspective of the development trend of inkjet print heads, the size of the nozzle is getting smaller, the number of picoliters of the smallest ink droplet is decreasing, and the resolution is increasing. Now on the market such as Ricoh, Epson, Konica and other mainstream print heads, the smallest ink droplets are several picoliters.

In addition, adding light-colored inks of the same color makes it possible to use more light-colored inks to replace heavy-colored inks when low-density output is required, so that the color transition of the image is more natural, and the colors are fuller and more layered. Therefore, friends who have high requirements for UV printers can consider using light cyan (Lc) and light magenta (Lm) inks, which are also the six colors we often say, and even a third-order black ink.

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Finally, spot colors are also a solution to further improve the fineness of UV printers. The color of other colors presented by the mixture of the three primary colors is still not as bright as the direct use of this color ink, so complementary color inks such as green, blue, orange, purple and other spot color inks have appeared in the market.


Post time: Jun-22-2022