The visual effects of UV printing include plain ordinary color printing, 3d, 4d, 5d and other three-dimensional effects. Among them, normal color printing includes two-color, four-color, six-color, eight-color, eleven-color and so on. The more spot-color UV ink, the more delicate the pattern display.
The factors that affect the visual effect of UV printing are:
1. The physical accuracy of print head
It refers to the number of ink droplets in the nozzle hole. The smaller the value, the higher the accuracy and the finer the printed lines; for example, Toshiba ce4 print head (5PL) <Ricoh gen5 print head (7PL) <Seiko gs508 (12PL) and so on. If you look at it from a long distance outdoors, you can use a large-aperture nozzle, and if you look at it indoors, you can use a small-aperture nozzle.
2. Physical accuracy of UV flatbed printer
It refers to the physical error between the core components such as the screw rod, the trolley, the motor, and the platform. The smaller the value, the better the printing accuracy of the pattern can be guaranteed. When selecting equipment, users should check the brands of parts and understand their process and performance indicators.
3. Patterned pixels
The format of pictures printed by UV flatbed printers generally uses vector graphics, such as PSD, tiff, ai, etc. The pixels should be larger than 300dpi, the higher the effect, the better.
4. Adjustment of color curve
The color curves used in different application scenarios are different. Especially in the advertising industry, the impact of color difference is relatively large. This depends on the curve used by the UV flatbed printer and the adjustment of the technician;
5. Printing software settings
For example, select a few passes to print, the larger the value, the better the effect. Feather opening value, white ink printing ink volume, embossing parameter settings, etc.
6. The characteristics of the material itself
Some 5d and 6d effects on the market require the material itself to be multi-faceted, so that it looks like a 3d effect from multiple angles.
7. Color matching
Under normal circumstances, the standard UV flatbed printer is CMYK + W, which can meet 90% of the demand. However, some export or high-end needs can only be realized by using six, eight, or even eleven colors. The more colors are used, the more layered and delicate the pattern becomes.