The principle of UV printing, ultraviolet light curing, and UV flatbed printer is actually the principle of inkjet. The uv ink is directly sprayed on the flat material through the nozzle, cured by the LED light, and dried immediately, fast and convenient, and can also print the uneven three-dimensional relief effect. UV ink is a hard ink, which can control the strength of the relief effect, but the weak solvent ink cannot print the bump. In general, there are three main principles, the first is the printing principle, the second is the curing principle, and the third is the positioning 2 principle. The three principles of UV printers are introduced below.
Printing principle: It means that the uv printer adopts piezoelectric inkjet printing technology, which is different from the surface of different plane materials. It relies on the voltage inside the nozzle to spray the ink of the spray hole onto the surface of the plane material. The nozzle is precisely controlled by hundreds of spraying software control programs and belongs to the key technology of uv printers. At present, uv printer companies are using imported nozzles, and domestic technology has not yet been developed.
Curing principle: refers to the principle of the curing of uv printer ink. The ultraviolet light emitted by the LED lamp and the photocoagulation reaction in the ink realize the drying of the ink, which can be dried immediately, which not only saves the cost of equipment and labor, but also improves the productivity, which is completely different from the previous printing equipment that needs to be baked.
Positioning principle: It refers to the competitive control device of uv printers, printing patterns on different material volumes, heights and shapes. The x-axis positioning mainly relies on the raster decoder transmission equipment for horizontal printing of ancient rivers. On the y-axis, it mainly relies on the drive of the servo motor, the length and height positioning of the printing material, and the rise of the machine head.