For the production of UV offset printing, after understanding the necessary configuration of the offset press, let us look at the requirements for printing materials. 1. UV ink UV inks are light-curable absorbent inks, as many cards require laminating lamination and their own functioning is particularly important. There are two points in the junction: First, it needs high temperature resistance and high pressure resistance. It does not change color and does not fade under the high temperature and high pressure of the laminator. Second, the bonding force between the plastic film and the plastic film must be large, and the minimum dimension must reach 6N. In addition, the selection of UV ink for card printing is also a hub, in addition to ensuring the quality of the ink itself, it must also be compatible with the printer UV lamp wavelength. Because many manufacturers use color inkjet drafts as a manuscript for printing, it is recommended to select the yellow and magenta colors of the standard hue when choosing an ink. Blue ink. In addition, when spot color inks are formulated, inks with low viscosity and good activity should be selected as much as possible, and Ake's ink in Europe is preferred. 2. Special printing plate UV offset printing plate wear-resistant, resistant to printing, when the machine stops halfway without protective glue, the old version can be used again, and is very suitable for the transfer of UV ink, high reduction rate when printing, can basically reach 2% of the outlets Without losing, 98% of the outlets can be distinguished. At present, Japan's Fuji UV version is of good quality. Considering the cost of printing, for small batches of short-lived editions, the text version can be properly used as a normal edition. However, the edition film is extremely fragile and should pay more attention to printing. 3. Blanket and bag lining In order to ensure the best transfer of UV ink and dot reducibility, it is best to use air-cushion blanket, because of its good acid resistance, oil resistance. Hydrophobicity and good ink transfer function can ensure that the dot deformation during the printing process is minimal, the printing picture is clear, the reproducibility of the high-profile department is good, and the printing plate wear is small. Eraser roller lining is better for neutral and hard, because the surface of PVC and other sheets is rough, which easily leads to high printing dot gain, and the use of a neutral hard liner can make the dots clear, smooth and reproducible. The geometric shape of the graphic changes little, and the width increment of the graphic and printed sheets is relatively small. 4. PVC and other sheets Sheets of PVC and other materials have a light surface and a matt surface. The light surface is smoother and the matt surface is rougher. Selecting the printing surface is important, and many print quality problems can be avoided. Generally, the matt side of the sheet such as PVC is used as the printing surface to ensure that the ink of the plain ink is not napped or dotted, and the adhesion between the ink and the material is strong, and the ink is plump and does not expose white spots. In addition, the printing pressure is appropriately increased by 0.02 to 0.05 mm from the standard pressure. 5. Auxiliary materials UV offset printing used car wash, blanket cleaning agent. Cleaning solution, etc. are best to use special products, which for UV ink roller. The life and function of UV blankets and UV plates are particularly important. Although the cost will be higher, it can be used flexibly according to the actual situation. Ensure that the ink roller is cleaned once a week; use a special revert agent to clean the blanket when it is stopped, so that it can not only ensure the elasticity of the blanket, but also ensure the color balance and avoid chromatic aberration when restarting.