金属移印（Metal pad printing）Pad printing: pad printing is one of the special printing methods. It can print characters, graphics and images on the surface of irregular objects, and now it is becoming an important special printing. For example, the text and pattern on the surface of the mobile phone are printed in this way, as well as the surface printing of many electronic products such as computer keyboard, instrument, instrument and so on, which are finished by pad printing.Printing plateThe use of the printing process printing steel version in the dominant, thick steel plate cup transfer printing machine plate printing machine and 16% 100% the use of about 15mm in thickness; oil cup printing machine and 77% use thin steel plate thickness in the 0.25mm and 0.5mm, both the thin steel plate or thick steel plate, plate making process the same. The substrate used is roughly the same. The steel plate must have a fine structure, and the surface finish should be high enough. The former ensures uniformity of the edge of the corrosion, thus ensuring the integrity of the network structure, make the printing graphic edge sharpness and color reduction to achieve maximum extent; the latter guarantee the clean degree of scraping and resistance rate. The surface tolerance of thick steel plate using cup printing machine on the surface is more demanding, excessive tolerance on one hand to accelerate the wear of oil cup, on the other hand, the relationship with the sealing properties of the ink used in printing machine, oil pan on to steel plate used in the cup machine to ensure the flatness tolerance more high surface finish and lower.The thickness of the steel plate has better flexibility, so scraping to ensure clean degree, but the manufacturing precision and the substrate support sheet on the surface of substrate for tolerance not required, the ink will leak in the process of oil cup and sliding plate. Another factor is the manufacturing precision of the oil cup sliding guide shaft, such as surface roughness and tolerances, reflected in the assembly and level of index, measurement of parallelism between the shaft and the guide plate to control is very important. From this point of view, thick plate oil cup pad printing machine manufacturing more difficult. Resin plateResin plateResin plate with nylon photosensitive plastic, casting in zinc plate surface, similar to the resin version of self-adhesive trademarks used above. Nylon has very good abrasion resistance, and it can be used for repeated friction of oil cup or scraper after photosensitive solidification. The advantage of using resin plates is that it is easy to obtain extremely fine dots, and the resin version is the first choice when printing small and exquisite articles. If the manufacture of cup printing machine reflects the manufacturing level of an enterprise, so manufacturing printing machines use resin version will be more difficult, after all, belongs to the nylon photosensitive emulsion polymer material, when its supporting substrate manufacturing precision, pad printing from general printing complete is not easy. The surface state of polymer materials is very fine, and slight defects will seriously affect the quality of printing.printing inkPrinting ink is still in the solvent ink, printing ink for screen printing inks have been replaced, the effect is very good, most of the manufacturers of ink printing ink and printing ink as a series of production. But screen printing ink used in pad printing process will also have a lot of problems. In contrast, the special pad printing ink drying faster and more stable, thixotropy better. The ink layer of pad printing process is relatively thin, and some want to get more eye-catching handwriting, ink pigment purity is higher, fineness is finer, these are the difficulties of manufacturing pad printing ink. In addition, a dedicated pad printing ink (ink is very few, the domestic production of recent development, very rapid prominent Zhongshan Zhongyi Ink Co. Ltd., Hangzhou kuvan Ink Co. Ltd., Shenzhen Miramar Ink Co. Ltd.)Types of pad printing ink:Ink specially used for pad printing is different from general solvent based ink, water-based ink and UV curable screen printing ink. Although pad printing ink and screen printing ink have some similar characteristics, but they are still very different. Different from screen printing ink, pad printing ink drying speed is faster, and this is also the most outstanding characteristics of pad printing ink. Simultaneous,Pad printing ink is often printed on the film, the use of 1 transfer printing ink is easily affected by some factors, such as temperature, humidity and static. Prepared specifically for printing ink including single component ink, two-component ink, dry type, oxidation and sublimation inks etc. 11) one component inkOne component ink (also known as solvent volatile ink) drying by solvent evaporation, this ink does