The first thing that comes to mind when it comes to postpress processing is folding, saddle stitching, punching, and so on. But what is coating? With the rise of digital printing, people are paying more and more attention to the performance of toner on paper. Unlike traditional inks, toner stays on the surface of the substrate and does not penetrate. This caused the ink film of the printed product to be scratched and peeled off during the subsequent process. UV coating is a solution, but many digital printing systems do not include this process. The K2 Systems Group introduced here offers a low-cost offline coater for digital (sheetfed) printing.
K2 DigiCoater Premier is suitable for digital and small format printing. Its maximum coating size is 15 x 21 inches. The machine is self-contained with a paper feeder unit, coating, UV curing system and a take-up unit. Its maximum speed is 6,000 sph. K2 claims that the machine can be coated on any material such as onion paper or cardboard, setting it quickly and with a moderate coating thickness. The machine covers an area of ​​only 10*3 feet. Digicoater Premier is also capable of localized sheet coating. K2 said that this coater has a very short cleaning cycle and can also perform aqueous and special coating. K2 also developed a coating formula for printers or special inks. This is mainly because digital printers have different toners and liquid inks. To achieve the desired quality of post-press processing, special coatings must be applied.
Source: Bison
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