A large inventory of processing technology after digital printing part A
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I also remember that during the Drupa 2016 exhibition, the Scodix company in Israel was very lively and the products were eye-catching. The samples displayed by the company and various fine prints produced on the spot surprised almost every visitor. Scodix's "Buzz" stems from its innovative Scodix sense high-gloss local finish, Scodix foil analog anodized aluminum finish, and Scodix glitter partial flash finishing technology, which can be used to achieve partial gloss, bronzing, and local threshing. Effect.
Digital printing has become one of the mainstream printing methods in the printing industry. It perfectly illustrates the most active aspects of printing with short-run, personalized, and on-demand advantages. However, the market is increasingly demanding the quality and characteristics of printed products. It is not only the quality of digital printing products that is comparable to the quality of traditional printing, but also the digital printing products that have a wealth of performance effects, such as bronzing, bumps, and rainbow effects. How to use digital technology to achieve these effects is the direction that the industry has been studying.
Scodix took the lead in using digital technology to realize printing efficiency and match digital printing speed. In addition, there are Ricoh production digital printing machines on the market, and DS series digital hot stamping systems introduced by China Institute of Printing Science and Technology, etc. And so on, they use different technical routes to achieve the finishing effects such as bronzing, glazing, and dipping after printing. This article will introduce these technologies in detail.
Scodix UV Inkjet Technology
Scodix uses 100% solids UV ink, no solvent evaporation, high printing efficiency, the ink is diluted with active monomer to ensure that the system is at a low viscosity (about 10mpas), so that the ink can smoothly through the nozzle and sprayed in the form of ink droplets Substrate surface. The curing of the ink is a crosslinking reaction initiated by the activation of the initiator by ultraviolet rays. If the curing is not complete, the resin component in the ink is heated to produce a strong adhesiveness and then transfer is effected.
Key technologies. Scodix RSP technology is scanning and positioning technology. Based on dual CCD acquisition system and compensation software, the original can be rotated, scaled and moved to adapt to the substrate so as to achieve accurate positioning and strict registration.
Process. Scodix Sense achieves the effect of matte-to-light changes in the ink layer by changing the parameters of system transparency; Scodix Crystals achieves 3D glazing effects through the accumulation of ink layers; Scodix Foil achieves bronzing by heat-activated transfer printing after ink layer curing; Scodix Glitter After the ink layer is cured, a layer of bright powder is sprayed and then cured to achieve a gold scattering effect.
Ricoh toner printing technology
The most representative model of this technology is the Ricoh Pro C7100SX single page color production digital printing machine. This machine can print colors other than CMYK four colors, and can also realize white, metallic and local UV expressions, especially suitable for high-grade Carton packaging and plastic box packaging proofing and a small amount of printing.
Key technologies. (1) Fifth color: White or transparent color can be used as the fifth color, white toner expands on the expressiveness of colored paper, and can also be used on transparent media, such as light boxes, window stickers, transparent toner It can realize local glazing, watermarking, and similar metal texture effects that provide high-end special feeling. (2) VCSEL: VCSEL is a vertical cavity surface emitting laser technology that can emit 40 laser beams at the same time, achieving high resolution (1200×4800 dpi), enabling vivid reproduction of small text and fine lines. (3) AC transfer technology: The AC transfer technology improves the transfer effect of textured paper, so that a thick elastic and large fuser belt can apply sufficient pressure and heat to fully melt the toner, thereby achieving beautiful printing of textured paper.
Process. The carbon powder consists of resin, carbon black, magnetic iron oxide, charge control particles, lubricant, and hot-melt plastic. The resin and carbon black are the main imaging materials. If the carbon black is removed, it becomes a transparent color toner. . Increasing the transparency of the toner in the toner can increase the gloss of the transparent toner. After printing the four colors, the toner of a single transparent color can be printed to increase the local gloss of the graphic, thus achieving a prominent glazing effect. After printing gold, superimposing the transparent toner can show the metallic effect (false gold).