No horizontal printing principle, history and development
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Principle
The unique pre-photosensitive plate can be printed on board without the need for wet water. The non-printed portion is covered by a layer of ink that is discharged, while the printed portion is slightly recessed and forms a polymer surface that accepts ink. The non-horizontal version features high quality, easy printing, and high-quality production without pollution, a unique printing process for water and alcohol.
Course
1. In 1.1798, Alosi Sencfeloler was invented on porous limestone, using a greasy ink pen to write the print. When printing, it was moistened with water, so that the non-fat ink was not contained in the imprinted stone, and then the ink was only stained. The ink-printed portion of the grease finishes the lithographic plate pattern in which the same plane has printed and non-printed lines.
2. East Asia lithography occupies about 75% of the total printing output, which is the most convenient and most widely used layout. The advantage is that the plate making is easy and inexpensive, and the indirect printing is not picky on the paper.
3. Lithographic printing uses non-printing to keep non-printing clean, resulting in ink emulsion printing density instability problem, plus temperature, degree, print, ink layer thickness, printing speed, causing moisture evaporation and consumption change supply is difficult to control In particular, the whole surface is uneven and the production technology is more complicated.
4. Although some people used corrosion embossing on the lithographic printing machine before, in 1964 Heidelberg used the embossing machine to indirectly print the Latcrsct, and the Latcrcrcss prefix plus the Offsct suffix, which can be printed in a long version, especially thick and rough. Paper is very beneficial.
5. In the late 1960s, 3M Company of the United States applied for patents with a low thermal coefficient material such as Teflon and other silicone rubber to complete the printing method of water-free and ink-repellent ink, but it has not been commercially viable.
6. In 1972, Toray Toyo Co., Ltd., a company that specializes in synthetic fibers and chemical products, bought 3M silicone rubber without horizontal printing patents and commercialized it.
7.Toray first introduced in DRUPA 77. In 79 years, there was a TAP-free type watermark-free version. In 1983, the negative-type TAN-free watermark version was available, but it still could not solve the problem of long-distance printing stability.
8. In 1985, the printing machine 1 ink roller cooling system was improved. 2 ink improvement. 3 The improvement of the ink roller adjustment technology has made the non-horizontal printing step by step gradually accepted by the printing industry.
9.Toray was introduced in 1986 with no water-free UV drying ink. In 1988, commercial thermosetting and non-horizontal printing was introduced. In 1990, there was no horizontal version of high-durability positive film. In 1999, there was no watermark version of CTP.
10. American Prcsstck introduced GTD DI from Heidelberg in 1990, with tungsten-free needle discharge imaging without horizontal printing, 95 years of laser thermal imaging, and established the world's leading computer to press status, because Presstek is completely free of development, no horizontal printing on the plate , to achieve the characteristics of both the printing machine and the digital plate making machine.
11. Currently, the Prcsstck DI technology is used in Heidelberg Qm-46DI, Adast, Karat, Sakurai, Akyama, Imation, Nilpeter, Alcoa, Omso, and the like.
12. Toray plate structure 1 aluminum substrate, 2 glue layer, 3 photosensitive layer (heat sensitive layer), 4 silicone layer, 5 protective layer. The photosensitive layer and the positive film type are photosensitive bonding type, and the negative film type is a different functional structure of the photosensitive decomposition type.
13. Development step: 1 except for the protective film, 2 pre-swelling, 3 brist development to remove the peeling off part of the enamel layer, 4 dyeing and developing the print. It can be printed without dyeing, but the dyeing can be recognized and scanned by the scanning scanner. The silicone film is removed from the mouth and the tail of the plate. The positive film is not sensitive, and the negative film is sensitive. .
14. With special water-free ink, it can produce a very thin liquid layer on the surface of the rubber to prevent the ink from sticking to the non-adhesive effect. It has been used with oyster sauce because the anti-catalyst afterburning system is not used now.
15. No horizontal printing Because there is no cooling effect of the evaporation heat of the running water, the printing roller may increase by 15 ° C in the 10,000-volume printing machine, which is higher than 8-10 ° C, which is unfavorable for printing. It does not stick to the ink, and the ink is divided into four kinds of anti-separation forces of HNL and LL, and it also responds to different printer speeds and temperature conditions.
16. Control panel and ink roller temperature are necessary in the range of ±1.5 °C. Some inks are only ±0.8 °C temperature tolerance, and some are ±1.5 °C. If the temperature is too high, it will be dirty, the temperature is too low, the ink is poorly moved, and the full version is not. White spots actually occur. Therefore, there is no horizontal printing conversion ink balance technology into a more data-managed temperature control. In principle, warm water and chilled water facilities should be installed to keep the start-up and printing works going smoothly.
17. No horizontal printing advantages 1 printing is easy to avoid water balance. 2 The ink color concentration is high and stable. 3 fine prints are fine. 4 can print 400 lines or so, high-speed printing. 5 reduce the occurrence of waste paper. 6 work efficiency can be improved. 7 small printing is easy. 8 printing machine construction is simplistic. The 9th edition has a strong contrast. 10 paper stretches less. 11 talent training is easy.
18. Can not print the shortcomings 1 patent version and ink is more expensive. The printer configuration changes must be cooled. 3 plates have a protective film that cannot be automatically developed to produce 4 layers of rubber that are not resistant to friction. 5 revisions are not easy to fill. 6 non-photosensitive printing plate is easy to age and dark reaction. The 7th edition is harder to apply to skin color and lighter prints. 8 consumes a lot of ink.
19. Waterless sheet-leaf printing machine has been easily found, because many leaf-leaf machines have an ink-ink cooling system to maintain a constant temperature of the printing plate and the ink supply system, but only the printing of the plate is different.
20. Waterless wheel lithography machine has MN Rolancl polyman. KBA Crotina, waterless roller transfer machine.
21. The single-fluid non-wetting system printing method uses a traditional watermarked version and an ink-blended emulsified ink, but it is important to evaporate water.
22. The on-board plate-making has been changed to a horizontal printing plate, which is convenient in printing plates that can be used in other exterior plates.
23. No horizontal printing on non-absorbent and UV-UV on the plastic surface. The development prospects of credit card and CD-ROM are very good.
24. The thermal CTP non-horizontal printing plate will become the mainstream. The leading non-horizon printing development is mainly due to the short engineering, good quality and high printing tolerance, which can improve the technical difficulty of personnel.