The fourth set of RMB mainly adopts overprinting technology and toppress wiring technology in the plate making and printing process, which greatly improves the anti-counterfeiting function of RMB. Gravure wiring technology is also a special printing technology for banknotes, which is characterized by more obvious colors, natural transition of color connection, no leakage of white, no misalignment, and the lines are observed into lines under a high-powered magnifying glass. Overprinting, printing technology is to use some special processes, so that the front and back of the banknote pattern once printed and formed, so that the pattern of a specific part of the front and back completely coincide Flat letterpress wiring technology is currently used in the RMB more reliable anti-counterfeiting technology, it is characterized by a complete line printing several different colors, no overlap, gap phenomenon.
Introduction to the 80th Edition of the 5-Corner Coupon: The 5-corner coupon is a water-free paper, the main color is purple-red, and the single ticket is 125×58 mm. Offset four-color printing. The front is a full edition of the color-indie pattern, the main scene is the Miao and Zhuang characters head and denomination text; the back main scene is a multi-color overprinted ethnic pattern entrusted to the national emblem, 1980 edition number. The crown ink is a red magnetic anti-counterfeiting ink. On April 27, 1987, the first batch of 80 editions of 50 yuan was issued.
In fact, six years ago I found that there are two kinds of products that use different inks and will collect it separately for research, when I read three sets of fluorescent ten yuan I went back to carefully study and analyze it, although there is a possibility of using the ink wrong, but think about this possibility is too small, to know that the modern printing plant management is very strict, according to the special news that it has its own set of special management system, for today's printing plant if there is such an accident again, it is inevitable that the technique is low-level, And I don't believe in things like professional printing inks that don't have any distinguishing marks and printed memorizers.
There is also a long release cycle or because the cost performance is simply a problem of anti-counterfeiting and cost, and there is a precedent for changing the layout due to changes in the times or changes in costs when there are three sets. Therefore, in theory, it is possible to combine and derive four layouts. (One represents printed one, modified, and so on; two unmodified; three back fluorescent; four non-fluorescent.) 1, one three; 2, one four; 3, two three; 4, two four combination of 4 categories. In the end, which one is genuine, and how many are derivatives? Only when the original production, factory (RMB seal) records and coupons are collected can they have explanatory power.
Perhaps before the official fourth set of RMB distribution materials was made public, I still did not know that it was the master, that sub-printing plate, nor would I know that it was set to be printed with colorless fluorescent ink or color fluorescent ink, and then revised, and whether the judgment I made today was correct or not, and whether my classification method could be recognized by everyone.
It is possible to add other raw materials to the papermaking process, but the production of RMB is a serious matter, so the above possibilities are too small, or the secondary pollution in the middle of the shipment, and the various intentional and unintentional human factors that occur in the re-circulation, of course, I myself will not do this, and my collection is also new.
The fourth set of renminbi strengthens the anti-counterfeiting process of paper. Paper is the main material for printing banknotes, the main ingredient of RMB paper is short cotton wool, paper smooth, tough, folding resistance, good stiffness, and has a certain degree of chemical corrosion resistance, can be used in a long period of time and is not easy to damage. The fourth set of RMB, except for the 3 kinds of dime coupons without watermarks, the main coins are watermarked and anti-counterfeiting.