With the development of high technology, in order to achieve high printing quality and anti-counterfeiting capabilities, RMB uses a variety of anti-counterfeiting printing technologies in the printing process. The mutual penetration of various anti-counterfeiting printing technologies ensures that anti-counterfeiting is foolproof. The printing anti-counterfeiting technologies applied by RMB in the printing process mainly include:
1. Engraved gravure printing
At present, the printing of RMB is mainly based on gravure printing (some of which are printed with letterpress and offset), which is mainly to ensure its seriousness and anti-counterfeiting. The gravure printing plate is engraved, and its pattern line is groove-shaped, which is lower than the printing plate surface. After printing the pattern by applying ink, the ink adheres to the banknote paper and protrudes from the surface of the paper, and the graphic lines are fine and layered Rich, strong three-dimensional sense, there is a noticeable unevenness when touched by hand. Engraved gravure printing technology is widely used in the fifth set of RMB Mao Zedong's head, People's Bank of China bank names, denomination numbers, Braille marks, etc. In particular, the Mao Zedong avatar in the RMB should be hand-carved intaglio. Due to its complex process, unique pattern and high investment cost, it has strong imitation and anti-counterfeiting performance.
2. Wiring technology
Wiring printing refers to the simultaneous line segmentation on a layout is printed with different colors of ink at the same time, printing multiple colors at a time and the lines are intact, and the colors are not impregnated. Wiring printing technology was invented in China, and has been used as early as the third set of RMB. The fifth set of denomination figures on the front and back of the RMB (except for 20 yuan) are printed using engraved gravure wiring technology. The two different ink lines are naturally and completely docked, which is more eye-catching and more conducive to the identification of various anti-counterfeiting measures.
3. Barcode anti-counterfeiting technology
The number of the RMB is embossed. The fifth set of RMB 100 and RMB 50 uses horizontal and vertical double numbers, the horizontal numbers are black, and the vertical numbers are blue and red; 20 yuan is a two-color horizontal number, and the left half of the number is red. The right half is black. It is particularly worth mentioning that the non-color-mixing and color-isolating number technology adopted at 10 yuan is a unique anti-counterfeiting technology in China. The left half of the same number is red, and the right half is black. Among the black horizontal numbers of 100 yuan and 50 yuan, the two-color horizontal numbers of 20 yuan and the color-isolated numbers of 10 yuan, the black numbers are magnetic and can be read by the machine.
4. Offset printing technology
Counter-printing is a one-time mirror image pattern printed on both sides of the paper, which completely overlaps when viewed through light. In the fifth set of renminbi, there are yin and yang complementary counter-printing patterns, 100 yuan, 50 yuan and 10 yuan on the front left bottom and the back right bottom with a circular partial pattern, light observation, front and back patterns form a complete ancient coin pattern This method is called Yin-Yang complementary pairing. Complementary counter-printing is completed in one printing on a special printing machine, and its precision of printing is difficult to be achieved by ordinary offset printing machines, and is a very effective anti-counterfeiting measure.
5. Miniature text
Miniature text uses a special plate-making process to reduce the text to a level that is barely visible to the naked eye. It is printed on banknotes and can be observed with the help of a magnifying glass. Microtext can be printed in either offset or gravure printing, both of which are commonly used. Due to the limited resolution of current copiers and scanners, it is difficult to reproduce miniature characters. The fifth set of RMB issued bonds has micro-text with offset and gravure prints on the top and bottom of the back. The micro-text can effectively prevent copying and counterfeiting of ordinary offset printing to a certain extent.
6. Invisible denomination figures
Invisible pattern technology has the characteristics of easy identification, low cost and good anti-counterfeiting effect. Invisible pattern technology can only be realized by engraving gravure design, which can well prevent copying and offset printing forgery. The fifth set of RMB adopts this first-line anti-counterfeiting measure that has many advantages in one. There is an oval (circular, square) pattern on the upper right of the front of each issued coupon, placing the ticket face parallel to the eye The position of the camera is rotated by 45 ° or 90 ° facing the plane of the light source.
7. Rainbow printing
Rainbow printing is also called cross-color printing. It is the main color of the pattern or the background is composed of different colors, but the different colors on the lines or images are continuous and gradually transition. It is very natural and there is no obvious boundary, such as the natural transition of various colors of the rainbow . Rainbow printing is usually printed with a letterpress printing machine. It is based on the requirements of the printed product. After placing the separator in the ink tank, different colors of ink are placed in different separators. Under the serial action of the inking roller, the ink in the adjacent parts is mixed and then transferred to the printing plate. The shading on the fifth set of RMB is printed with rainbows, and its anti-counterfeiting effect is very prominent.
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