The hottest special anti-counterfeiting printing i

Special anti-counterfeiting printing: constantly changing and constantly new (Part 1)

in recent years, with the continuous development and application of high and new technology, in the anti-counterfeiting of printing technology, there have been a variety of anti-counterfeiting technologies of special printing processes, which play an important role in the field of anti-counterfeiting, especially in the printing of banknotes, tickets and packaging anti-counterfeiting printing

combined printing technology

combined printing technology includes flat combined printing and multi process combined printing. Generally, one high-end package is made of raw materials. There are many perfect entrepreneurial environments in the design of upholstery and printing products, which provide enough opportunities for founders to try and make mistakes. Large color blocks, multi-color sequence continuous tone pictures, complex lines and patterns, etc., and a single printing technology means great difficulty. In order to make the printing and anti-counterfeiting effect ideal, the anti-counterfeiting technology of flat convex printing is adopted, that is, the advantages of high pressure and uniform inking of relief printing machine are used to print a large area of field color blocks, and the advantages of flat and soft offset printing pressure, rich surface layers and strong performance are used to print four-color continuous and complex line parts, so that the advantages of developing strengths and avoiding weaknesses can be achieved, and the effect is very obvious

if you want to print a package with a large area of spot color and physical photos of the product, you can use flat convex full print anti-counterfeiting technology. First, the spot color is printed by embossing method, and then the physical photos of the product are printed by lithography technology. In this process, there is a precise overprint of flat printing and spot color pattern more than the usual four-color offset printing, so it is required to design a paper feeding mechanism and embossing operation procedures matching with the offset paper delivery mechanism on the embossing machine to ensure the accuracy of offset printing and embossing. These requirements objectively increase the difficulty of printing, making it difficult to master the whole convex printing process, but in fact, it makes the counterfeiter not grasp and achieve a good anti-counterfeiting effect. For some more demanding and complex prints, flat convex concave and equal multi process combined printing can also be used. In short, the resolution is also a comprehensive consideration that manufacturers need to consider when designing and producing experimental machines. The printer is complex, and the more difficult it is to print, the better the pseudo effect.

multi color serial printing technology

multi color serial printing is also known as cross color printing, which is generally printed by relief printing machines. It is based on the requirements of prints, after rotating the partition in the ink tank, and then put a variety of colors of ink in different partitions. Under the action of the inking roller, the ink of adjacent parts is mixed and then transmitted to the printing plate for printing. With this printing process, multiple colors can be printed at one time, and the middle transition is soft. Because it is difficult to see the rotation of the ink tank partition from the print, and it is difficult to distinguish the amount of ink in different hues from the print, it can also play a certain anti-counterfeiting role. If this process is used in large-area shading printing, its anti-counterfeiting effect will be more prominent

opposite printing technology

part of each printed pattern on the front and back of banknotes or other tickets, and when the pattern is observed through light transmission, it can be reconstituted into a complete pattern. Banknotes in many countries use this anti-counterfeiting printing technology. It is completely opposite printed, such as the circular pattern under each face of Hong Kong dollar of Standard Chartered Bank of Hong Kong. Complementary pairs are printed with the D-shaped pattern on the German mark banknote and the decorative pattern next to the RMB Braille, and portrait pairs are printed with the portrait of the French franc on the front and back, etc

pattern docking printing

pattern docking is a new process of shading printing, which has two forms. One is full-scale printing of patterns. After the currency or ticket is cut according to the specified size, the original pattern on the shading is incomplete on the edge of the currency or ticket, but if the two cutting edges are butted, a complete pattern can be formed. For example, the shading pattern on the left and right sides of the 100 yuan front in the 1990 edition and the 1000 Yuan Hong Kong dollars issued by the Hong Kong and Shanghai Banking Corporation used this technology. The second is to print trimming marks on the four sides of the face, fold these marks on the bottom, and the lines are completely consistent, such as LAN Dun banknotes

multicolor wiring and overprint technology

when there are more than two colors on the same line of the face pattern, the discolored wiring is neither separated nor coincident. To achieve such a precise connection, we must have superb and precise equipment and technology. This printing technology is often used in the printing of banknotes and securities. This wiring technology, which was called "Orlov process" by the former Soviet Union and some central European countries, can also print multicolor wiring. In the past, this kind of connection can only be used for offset printing. In 1957, China developed a flat relief multi-color connection banknote printer, which can complete the precise connection of four color patterns at one time. In 1960, it was used for printing RMB, and later it pioneered gravure connection technology. In addition, on the basis of continuous printing, several color inks are used to overprint the same pattern, which is multi-color overprint technology. Multicolor overprint can form a variety of color overlaps, making the patterns colorful and dazzling. This is a high-precision offset printing technology with good anti-counterfeiting effect

(to be continued)