The hottest paper fingerprint security printing te

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"Paper fingerprint" anti-counterfeiting security printing technology

product counterfeiting has increasingly become a serious problem: whether it is famous brand commodity manufacturers, or the printing industry's anti-counterfeiting, that is to say, choosing the corresponding dial and pendulum fake packaging producers, they have not yet fully understood the large number of counterfeiting methods flooding the market. Users and technical consultants in the printing industry need to provide a lot of anti-counterfeiting methods to their customers, but they often let us wait and see! Feel powerless. This is because we should not only weigh the technical standards, but also consider the economic cost

complexity of anti-counterfeiting technology

anti counterfeiting signs must constantly combine new content in order to always outperform counterfeiters. But this means not only developing anti-counterfeiting technology, but also improving the difficulty of its decoding. For this reason, special instruments are often needed to decipher anti-counterfeiting signs: such as magnifying glass or laser indicator with accurately specified wavelength. People are constantly improving the technical complexity of this combination of anti-counterfeiting signs, and at the same time, it is also necessary to make detectors everywhere available on the spot. However, for customs officers who have only a short time and limited means to inspect goods, how to inspect? Many anti-counterfeiting signs are visually attractive; But they must also be easy to sell and apply

cost problem

the second problem faced by many folding carton printing plants is high cost pressure: some anti-counterfeiting measures for high-end products are gradually replaced by other measures due to the use of expensive special inks or expensive surface finishing. Of course, this should consider not only the cost of special materials, but also the cost of related processes: additional printing units, the purchase of detectors, the cost of verifying and contacting forged marks, and other more. However, more and more low-value items are counterfeited, resulting in huge losses: for example, a forged small bearing is much less accurate than the genuine one, which will make large-scale production machines useless

protect by design

the anti-counterfeiting logo designed directionally is becoming more and more important: integrate the anti-counterfeiting logo into the printing data before printing, and then print it at the same time with color printing. To this end, Manroland printing machine manufacturing company has planned to cooperate with different companies and will promote exemplary solutions in practical applications. The advantage of the directional design method is that no other process costs will be incurred after making the coded data at one time

in addition to the verification method, it is often necessary to track the way products arrive at customers. For example, it is tracked by the corresponding identification mark or continuous code, while the folding carton made for famous brand goods needs to be carried out individually. The entrepreneurship service department has established a group code for each entrepreneurship unit. However, this kind of identification mark can not reach the acceptable printing quality in the high-speed printing process. Coding and other identification marks also have shortcomings and cost problems. So, in order to resist counterfeiting and gray market purchase, how to ensure tracking and re tracking

a new anti-counterfeiting measure vigorously publicized at present is to use the random mark of the substrate to identify the printing products according to the paper fingerprint: when making paper, individual paper fibers are randomly distributed with each other, so they form a contour by overlapping fibers. This kind of contour is absolutely different in a certain part because of a large number of fibers and the chaotic production process on the micro plane, and has a high probability. As long as each printing sheet has a separate fine structure, it can be optically detected, encoded and saved. Therefore, using the paper structure as a sign to identify the substrate can effectively prevent counterfeiting

paper fingerprint

this method of identifying printed products is not new: it was patented in the 1980s and 1990s. However, this technology has not been widely used correctly. Because the paper structure is prone to dirt and wear, the paper fingerprint method is often discriminated compared with other methods in practice; Similarly, there is almost no corresponding cheap reader available, which is its defect in reliability recognition. How can the scanner or scanning laser reliably identify whether the paper structure is damaged? The inventor is still studying this problem and the solution

s2i technology

at the 2004 Hannover Expo, the research team of Mannheim University, with its S2i (security2image) demonstration structure, acted as a pioneer to continue to develop paper fingerprint methods. The basic innovation of S2i technology is to strengthen the paper fingerprint with the help of printing process: the unique change of printing ink in the paper structure can act as a symbol. Because ink acts as a catalyst for paper fingerprints, it establishes the basis for a cheap method of indirect detection of paper fingerprints. At present, S2i technology is undergoing different field tests and pilot applications, which can be identified by using the platform scanner available in every office

cheap and safe

it is very cheap to make S2i identification marks. The codes can be printed together on the printing machine, and can be decoded by using common scanners in the market. In addition, this method provides a high degree of security against counterfeiting. Because S2i data is stored in the identification mark in digital form, digital passwords can be used according to the public key system (PKS). Compared with the simulation method, PKS is considered to be more secure and reliable

pks (public key system) stipulates the use of a pair of passwords: data that uses one of the two passwords to compile passwords can only be decoded using the other password. Although it is possible to decode this kind of password in principle, it is practically impossible for counterfeiters not only to know the password, but also to know the secret location of measuring the paper structure, because it is not worth so much effort to fake

s2i fingerprint printing

in addition, S2i method has strong ability to prevent fingerprint wear and paper powder: the coding based on printing has a high data density, and the data can be stored repeatedly. When decoding, it can safely identify defects and eliminate the areas involved in the analysis of paper and printing structures. This high reliability is the main advantage compared with the method based on simple analysis of paper structure. As we all know, folding cartons will withstand a variety of loads in the process of loading, transportation and storage. S2i method is used to ensure that this damage can be identified. Therefore, the expert committee of the German Ministry of education and Research (BMBF) gave a high evaluation to the new generation of S2i technology for paper fingerprinting, and accepted the submitted project draft under a large number of innovative suggestions. In 2008, the project named o-pur is planned to be launched

o-pur project

research on new detection instruments and the existing possibility of using new technologies and software to identify products will continue to be the project content of the German Ministry of education and research in the future. At present, it has begun to check the use of mobile mounted digital cameras. With 100% market coverage in Germany and the number of mobile phones with camera function still growing, people can easily use it as identification media

Roland Mann is also a temporary organization member of the planning project of the German Ministry of education and Research (BMBF). In order to quickly detect images and encode them on production machines, in printing and post press processing, they are currently embarking on another scheme of this project. They tested the detection and coding of paper fingerprints on their own printing machines: first, offset printing, but also all other printing methods. In the face of high-speed production, this is undoubtedly a challenge of image analysis. However, there is already a theoretical model of engineering projects, which should be implemented and tested within the project scope of the Ministry of education and research in the future. In addition, S2i coding should also be tested on other materials. In this regard, the individuality of ink and substrate cooperate with each other, which can provide recognizable personalized graphics

today's high-efficiency anti-counterfeiting sheet indicates the ability of steel to resist fracture, and the cost of large and small parts has been less than 1 euro cent, which can be applied to the bulk market. The goal of this plan is to apply it in as many fields as possible. Although S2i technology has not been integrated into high-speed production machines, it can be used by interested parties: for example, document security and anti-counterfeiting in digital printing

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