Anti-counterfeiting printing ink types and anti-fake classification (below)

The anti-counterfeiting principle is the addition of specific compounds to the ink. Its anti-counterfeiting feature applies a demystifying chemical test within a predetermined range and immediately reveals concealed images or produces fluorescence. Different temperatures and pressures have different combinations of encoding and decoding.

XIII. Stealth security ink:

The anti-counterfeit principle is to add invisible marks such as Isotag, Coircode, etc. to the general ink. Its anti-counterfeiting feature is due to the fact that these marks are invisible, and only when professionals and certain instruments and light of a specific wavelength irradiate the specific marks appear, and thus the authenticity thereof can be identified. Its technical content is higher and its anti-counterfeiting performance is better.

XIV. Intelligent Machine Read Security Ink:

The principle of anti-counterfeiting is to use the variability of intelligent anti-counterfeit materials, that is, the anti-counterfeiting material consists of a variety of variable chemical substances, including the nature, type, quantity, content, and existing forms of the characteristic compounds to constitute the particularity and individuality of the security materials. Then, according to these special characteristics and the production of anti-counterfeiting materials and manufactured detection equipment (can be processed by the calculator, the results obtained, the authenticity of the test) to achieve anti-counterfeiting purposes. Its security features include: (1) Uniqueness and complexity. The technology used in the technology has many components, many production equipments, large investment, and complicated processing technology. (2) High technology content. The technology spans multiple disciplines and integrates multidisciplinary science and technology. (3) Intuitive and quick. The results can be seen directly from the calculator screen in 5 to 30 seconds. (4) Dedicated. Due to the use of calculator identification, the variability is extremely strong. Each authentication terminal has anti-counterfeit products and machine encryption. Only when it knows the identity of the seized mark or the seal code at the same time can it be identified with a dedicated detection instrument.

15. Multifunctional or integrated security inks:

Anti-counterfeit principle is to add other anti-counterfeiting technology in the general anti-counterfeit ink, so as to achieve multiple anti-counterfeiting functions. For example, a laser holographic logo combined with a fluorescent encryption security ink. Its anti-counterfeiting features, such as laser hologram identification combined with fluorescence encryption anti-counterfeiting ink, add new anti-counterfeiting measures to perform secondary encryption without increasing the integrity of the laser holographic identity, thereby improving its anti-counterfeiting function. Currently, a secondary encryption comprehensive anti-counterfeiting technology for laser hologram identification has been adopted on the market, ie, a special fluorescent material that can be detected through a certain process after being added to the laser hologram logo, is invisible to the naked eye under sunlight, and displays special features in the detection of special instruments. Colored fluorescent graphic. The technology has the characteristics of friction resistance, heat resistance, convenient and accurate detection, and strong anti-counterfeiting, and the production cost is less increased.

16. Light Variable Ink (OVI):

The principle of anti-counterfeiting is to add special materials to the ink, which will cause discoloration of the seal under different lighting angles. This is a kind of anti-counterfeiting ink with high technological content. Due to the complicated raw material production process, high technical difficulty, and large investment in equipment, the cost is relatively high and it is very difficult to prevent it. This kind of ink is mainly used for the printing of important documents such as banknotes, evidence, identity cards, passports, and securities. The inks that can only be adapted to the printing are gravure printing and screen printing. However, at present, there is also a dioptric ink which also has a refractive color effect. Due to its simple processing of raw materials, although the color change effect is far less than OVI, it can also play a security effect, and the cost is relatively low.

Seventeen nano ink:

Nanomaterials and nanotechnology are emerging high-tech products. Now they have developed rapidly. They have begun to penetrate into various fields and have successfully obtained a lot of high-performance and special-performance materials. This is a new material in the history of material development. Milestones. Nanometers are a unit of length, meaning that the material itself is in an ultra-small, ultra-fine state. Based on the various properties of nanomaterials, applying it to the ink system will bring a huge boost to the ink industry. Actually, there are many ways to obtain nanomaterials, such as high-temperature sintering (such as sintering of carbon nanotubes), precipitation, high-temperature water dissolution, chemical vapor condensation, or modern plasma energy polymerization. By means of the above methods, various components in the ink, such as resins, pigments, fillers, etc., can be made into nanoscale raw materials. In this way, because of their high degree of fineness, they have good flow and lubricity, they can achieve better dispersion, suspension, and stability. The amount of pigment used is less, but the hiding power is high, the gloss is good, the resin particle size is fine, and the film formation is continuous, uniform and smooth. The layer is thin, but the image is clear. If used in a UV ink, it may result in a faster curing rate while eliminating shrinkage wrinkling of the film due to the fine and uniform dispersion of the filler. In the case of glass-ceramic inks, if the inorganic materials constitute nano-scale fineness, it will save a lot of raw materials and print more refined and more beautiful higher quality patterns. In the pigment industry, the ink manufacturing industry has brought about a tremendous change. It no longer relies on chemical pigments but instead selects the appropriate volume of nanoparticles to present different colors. Because some substances in the nano-scale, different particle sizes, colors are different, or different substances, different colors, such as Ti02, Si02 in the nanoparticles are white, Cr203 is green, Fe203 is brown. There are also inorganic nanomaterials such as nano-A1203 with good fluidity, if added to the ink can greatly improve the wear resistance of the ink film. Nano-scale carbon ink is conductive, has a good shielding effect on static electricity, to prevent electric signals from being disturbed by external static electricity. If it is added to ink, it can be made into conductive ink, such as large-capacity integrated circuits, modern contact panel switches, etc. . In addition, in conductive inks, if Ag is made into nano-scale instead of micro-sized Ag, 50% of Ag powder can be saved. This conductive ink can be directly printed on ceramic and metal. The film is thin and even and smooth. . If the Cu, Ni material made of 0.1 ~ 1μm ultrafine particles, it can replace the palladium and silver and other metals conductive. Therefore, the combination of nanotechnology and anti-counterfeiting technology will open up another broad field of security ink.

Source: Greater China Graphic Arts Network