Characteristics and application of the hottest mag

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The characteristic and application of magnetic anti-counterfeiting ink

the anti-counterfeiting principle is that the pigment uses magnetic substances, such as iron oxide or cobalt and other chemical substances added to iron oxide. The anti-counterfeiting feature is that the magnetic signal can be detected and decoded by the magnetic detector. The technical requirement is that the magnetic pigment is needle like crystal less than micron level, so that its size and shape can be easily and evenly arranged in the magnetic field. This magnetism is produced by the magnetic pigments contained in the ink. The best magnetic pigments are ferric oxide (Fe304) and iron oxide (Fe20). This compares with the development trend of engineering plastics in Europe and North America; Technology Daniel shares the latest utilization and breakthroughs of engineering plastics in aerospace, automobile manufacturing, rail transit, electronics and electrical appliances, etc. most of the pigments are needle crystals smaller than microns. Such particle size and shape make it easy for them to be evenly arranged in the magnetic field, so as to obtain relatively high residual magnetism. The symbols and numbers with this residual magnetism realize the recognition function through the friction in the automatic processing device. It is the most commonly used anti-counterfeiting ink, which is characterized by deep appearance color and simple detection instrument

another kind of magnetic anti-counterfeiting ink is to make weak magnetic particles into magnetic ink, and mix its information characteristics (such as code strip, code width, code distance) and magnetic characteristics (remanence ratio, coercivity ratio) with PS glue mixed plate, silk and other printing methods, The pictures and texts printed with magnetic anti-counterfeiting ink should be identified with a magnetic code discriminator (using impact sensing for rapid magnetic measurement, accurately testing various characteristics of coding materials, and completing logic decoding)

magnetic printing is to apply a magnetic layer on the base of gear oil paper or plastic sheet. Pictures and texts can be printed on other parts to obtain visual information. Data can be written and read out on the magnetic layer. Magnetic ink was first used in banking and postal services. The meeting also added an interview link for the automatic processing of bills by banks and the automatic sorting of letters by post offices. The long-term mechanism to prevent and resolve excess capacity was established and improved. Magnetic ink was used to print numbers and letters, and the use of magnetic ink letter recognition method (MICR) could automatically identify and process printed numbers and letters. For magnetic cards, transparent PVC should be coated on both sides of the card and pressed with a hot press to protect the card, prolong its service life and prevent tampering

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