Anti-fake precious metal product, manufacturing method of anti-fake precious metal product and anti-fake detection method for anti-fake precious metal product
A technology of anti-counterfeiting precious metals and precious metals, which is applied in the direction of coin inspection, instruments, fluorescence/phosphorescence, etc., can solve the problems of undiscovered and unset ink printing areas, etc., to improve anti-counterfeiting performance, high confidentiality and uniqueness, and reduce purchase risks and the effectiveness of financial institutions in detecting risk
Active Publication Date: 2013-10-16
INDUSTRIAL AND COMMERCIAL BANK OF CHINA
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Problems solved by technology
[0010] However, for precious metal products such as gold coins, gold bars, etc., usually there is no ink printing area on the surface
After investigation, no technical reports about the anti-counterfeiting technology of recessive DNA anti-counterfeiting ink or dominant DNA anti-counterfeiting ink applied to precious metal products in the prior art were found.
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Embodiment 1
[0040] See figure 1 As shown, this embodiment provides a precious metal product. The anti-counterfeiting precious metal product includes a precious metal body 101. The surface of the precious metal body 101 is provided with one or more depressed pinholes 102, and the pinholes are filled with DNA anti-counterfeiting ink 103.
[0041] The precious metal product in this embodiment is specifically a gold coin, and its front view is shown in figure 2 shown, see the schematic diagram on the back image 3 shown. The gold coin is 2cm in diameter and 0.165cm in thickness. For details about the location of the pinhole, please refer to Figure 4 shown. The back of the gold coin in this embodiment is provided with an I-shaped raised part, and 16 sunken pinholes are distributed on the surface of the raised part, and the opening diameter of each pinhole on the raised part surface is 0.05mm, and the pinhole depth is 0.5mm . The section of the pinhole shown in the figure is only schema...
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Abstract
The invention provides an anti-fake precious metal product, a manufacturing method of anti-fake precious metal product and an anti-fake detection method for anti-fake precious metal product. The anti-fake precious metal product includes a precious metal body. One or more concave pin holes are arranged in the surface of the precious metal body. The pin holes are filled with DNA anti-fake ink. The depths of the pin holes in the surface of the precious metal body are 0.4 to 0.6mm. Diameters of openings of the pin holes in the surface of the precious metal body are 0.04 to 0.06mm. According to the invention, since high-tech DNA biological anti-fake technology is adopted for the anti-fake precious metal product and the DNA volume in the anti-fake precious metal product is extremely low, a counterfeiter cannot know specific positions of the DNA anti-fake ink and sequence and molecular weight of anti-fake DNA, so that security and uniqueness are extremely high. Therefore, anti-fake performance of the precious metal product is improved, and purchase risks of purchasers and detection risks of financing institutions are reduced.
Description
technical field [0001] The invention relates to an anti-counterfeiting precious metal product, a manufacturing method thereof and an anti-counterfeiting detection method. Background technique [0002] At present, the business of precious metal products (such as gold coins, silver coins, etc.) is developing rapidly, and precious metal products have gradually become the objects of investment and collection of residents. In particular, the repurchasable precious metal products launched by financial institutions (banks) are welcomed by the market. After the financial institution sells this precious metal product, it promises to repurchase it in the future. In this way, precious metal products can be realized quickly and at a low cost. [0003] The production process of existing precious metal products (taking the production process of gold products, such as gold coins, gold jewelry, etc. as an example) mainly includes: melting gold→inverting the mold→polishing→holding the mold...
Claims
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IPC IPC(8): G07D5/00G01N21/64
Inventor 郭贺郭继弟郭英明李橙李开元
Owner INDUSTRIAL AND COMMERCIAL BANK OF CHINA