Method for counterfeit protection through data-rich magnetic printing
Publication Date: 2013-Feb-06
The IP.com Prior Art Database
Disclosed is a method to print densely-packed magnetic nanoparticles to prevent counterfeiting of electronic components.
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Method for counterfeit protection through data -
Anti-counterfeiting measures are extremely important for protecting both personal and government property. These measures are commonly used to protect electronics, currency, art, pharmaceuticals, and logos. IBM* has an effort on both misbranded and counterfeit parts to prevent field reliability issues as well as loss of revenue. Various methods are available to attempt to prevent counterfeit parts from entering the field. However, to date, IBM simply employs a bar label printed with an authentication code. Other methods include use of DNA taggants, but these can be expensive as well as cumbersome to identify in the field. A lower-cost solution is needed that allows for detailed information to be printed on each part. The concept proposed here involves densely printing magnetic information on the parts which can be easily read in the field, yet difficult to reproduce due to the density of the magnetic bits (data fields). Magnetic nanoparticles are dispersed in a suitable polymer matrix, then printed using a 3D printer to generate discreet, individual data bits over the intended surface, thereby providing a magnetic medium upon which to densely record part information.
The printer for this invention would consist of two independent printheads, each on a custom track which allows them to traverse the entire printing surface horizontally as well as enabling them to move vertically as each layer of material is printed. The figure below illustrates one possible embodiment of this design. Although dual printheads are depicted, it should be understood that a single printhead would be sufficient. However, multiple printheads would increase print speed.
Both of the printheads would utilize new technology enabling them to print droplets approximately 500 femtolite...