US 12,293,252 B2
Encoding element and anti-counterfeiting product
Kai Sun, Beijing (CN); and Dong Yang, Beijing (CN)
Assigned to ZHONGCHAO SPECIAL SECURITY TECHNOLOGY CO., LTD, Beijing (CN); and CHINA BANKNOTE PRINTING AND MINTING CORP., Beijing (CN)
Appl. No. 18/556,585
Filed by ZHONGCHAO SPECIAL SECURITY TECHNOLOGY CO., LTD, Beijing (CN); and CHINA BANKNOTE PRINTING AND MINTING CORP., Beijing (CN)
PCT Filed Dec. 30, 2021, PCT No. PCT/CN2021/143395
§ 371(c)(1), (2) Date Oct. 20, 2023,
PCT Pub. No. WO2022/222542, PCT Pub. Date Oct. 27, 2022.
Claims priority of application No. 202110426270.9 (CN), filed on Apr. 20, 2021.
Prior Publication US 2024/0211711 A1, Jun. 27, 2024
Int. Cl. G06K 7/14 (2006.01); B42D 25/23 (2014.01); B42D 25/29 (2014.01); B42D 25/328 (2014.01); B42D 25/342 (2014.01); B42D 25/369 (2014.01); B42D 25/378 (2014.01); G06K 19/06 (2006.01)
CPC G06K 7/1417 (2013.01) [B42D 25/378 (2014.10); G06K 19/06037 (2013.01); B42D 25/23 (2014.10); B42D 25/29 (2014.10); B42D 25/328 (2014.10); B42D 25/342 (2014.10); B42D 25/369 (2014.10)] 16 Claims
OG exemplary drawing
 
1. An encoding element, comprising:
a printing stock, wherein the printing stock has an encoding area;
at least one group of markers, wherein the at least one group of markers is provided on the encoding area, each of the at least one group of markers has a plurality of markers, each of the plurality of markers has at least one attribute, and at least one of the at least one attribute is the same as that in each of the at least one group of markers, the plurality of markers is randomly distributed, such that encoding information of the encoding element is random;
an optically variable anti-counterfeiting element, wherein an operating principle of the optically variable anti-counterfeiting element is at least one of grating diffraction, reflection from a micro-reflective surface, surface plasmon resonance absorption, interference, color generation from a fixed height difference, sampling and amplification of micro-lens arrays, and Moire sampling and amplification of periodic micro-lens arrays;
the at least one attribute comprises shapes, colors, sizes, graphics, and orientations;
the colors comprise colors that appear at different observation angles.