US 12,288,120 B2
Method for manufacturing display body, display body, and method for verifying authenticity of display body
Soko Koda, Tokyo (JP); and Akihito Kagotani, Tokyo (JP)
Assigned to TOPPAN INC., Tokyo (JP)
Filed by TOPPAN INC., Tokyo (JP)
Filed on May 27, 2022, as Appl. No. 17/826,541.
Application 17/826,541 is a continuation of application No. PCT/JP2020/044934, filed on Dec. 2, 2020.
Claims priority of application No. 2019-218137 (JP), filed on Dec. 2, 2019.
Prior Publication US 2022/0292326 A1, Sep. 15, 2022
Int. Cl. G06K 19/16 (2006.01); B42D 25/23 (2014.01); B42D 25/305 (2014.01); B42D 25/328 (2014.01); B42D 25/41 (2014.01); B42D 25/455 (2014.01); G06K 7/14 (2006.01)
CPC G06K 19/16 (2013.01) [B42D 25/23 (2014.10); B42D 25/305 (2014.10); B42D 25/328 (2014.10); B42D 25/41 (2014.10); B42D 25/455 (2014.10); G06K 7/1408 (2013.01); G06K 7/1447 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for manufacturing a display body including a base material, the method comprising:
generating a hidden code from identification information;
encrypting the hidden code and generating a ciphertext;
forming at least one of a code and an image of the identification information on the base material by at least one of thermal transfer and laser engraving;
forming the hidden code on the base material by thermal transfer or security printing; and
recording the ciphertext on the base material by at least one of thermal transfer and laser engraving, wherein
the hidden code is formed by applying external energy to a hologram transfer foil having a hologram structure and thermally transferring a hologram film to the base material,
a plurality of hologram structures are transferred, and
a position of at least one reproduction image of the hologram structure in a direction perpendicular to the base material is different from positions of other reproduction images in the direction perpendicular to the base material.