Method for manufacturing display body, display body, and method for verifying authenticity of display body
AssigneeToppan Inc.
InventorsSoko Koda, Akihito Kagotani
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Abstract
A display body includes a base material having a first region, a second region, and a third region. In the display body, the first region is formed with a code or an image of identification information, and the second region is formed with a hidden code containing information obtained by encoding at least a part of the identification information. An encrypted ciphertext is recorded in the third region, and the ciphertext is generated from at least one of the code of the identification information and the hidden code.
Claims16
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.
A method for manufacturing a display body, the method comprising:
- acquiring a code of identification information and a hidden code;
- encrypting at least one of the code of the identification information and the hidden code and generating a ciphertext;
- forming at least one of the code and an image of the identification information on a base material by at least one of thermal transfer and laser engraving;
- forming the hidden code on the base material by transfer or security printing;
- and
- recording the ciphertext on the base material by at least one of 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.
A display body comprising:
- a base material having a first region, a second region, and a third region,
- wherein at least one of a code and an image of identification information is formed in the first region,
- a hidden code containing information obtained by encoding at least a part of the identification information is formed in the second region,
- an encrypted ciphertext is recorded in the third region, and
- the encrypted ciphertext is generated from at least one of the code of the identification information and the hidden code, wherein
- at least one of a plurality of information elements constituting the hidden code or the encrypted ciphertext has a hologram structure,
- a plurality of hologram structures are provided,
- each of reproduction images of the plurality of hologram structures is located at a position separated from a surface of the base material, and
- a position of at least one reproduction image of the plurality of hologram structures in a direction perpendicular to the base material is different from positions of other reproduction images in the direction perpendicular to the base material.
Dependencies are inferred from the claim text.