Title:
METHOD FOR MANUFACTURING DISPLAY BODY, DISPLAY BODY, AND METHOD FOR VERIFYING AUTHENTICITY OF DISPLAY BODY
Document Type and Number:
WIPO Patent Application WO/2021/112143
Kind Code:
A1
Abstract:
This display body is provided with a base material having a first region, a second region, and a third region. In the display body, a code of identification information and an image are formed in the first region, a hidden code including information obtained by coding at least part of the identification information is formed in the second region, and an encrypted ciphertext is recorded in the third region. The ciphertext is generated from the code of the identification information and/or the hidden code.
Inventors:
KODA SOKO (JP)
KAGOTANI AKIHITO (JP)
KAGOTANI AKIHITO (JP)
Application Number:
PCT/JP2020/044934
Publication Date:
June 10, 2021
Filing Date:
December 02, 2020
Export Citation:
Assignee:
TOPPAN PRINTING CO LTD (JP)
International Classes:
G03H1/02; B42D25/328; B42D25/40; G02B5/32
Domestic Patent References:
| WO2017200030A1 | 2017-11-23 | |||
| WO2019176967A1 | 2019-09-19 | |||
| WO2017209113A1 | 2017-12-07 |
Foreign References:
| JPH0899490A | 1996-04-16 | |||
| JP2013020084A | 2013-01-31 | |||
| JP2001315472A | 2001-11-13 | |||
| US20110298205A1 | 2011-12-08 | |||
| JP2019218137A | 2019-12-26 | |||
| JPH0667592A | 1994-03-11 | |||
| JP3198324B2 | 2001-08-13 | |||
| JP4677683B2 | 2011-04-27 | |||
| JP2017020049W | 2017-05-30 |
Other References:
See also references of EP 4071556A4
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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