Title:
INFORMATION RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2018/173756
Kind Code:
A1
Abstract:
Provided is an information recording medium designed such that a read angle of embedded information is easily assessed. An information recording medium 30, which comprises a composite image including an image C1 and an image C2 formed on the image C1, is configured so that the image C1 and the image C2 are different patterns generated according to specific rules and so that the reflected light quantities differ due to respective observation angles, and the image C1 and/or the image C2 can be recognized in the composite image in accordance with the observation angle, and the composite image has an angle-specifying area formed using a material having the same reflected light quantity as the image C2.
Inventors:
AOYAMA YUKO (JP)
SATO JUN (JP)
YAMAKAWA TOSHIHISA (JP)
SATO JUN (JP)
YAMAKAWA TOSHIHISA (JP)
Application Number:
PCT/JP2018/008783
Publication Date:
September 27, 2018
Filing Date:
March 07, 2018
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD (JP)
International Classes:
B42D25/305; B41M3/14; B42D25/30
Domestic Patent References:
| WO2016075999A1 | 2016-05-19 |
Foreign References:
| JP2013111781A | 2013-06-10 | |||
| JP2003281482A | 2003-10-03 | |||
| US20040233463A1 | 2004-11-25 | |||
| JP2016093895A | 2016-05-26 |
Other References:
See also references of EP 3603989A4
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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