Title:
LAMINATED BODY, CARD, AND CASE
Document Type and Number:
WIPO Patent Application WO/2022/138766
Kind Code:
A1
Abstract:
Provided is a laminated body capable of improving forgery prevention properties. This laminated body comprises: a substrate; an intermediate layer provided on the substrate and having a housing section; a recording medium provided in the housing section; and an overlay layer provided on the intermediate layer. The housing section is provided at a portion on the surface of the intermediate layer; and the housing section is a through hole that penetrates through the intermediate layer in the thickness direction thereof, or a recess that is indented into the intermediate layer in the thickness direction thereof. The recording medium comprises a color-developing layer containing: a coloring compound having electron-donating properties; a developer having electron-accepting properties; and a matrix resin. The substrate, the intermediate layer, and the overlay layer all contain the same type of resin material. The substrate and the intermediate layer are fused together; and the intermediate layer and the overlay layer are fused together.
Inventors:
WATANABE MAHO (JP)
AMAGO HIROHISA (JP)
KAINO YURIKO (JP)
AMAGO HIROHISA (JP)
KAINO YURIKO (JP)
Application Number:
PCT/JP2021/047702
Publication Date:
June 30, 2022
Filing Date:
December 22, 2021
Export Citation:
Assignee:
SONY GROUP CORP (JP)
International Classes:
B32B27/00; B32B3/18; B32B7/12; B41M5/40; B41M5/44; B41M5/46; B42D25/23; B42D25/435
Domestic Patent References:
| WO2020003868A1 | 2020-01-02 |
Foreign References:
| JP2003118233A | 2003-04-23 | |||
| JP2005289401A | 2005-10-20 | |||
| JP2005088557A | 2005-04-07 | |||
| JPH0788974A | 1995-04-04 | |||
| JP2019038141A | 2019-03-14 |
Attorney, Agent or Firm:
SUGIURA PATENT OFFICE et al. (JP)
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