Title:
複写防止カード
Document Type and Number:
Japanese Patent JP7347180
Kind Code:
B2
Abstract:
To provide a copy prevention card that enables highly accurate reading of code information and makes it difficult for a copying machine to copy the code information.SOLUTION: A copy prevention card 10 is a card formed by stacking an over-sheet 13 on an outer surface side of a core sheet 11. Code information 31 is formed on an outer surface side of the over-sheet 13 by an infrared absorbing ink. On the outer surface side of the core sheet 11, a colored layer 32 colored with a predetermined color is formed at a position where at least a part overlaps with the code information 31, in a surface direction of the card. The colored layer 32 is formed by an infrared transmissive ink.SELECTED DRAWING: Figure 1
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Inventors:
Maki Sakakibara
Masaya Kobayashi
Shinya Masuda
Masaya Kobayashi
Shinya Masuda
Application Number:
JP2019221874A
Publication Date:
September 20, 2023
Filing Date:
December 09, 2019
Export Citation:
Assignee:
Dai Nippon Printing Co.,Ltd.
International Classes:
B42D25/30; G06K19/06; B42D25/305; B42D25/382
Domestic Patent References:
| JP8052930A | ||||
| JP2013001077A | ||||
| JP2015110308A | ||||
| JP1128877A | ||||
| JP2013033447A | ||||
| JP2019006061A | ||||
| JP2008080610A | ||||
| JP2008230229A | ||||
| JP6297889A |
Attorney, Agent or Firm:
Hiromi Fujimasu
Keiko Fukamachi
Hideo Ito
Naoki Goto
Hideyuki Tateishi
Keiko Fukamachi
Hideo Ito
Naoki Goto
Hideyuki Tateishi
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