Invention Grant
- Patent Title: Coloring forgery prevention structure and coloring forgery prevention medium
- Patent Title (中): 着色防伪结构和着色防伪介质
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Application No.: US14087838Application Date: 2013-11-22
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Publication No.: US09354364B2Publication Date: 2016-05-31
- Inventor: Kazuhiro Yashiki
- Applicant: TOPPAN PRINTING CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: TOPPAN PRINTING CO., LTD.
- Current Assignee: TOPPAN PRINTING CO., LTD.
- Current Assignee Address: JP Tokyo
- Priority: JP2011-116827 20110525
- Main IPC: B42D25/445
- IPC: B42D25/445 ; B42D25/324 ; B42D25/373 ; G02B5/18 ; G03H1/00 ; B42D25/29 ; G03H1/02 ; B42D25/45 ; B42D25/328

Abstract:
A forgery prevention structure configured by layering at least a relief forming layer, a first reflection layer, a functional thin film layer, and a second reflection layer, in this order, wherein the relief forming layer has, on one side, a relief structure which has an effect of diffracting, scattering, absorbing, and polarizing/separating at least a part of a wave-length range of visible light; the first reflection layer and the functional thin film layer are provided along a whole surface of an uneven area of the relief structure; the second reflection layer is provided in an arbitrary area which covers a part of the uneven area of the relief structure.
Public/Granted literature
- US20140077487A1 COLORING FORGERY PREVENTION STRUCTURE AND COLORING FORGERY PREVENTION MEDIUM Public/Granted day:2014-03-20
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