SECURITY DEVICE, TRANSFER FOIL, AND SECURITY DEVICE-ATTACHED ARTICLE

Title:

SECURITY DEVICE, TRANSFER FOIL, AND SECURITY DEVICE-ATTACHED ARTICLE

Document Type and Number:

WIPO Patent Application WO/2019/221019

Kind Code:

A1

Abstract:

Provided is a security device that exhibits the effect of suppressing falsification. A security device (1) according to the present invention comprises: a forgery prevention structure (10) including a metal layer (13) with a plurality of slits (130), the forgery prevention structure (10) having a peak transmittance due to resonance in the metal layer (13); and an adhesive layer (20) provided on one main surface of the forgery prevention structure (10) and having a first part (21) in contact with a portion of the main surface and a second part (22) in contact with another portion of the main surface, wherein the first part (21) achieves lower adhesive strength with respect to the forgery prevention structure (10) than the second part (22).

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Inventors:

GOCHO SATOSHI (JP)
MUTA KEITARO (JP)

Application Number:

PCT/JP2019/018701

Publication Date:

November 21, 2019

Filing Date:

May 10, 2019

Export Citation:

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Assignee:

TOPPAN PRINTING CO LTD (JP)
GLORY KOGYO KK (JP)

International Classes:

G09F3/03; B42D25/30

Domestic Patent References:

WO2012094436A2

2012-07-12

Foreign References:

JP2016141065A	2016-08-08
JP2012173430A	2012-09-10
JP2010019913A	2010-01-28
JP2000309736A	2000-10-10
JPH06297888A	1994-10-25
JP2008254310A	2008-09-30
JP2016141065A	2016-07-19

Other References: