Title:
セキュリティーデバイスおよびその製造方法
Document Type and Number:
Japanese Patent JP6571530
Kind Code:
B2
Abstract:
A security device is provided, including a first transparent layer having an optically variable effect generating relief structure formed in a surface thereof; a reflection enhancing layer extending over the relief structure and following the contour of the relief; and a second transparent layer extending over the reflection enhancing layer, the lateral extent of the second transparent layer being less than the whole area of the security device and corresponding to the lateral extent of the reflection enhancing layer. The first and/or second transparent layer includes one or more optically effective substances such that the appearance of the optically variable effect generated by the relief structure is different when viewed through the first transparent layer compared with when viewed through the second transparent layer, at least under illumination at a wavelength at which at least one of the optically effective substance(s) is visible.
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Inventors:
Brian holmes
Application Number:
JP2015555804A
Publication Date:
September 04, 2019
Filing Date:
February 03, 2014
Export Citation:
Assignee:
De La Ryu International Limited
International Classes:
B41M3/14; G03H1/02; B42D25/21; B42D25/328; B42D25/369; G02B5/18
Domestic Patent References:
| JP2005007624A | ||||
| JP5224606A | ||||
| JP2001315472A | ||||
| JP2010139910A | ||||
| JP8300801A | ||||
| JP2009294583A | ||||
| JP2012150271A | ||||
| JP2013011760A |
Foreign References:
| WO2010147185A1 | ||||
| US20120064303 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Yoshihiro Kobayashi
Satoshi Deno
Naoki Kobayashi
Takashi Ishida
Tetsuji Koga
Yoshihiro Kobayashi
Satoshi Deno
Naoki Kobayashi