Title:
SECURITY DEVICES AND METHODS OF MANUFACTURE THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/053829
Kind Code:
A3
Abstract:
A security device is provided, comprising one or more surface relief structure(s), each formed of one or more cured material(s), the surface relief structure(s) being disposed on a substantially flat substrate and defining a plurality of raised elements spaced from one another, the raised elements corresponding to elements of an image, whereby the plurality of raised elements varies across the surface relief structure(s) so as to exhibit a multi-tonal version of the image. Methods of manufacturing such devices are also disclosed.
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Inventors:
GODFREY JOHN (GB)
LOCKE REBECCA (GB)
LOCKE REBECCA (GB)
Application Number:
PCT/GB2021/052364
Publication Date:
April 28, 2022
Filing Date:
September 10, 2021
Export Citation:
Assignee:
DE LA RUE INT LTD (GB)
International Classes:
B42D25/324; B41M3/14; B42D25/29; B42D25/328; B42D25/351; B42D25/36; B42D25/425; B42D25/46
Domestic Patent References:
| WO2008098753A1 | 2008-08-21 | |||
| WO2017009616A1 | 2017-01-19 | |||
| WO2008049533A2 | 2008-05-02 | |||
| WO2019153043A1 | 2019-08-15 | |||
| WO2016016638A1 | 2016-02-04 |
Attorney, Agent or Firm:
GILL JENNINGS & EVERY LLP (GB)
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