EP 3529084 B1 20210106 - METHOD FOR PRODUCING A SECURITY ELEMENT
Title (en)
METHOD FOR PRODUCING A SECURITY ELEMENT
Title (de)
VERFAHREN ZUM HERSTELLEN EINES SICHERHEITSELEMENTS
Title (fr)
PROCÉDÉ DE FABRICATION D'UN ÉLÉMENT DE SÉCURITÉ
Publication
Application
Priority
- DE 102016012625 A 20161021
- EP 2017001226 W 20171019
Abstract (en)
[origin: WO2018072881A2] The invention relates to a method for producing a security element (12) comprising a flip image, the method comprising the following steps: providing a substrate (14) having a region with a dye that is sensitive to laser radiation. forming a plurality of microstructures (26) on the substrate (14), each microstructure (26) being formed such that it focuses radiation incident on a front face of the substrate (14) onto said region; and irradiating the microstructures (26) with a set (28) of parallel laser beams at a first angle to the substrate (14), the individual laser beams of the set (28) being arranged such that a structure of a first flip image (18) is created, which image can be discernible from the front face at a viewing angle associated with the first angle (α); wherein the dye that is sensitive to laser radiation changes its colour by irradiation with a specific laser radiation; and wherein the first flip image (18) displays a colour effect caused by the colour change.
IPC 8 full level
B42D 25/324 (2014.01); B42D 25/36 (2014.01); B42D 25/378 (2014.01); B42D 25/41 (2014.01)
CPC (source: EP)
B42D 25/324 (2014.10); B42D 25/36 (2014.10); B42D 25/378 (2014.10); B42D 25/41 (2014.10)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102016012625 A1 20180426; CN 109562635 A 20190402; CN 109562635 B 20210720; EP 3529084 A2 20190828; EP 3529084 B1 20210106; WO 2018072881 A2 20180426; WO 2018072881 A3 20180614
DOCDB simple family (application)
DE 102016012625 A 20161021; CN 201780044412 A 20171019; EP 17791574 A 20171019; EP 2017001226 W 20171019