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EP4338854A3 - Processes for producing optical effects layers - Google Patents

Processes for producing optical effects layersDownload PDF

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Publication number
EP4338854A3
EP4338854A3EP23218609.8AEP23218609AEP4338854A3EP 4338854 A3EP4338854 A3EP 4338854A3EP 23218609 AEP23218609 AEP 23218609AEP 4338854 A3EP4338854 A3EP 4338854A3
Authority
EP
European Patent Office
Prior art keywords
producing optical
processes
optical effects
motif
effects layers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23218609.8A
Other languages
German (de)
French (fr)
Other versions
EP4338854A2 (en
Inventor
Nathalie Benninger
Gisèle BAUDIN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SICPA Holding SA
Original Assignee
SICPA Holding SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SICPA Holding SAfiledCriticalSICPA Holding SA
Priority to EP23218609.8ApriorityCriticalpatent/EP4338854A3/en
Publication of EP4338854A2publicationCriticalpatent/EP4338854A2/en
Priority to PCT/EP2024/083920prioritypatent/WO2025131613A1/en
Publication of EP4338854A3publicationCriticalpatent/EP4338854A3/en
Pendinglegal-statusCriticalCurrent

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Abstract

The invention relates to the field of the protection of security documents such as for example banknotes and identity documents against counterfeit and illegal reproduction. In particular, the present invention provides processes for producing optical effect layers (OELs) comprising at least a first motif and a second motif, each of said motifs independently comprising platelet-shaped magnetic or magnetizable pigment particles.
EP23218609.8A2023-12-202023-12-20Processes for producing optical effects layersPendingEP4338854A3 (en)

Priority Applications (2)

Application NumberPriority DateFiling DateTitle
EP23218609.8AEP4338854A3 (en)2023-12-202023-12-20Processes for producing optical effects layers
PCT/EP2024/083920WO2025131613A1 (en)2023-12-202024-11-28Processes for producing optical effects layers

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
EP23218609.8AEP4338854A3 (en)2023-12-202023-12-20Processes for producing optical effects layers

Publications (2)

Publication NumberPublication Date
EP4338854A2 EP4338854A2 (en)2024-03-20
EP4338854A3true EP4338854A3 (en)2024-12-25

Family

ID=89224203

Family Applications (1)

Application NumberTitlePriority DateFiling Date
EP23218609.8APendingEP4338854A3 (en)2023-12-202023-12-20Processes for producing optical effects layers

Country Status (2)

CountryLink
EP (1)EP4338854A3 (en)
WO (1)WO2025131613A1 (en)

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Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
WO2012104098A1 (en)*2011-02-042012-08-09Sicpa Holding SaDevice displaying a dynamic visual motion effect and method for producing same
WO2022049024A1 (en)*2020-09-022022-03-10Sicpa Holding SaSecurity documents or articles comprising optical effect layers comprising magnetic or magnetizable pigment particles and methods for producing said optical effect layers

Also Published As

Publication numberPublication date
WO2025131613A1 (en)2025-06-26
EP4338854A2 (en)2024-03-20

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