EP1281538A3 - Optically variable marking - Google Patents

Optically variable marking Download PDF

Info

Publication number
EP1281538A3
EP1281538A3 EP02012684A EP02012684A EP1281538A3 EP 1281538 A3 EP1281538 A3 EP 1281538A3 EP 02012684 A EP02012684 A EP 02012684A EP 02012684 A EP02012684 A EP 02012684A EP 1281538 A3 EP1281538 A3 EP 1281538A3
Authority
EP
European Patent Office
Prior art keywords
optically variable
layer
variable marking
marking
covered
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.)
Withdrawn
Application number
EP02012684A
Other languages
German (de)
French (fr)
Other versions
EP1281538A2 (en
Inventor
Matthias Dr. Kuntz
Reiner Delp
Rodney Riddle
John Patrick
Robert Hammond-Smith
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.)
Merck Patent GmbH
Original Assignee
Merck Patent GmbH
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 Merck Patent GmbH filed Critical Merck Patent GmbH
Priority to EP02012684A priority Critical patent/EP1281538A3/en
Publication of EP1281538A2 publication Critical patent/EP1281538A2/en
Publication of EP1281538A3 publication Critical patent/EP1281538A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/364—Liquid crystals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/333—Watermarks
    • B42D2033/26—

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Liquid Crystal (AREA)
  • Polarising Elements (AREA)

Abstract

The invention relates to an optically variable marking comprising a semiopaque substrate with a first surface that is covered with an optically variable layer that is for example a liquid crystal polymer layer or a layer comprising pearlescent pigments, and a second surface that is partially covered with a metal layer in the shape of a pattern, to methods of its preparation and to its use for decorative or security applications.
EP02012684A 2001-07-02 2002-06-07 Optically variable marking Withdrawn EP1281538A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02012684A EP1281538A3 (en) 2001-07-02 2002-06-07 Optically variable marking

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP01114895 2001-07-02
EP01114895 2001-07-02
EP02012684A EP1281538A3 (en) 2001-07-02 2002-06-07 Optically variable marking

Publications (2)

Publication Number Publication Date
EP1281538A2 EP1281538A2 (en) 2003-02-05
EP1281538A3 true EP1281538A3 (en) 2004-01-28

Family

ID=26076620

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02012684A Withdrawn EP1281538A3 (en) 2001-07-02 2002-06-07 Optically variable marking

Country Status (1)

Country Link
EP (1) EP1281538A3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1431050A3 (en) * 2002-12-19 2004-11-03 MERCK PATENT GmbH Process for laser marking of a liquid crystal film
GB0412979D0 (en) 2004-06-10 2004-07-14 Rue De Int Ltd Improvements in security devices
AU2006317160A1 (en) 2005-11-22 2007-05-31 Merck Patent Gmbh Process for a thermal transfer of a liquid crystal film using a transfer element
KR20130092985A (en) * 2010-04-20 2013-08-21 바스프 에스이 Polymerized films with line texture or fingerprint texture
EP3178660B2 (en) 2015-12-07 2022-12-28 Hueck Folien Ges.m.b.H Personalisable security element
PL430543A1 (en) 2019-07-10 2021-01-11 Polska Wytwórnia Papierów Wartościowych Spółka Akcyjna Data carrier and method of producing the data carrier

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0678400A1 (en) * 1994-03-25 1995-10-25 Giesecke & Devrient GmbH Identity card protected against unauthorised reproduction by a photocopier
US5678863A (en) * 1992-07-24 1997-10-21 Portals Limited High value documents

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3942663A1 (en) 1989-12-22 1991-06-27 Gao Ges Automation Org DATA CARRIER WITH A LIQUID CRYSTAL SECURITY ELEMENT
US5364557A (en) 1991-11-27 1994-11-15 Faris Sades M Aligned cholesteric liquid crystal inks
TW289095B (en) 1993-01-11 1996-10-21
KR100422497B1 (en) 1996-03-19 2004-05-17 메르크 파텐트 게젤샤프트 미트 베쉬랭크터 하프퉁 Liquid crystal display device
EP0994775A4 (en) 1997-07-09 2003-04-02 Reveo Inc Coloring media having improved brightness and color characteristics
EP0982605A1 (en) 1998-08-26 2000-03-01 MERCK PATENT GmbH Reflective film

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5678863A (en) * 1992-07-24 1997-10-21 Portals Limited High value documents
EP0678400A1 (en) * 1994-03-25 1995-10-25 Giesecke & Devrient GmbH Identity card protected against unauthorised reproduction by a photocopier

Also Published As

Publication number Publication date
EP1281538A2 (en) 2003-02-05

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