CA2032587C - Data carrier having a liquid crystal security element - Google Patents

Data carrier having a liquid crystal security element

Info

Publication number
CA2032587C
CA2032587C CA002032587A CA2032587A CA2032587C CA 2032587 C CA2032587 C CA 2032587C CA 002032587 A CA002032587 A CA 002032587A CA 2032587 A CA2032587 A CA 2032587A CA 2032587 C CA2032587 C CA 2032587C
Authority
CA
Canada
Prior art keywords
liquid crystal
data carrier
security element
carrier
film
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.)
Expired - Fee Related
Application number
CA002032587A
Other languages
English (en)
French (fr)
Other versions
CA2032587A1 (en
Inventor
Christoph Heckenkamp
Gerhard Schwenk
Jurgen Moll
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.)
GAO Gesellschaft fuer Automation und Organisation mbH
Original Assignee
GAO Gesellschaft fuer Automation und Organisation mbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6396250&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2032587(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by GAO Gesellschaft fuer Automation und Organisation mbH filed Critical GAO Gesellschaft fuer Automation und Organisation mbH
Publication of CA2032587A1 publication Critical patent/CA2032587A1/en
Application granted granted Critical
Publication of CA2032587C publication Critical patent/CA2032587C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/086—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means by passive credit-cards adapted therefor, e.g. constructive particularities to avoid counterfeiting, e.g. by inclusion of a physical or chemical security-layer
    • 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
    • B42D25/355—Security threads
    • B42D2033/26—

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Credit Cards Or The Like (AREA)
  • Liquid Crystal (AREA)
  • Burglar Alarm Systems (AREA)
  • Laminated Bodies (AREA)
CA002032587A 1989-12-22 1990-12-18 Data carrier having a liquid crystal security element Expired - Fee Related CA2032587C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3942663.7 1989-12-22
DE3942663A DE3942663A1 (de) 1989-12-22 1989-12-22 Datentraeger mit einem fluessigkristall-sicherheitselement

Publications (2)

Publication Number Publication Date
CA2032587A1 CA2032587A1 (en) 1991-06-23
CA2032587C true CA2032587C (en) 1996-07-09

Family

ID=6396250

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002032587A Expired - Fee Related CA2032587C (en) 1989-12-22 1990-12-18 Data carrier having a liquid crystal security element

Country Status (6)

Country Link
EP (1) EP0435029B2 (es)
JP (1) JP3244278B2 (es)
AT (1) ATE126135T1 (es)
CA (1) CA2032587C (es)
DE (2) DE3942663A1 (es)
ES (1) ES2075871T5 (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7488002B2 (en) 1998-07-02 2009-02-10 Securency Pty Limited Security and/or value document
WO2017137719A1 (en) * 2016-02-11 2017-08-17 De La Rue International Limited Improvements in secuirty devices

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GB9106128D0 (en) * 1991-03-22 1991-05-08 Amblehurst Ltd Article
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FR2698390B1 (fr) * 1992-11-20 1994-12-23 Arjo Wiggins Sa Document de sécurité authentifiable par effet piezooptique.
GB2276883A (en) * 1993-04-05 1994-10-12 Central Research Lab Ltd Optical material containing a liquid crystal
GB2283455B (en) * 1993-11-03 1997-01-15 Willett Int Ltd Method for authenticating or confirming the integrity of a document or other ing and articles for use in the method
US5629055A (en) * 1994-02-14 1997-05-13 Pulp And Paper Research Institute Of Canada Solidified liquid crystals of cellulose with optically variable properties
DE4416191A1 (de) * 1994-05-06 1995-11-09 Consortium Elektrochem Ind Interferenzpigmente aus in cholesterischer Anordnung fixierten Molekülen sowie deren Verwendung
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US5903330A (en) * 1995-10-31 1999-05-11 Rolic Ag Optical component with plural orientation layers on the same substrate wherein the surfaces of the orientation layers have different patterns and direction
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DE19639229A1 (de) * 1996-09-24 1997-06-05 Wacker Chemie Gmbh Zusammensetzung enthaltend Pigmente mit vom Betrachtungswinkel abhängiger Farbigkeit
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EP0911758B1 (en) * 1997-07-29 2005-11-30 Nhk Spring Co.Ltd. Optical identification system using cholesteric liquid crystals
DE19735628C2 (de) * 1997-08-18 1999-10-14 Johannes Puff Verfahren zur Fälschungssicherung eines nicht personengebundenen Zugangsberechtigungsmittels
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DE19941295A1 (de) † 1999-08-31 2001-03-01 Giesecke & Devrient Gmbh Sicherheitselement
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DE10007916A1 (de) 2000-02-21 2001-08-23 Giesecke & Devrient Gmbh Mehrschichtige, laminierte Karte mit eingelagertem, Reliefstrukturen aufweisenden Sicherheitselement
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7488002B2 (en) 1998-07-02 2009-02-10 Securency Pty Limited Security and/or value document
WO2017137719A1 (en) * 2016-02-11 2017-08-17 De La Rue International Limited Improvements in secuirty devices

Also Published As

Publication number Publication date
ES2075871T5 (es) 2003-07-16
EP0435029A2 (de) 1991-07-03
JPH04144796A (ja) 1992-05-19
DE59009504D1 (de) 1995-09-14
ES2075871T3 (es) 1995-10-16
EP0435029B1 (de) 1995-08-09
EP0435029A3 (en) 1991-09-18
ATE126135T1 (de) 1995-08-15
EP0435029B2 (de) 2003-01-02
CA2032587A1 (en) 1991-06-23
JP3244278B2 (ja) 2002-01-07
DE3942663A1 (de) 1991-06-27

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