EP0435029A3 - Data carrier with a liquid crystal security element - Google Patents

Data carrier with a liquid crystal security element Download PDF

Info

Publication number
EP0435029A3
EP0435029A3 EP19900123341 EP90123341A EP0435029A3 EP 0435029 A3 EP0435029 A3 EP 0435029A3 EP 19900123341 EP19900123341 EP 19900123341 EP 90123341 A EP90123341 A EP 90123341A EP 0435029 A3 EP0435029 A3 EP 0435029A3
Authority
EP
European Patent Office
Prior art keywords
liquid crystal
security
security element
data carrier
plastic
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.)
Granted
Application number
EP19900123341
Other languages
German (de)
Other versions
EP0435029B1 (en
EP0435029A2 (en
EP0435029B2 (en
Inventor
Christoph Heckenkamp
Gerhard Schwenk
Juergen 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=EP0435029(A3) "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 EP0435029A2 publication Critical patent/EP0435029A2/en
Publication of EP0435029A3 publication Critical patent/EP0435029A3/en
Publication of EP0435029B1 publication Critical patent/EP0435029B1/en
Application granted granted Critical
Publication of EP0435029B2 publication Critical patent/EP0435029B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
  • Laminated Bodies (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

Data carriers protected against forgery attempts using colour copiers, such as an identity card or a security, which include an optically variable security element of a liquid crystal material. This security element, such as for example a security thread, has a layer similar to plastic of a liquid crystal polymer, which exhibits a pronounced iridescence at room temperature. The plastic-like properties of the liquid crystal polymers permit easy processing to form a semi-finished or finished product, so that very diverse types of security elements can be produced. <IMAGE>
EP90123341A 1989-12-22 1990-12-05 Data carrier with a liquid crystal security element Expired - Lifetime EP0435029B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3942663 1989-12-22
DE3942663A DE3942663A1 (en) 1989-12-22 1989-12-22 DATA CARRIER WITH A LIQUID CRYSTAL SECURITY ELEMENT

Publications (4)

Publication Number Publication Date
EP0435029A2 EP0435029A2 (en) 1991-07-03
EP0435029A3 true EP0435029A3 (en) 1991-09-18
EP0435029B1 EP0435029B1 (en) 1995-08-09
EP0435029B2 EP0435029B2 (en) 2003-01-02

Family

ID=6396250

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90123341A Expired - Lifetime EP0435029B2 (en) 1989-12-22 1990-12-05 Data carrier with a liquid crystal security element

Country Status (6)

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

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DE4416191A1 (en) * 1994-05-06 1995-11-09 Consortium Elektrochem Ind Interference pigments from molecules fixed in a cholesteric arrangement and their use
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DE19639229A1 (en) * 1996-09-24 1997-06-05 Wacker Chemie Gmbh Composition with matrix containing pigment with angle-dependent colour in different matrix
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DE19645084A1 (en) * 1996-11-01 1998-05-07 Austria Card Gmbh Identification card with additional security features and processes for their production
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DE69832574T2 (en) * 1997-07-29 2006-06-14 Nhk Spring Co Ltd Optical identification system with cholesteric liquid crystals
DE19735628C2 (en) * 1997-08-18 1999-10-14 Johannes Puff Procedure to prevent counterfeiting of a non-personal means of access authorization
DE19737618A1 (en) 1997-08-28 1999-03-04 Consortium Elektrochem Ind Machine-detectable security marking with increased protection against forgery, production of the security marking and security system comprising this security marking
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DE19743722A1 (en) * 1997-10-02 1999-04-08 Wacker Chemie Gmbh Polysiloxanes with heterocyclic functions, their production and use
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CN1608217A (en) * 1999-05-24 2005-04-20 凸版印刷株式会社 Laminated composite, information recording medium, and member of imparting forgery-preventing characteristic
DE19941295A1 (en) † 1999-08-31 2001-03-01 Giesecke & Devrient Gmbh Security element
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DE10008851A1 (en) † 2000-02-25 2001-08-30 Giesecke & Devrient Gmbh Manufacturing laser-writeable data media involves applying transparent, optically variable layer then producing marking through optically variable layer by action of laser beam
JP2002040252A (en) * 2000-07-27 2002-02-06 Shiseido Co Ltd Optical sheet containing cholesteric liquid crystal layer, information recording body using the same, method for recording information and method for discriminating information
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JP4565591B2 (en) * 2000-11-29 2010-10-20 トッパン・フォームズ株式会社 Card holding cholesteric liquid crystalline compounds
EP1227347A1 (en) * 2001-01-29 2002-07-31 Rolic AG Optical device and method for manufacturing same
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JP2003337218A (en) * 2002-05-21 2003-11-28 Nippon Oil Corp Laminated body for transfer
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Citations (1)

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Also Published As

Publication number Publication date
EP0435029B1 (en) 1995-08-09
CA2032587C (en) 1996-07-09
EP0435029A2 (en) 1991-07-03
ES2075871T3 (en) 1995-10-16
JPH04144796A (en) 1992-05-19
EP0435029B2 (en) 2003-01-02
DE3942663A1 (en) 1991-06-27
DE59009504D1 (en) 1995-09-14
ES2075871T5 (en) 2003-07-16
ATE126135T1 (en) 1995-08-15
CA2032587A1 (en) 1991-06-23
JP3244278B2 (en) 2002-01-07

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