GB2414962B - Improvements in security devices - Google Patents

Improvements in security devices

Info

Publication number
GB2414962B
GB2414962B GB0511753A GB0511753A GB2414962B GB 2414962 B GB2414962 B GB 2414962B GB 0511753 A GB0511753 A GB 0511753A GB 0511753 A GB0511753 A GB 0511753A GB 2414962 B GB2414962 B GB 2414962B
Authority
GB
United Kingdom
Prior art keywords
layers
activation temperature
soft segment
crystallisable
opaque
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
GB0511753A
Other versions
GB0511753D0 (en
GB2414962A (en
Inventor
John Philip Winchcombe
Christopher John Eastell
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.)
De la Rue International Ltd
Original Assignee
De la Rue International Ltd
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 De la Rue International Ltd filed Critical De la Rue International Ltd
Publication of GB0511753D0 publication Critical patent/GB0511753D0/en
Publication of GB2414962A publication Critical patent/GB2414962A/en
Application granted granted Critical
Publication of GB2414962B publication Critical patent/GB2414962B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/42—Ribbons or strips
    • 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
    • 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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B42D15/0013—
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/48—Elements suited for physical verification, e.g. by irradiation
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
    • G07D7/124—
    • B42D2033/26—
    • B42D2033/32—
    • B42D2037/06—

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Credit Cards Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Forging (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Thermistors And Varistors (AREA)
  • Road Signs Or Road Markings (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

Security device 10 has layers 12,15 of a copolymer which switches from opaque to transparent at a specified activation temperature. These layers comprise a hard segment and a crystallisable soft segment or at least one soft segment which is crosslinked and contains a crystallisable soft segment. The device may include demetallised indicia 14 in metal layer 13. The layers 12,15 are opaque at temperatures below the activation temperature (preferably 35-37 {C) and switch to become transparent when warmed above it, revealing the indicia 14. The polymers may be oligomers. Adhesive layers 16 bond the device as a thread 17 on to a substrate from which a secure document 11 is made. Alternatively, the device may overlay an optically variable feature (30, figure 13) which becomes visible through the polymeric film 12 above the activation temperature.
GB0511753A 2004-06-10 2005-06-09 Improvements in security devices Expired - Fee Related GB2414962B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0412981.3A GB0412981D0 (en) 2004-06-10 2004-06-10 Improvements in security devices

Publications (3)

Publication Number Publication Date
GB0511753D0 GB0511753D0 (en) 2005-07-20
GB2414962A GB2414962A (en) 2005-12-14
GB2414962B true GB2414962B (en) 2006-05-17

Family

ID=32732269

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0412981.3A Ceased GB0412981D0 (en) 2004-06-10 2004-06-10 Improvements in security devices
GB0511753A Expired - Fee Related GB2414962B (en) 2004-06-10 2005-06-09 Improvements in security devices

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0412981.3A Ceased GB0412981D0 (en) 2004-06-10 2004-06-10 Improvements in security devices

Country Status (8)

Country Link
EP (1) EP1753915B1 (en)
AT (1) ATE380268T1 (en)
AU (1) AU2005252433A1 (en)
DE (1) DE602005003666T2 (en)
ES (1) ES2297722T3 (en)
GB (2) GB0412981D0 (en)
PL (1) PL1753915T3 (en)
WO (1) WO2005121450A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006051524A1 (en) * 2006-10-27 2008-04-30 Giesecke & Devrient Gmbh Safety unit for safety document e.g. bank note, has visually inspectable safety feature placing automatically reversible color imprint relative to information pattern in recess, such that pattern is disguised without external stimulus
DE102007005414A1 (en) 2007-01-30 2008-08-07 Ovd Kinegram Ag Security element for securing value documents
EP2119571A1 (en) * 2008-05-15 2009-11-18 Hueck Folien Ges.m.b.H. Tactile safety element
JP6309953B2 (en) * 2012-08-23 2018-04-11 コベストロ、ドイチュラント、アクチエンゲゼルシャフトＣｏｖｅｓｔｒｏ Ｄｅｕｔｓｃｈｌａｎｄ Ａｇ Confidential and / or valuable documents including windows that can be visually altered by holograms
US8815054B2 (en) 2012-10-05 2014-08-26 The Procter & Gamble Company Methods for making fibrous paper structures utilizing waterborne shape memory polymers
GB2523994B (en) * 2014-03-06 2017-08-30 De La Rue Int Ltd Method of forming a security document
CN109603941B (en) * 2019-01-11 2021-08-03 京东方科技集团股份有限公司 Micro-fluidic chip system and micro-fluidic chip

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2347646A (en) * 1999-03-12 2000-09-13 Rue De Int Ltd Security element comprising thermochromic coating and optically variable device eg hologram
WO2001005603A1 (en) * 1999-07-16 2001-01-25 Jury Viktorovich Zhvakoljuk Method for protecting information carriers against counterfeiting
WO2001016426A1 (en) * 1999-08-31 2001-03-08 Giesecke & Devrient Gmbh Safety element and a valuable object

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1095286A (en) 1963-07-08 1967-12-13 Portals Ltd Security device for use in security papers
GB1552853A (en) 1976-09-24 1979-09-19 Bank Of England Authentication devices
GB1604463A (en) 1976-09-24 1981-12-09 Bank Of England Security devices
IN157644B (en) 1981-02-19 1986-05-10 Portals Ltd
FR2698390B1 (en) 1992-11-20 1994-12-23 Arjo Wiggins Sa Security document authenticated by piezooptic effect.
GB2274428B (en) 1993-01-20 1996-08-21 Portals Security threads
AU758800B2 (en) * 1998-02-23 2003-03-27 Gkss-Forschungszentrum Geesthacht Gmbh Shape memory polymers
DE19907697A1 (en) 1999-02-23 2000-08-24 Giesecke & Devrient Gmbh Security element with optically variable material for documents of value additionally comprises at least one machine readable distinguishing material which does not impair the effect of the optically variable material
CN1589457B (en) * 2001-12-21 2010-05-12 德国捷德有限公司 Sheet material and devices and methods for the production and treatment of the sheet material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2347646A (en) * 1999-03-12 2000-09-13 Rue De Int Ltd Security element comprising thermochromic coating and optically variable device eg hologram
WO2001005603A1 (en) * 1999-07-16 2001-01-25 Jury Viktorovich Zhvakoljuk Method for protecting information carriers against counterfeiting
WO2001016426A1 (en) * 1999-08-31 2001-03-08 Giesecke & Devrient Gmbh Safety element and a valuable object

Also Published As

Publication number Publication date
AU2005252433A1 (en) 2005-12-22
GB0412981D0 (en) 2004-07-14
DE602005003666T2 (en) 2008-11-13
ATE380268T1 (en) 2007-12-15
WO2005121450A1 (en) 2005-12-22
DE602005003666D1 (en) 2008-01-17
EP1753915A1 (en) 2007-02-21
GB0511753D0 (en) 2005-07-20
ES2297722T3 (en) 2008-05-01
EP1753915B1 (en) 2007-12-05
PL1753915T3 (en) 2008-05-30
GB2414962A (en) 2005-12-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20090609