GB2328180B - Security device - Google Patents

Security device

Info

Publication number
GB2328180B
GB2328180B GB9717284A GB9717284A GB2328180B GB 2328180 B GB2328180 B GB 2328180B GB 9717284 A GB9717284 A GB 9717284A GB 9717284 A GB9717284 A GB 9717284A GB 2328180 B GB2328180 B GB 2328180B
Authority
GB
United Kingdom
Prior art keywords
security device
security
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
GB9717284A
Other versions
GB2328180A (en
GB9717284D0 (en
Inventor
David William Thomas
Anthony David Harman
Timothy Andrew Large
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
Thomas De la Rue 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, Thomas De la Rue Ltd filed Critical De la Rue International Ltd
Priority to GB9717284A priority Critical patent/GB2328180B/en
Publication of GB9717284D0 publication Critical patent/GB9717284D0/en
Publication of GB2328180A publication Critical patent/GB2328180A/en
Application granted granted Critical
Publication of GB2328180B publication Critical patent/GB2328180B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • 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
    • 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
    • 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
    • G07D7/06—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 wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/1205—Testing spectral properties
    • 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
    • B42D25/378—Special inks
    • B42D25/391—Special inks absorbing or reflecting polarised light
GB9717284A 1997-08-14 1997-08-14 Security device Expired - Fee Related GB2328180B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9717284A GB2328180B (en) 1997-08-14 1997-08-14 Security device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9717284A GB2328180B (en) 1997-08-14 1997-08-14 Security device

Publications (3)

Publication Number Publication Date
GB9717284D0 GB9717284D0 (en) 1997-10-22
GB2328180A GB2328180A (en) 1999-02-17
GB2328180B true GB2328180B (en) 2001-08-01

Family

ID=10817509

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9717284A Expired - Fee Related GB2328180B (en) 1997-08-14 1997-08-14 Security device

Country Status (1)

Country Link
GB (1) GB2328180B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1227347A1 (en) * 2001-01-29 2002-07-31 Rolic AG Optical device and method for manufacturing same
CA2445080A1 (en) * 2001-04-24 2002-10-31 Merck Patent Gesellschaft Mit Beschraenkter Haftung Birefringent marking
AUPR627201A0 (en) * 2001-07-09 2001-08-02 Commonwealth Scientific And Industrial Research Organisation An optically variable device and a method of producing an optically variable device
DE60336184D1 (en) 2002-02-06 2011-04-14 Merck Patent Gmbh Birefringent film and its use
DE10328744A1 (en) * 2003-06-25 2005-01-13 Metronic Ag Print carrier with optically birefringent layer
DE102004021246A1 (en) 2004-04-30 2005-11-24 Giesecke & Devrient Gmbh Security element and method for its production
EP1875280B1 (en) 2005-03-15 2010-03-03 A.T.B. Latent Export Import Ltd. Method of producing polymer layer with latent polarized image
JP4959304B2 (en) * 2006-11-22 2012-06-20 日本発條株式会社 Identification medium, identification method, and identification apparatus
GB0807668D0 (en) * 2008-04-28 2008-06-04 Innovia Films Ltd Method of authenticating a polymer film
AU2013224649B2 (en) * 2008-04-28 2014-11-27 Innovia Films Limited Method of authenticating a polymer film
JP5380007B2 (en) * 2008-06-16 2014-01-08 富士フイルム株式会社 Anti-counterfeit media
JP5543097B2 (en) * 2008-11-07 2014-07-09 富士フイルム株式会社 Anti-counterfeit foil
EP2376956A4 (en) 2008-12-22 2017-11-01 3M Innovative Properties Company Internally patterned multilayer optical films using spatially selective birefringence reduction
EA017394B1 (en) 2010-03-09 2012-12-28 Ооо "Центр Компьютерной Голографии" Microoptical system for forming visual images
JP5412350B2 (en) * 2010-03-26 2014-02-12 富士フイルム株式会社 Article with birefringence pattern
GB2483638A (en) * 2010-09-10 2012-03-21 Innovia Films Sarl Authentication of articles having a polymeric film by measuring thickness of film or layer within film by white light interferometry and/or by birefringence
GB2506936A (en) * 2012-10-15 2014-04-16 Innovia Films Ltd Birefringence authentication apparatus and method
CN103839325B (en) * 2014-03-11 2016-08-17 威海华菱光电股份有限公司 Image detection device
GB2540739A (en) * 2015-07-13 2017-02-01 Innovia Films Ltd Authentication apparatus and method

Also Published As

Publication number Publication date
GB2328180A (en) 1999-02-17
GB9717284D0 (en) 1997-10-22

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Legal Events

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

Effective date: 20030814