GB9224955D0 - Documents with security markings - Google Patents

Documents with security markings

Info

Publication number
GB9224955D0
GB9224955D0 GB929224955A GB9224955A GB9224955D0 GB 9224955 D0 GB9224955 D0 GB 9224955D0 GB 929224955 A GB929224955 A GB 929224955A GB 9224955 A GB9224955 A GB 9224955A GB 9224955 D0 GB9224955 D0 GB 9224955D0
Authority
GB
United Kingdom
Prior art keywords
colour
image
print
document
change
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Withdrawn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
GB929224955A
Other versions
GB2272861A (en
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.)
University College Cardiff Consultants Ltd
Cardiff University
Original Assignee
University College Cardiff Consultants Ltd
Cardiff University
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 University College Cardiff Consultants Ltd, Cardiff University filed Critical University College Cardiff Consultants Ltd
Priority to GB9224955A priority Critical patent/GB2272861A/en
Publication of GB9224955D0 publication Critical patent/GB9224955D0/en
Publication of GB2272861A publication Critical patent/GB2272861A/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Withdrawn legal-status Critical Current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
    • B42D25/378—Special inks
    • 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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/12—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using a selected wavelength, e.g. to sense red marks and ignore blue marks
    • 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

Abstract

A security-marked document 10 carries an image in reversibly colour-changeable photochromic or thermochromic print and also carries an image in constant-colour print. An apparatus for reading the security markings comprises means (e.g. UV light 34) for acting upon the document to change the colour of the photochromic print, and means (e.g. camera 30) for viewing the document after the colour-change and to form electrical signals representing the image being viewed, so that the document can be verified. These image-representing signals may be compared with corresponding signals obtained by viewing the document before the colour-change is effected. The colour-changeable print and the constant capture colour print may be in encoded form. A keyboard 40 may be used to input a PIN code into the image processing unit 32. <IMAGE>
GB9224955A 1992-11-28 1992-11-28 Apparatus for reading security documents bearing photochromic or thermochromic prints. Withdrawn GB2272861A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9224955A GB2272861A (en) 1992-11-28 1992-11-28 Apparatus for reading security documents bearing photochromic or thermochromic prints.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9224955A GB2272861A (en) 1992-11-28 1992-11-28 Apparatus for reading security documents bearing photochromic or thermochromic prints.

Publications (2)

Publication Number Publication Date
GB9224955D0 true GB9224955D0 (en) 1993-01-20
GB2272861A GB2272861A (en) 1994-06-01

Family

ID=10725826

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9224955A Withdrawn GB2272861A (en) 1992-11-28 1992-11-28 Apparatus for reading security documents bearing photochromic or thermochromic prints.

Country Status (1)

Country Link
GB (1) GB2272861A (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5883043A (en) * 1997-08-27 1999-03-16 Ncr Corporation Thermal paper with security features
EP0844097B1 (en) * 1996-11-21 2001-07-18 Ncr International Inc. Thermal paper with security features and security ink therefor
US6770687B1 (en) 1996-11-21 2004-08-03 Ncr Corporation Water-based dual security ink
WO2000007151A1 (en) * 1998-07-27 2000-02-10 Siemens Aktiengesellschaft Security paper, method and device for checking the authenticity of documents recorded thereon
US6644764B2 (en) * 1998-10-28 2003-11-11 Hewlett-Packard Development Company, L.P. Integrated printing/scanning system using invisible ink for document tracking
GB9826409D0 (en) * 1998-12-02 1999-01-27 B & H Liquid Crystal Devices Security articles
JP2000177229A (en) * 1998-12-21 2000-06-27 Alps Electric Co Ltd Information recorded matter and information recording method
GB2347646B (en) * 1999-03-12 2001-01-31 Rue De Int Ltd Improvements in security elements
EP1038690A1 (en) * 1999-03-22 2000-09-27 Fabriques De Tabac Reunies S.A. Printed latent raster image
DE19961841A1 (en) * 1999-12-21 2001-06-28 Joergen Brosow Fraud-proof data carrier useful for security, e.g. banknote or check, contains photochromic substance converted from one stable isomer to another by light, embedded in substrate transmitting conversion and read-out light
US20020057440A1 (en) * 2000-05-19 2002-05-16 Michael Weiner Document with embedded information
DE10231634A1 (en) * 2002-07-12 2004-01-22 Datasound Gmbh Method and device for reading coded information
DE10303913A1 (en) * 2003-01-31 2004-08-12 Quiss Gmbh identification device
WO2005016654A1 (en) * 2003-08-15 2005-02-24 Ciba Specialty Chemicals Holding Inc. Method of printing a time-temperature integrator onto a substrate
US8110281B2 (en) * 2004-07-02 2012-02-07 3Dtl, Inc. Systems and methods for creating optical effects on media
US7645719B2 (en) 2004-10-13 2010-01-12 Ncr Corporation Thermal paper with security features
AR053508A1 (en) 2006-05-31 2007-05-09 Agustin Jose Luis Perez SYSTEM FOR THE RECORDING AND READING OF DATA TO BE PRESSED FROM PRINTED CHROMATIC INFORMATION THAT MODIFIES PATTERNS ISSUED BY A SOURCE OF ELECTROMAGNETIC WAVES, GENERATING NEW PATTERNS AND ORIGINATING RECOGNIZABLE CATEGORIES AND ASSIGNABLE TO A CODE
US8550358B2 (en) 2006-05-31 2013-10-08 Agustin Jose Luis Perez Procedure for data encoding and reading starting from interference of wave patterns generated in a printed chromatic system
US7401730B2 (en) 2006-09-15 2008-07-22 Ncr Corporation Self-service deposit method and apparatus
FR2922905B1 (en) * 2007-10-26 2009-12-18 Arjowiggins Licensing Sas SAFETY STRUCTURE COMPRISING A THERMOCHROMIC ELEMENT AND A PHOTOCHROMIC ELEMENT
DE102011077895A1 (en) * 2011-06-21 2012-12-27 Bundesdruckerei Gmbh Method and device for creating a document reference data record based on a document
FR2999764B1 (en) * 2012-12-14 2017-08-25 Oberthur Fiduciaire Sas METHOD FOR VERIFYING THE AUTHENTICITY OF A SECURITY DOCUMENT

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532132A (en) * 1978-08-28 1980-03-06 Laurel Bank Machine Co Bill discriminator
GB8700689D0 (en) * 1987-01-13 1987-02-18 Liquid Crystal Devices Ltd Security documents
SE461359B (en) * 1987-06-30 1990-02-05 Global Security Ab SET AND DEVICE FOR INSERT LABELING OF BOOKLETS OR VALUES
US5630869A (en) * 1988-01-12 1997-05-20 Sicipa Holding S.A. Reversibly photochromic printing inks
GB8903300D0 (en) * 1989-02-14 1989-04-05 Rue Company The Plc De Ink composition

Also Published As

Publication number Publication date
GB2272861A (en) 1994-06-01

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)