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AU5791598A - Photochromic security system for security documents - Google Patents

Photochromic security system for security documents

Info

Publication number
AU5791598A
AU5791598A AU57915/98A AU5791598A AU5791598A AU 5791598 A AU5791598 A AU 5791598A AU 57915/98 A AU57915/98 A AU 57915/98A AU 5791598 A AU5791598 A AU 5791598A AU 5791598 A AU5791598 A AU 5791598A
Authority
AU
Australia
Prior art keywords
security
photochromic
documents
security system
security documents
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.)
Abandoned
Application number
AU57915/98A
Inventor
John Bannard
Dennis Maguire
Shakher Puntambekar
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.)
Standard Register Co
Original Assignee
Standard Register Co
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 Standard Register Co filed Critical Standard Register Co
Publication of AU5791598A publication Critical patent/AU5791598A/en
Abandoned legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/28Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating
    • B41M5/282Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating using thermochromic compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14Security printing
    • B41M3/142Security printing using chemical colour-formers or chemical reactions, e.g. leuco-dye/acid, photochromes
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/08Photoprinting; Processes and means for preventing photoprinting
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/04Preventing copies being made of an original
    • G03G21/043Preventing copies being made of an original by using an original which is not reproducible or only reproducible with a different appearence, e.g. originals with a photochromic layer or a colour background

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
AU57915/98A 1996-12-23 1997-12-08 Photochromic security system for security documents Abandoned AU5791598A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US78005796A 1996-12-23 1996-12-23
US08780057 1996-12-23
PCT/US1997/022048 WO1998028154A1 (en) 1996-12-23 1997-12-08 Photochromic security system for security documents

Publications (1)

Publication Number Publication Date
AU5791598A true AU5791598A (en) 1998-07-17

Family

ID=25118444

Family Applications (1)

Application Number Title Priority Date Filing Date
AU57915/98A Abandoned AU5791598A (en) 1996-12-23 1997-12-08 Photochromic security system for security documents

Country Status (7)

Country Link
EP (1) EP0946371A1 (en)
AU (1) AU5791598A (en)
CA (1) CA2276043A1 (en)
CO (1) CO4890890A1 (en)
ID (1) ID19169A (en)
WO (1) WO1998028154A1 (en)
ZA (1) ZA9710835B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2942244B1 (en) 2009-02-16 2011-04-15 Arjowiggins Security METHOD FOR CREATING VISUAL ANIMATION ON A SUPPORT

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3597082A (en) * 1967-02-20 1971-08-03 Litton Business Systems Inc Uncopyable photochromic paper
DE2048853C3 (en) * 1969-10-07 1978-05-11 Xerox Corp., Rochester, N.Y. (V.St.A.) Process for the production of non-copyable documents
IL42090A (en) * 1973-04-22 1977-01-31 Yeda Res & Dev Photocopying prevention
FR2618812B1 (en) * 1987-07-30 1990-04-27 Vicat Sa ANTICOPY PRINT-WRITE MEDIUM AND ASSOCIATED METHOD

Also Published As

Publication number Publication date
ZA9710835B (en) 1998-06-12
WO1998028154A1 (en) 1998-07-02
CO4890890A1 (en) 2000-02-28
EP0946371A1 (en) 1999-10-06
ID19169A (en) 1998-06-28
CA2276043A1 (en) 1998-07-02

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