NZ225591A - Anti-copying medium for writing or printing - Google Patents

Anti-copying medium for writing or printing

Info

Publication number
NZ225591A
NZ225591A NZ225591A NZ22559188A NZ225591A NZ 225591 A NZ225591 A NZ 225591A NZ 225591 A NZ225591 A NZ 225591A NZ 22559188 A NZ22559188 A NZ 22559188A NZ 225591 A NZ225591 A NZ 225591A
Authority
NZ
New Zealand
Prior art keywords
writing
printing
copying medium
copying
medium
Prior art date
Application number
NZ225591A
Inventor
R Gautron
P Escaffre
Original Assignee
Vicat Sa
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 Vicat Sa filed Critical Vicat Sa
Publication of NZ225591A publication Critical patent/NZ225591A/en

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/08—Photoprinting; Processes and means for preventing photoprinting
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/04—Preventing copies being made of an original
    • G03G21/043—Preventing 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
NZ225591A 1987-07-30 1988-07-27 Anti-copying medium for writing or printing NZ225591A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8710845A FR2618812B1 (en) 1987-07-30 1987-07-30 ANTICOPY PRINT-WRITE MEDIUM AND ASSOCIATED METHOD

Publications (1)

Publication Number Publication Date
NZ225591A true NZ225591A (en) 1989-09-27

Family

ID=9353739

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ225591A NZ225591A (en) 1987-07-30 1988-07-27 Anti-copying medium for writing or printing

Country Status (10)

Country Link
EP (1) EP0302774A3 (en)
JP (1) JPS6490480A (en)
CN (1) CN1032827A (en)
AU (1) AU610614B2 (en)
DK (1) DK425988A (en)
FI (1) FI883572A (en)
FR (1) FR2618812B1 (en)
NO (1) NO883384L (en)
NZ (1) NZ225591A (en)
PT (1) PT88130A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9007387D0 (en) * 1990-04-02 1990-05-30 Nocopi Int Inc A switchon-switchoff,multistate,interactive,antiphotocopying,antifraud and antifaxing system
ES2066685B1 (en) * 1992-10-28 1995-11-16 Teledata S A PROCEDURE FOR TREATING PAPER, PROTECTING IT AGAINST UNAUTHORIZED PHOTOCOPIES.
US5720897A (en) * 1995-01-25 1998-02-24 University Of Florida Transition metal bleach activators for bleaching agents and detergent-bleach compositions
ZA9710835B (en) * 1996-12-23 1998-06-12 Standard Register Co Photochromic security system.
CN103526646A (en) * 2013-09-26 2014-01-22 昆山市长宏印刷厂 Anti-copying computer printing paper
CN109837031A (en) * 2017-11-29 2019-06-04 北京康得新功能材料有限公司 A kind of anti-copy pre-coating film and preparation method thereof
CN111519469B (en) * 2020-05-18 2021-12-24 湖南翰坤实业有限公司 Anti-patting paper material and preparation method thereof
CN115045137A (en) * 2022-05-16 2022-09-13 江苏卫星新材料股份有限公司 Light-variable special paper and preparation method thereof

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
US3713861A (en) * 1969-12-04 1973-01-30 Xerox Corp Inhibitor device
IL42090A (en) * 1973-04-22 1977-01-31 Yeda Res & Dev Photocopying prevention

Also Published As

Publication number Publication date
CN1032827A (en) 1989-05-10
DK425988D0 (en) 1988-07-29
FR2618812A1 (en) 1989-02-03
FI883572A0 (en) 1988-07-29
NO883384L (en) 1989-01-31
FR2618812B1 (en) 1990-04-27
AU610614B2 (en) 1991-05-23
NO883384D0 (en) 1988-07-29
FI883572A (en) 1989-01-31
DK425988A (en) 1989-01-31
EP0302774A3 (en) 1989-03-01
EP0302774A2 (en) 1989-02-08
AU2009688A (en) 1989-06-29
JPS6490480A (en) 1989-04-06
PT88130A (en) 1989-06-30

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