FI831891A0 - FOERFARANDE FOER FOERHINDRANDE AV LJUSKOPIERING AV DOKUMENT OCH FOER LJUSKOPIERING OTILLAEMPLIGT PASAMT LJUSKOPIERING FOERHINDRANDE TRYCKFAERG - Google Patents

FOERFARANDE FOER FOERHINDRANDE AV LJUSKOPIERING AV DOKUMENT OCH FOER LJUSKOPIERING OTILLAEMPLIGT PASAMT LJUSKOPIERING FOERHINDRANDE TRYCKFAERG

Info

Publication number
FI831891A0
FI831891A0 FI831891A FI831891A FI831891A0 FI 831891 A0 FI831891 A0 FI 831891A0 FI 831891 A FI831891 A FI 831891A FI 831891 A FI831891 A FI 831891A FI 831891 A0 FI831891 A0 FI 831891A0
Authority
FI
Finland
Prior art keywords
ljuskopiering
foerhindrande
document
foer
information
Prior art date
Application number
FI831891A
Other languages
Finnish (fi)
Other versions
FI79671B (en
FI831891L (en
FI79671C (en
Inventor
Norman A Gardner
Michael P Voticky
Original Assignee
Norman A Gardner
Michael P Voticky
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
Priority claimed from US06/475,791 external-priority patent/US4632429A/en
Application filed by Norman A Gardner, Michael P Voticky filed Critical Norman A Gardner
Publication of FI831891A0 publication Critical patent/FI831891A0/en
Publication of FI831891L publication Critical patent/FI831891L/en
Priority to FI884161A priority Critical patent/FI80638C/en
Publication of FI79671B publication Critical patent/FI79671B/en
Application granted granted Critical
Publication of FI79671C publication Critical patent/FI79671C/en

Links

Classifications

    • 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

Landscapes

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Paper (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)
  • Cleaning In Electrography (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Saccharide Compounds (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

A document has information appearing thereon, with at least a portion of the information being located on a front face of a portion of the document. The front face portion has a colour with a sufficiently low reflection spectral response to render the document portion substantially incapable of being photocopied in an information-readable manner. The document portion is capable of transmitting visible light from the rear face to the front face to cause sufficient contrast between the relatively non-translucent information and the transmitted light to enable the information to be read by a human eye viewing the front face of the document when visible light is transmitted through the document from the rear face to the front face.
FI831891A 1983-03-16 1983-05-26 DOCUMENT, FOERFARANDE FOER FOERHINDRANDE AV LJUSKOPIERING AV DOKUMENT OCH FOER LJUSKOPIERING OTILLAEMPLIGT PAPPER. FI79671C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI884161A FI80638C (en) 1983-03-16 1988-09-09 DOCUMENT, FOERFARANDE FOER FOERHINDRANDE AV FOTOKOPIERING AV DOKUMENTET OCH FOER FOTOKOPIERING OLAEMPLIGT PAPPER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US47579183 1983-03-16
US06/475,791 US4632429A (en) 1981-05-25 1983-03-16 Method of rendering documents resistant to photocopying and anti-copying paper therefor

Publications (4)

Publication Number Publication Date
FI831891A0 true FI831891A0 (en) 1983-05-26
FI831891L FI831891L (en) 1984-09-17
FI79671B FI79671B (en) 1989-10-31
FI79671C FI79671C (en) 1990-02-12

Family

ID=23889168

Family Applications (1)

Application Number Title Priority Date Filing Date
FI831891A FI79671C (en) 1983-03-16 1983-05-26 DOCUMENT, FOERFARANDE FOER FOERHINDRANDE AV LJUSKOPIERING AV DOKUMENT OCH FOER LJUSKOPIERING OTILLAEMPLIGT PAPPER.

Country Status (12)

Country Link
EP (1) EP0119344B1 (en)
JP (1) JPS59174870A (en)
AT (1) ATE32274T1 (en)
AU (1) AU560208B2 (en)
CA (1) CA1214805A (en)
DE (1) DE3375527D1 (en)
DK (1) DK243283A (en)
FI (1) FI79671C (en)
HK (1) HK98688A (en)
NO (1) NO171099C (en)
NZ (1) NZ205794A (en)
ZA (1) ZA833659B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4951163B2 (en) * 2008-07-03 2012-06-13 美津濃株式会社 Sports gloves

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852088A (en) * 1972-03-20 1974-12-03 Ibm Security document system and method
US3887742A (en) * 1972-04-13 1975-06-03 Richard E Reinnagel Copy resistant documents
FR2247067A5 (en) * 1973-10-04 1975-05-02 Arjomari Prioux Non-photocopiable security document - allows markings to be read by eye but reflects uniform light when illuminated
JPS55100587A (en) * 1979-01-29 1980-07-31 Toppan Printing Co Ltd Image forming material
GB2096055B (en) * 1979-09-17 1985-02-27 Auken John A Van Anti-copying systems for copying machines

Also Published As

Publication number Publication date
NO171099C (en) 1993-01-27
FI79671B (en) 1989-10-31
CA1214805A (en) 1986-12-02
FI831891L (en) 1984-09-17
NO171099B (en) 1992-10-19
DE3375527D1 (en) 1988-03-03
ZA833659B (en) 1984-10-31
JPH0513318B2 (en) 1993-02-22
DK243283D0 (en) 1983-05-30
DK243283A (en) 1984-09-17
NO831896L (en) 1984-09-17
NZ205794A (en) 1987-02-20
EP0119344A1 (en) 1984-09-26
FI79671C (en) 1990-02-12
JPS59174870A (en) 1984-10-03
ATE32274T1 (en) 1988-02-15
HK98688A (en) 1988-12-16
AU1811083A (en) 1984-09-20
AU560208B2 (en) 1987-04-02
EP0119344B1 (en) 1988-01-27

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: VOTICKY, MICHAEL P.

Owner name: GARDNER, NORMAN A.