NO171099C - ANTI-PHOTO COPY PAPER - Google Patents
ANTI-PHOTO COPY PAPERInfo
- Publication number
- NO171099C NO171099C NO831896A NO831896A NO171099C NO 171099 C NO171099 C NO 171099C NO 831896 A NO831896 A NO 831896A NO 831896 A NO831896 A NO 831896A NO 171099 C NO171099 C NO 171099C
- Authority
- NO
- Norway
- Prior art keywords
- document
- information
- front face
- copy paper
- visible light
- Prior art date
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)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Medicines Containing Plant Substances (AREA)
- Saccharide Compounds (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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO904110A NO171100C (en) | 1983-03-16 | 1990-09-20 | DOCUMENT PROVIDED WITH INFORMATION AND RESPONSIBLE FOR PHOTOCOPYING |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/475,791 US4632429A (en) | 1981-05-25 | 1983-03-16 | Method of rendering documents resistant to photocopying and anti-copying paper therefor |
Publications (3)
Publication Number | Publication Date |
---|---|
NO831896L NO831896L (en) | 1984-09-17 |
NO171099B NO171099B (en) | 1992-10-19 |
NO171099C true NO171099C (en) | 1993-01-27 |
Family
ID=23889168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO831896A NO171099C (en) | 1983-03-16 | 1983-05-27 | ANTI-PHOTO COPY PAPER |
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)
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)
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 |
-
1983
- 1983-05-20 ZA ZA833659A patent/ZA833659B/en unknown
- 1983-05-26 FI FI831891A patent/FI79671C/en not_active IP Right Cessation
- 1983-05-27 NO NO831896A patent/NO171099C/en unknown
- 1983-05-30 DK DK243283A patent/DK243283A/en not_active Application Discontinuation
- 1983-08-09 CA CA000434210A patent/CA1214805A/en not_active Expired
- 1983-08-17 DE DE8383304762T patent/DE3375527D1/en not_active Expired
- 1983-08-17 EP EP83304762A patent/EP0119344B1/en not_active Expired
- 1983-08-17 AT AT83304762T patent/ATE32274T1/en not_active IP Right Cessation
- 1983-08-18 AU AU18110/83A patent/AU560208B2/en not_active Ceased
- 1983-08-22 JP JP58151755A patent/JPS59174870A/en active Granted
- 1983-09-28 NZ NZ205794A patent/NZ205794A/en unknown
-
1988
- 1988-12-08 HK HK986/88A patent/HK98688A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0119344B1 (en) | 1988-01-27 |
ZA833659B (en) | 1984-10-31 |
EP0119344A1 (en) | 1984-09-26 |
FI831891L (en) | 1984-09-17 |
JPH0513318B2 (en) | 1993-02-22 |
DK243283D0 (en) | 1983-05-30 |
FI79671B (en) | 1989-10-31 |
DE3375527D1 (en) | 1988-03-03 |
ATE32274T1 (en) | 1988-02-15 |
FI831891A0 (en) | 1983-05-26 |
NO831896L (en) | 1984-09-17 |
CA1214805A (en) | 1986-12-02 |
NZ205794A (en) | 1987-02-20 |
NO171099B (en) | 1992-10-19 |
FI79671C (en) | 1990-02-12 |
DK243283A (en) | 1984-09-17 |
HK98688A (en) | 1988-12-16 |
JPS59174870A (en) | 1984-10-03 |
AU1811083A (en) | 1984-09-20 |
AU560208B2 (en) | 1987-04-02 |
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