HK98688A - Method of rendering documents resistant to photocopying and anticopying paper therefor - Google Patents
Method of rendering documents resistant to photocopying and anticopying paper thereforInfo
- Publication number
- HK98688A HK98688A HK986/88A HK98688A HK98688A HK 98688 A HK98688 A HK 98688A HK 986/88 A HK986/88 A HK 986/88A HK 98688 A HK98688 A HK 98688A HK 98688 A HK98688 A HK 98688A
- Authority
- HK
- Hong Kong
- Prior art keywords
- document
- information
- front face
- anticopying
- photocopying
- 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)
- 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.
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 (1)
Publication Number | Publication Date |
---|---|
HK98688A true HK98688A (en) | 1988-12-16 |
Family
ID=23889168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK986/88A HK98688A (en) | 1983-03-16 | 1988-12-08 | Method of rendering documents resistant to photocopying and anticopying paper therefor |
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 AT AT83304762T patent/ATE32274T1/en not_active IP Right Cessation
- 1983-08-17 EP EP83304762A patent/EP0119344B1/en not_active Expired
- 1983-08-17 DE DE8383304762T patent/DE3375527D1/en not_active Expired
- 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 |
---|---|
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 |
FI831891A0 (en) | 1983-05-26 |
EP0119344A1 (en) | 1984-09-26 |
FI79671C (en) | 1990-02-12 |
JPS59174870A (en) | 1984-10-03 |
ATE32274T1 (en) | 1988-02-15 |
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 |
---|---|---|---|
PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |