GB1489084A - Simulated watermarking - Google Patents
Simulated watermarkingInfo
- Publication number
- GB1489084A GB1489084A GB4685874A GB4685874A GB1489084A GB 1489084 A GB1489084 A GB 1489084A GB 4685874 A GB4685874 A GB 4685874A GB 4685874 A GB4685874 A GB 4685874A GB 1489084 A GB1489084 A GB 1489084A
- Authority
- GB
- United Kingdom
- Prior art keywords
- paper
- radiation
- watermark
- colour
- composition
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/10—Watermarks
Abstract
1489084 Imitating watermarks; security paper TULLIS RUSSELL & CO Ltd 28 Oct 1975 [29 Oct 1974] 46858/74 Headings B6A and B6C A watermark is simulated in a paper sheet by impregnation in a desired pattern by a fluent, transparentizing composition which is polymerizable upon activation by radiation, the impregnated sheet then being irradiated with suitable activating radiation. The composition is made up of unsaturated monomers, unsaturated prepolymers and radiation stimulated polymerization initiators, examples of which are specified. The composition is screen or gravure printed in the desired pattern on to one surface of the paper, and suction may be applied to the opposite surface during or after the printing operation. Solvent may be applied to the printed surface by a spray roller or pad before irradiation, which may be by electromagnetic radiation such as U.V., X-, or γ-rays, by particle radiation such as a or # radiation, or by high energy proton or neutron beams. Added security may be imparted to the marked paper by arranging the watermark pattern in the form of lines or dots exhibiting a Moire effect. The watermark may be in two or more colours. Alternatively, the mark incorporates a colour former or inhibitor so that, with a suitable reagent applied to the paper, either the watermark or the surrounding sensitized paper area changes colour. Two or more colour forming watermarks may overlap and produce different colours. In a further embodiment, both colour forming reactants are applied, in powder or capsule form, in the watermark, and produce a colour when the paper is stamped.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4685874A GB1489084A (en) | 1975-10-28 | 1975-10-28 | Simulated watermarking |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4685874A GB1489084A (en) | 1975-10-28 | 1975-10-28 | Simulated watermarking |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1489084A true GB1489084A (en) | 1977-10-19 |
Family
ID=10442854
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4685874A Expired GB1489084A (en) | 1975-10-28 | 1975-10-28 | Simulated watermarking |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1489084A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2334780A1 (en) * | 1975-12-11 | 1977-07-08 | Mead Corp | Rendering fibrous supports, esp. paper, transparent - using liq. compsns. contg. curable ethylenically unsatd. cpds., for diazo and photographic work |
FR2561420A1 (en) * | 1984-03-13 | 1985-09-20 | Balauze Marcombe | Identity water mark |
GB2159463A (en) * | 1984-05-31 | 1985-12-04 | Continu Forms Holdings Plc | Paper with watermark effect |
EP0203499A2 (en) * | 1985-05-28 | 1986-12-03 | Belmarque Systems S.A. | A method of and apparatus for applying a mark to paper and a paper for use in such method |
WO1995009276A1 (en) * | 1993-09-30 | 1995-04-06 | Portals Limited | Improvement in security features for paper |
WO1995009275A1 (en) * | 1993-09-27 | 1995-04-06 | Portals Limited | Improvement in security features for paper |
FR2811258A1 (en) * | 2000-07-06 | 2002-01-11 | Bruno Jacomet | Production of watermarked paper comprises forming positive relief on papermaking screen by illuminating photosensitive polymer emulsion through negative |
WO2010089702A1 (en) | 2009-02-03 | 2010-08-12 | Arjowiggins Security | Method for securing a coloured opaque object |
WO2010130910A1 (en) | 2009-05-13 | 2010-11-18 | Oberthur Technologies | Method of manufacturing a security element for a security document |
WO2011154764A1 (en) | 2010-06-10 | 2011-12-15 | Arjowiggins Security | Secure structure |
US8171567B1 (en) | 2002-09-04 | 2012-05-01 | Tracer Detection Technology Corp. | Authentication method and system |
WO2013093848A1 (en) | 2011-12-22 | 2013-06-27 | Arjowiggins Security | Multilayer structure comprising at least one diffusing layer and method for manufacturing same |
US9363083B1 (en) | 2000-05-24 | 2016-06-07 | Copilot Ventures Fund Iii Llc | Authentication method and system |
US9811671B1 (en) | 2000-05-24 | 2017-11-07 | Copilot Ventures Fund Iii Llc | Authentication method and system |
EP3333812B1 (en) | 2013-12-03 | 2020-02-19 | Crane & Co., Inc. | A security sheet or document having one or more enhanced watermarks |
-
1975
- 1975-10-28 GB GB4685874A patent/GB1489084A/en not_active Expired
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2334780A1 (en) * | 1975-12-11 | 1977-07-08 | Mead Corp | Rendering fibrous supports, esp. paper, transparent - using liq. compsns. contg. curable ethylenically unsatd. cpds., for diazo and photographic work |
FR2561420A1 (en) * | 1984-03-13 | 1985-09-20 | Balauze Marcombe | Identity water mark |
GB2159463A (en) * | 1984-05-31 | 1985-12-04 | Continu Forms Holdings Plc | Paper with watermark effect |
EP0203499A2 (en) * | 1985-05-28 | 1986-12-03 | Belmarque Systems S.A. | A method of and apparatus for applying a mark to paper and a paper for use in such method |
EP0203499A3 (en) * | 1985-05-28 | 1988-02-10 | St.Regis Paper Co.(Uk)Ltd. | A method of and apparatus for applying a mark to paper and a paper for use in such method |
US4760239A (en) * | 1985-05-28 | 1988-07-26 | St. Regis Paper Company (Uk) Limited | Method of and apparatus for applying a mark to paper and a paper for use in such method |
US5928471A (en) * | 1993-09-27 | 1999-07-27 | Portals Limited | Security features for paper |
WO1995009275A1 (en) * | 1993-09-27 | 1995-04-06 | Portals Limited | Improvement in security features for paper |
GB2282611A (en) * | 1993-09-27 | 1995-04-12 | Portals Ltd | Improvement in security features for paper |
WO1995009276A1 (en) * | 1993-09-30 | 1995-04-06 | Portals Limited | Improvement in security features for paper |
GB2283026B (en) * | 1993-09-30 | 1997-01-08 | Portals Ltd | Improvement in security features for paper |
GB2283026A (en) * | 1993-09-30 | 1995-04-26 | Portals Ltd | Improvement in security features for paper |
US9363083B1 (en) | 2000-05-24 | 2016-06-07 | Copilot Ventures Fund Iii Llc | Authentication method and system |
US9811671B1 (en) | 2000-05-24 | 2017-11-07 | Copilot Ventures Fund Iii Llc | Authentication method and system |
FR2811258A1 (en) * | 2000-07-06 | 2002-01-11 | Bruno Jacomet | Production of watermarked paper comprises forming positive relief on papermaking screen by illuminating photosensitive polymer emulsion through negative |
US8171567B1 (en) | 2002-09-04 | 2012-05-01 | Tracer Detection Technology Corp. | Authentication method and system |
US8886946B1 (en) | 2002-09-04 | 2014-11-11 | Copilot Ventures Fund Iii Llc | Authentication method and system |
US9818249B1 (en) | 2002-09-04 | 2017-11-14 | Copilot Ventures Fund Iii Llc | Authentication method and system |
US8632101B2 (en) | 2009-02-03 | 2014-01-21 | Arjowiggins Security | Method for securing a coloured opaque object |
WO2010089702A1 (en) | 2009-02-03 | 2010-08-12 | Arjowiggins Security | Method for securing a coloured opaque object |
WO2010130910A1 (en) | 2009-05-13 | 2010-11-18 | Oberthur Technologies | Method of manufacturing a security element for a security document |
WO2011154764A1 (en) | 2010-06-10 | 2011-12-15 | Arjowiggins Security | Secure structure |
WO2013093848A1 (en) | 2011-12-22 | 2013-06-27 | Arjowiggins Security | Multilayer structure comprising at least one diffusing layer and method for manufacturing same |
EP3333812B1 (en) | 2013-12-03 | 2020-02-19 | Crane & Co., Inc. | A security sheet or document having one or more enhanced watermarks |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |