GB1489084A - Simulated watermarking - Google Patents

Simulated watermarking

Info

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
applied
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
Application number
GB4685874A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tullis Russell and Co Ltd
Original Assignee
Tullis Russell and Co Ltd
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 Tullis Russell and Co Ltd filed Critical Tullis Russell and Co Ltd
Priority to GB4685874A priority Critical patent/GB1489084A/en
Publication of GB1489084A publication Critical patent/GB1489084A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/10Watermarks

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.
GB4685874A 1975-10-28 1975-10-28 Simulated watermarking Expired GB1489084A (en)

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 (14)

* Cited by examiner, † Cited by third party
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
WO1995009275A1 (en) * 1993-09-27 1995-04-06 Portals Limited Improvement in security features for paper
WO1995009276A1 (en) * 1993-09-30 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

Cited By (23)

* Cited by examiner, † Cited by third party
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
GB2282611A (en) * 1993-09-27 1995-04-12 Portals Ltd Improvement in security features for paper
WO1995009275A1 (en) * 1993-09-27 1995-04-06 Portals Limited Improvement in security features for paper
US5928471A (en) * 1993-09-27 1999-07-27 Portals Limited Security features for paper
GB2283026A (en) * 1993-09-30 1995-04-26 Portals Ltd Improvement in security features for paper
GB2283026B (en) * 1993-09-30 1997-01-08 Portals Ltd Improvement in security features for paper
WO1995009276A1 (en) * 1993-09-30 1995-04-06 Portals Limited Improvement in security features for paper
US9811671B1 (en) 2000-05-24 2017-11-07 Copilot Ventures Fund Iii Llc Authentication method and system
US9363083B1 (en) 2000-05-24 2016-06-07 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
US8886946B1 (en) 2002-09-04 2014-11-11 Copilot Ventures Fund Iii Llc Authentication method and system
US8171567B1 (en) 2002-09-04 2012-05-01 Tracer Detection Technology Corp. 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

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee