GB1507454A - Security paper - Google Patents

Security paper

Info

Publication number
GB1507454A
GB1507454A GB2082674A GB2082674A GB1507454A GB 1507454 A GB1507454 A GB 1507454A GB 2082674 A GB2082674 A GB 2082674A GB 2082674 A GB2082674 A GB 2082674A GB 1507454 A GB1507454 A GB 1507454A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
paper
ink
colour
reactant
security
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
GB2082674A
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.)
Wiggins Teape Ltd
Original Assignee
Wiggins Teape 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

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; MISCELLANEOUS COMPOSITIONS; MISCELLANEOUS APPLICATIONS OF MATERIALS
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00Inks
    • C09D11/50Sympathetic, colour changing or similar inks
    • 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
    • B41M3/14Security printing
    • B41M3/142Security printing using chemical colour-formers or chemical reactions, e.g. leuco-dye/acid, photochromes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29Securities; Bank notes

Abstract

1507454 Security paper; preventing fraud WIGGINS TEAPE Ltd 19 June 1975 [10 May 1974 24 July 1974] 20826/74 and 32743/74 Headings B6A and B6C Security paper for cheques, passports &c. comprises a paper base coated with a composition containing a leuoodye colour former, a clay and/or CaCO 3 filler and a starch, casein or latex binder. When the paper is stamped with a stamp impregnated with a mixture of an acidic material reactant and a dark ink, the colour formed by contact between the reactant and colour former produces an authenticating coloured halo around the stamped dark ink data. The effect of the filler is said to be to retain the ink in its place of application whilst the reactant spreads to produce the halo. Coatings of different colour formers may be applied to different areas of the paper to give multicoloured haloes. Numerous examples of suitable colour formers and reactants are specified. The paper may additionally bear chemicals which give colours when contacted with fountain pen ink or ballpoint pen ink eradicators.
GB2082674A 1975-06-19 1975-06-19 Security paper Expired GB1507454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2082674A GB1507454A (en) 1975-06-19 1975-06-19 Security paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2082674A GB1507454A (en) 1975-06-19 1975-06-19 Security paper

Publications (1)

Publication Number Publication Date
GB1507454A true true GB1507454A (en) 1978-04-12

Family

ID=10152365

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2082674A Expired GB1507454A (en) 1975-06-19 1975-06-19 Security paper

Country Status (1)

Country Link
GB (1) GB1507454A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0090130A1 (en) * 1982-03-25 1983-10-05 Billett-Automation Dipl.-Ing. Klaus Schwarz OHG Process for checking the authenticity of security documents, and distributing device for carrying out the process
GB2122545A (en) * 1982-06-26 1984-01-18 Coated Papers Limited Security paper
FR2539533A1 (en) * 1983-01-17 1984-07-20 Aussedat Rey Method and developer for identifying security paper, copier paper or thermoreactive paper, as well as manual instrument for their implementation
EP0243285A1 (en) * 1986-04-24 1987-10-28 Aussedat-Rey Security paper made tamper-proof and/or authenticatable by way of thermochromism, and process for its preparation
WO1990015190A1 (en) * 1989-06-08 1990-12-13 Drewsen Spezialpapiere Gmbh & Co. Kg Security paper for producing documents
WO1991000390A1 (en) * 1989-07-05 1991-01-10 Nocopi International Ltd. Document security method and system
FR2657630A1 (en) * 1990-01-31 1991-08-02 Arjomari Prioux Document capable of being authenticated by an authenticating composition, authenticating composition and process for performing this authentication
EP0440554A1 (en) * 1990-01-31 1991-08-07 Arjo Wiggins S.A. Document authenticable by an authentication composition and process to realize said authentication
US5188871A (en) * 1989-03-14 1993-02-23 The Wiggins Teape Group Limited Authenticatable security paper
FR2698339A1 (en) * 1992-11-23 1994-05-27 Chavanne Michel Packaging for items to ship.
EP1011443A1 (en) * 1997-08-19 2000-06-28 Kenny Hansmire Positive identification and protection of documents using inkless fingerprint methodology
US6783991B1 (en) * 2002-02-06 2004-08-31 The Standard Register Company Reversible and reusable authentication system for secure documents
WO2008124412A1 (en) * 2007-04-04 2008-10-16 Iya Technology Laboratories, Llc Ink and developer system
US8152073B2 (en) 2008-04-30 2012-04-10 Polyonics, Inc. Method and apparatus for the detection of counterfeiting

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0090130A1 (en) * 1982-03-25 1983-10-05 Billett-Automation Dipl.-Ing. Klaus Schwarz OHG Process for checking the authenticity of security documents, and distributing device for carrying out the process
GB2122545A (en) * 1982-06-26 1984-01-18 Coated Papers Limited Security paper
FR2539533A1 (en) * 1983-01-17 1984-07-20 Aussedat Rey Method and developer for identifying security paper, copier paper or thermoreactive paper, as well as manual instrument for their implementation
EP0243285A1 (en) * 1986-04-24 1987-10-28 Aussedat-Rey Security paper made tamper-proof and/or authenticatable by way of thermochromism, and process for its preparation
FR2597895A1 (en) * 1986-04-24 1987-10-30 Aussedat Rey unfalsifiable safety paper and / or authenticated by thermochromy and method of preparing
US5188871A (en) * 1989-03-14 1993-02-23 The Wiggins Teape Group Limited Authenticatable security paper
WO1990015190A1 (en) * 1989-06-08 1990-12-13 Drewsen Spezialpapiere Gmbh & Co. Kg Security paper for producing documents
JP2532003B2 (en) 1989-07-05 1996-09-11 ノコピ・インターナショナル・リミテッド Photocopy, a method of facsimile transmission prevention system and the substrate and applique used in them - data
WO1991000390A1 (en) * 1989-07-05 1991-01-10 Nocopi International Ltd. Document security method and system
US5290068A (en) * 1989-07-05 1994-03-01 Nocopi International Ltd. Document security method and system
EP0440554A1 (en) * 1990-01-31 1991-08-07 Arjo Wiggins S.A. Document authenticable by an authentication composition and process to realize said authentication
FR2662717A2 (en) * 1990-01-31 1991-12-06 Arjomari Prioux Document which can be authenticated by a composition with a desensitised zone and authentication process
FR2657630A1 (en) * 1990-01-31 1991-08-02 Arjomari Prioux Document capable of being authenticated by an authenticating composition, authenticating composition and process for performing this authentication
FR2698339A1 (en) * 1992-11-23 1994-05-27 Chavanne Michel Packaging for items to ship.
WO1994012398A1 (en) * 1992-11-23 1994-06-09 Michel Chavanne Packaging for objects to be mailed
EP1011443A1 (en) * 1997-08-19 2000-06-28 Kenny Hansmire Positive identification and protection of documents using inkless fingerprint methodology
EP1011443A4 (en) * 1997-08-19 2001-01-17 Kenny Hansmire Positive identification and protection of documents using inkless fingerprint methodology
US6783991B1 (en) * 2002-02-06 2004-08-31 The Standard Register Company Reversible and reusable authentication system for secure documents
WO2008124412A1 (en) * 2007-04-04 2008-10-16 Iya Technology Laboratories, Llc Ink and developer system
US8152073B2 (en) 2008-04-30 2012-04-10 Polyonics, Inc. Method and apparatus for the detection of counterfeiting

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Legal Events

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