GB2052587B - Security papers - Google Patents

Security papers

Info

Publication number
GB2052587B
GB2052587B GB8017971A GB8017971A GB2052587B GB 2052587 B GB2052587 B GB 2052587B GB 8017971 A GB8017971 A GB 8017971A GB 8017971 A GB8017971 A GB 8017971A GB 2052587 B GB2052587 B GB 2052587B
Authority
GB
United Kingdom
Prior art keywords
security papers
papers
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
GB8017971A
Other versions
GB2052587A (en
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 GB8017971A priority Critical patent/GB2052587B/en
Publication of GB2052587A publication Critical patent/GB2052587A/en
Application granted granted Critical
Publication of GB2052587B publication Critical patent/GB2052587B/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING 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
    • C09D11/00—Inks
    • C09D11/50—Sympathetic, colour changing or similar inks
    • 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
    • B41M3/14—Security printing
    • B41M3/142—Security printing using chemical colour-formers or chemical reactions, e.g. leuco-dye/acid, photochromes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/46—Elements suited for chemical verification or impeding chemical tampering, e.g. by use of eradicators
GB8017971A 1979-06-02 1980-06-02 Security papers Expired GB2052587B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8017971A GB2052587B (en) 1979-06-02 1980-06-02 Security papers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7919287 1979-06-02
GB8017971A GB2052587B (en) 1979-06-02 1980-06-02 Security papers

Publications (2)

Publication Number Publication Date
GB2052587A GB2052587A (en) 1981-01-28
GB2052587B true GB2052587B (en) 1983-04-07

Family

ID=26271749

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8017971A Expired GB2052587B (en) 1979-06-02 1980-06-02 Security papers

Country Status (1)

Country Link
GB (1) GB2052587B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60500540A (en) * 1983-02-15 1985-04-18 バロ−ス・コ−ポレ−ション Inkjet printing ink containing iodine and potassium iodide
DE69020402T2 (en) * 1989-03-14 1995-11-23 Wiggins Teape Group Ltd Composition for authenticating security paper.
GB8915400D0 (en) * 1989-07-05 1989-08-23 Nocopi Int Inc Selectively copyresistant security paper
US5516362A (en) * 1993-05-28 1996-05-14 Nocopi Technologies, Inc. Security marking method and composition
GB9820877D0 (en) * 1998-09-26 1998-11-18 Kapadia Suresh B Paper products and chemical formulations for their manufacture
US6783991B1 (en) * 2002-02-06 2004-08-31 The Standard Register Company Reversible and reusable authentication system for secure documents
ITMI20050744A1 (en) * 2005-04-26 2006-10-27 Gruppo Cordenons Spa PATENTED PAPER MATERIAL AUTHENTICABLE IN PARTICULAR FOR LABELING AND PACKAGING AND ITS PROCESS OF MANUFACTURING
GB2496127A (en) 2011-10-31 2013-05-08 Aidc Global Ltd A randomly generated identification mark

Also Published As

Publication number Publication date
GB2052587A (en) 1981-01-28

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Legal Events

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

Effective date: 19940602