AU560131B2 - Invisible ink structure - Google Patents

Invisible ink structure

Info

Publication number
AU560131B2
AU560131B2 AU23045/84A AU2304584A AU560131B2 AU 560131 B2 AU560131 B2 AU 560131B2 AU 23045/84 A AU23045/84 A AU 23045/84A AU 2304584 A AU2304584 A AU 2304584A AU 560131 B2 AU560131 B2 AU 560131B2
Authority
AU
Australia
Prior art keywords
invisible ink
ink structure
invisible
ink
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.)
Ceased
Application number
AU23045/84A
Other versions
AU2304584A (en
Inventor
Roderick Peter John Tomlinson
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.)
FIELD NORMAN JOHN
Lockley Services Pty Ltd
Original Assignee
Lockley Services Pty 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 Lockley Services Pty Ltd filed Critical Lockley Services Pty Ltd
Priority to AU23045/84A priority Critical patent/AU560131B2/en
Publication of AU2304584A publication Critical patent/AU2304584A/en
Application granted granted Critical
Publication of AU560131B2 publication Critical patent/AU560131B2/en
Anticipated expiration legal-status Critical
Ceased 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
AU23045/84A 1977-12-02 1984-01-03 Invisible ink structure Ceased AU560131B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU23045/84A AU560131B2 (en) 1977-12-02 1984-01-03 Invisible ink structure

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPD2655 1977-12-02
AUPD2656 1977-12-02
AU23045/84A AU560131B2 (en) 1977-12-02 1984-01-03 Invisible ink structure

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
AU42109/78A Division AU539923B2 (en) 1977-12-02 1978-11-30 A system of developing and erasing invisible inks

Publications (2)

Publication Number Publication Date
AU2304584A AU2304584A (en) 1984-05-03
AU560131B2 true AU560131B2 (en) 1987-04-02

Family

ID=3712157

Family Applications (1)

Application Number Title Priority Date Filing Date
AU23045/84A Ceased AU560131B2 (en) 1977-12-02 1984-01-03 Invisible ink structure

Country Status (1)

Country Link
AU (1) AU560131B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU615319B2 (en) * 1989-03-29 1991-09-26 Arakawa Kagaku Kogyo Kabushiki Kaisha Color developer for pressure-sensitive recording medium, aqueous dispersion of color developer, and process for its preparation
WO2001083231A1 (en) * 2000-04-28 2001-11-08 Mitsubishi Hitec Paper Flensburg Gmbh Recording materials and printing inks with a temporarily effective security feature

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06164914A (en) * 1992-11-20 1994-06-10 Toppan Printing Co Ltd Copy prevention method and copying machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU615319B2 (en) * 1989-03-29 1991-09-26 Arakawa Kagaku Kogyo Kabushiki Kaisha Color developer for pressure-sensitive recording medium, aqueous dispersion of color developer, and process for its preparation
WO2001083231A1 (en) * 2000-04-28 2001-11-08 Mitsubishi Hitec Paper Flensburg Gmbh Recording materials and printing inks with a temporarily effective security feature

Also Published As

Publication number Publication date
AU2304584A (en) 1984-05-03

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