CA2138863A1 - Composition for Invisible Ink Responsive to Infrared Light - Google Patents

Composition for Invisible Ink Responsive to Infrared Light

Info

Publication number
CA2138863A1
CA2138863A1 CA2138863A CA2138863A CA2138863A1 CA 2138863 A1 CA2138863 A1 CA 2138863A1 CA 2138863 A CA2138863 A CA 2138863A CA 2138863 A CA2138863 A CA 2138863A CA 2138863 A1 CA2138863 A1 CA 2138863A1
Authority
CA
Canada
Prior art keywords
invisible
composition
infrared light
invisible ink
responsive
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.)
Granted
Application number
CA2138863A
Other languages
French (fr)
Other versions
CA2138863C (en
Inventor
Judith D. Auslander
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.)
Pitney Bowes Inc
Original Assignee
Judith D. Auslander
Pitney Bowes Inc.
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 Judith D. Auslander, Pitney Bowes Inc. filed Critical Judith D. Auslander
Publication of CA2138863A1 publication Critical patent/CA2138863A1/en
Application granted granted Critical
Publication of CA2138863C publication Critical patent/CA2138863C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S260/00—Chemistry of carbon compounds
    • Y10S260/38—Ink

Abstract

An invisible ink has been discovered that utilizes an invisible or almost invisible substituted phthalocyanine dye in combination with selected waxes and resins. The resulting ink is one that has use in thermal printing and is transparent or almost transparent in white light, but is responsive to infra-redlight in the range of 720 to 1000 nm. The preferred waxes are polyethylene wax, natural paraffin wax and carnauba wax, and the preferred resin is ethyl vinyl acetate polymer.
CA002138863A 1994-01-12 1994-12-22 Composition for invisible ink responsive to infrared light Expired - Fee Related CA2138863C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US15906594A 1994-01-12 1994-01-12
US08/159,065 1994-01-12
US08/310,905 US5684069A (en) 1994-01-12 1994-09-22 Composition for invisible ink responsive to infrared light
US08/310,905 1994-09-22

Publications (2)

Publication Number Publication Date
CA2138863A1 true CA2138863A1 (en) 1995-07-13
CA2138863C CA2138863C (en) 1998-12-22

Family

ID=26855622

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002138863A Expired - Fee Related CA2138863C (en) 1994-01-12 1994-12-22 Composition for invisible ink responsive to infrared light

Country Status (4)

Country Link
US (1) US5684069A (en)
EP (1) EP0663429B1 (en)
CA (1) CA2138863C (en)
DE (1) DE69517607T2 (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6766953B1 (en) * 1992-05-01 2004-07-27 Hewlett-Packard Development Company, L.P. Tape indicia on clear film media
EP0732049B1 (en) * 1995-03-17 1998-05-06 Mitsui Toatsu Chemicals, Incorporated Covering material for plant growth control
JP3068483B2 (en) * 1996-02-08 2000-07-24 株式会社東芝 Pattern reading method and optical signal reading device
US5759254A (en) * 1996-07-18 1998-06-02 Ciba Specialty Chemicals Corporation Substituted phthalocyanines
US6149719A (en) * 1998-10-28 2000-11-21 Hewlett-Packard Company Light sensitive invisible ink compositions and methods for using the same
US6644764B2 (en) 1998-10-28 2003-11-11 Hewlett-Packard Development Company, L.P. Integrated printing/scanning system using invisible ink for document tracking
US6541100B1 (en) * 1998-12-31 2003-04-01 Eastman Kodak Company Imaged medium comprising sensor-readable indicia
US7079712B1 (en) 1999-05-25 2006-07-18 Silverbrook Research Pty Ltd Method and system for providing information in a document
US6775381B1 (en) 1999-07-19 2004-08-10 Eastman Kodak Company Method and apparatus for editing and reading edited invisible encodements on media
US6542622B1 (en) 1999-08-30 2003-04-01 Eastman Kodak Company Methods and articles for determining invisible ink print quality
US6688525B1 (en) 1999-09-22 2004-02-10 Eastman Kodak Company Apparatus and method for reading a coded pattern
US6969549B1 (en) 1999-11-19 2005-11-29 Hewlett-Packard Development Company, L.P. Techniques to prevent leakage of fluorescing signals through print media or indicia tape
US6386671B1 (en) 1999-12-29 2002-05-14 Hewlett-Packard Company Orientation independent indicia for print media
US6431448B1 (en) 2000-05-11 2002-08-13 Eastman Kodak Company Keyed data-and-print album page
WO2002020639A1 (en) * 2000-09-08 2002-03-14 Isotag Technology, Inc. Monomeric dye inkjet printing ink formulations for invisible marking/identification
US6881915B2 (en) * 2001-01-31 2005-04-19 Spectra Systems Corporation Contrast enhancing marking system for application of unobtrusive identification and other markings
GB0126103D0 (en) * 2001-10-31 2002-01-02 Avecia Ltd Ink compositions
US6902265B2 (en) 2002-06-28 2005-06-07 Pitney Bowes Inc. Method for printing high information density machine-readable composite images
US6948660B2 (en) * 2002-12-30 2005-09-27 Pitney Bowes Inc. Method for improving the readability of composite images
US6905538B2 (en) 2002-12-30 2005-06-14 Pitney Bowes Inc. Invisible ink jet inks
US7821675B2 (en) * 2003-04-04 2010-10-26 Angstrom Technologies, Inc. Methods and ink compositions for invisibly printed security images having multiple authentication features
US7125644B2 (en) * 2003-08-11 2006-10-24 Hewlett-Packard Development Company, L.P. Systems and methods for storing data on an optical disk
US7369681B2 (en) * 2003-09-18 2008-05-06 Pitney Bowes Inc. System and method for tracking positions of objects in space, time as well as tracking their textual evolution
CN1860192A (en) * 2004-08-19 2006-11-08 桑福德有限合伙人公司 Decoder system
US7198834B2 (en) 2005-03-22 2007-04-03 Hewlett-Packard Development Company, L.P. Imaging media including interference layer for generating human-readable marking on optical media
ATE420144T1 (en) 2005-11-25 2009-01-15 Sicpa Holding Sa IR-ABSORBING INTAGLIO INK
WO2009026360A2 (en) 2007-08-21 2009-02-26 Angstrom Technologies, Inc Stable emissive toner composition system and method
MX365504B (en) * 2011-02-01 2019-06-05 Australia Reserve Bank Transparent infrared absorbing materials.
CN103493151A (en) 2011-02-23 2014-01-01 迪睿合电子材料有限公司 Transparent electroconductive film, information input device, and electronic instrument
WO2013063593A1 (en) 2011-10-27 2013-05-02 Chromatic Technologies, Inc. Photochromic inks
DE102013100662B4 (en) 2013-01-23 2018-09-20 Deutsche Institute Für Textil- Und Faserforschung Denkendorf Marking composition, its use and articles containing the same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3875199A (en) * 1966-09-02 1975-04-01 Polaroid Corp Metal 1,2 dithiolenes
US3999838A (en) * 1975-06-05 1976-12-28 International Business Machines Corporation Beam addressed liquid crystal cells
EP0340898B1 (en) * 1988-04-05 1996-09-04 Zeneca Limited Security coding
JPH02209975A (en) * 1988-10-28 1990-08-21 Pentel Kk Composition for optical reading
EP0420613B2 (en) * 1989-09-26 2001-01-03 Toyo Ink Manufacturing Co., Ltd. Data-written medium
US5084205A (en) * 1990-11-19 1992-01-28 Pitney Bowes Inc. Ink solution comprising red flourescent materials with a non red visual color
JPH04307282A (en) * 1991-04-04 1992-10-29 Seiko Epson Corp Color thermal transfer recording material
JPH0585062A (en) * 1991-09-27 1993-04-06 Pentel Kk Production of thermal transfer recording material
DE4202038A1 (en) * 1992-01-25 1993-07-29 Basf Ag USE OF A LIQUID CONTAINING IR DYES AS PRINTING INK

Also Published As

Publication number Publication date
EP0663429A1 (en) 1995-07-19
EP0663429B1 (en) 2000-06-28
US5684069A (en) 1997-11-04
DE69517607D1 (en) 2000-08-03
DE69517607T2 (en) 2001-02-22
CA2138863C (en) 1998-12-22

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