US3560238A - Method for printing visible characters with narrow band fluorescent inks - Google Patents

Method for printing visible characters with narrow band fluorescent inks Download PDF

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Publication number
US3560238A
US3560238A US641606A US3560238DA US3560238A US 3560238 A US3560238 A US 3560238A US 641606 A US641606 A US 641606A US 3560238D A US3560238D A US 3560238DA US 3560238 A US3560238 A US 3560238A
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US
United States
Prior art keywords
ink
components
inks
code
paper
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 - Lifetime
Application number
US641606A
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English (en)
Inventor
John L Rothery
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.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
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 American Cyanamid Co filed Critical American Cyanamid Co
Application granted granted Critical
Publication of US3560238A publication Critical patent/US3560238A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • B41M3/144—Security printing using fluorescent, luminescent or iridescent effects
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/22—Luminous paints
    • 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
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture

Definitions

  • Paper or other substrate is coated with a material which is capable of reacting with color forming components in the inks to form visible color images.
  • the ink is transparent so that ultraviolet light which is used for the determination of the code can pass into it without being absorbed or attenuated by colored pigments.
  • the visual component for optical reading forms a boundary under the fluorescent ink next to the paper and can be observed through the transparent ink. All of the advantages of sensitive response to ultraviolet light for code reading and the capability of visual reading are retained without offsetting disadvantages.
  • inks having components which fluoresce in diflerent colors, and particularly inks containing components which are of extremely narrow band fluorescence, such as chelates of lanthanide ions having an atomic number greater than 57, has made possible coding of symbols either without the possibility of visual reading or in addition thereto and without showing that there is a special code present which requires reading out under ultraviolet or similar shortwave radiation.
  • These inks are usually referred to as coded inks and form the subject matter of an application of Freeman and Halverson, Ser. No. 596,366, now Pat. 3,473,027 filed Oct. 14,- 1966, which is a continuation-in-part of an earlier application .Ser. No.
  • the preferred coded components are complexes of lanthanide ions, as referred to above, the complexes being formed with suitable organic or inorganic ligands, and are frequently associated with certain synergic agents which minimize transformation of electronic states excited by ultraviolet radia- 3,560,238 Patented Feb. 2, 1971 tion into a lower state of excitation without emitting radiation.
  • the coded inks are for the most part transparent as far as their code components are concerned and may be used with or without pigments which permit the symbols or messages to be read visually without requiring code reading by ultraviolet illumination.
  • Various other modifications have been described, for example, in which an ordinary symbol is typed and then small areas of the different coded inks superimposed onto it or adjacent to it.
  • the advantages of having a visible symbol as well as a coded one are very great in many cases, for example account numbers on bank checks and the like, and so in the past it has been common either to incorporate coloring matter in the various coded inks or to type or otherwise imprint a colored symbol which is then overprinted or associated with small areas of the different coded inks.
  • the presence of color in the ink results in strong absorption of ultraviolet radiation.
  • Paper or other substrate is used with a coating which is either transparent or very light colored, for example white, and which contains the second component that reacts with the component in the coded ink to produce a colored image.
  • This image is at the interface with the substrate, such as the paper base, and does not extend throughout the thin film of the coded ink itself.
  • the substrate such as the paper base
  • ultraviolet light can penetrate readily and so high efficiency in readout is made possible.
  • the colored image is only formed where the printed symbol is present, and the rest of the light or transparent coating above it permits ultraviolet light to enter freely.
  • the coloring material is in the coded ink itself ultraviolet light has to pass through this film, with the problems presented by attenuation, which have been discussed above in connection with the prior art.
  • the particular color-forming components form no part of the present invention, and any pairs of components which are transparent to ultraviolet light, at least as far as the component in the coded ink is concerned, may be used.
  • the present invention has not developed new com 3 ponents which react to form color, as this is a very common thing in color photography and a number'of processes for reproducing documents. Some of the component pairs are colorless chemicals which react together to form azo dyes.
  • color photography there is a slight distinction between color photography and the present invention because in many color photographic processes one of the components has to be in a form in which it will not react but only does so when reduced by silver formed in the photographic image.
  • certain nitroso compounds can be used which in contact with the silver of the photographic image are transformed into diazo compounds which are capable of reacting with the other component, which is usually a dye coupler that forms an azo dye of the particular color desired in the colored photograph.
  • the component I in the ink may be a component in the form in which it reacts directly with the other component in the coating on the paper or other substrate.
  • the component in the ink may not be similar to the components used in color photography, but in such a case, if it is not already in reactive form with the color coupler, there must be present in the coating on the paper a third component, such as a reducing agent, which transforms the component in the ink into a form in which it will react with the other component in the coating.
  • a third component such as a reducing agent
  • the two components may be in the ink and the material which on reduction or other chemical change reacts with one of the components may be in the coating on the paper.
  • the present invention permits a variant which is sometimes of importance. For example, if it is desired to imprint the message only in coded ink form so that it cannot be read visually, all that is necessary is to use ordinary paper or other substrate instead of the coated paper which has the other component which is capable of forming a colored image in contact with the imprinted symbol in the coded ink.
  • This is an advantage of the invention, but it should be understood that the combination of the invention requires both a coated substrate, such as paper, and the coded ink itself if it is desired to produce visually readable images.
  • the paper base is shown at 1 with a white or colorless coating 2 which contains a compound capable of reacting to produce color.
  • the symbol imprinted in colorless coded ink is shown at 3, and since the ink contains the other chemical or chemicals which form the colored image, a dark or colored image is formed at the interface between the ink film of the symbol and the white coating. Needless to say, the thicknesses of the various coatings in the drawing are greatly exaggerated for clarity.
  • paper is 5 coated with a white compound having a small amount of a color coupler, ferric sulfate or'ferric ammonium alum, and the coded ink with the necessary components which form the code for the particular symbol imprinted contains another chemical, tetra'butyl ammonium thiocyanate, which reacts with the chemical in the white coating to produce the colored image 4.
  • the narrow band fluorescing ink and its chemical component which reacts to form a color are transparent or substantially so to ultraviolet light so that on ultraviolet irradiation strong fluorescence in the colors corresponding to the code is produced.
  • particular coded inks are not per se the feature of the present invention.
  • the coded ink may have two components, one of them yttrium vanadate doped with dysprosium, which luminesces in the yellow, and the other yttrium vanadate doped with europium, which luminesces in the red.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Printing Methods (AREA)
  • Credit Cards Or The Like (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Luminescent Compositions (AREA)
US641606A 1967-05-26 1967-05-26 Method for printing visible characters with narrow band fluorescent inks Expired - Lifetime US3560238A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64160667A 1967-05-26 1967-05-26

Publications (1)

Publication Number Publication Date
US3560238A true US3560238A (en) 1971-02-02

Family

ID=24573081

Family Applications (1)

Application Number Title Priority Date Filing Date
US641606A Expired - Lifetime US3560238A (en) 1967-05-26 1967-05-26 Method for printing visible characters with narrow band fluorescent inks

Country Status (6)

Country Link
US (1) US3560238A (en:Method)
BE (1) BE715628A (en:Method)
DE (1) DE1300131B (en:Method)
FR (1) FR1574875A (en:Method)
GB (1) GB1217065A (en:Method)
NL (1) NL6804928A (en:Method)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928226A (en) * 1974-01-16 1975-12-23 Pitney Bowes Inc Multi-detectable ink compositions and method of use
US4015131A (en) * 1974-01-16 1977-03-29 Pitney-Bowes, Inc. Multi-detectable ink compositions and method of use
US5569317A (en) * 1994-12-22 1996-10-29 Pitney Bowes Inc. Fluorescent and phosphorescent tagged ink for indicia
US5863459A (en) * 1997-05-09 1999-01-26 Sun Chemical Corporation Fluorescent yellow azo pigments
US5904878A (en) * 1997-05-14 1999-05-18 Sun Chemical Corporation Fluorescent orange azo pigments
WO2002092707A1 (en) 2001-05-10 2002-11-21 Pitney Bowes Inc. Homogeneous photosensitive optically variable ink compositions for ink jet printing
US20080090726A1 (en) * 2006-08-29 2008-04-17 Jennifer Eskra Thermal transfer ribbon
JP2016052751A (ja) * 2014-09-04 2016-04-14 独立行政法人 国立印刷局 偽造防止印刷物

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL52911A0 (en) * 1976-10-26 1977-11-30 M & T Chemicals Inc Ink composition

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928226A (en) * 1974-01-16 1975-12-23 Pitney Bowes Inc Multi-detectable ink compositions and method of use
US4015131A (en) * 1974-01-16 1977-03-29 Pitney-Bowes, Inc. Multi-detectable ink compositions and method of use
US5569317A (en) * 1994-12-22 1996-10-29 Pitney Bowes Inc. Fluorescent and phosphorescent tagged ink for indicia
US5863459A (en) * 1997-05-09 1999-01-26 Sun Chemical Corporation Fluorescent yellow azo pigments
US5904878A (en) * 1997-05-14 1999-05-18 Sun Chemical Corporation Fluorescent orange azo pigments
WO2002092707A1 (en) 2001-05-10 2002-11-21 Pitney Bowes Inc. Homogeneous photosensitive optically variable ink compositions for ink jet printing
US20080090726A1 (en) * 2006-08-29 2008-04-17 Jennifer Eskra Thermal transfer ribbon
US7829162B2 (en) 2006-08-29 2010-11-09 international imagining materials, inc Thermal transfer ribbon
JP2016052751A (ja) * 2014-09-04 2016-04-14 独立行政法人 国立印刷局 偽造防止印刷物

Also Published As

Publication number Publication date
FR1574875A (en:Method) 1969-07-18
BE715628A (en:Method) 1968-10-16
GB1217065A (en) 1970-12-23
DE1300131B (de) 1969-07-31
NL6804928A (en:Method) 1968-11-27

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