EP1032498B1 - Materiaux d'impression thermosensibles et procede de verification d'authenticite - Google Patents

Materiaux d'impression thermosensibles et procede de verification d'authenticite Download PDF

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Publication number
EP1032498B1
EP1032498B1 EP99944434A EP99944434A EP1032498B1 EP 1032498 B1 EP1032498 B1 EP 1032498B1 EP 99944434 A EP99944434 A EP 99944434A EP 99944434 A EP99944434 A EP 99944434A EP 1032498 B1 EP1032498 B1 EP 1032498B1
Authority
EP
European Patent Office
Prior art keywords
heat
recording material
sensitive recording
dye
material according
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
EP99944434A
Other languages
German (de)
English (en)
Other versions
EP1032498A1 (fr
Inventor
Erich Kranz
Karsten SÜSSENBACH
Gerhard Stork
Michael Reimann
Wolfgang Wagner
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.)
Mitsubishi HiTech Paper Flensburg GmbH
Original Assignee
Mitsubishi HiTech Paper Flensburg GmbH
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
Priority claimed from DE1998142866 external-priority patent/DE19842866A1/de
Priority claimed from DE1998142867 external-priority patent/DE19842867C2/de
Application filed by Mitsubishi HiTech Paper Flensburg GmbH filed Critical Mitsubishi HiTech Paper Flensburg GmbH
Publication of EP1032498A1 publication Critical patent/EP1032498A1/fr
Application granted granted Critical
Publication of EP1032498B1 publication Critical patent/EP1032498B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D21H21/48—Elements suited for physical verification, e.g. by irradiation
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/41—Base layers supports or substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/42—Intermediate, backcoat, or covering layers
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
    • B41M2205/36—Backcoats; Back layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
    • B41M5/323—Organic colour formers, e.g. leuco dyes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/42—Intermediate, backcoat, or covering layers
    • B41M5/423—Intermediate, backcoat, or covering layers characterised by non-macromolecular compounds, e.g. waxes

Definitions

  • the invention relates to heat-sensitive recording materials with security features, comprising a carrier paper with a recording layer arranged on one side, the color formers and organic reacting with each other under the influence of heat Contains color acceptors.
  • the invention further relates to methods for checking authenticity of the recording materials according to the invention.
  • Heat-sensitive recording materials have been known for a long time. Usually these materials are used to record femcopies that are public Telephone networks - so-called fax procedures - can be sent. Gradually in importance gain additional areas of application for heat-sensitive recording materials through their use as transfer forms or checks, diplomas, certificates, Package insert for pharmaceutical products, receipts for all kinds of games of chance, stamps, Receipts, parking tickets from parking machines as well as admission tickets and tickets.
  • DE 2518 871 A1 discloses as a security feature for coated papers that two substances of the same type, which contain at least one color former as an azo compound and at least one dye or pigment, are applied in or onto the backing paper.
  • a reagent is applied to the paper by means of a stamp, felt pen or roller device, the substance in or on the carrier paper reacting together with the reagent in the form of color formation.
  • the security feature described in this way can be combined with other security features such as watermarks in accordance with this document.
  • Security features in the manner of added dyes in the paper pulp or on the paper surface are furthermore described in DE 296 17 106 U 1 with regard to the addition of pigments based on anthraquinone and in EP 0 072 481 B1 with respect to an admixture of 2- (4'-amino) -3'-sulfophenyl) -6-methyl-benzothiazole-7-sulfonic acid or its salts are disclosed. All of the last-mentioned proposals do not relate to the field of heat-sensitive recording materials. The use of azine dye as a security feature is not disclosed.
  • DE 27 47 349 C 2 for counterfeit-proof papers which are to be used in particular as payment instructions to be filled in by hand, discloses the use of pyrensulfonic acids or their metal salts, which are either added to the paper pulp or with which the paper web is impregnated, from which full-surface coloring of the paper surface results.
  • EP 0 844 097 A1 discloses a heat-sensitive recording material in which, as a first security feature, a latent image is printed in places on the back by means of a security ink containing a fluorescent reagent.
  • the security ink contains a water-repellent.
  • the security ink containing the fluorescent reagent used as pigment or dye and the water-repellent is contained or dispersed in an aqueous carrier which, in addition to these components, also contains binders, such as thermoplastic resins, which are intended to improve image stability.
  • binders such as thermoplastic resins
  • the present invention now seeks to provide heat sensitive recording materials where multiple, with the help of simple facilities available everywhere Possibilities for examining the authenticity of the paper used are possible are.
  • the invention sees a further object in the development of a security feature, that is far more clearly than a full-surface preparation a test for authenticity of the paper used.
  • the invention wants effective protection before attempting counterfeiting.
  • the invention also sees an object in which Production of a heat-sensitive recording material on those of the pulp components to be dispensed with, such as fluorescent fibers result in the problems within the production process mentioned at the beginning can.
  • the invention sees according to its first and particularly simple Embodiment a heat-sensitive recording material with security feature which comprises a base paper having a recording layer arranged on one side, the color formers and organic reacting with each other under the influence of heat Contains color acceptors.
  • the heat-sensitive recording material is marked in that as a security feature a water-soluble fluorescent under UV radiation Dye without binder in a regular or irregular, in daylight invisible pattern so on the entire surface of the page that of a recording layer opposite side, i.e. the back, is applied that the entire surface has the pattern.
  • An irregular pattern formation in the sense of the present invention preferably corresponds a fine-grained structure that, in other words, is called speckling can be, while a regular pattern is preferably a stripe Structure corresponds.
  • speckling can be, while a regular pattern is preferably a stripe Structure corresponds.
  • the acidic or neutral pH range the one exposed to the dye sees Reverse with the naked eye viewed in daylight slightly colored.
  • the advantage of the water-soluble, without binder applied dye according to the Embodiment above is that the attachment of preprints is not on the problems encountered as in the binder-containing materials known from the prior art or coatings containing water repellents are known.
  • preprints include, for example, flexographic or Offset printing, in particular dry or waterless offset printing, applied prints, How to understand form labels, for example, in the case of which subsequent intended use Use the form fields to be filled in using a thermal printer.
  • those dyes have been found to be suitable with regard to the above-mentioned embodiments of the invention which, as part of a security check by applying an alkaline substance to the back of the recording material according to the invention, lead to a color which is fluorescent even in daylight, in particular also stable.
  • Pyrene sulfonate-based dyes are to be mentioned as a particularly preferred class of dyes.
  • the water-soluble dye which fluoresces under UV radiation is preferably with a weight per unit area of from 0.01 to 40 mg / m 2 , very particularly preferably with a weight per unit area of 0.05 to 7.5 mg / m 2 on the side facing the opposite side provided with a recording layer, applied.
  • the invention sees a heat-sensitive Recording material with security features in front of which is a backing paper with a recording layer arranged on one side, which under the action contains heat-reacting color formers and organic color acceptors and that is characterized in that as a first security feature one with a bare Eye-invisible water-insoluble azine dye is incorporated into the backing paper with surface wetting of the side opposite the recording layer of the recording material with an organic solvent or an acid striking coloration, and that as a second security feature on that of the recording layer opposite side of the backing paper, i.e. one on the back Layer is applied with a weakly visible in the acidic or neutral pH range Pyrene suffonate based dye.
  • the pyrene sulfonate-based dye comes into contact with an alkaline substance a color reaction that leads to a fluorescent in daylight stable color leads.
  • the pyrene sulfonate dye when it comes to avoiding printability problems, without binders applied, however, a joint application with a binder, e.g. possible with a starch line.
  • the azine dye is preferably present in an amount of 0.005 to 0.1% by weight, very particularly preferably incorporated into the backing paper in an amount of 0.01 to 0.03% by weight.
  • azine dyes within the meaning of the present invention are the pyrazine ring (Paradiazine ring) dyes marked with attached aromatic kemen understand.
  • the weight per unit area of the dye in the layer which is applied to the side of the carrier paper opposite the recording layer is between 0.01 and 40 mg / m 2 and particularly preferably between 0.05 and 7.5 mg / m 2 .
  • the invention is particularly preferred as the most tamper-proof embodiment heat-sensitive recording material with security features on the backing paper with a recording layer arranged on one side, which under the action Color reacting with heat and organic color acceptors contains and which is characterized in that as a first security feature one with bioßem Eye-invisible water-insoluble azine dye incorporated into the backing paper is that in the case of surface wetting that opposite the recording layer Side of the recording material with an organic solvent or an acid a striking coloration, and that as a second security feature an under UV radiation fluorescent water-soluble dye without a binder in a regular or irregular patterns that are invisible in daylight on the surface the side opposite to the side provided with a recording layer is that the entire surface has the pattern.
  • the one on the side opposite to the side to be recorded one below Have UV radiation fluorescent water-soluble dye is the implementation a first authenticity check is possible in such a way that the intended for recording Side opposite side is viewed under UV radiation, which at Patterns that are not visible in daylight can be seen.
  • the recording paper according to the invention according to claim 6 the pyrene sulfonate based dye on the side which faces the side to be recorded, in a regular or irregular manner Pattern applied, this pattern can be seen under UV radiation.
  • a particularly preferred method for checking the authenticity of all of the invention Recording papers sees the surface wetting of the page, that of the recording opposite side, especially when using a test pen or a comparable simple device with an alkaline substance, whereby a fluorescent, stable color is visible in daylight. Because in the usual Ink eraser pens contain alkaline substances are also tried in this way Attempts to counterfeit are recognizable.
  • Another method for authenticity checking with regard to the recording papers according to of claims 6 and 11 provides that a surface wetting of the layer that the Recording layer opposite, with a mixture of a primary alcohol, a secondary alcohol and an acid using a test pen, sponge, stamp or a comparable simple technical device in the smallest possible amount is made.
  • a striking coloring of the wetted surface indicates authenticity of the examined heat-sensitive recording material, where possible one of the color reaction of the azine dye with the organic solvent or acid corresponding color reaction in the recording layer should be avoided.
  • Wood-free papers with any area-related are preferably used as backing papers Mass used.
  • the recording layer is optionally applied to a primer.
  • One side of the carrier paper opposite the recording layer applied layer preferably consists of a starch.
  • a commercially available wood-free paper which is intended for the production of security documents, such as travel documents or receipts, and has a mass per unit area of 65 g / m 2 , is essentially made on the back with a starch preparation and on the front with a layer intended for applying the heat-sensitive recording layer Oil-absorbing pigment and binder existing intermediate layer.
  • An irregular pattern in the manner of a fine-grained structure is then applied to the dried starch preparation by means of an aqueous solution of a pyrene sulfonate-based dye.
  • the mass per unit area of the dye applied is 2.8 mg / m 2 .
  • the pattern shows a greenish color
  • UV irradiation of 360 nm the pattern can be seen in a bluish color.
  • the back of the papers has a color that is barely visible to the naked eye.
  • the cellulose entry for a carrier paper to be produced on a Fourdrinier paper machine with a mass per unit area of 80 g / m 2 of azine dye with an amount of 0.015% by weight of commercial goods based on the "atro" weight of the carrier paper is entered.
  • the starch screed to be applied to the back of the backing paper contains a pyrene sulfonate which is present in the back of the starch screed with a mass per unit area of 7 mg / m 2 .
  • a heat-sensitive recording layer is applied to a pigment precoat applied on the front.
  • a starch screed is applied on the back and a pigment precoat on the front.
  • a heat-sensitive recording layer is first applied to the pigment precoat and then dried.
  • a coating with a pyrene sulfonate with a mass per unit area of 2.9 mg / m 2 is applied to the starch screed applied on the back.
  • a felt pen is produced, which is a test substance consisting of a mixture of 70% lactic acid, 15% Contains ethanol and 15% isopropyl alcohol. With the help of this test substance it is possible by surface wetting the opposite side of the recording layer Recording material to cause coloration by dissolving the azine dye. there there is no corresponding color reaction of the recording layer. This would be adjust when using solvents as well as when applying too much the test substance.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Credit Cards Or The Like (AREA)
  • Paper (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)

Claims (15)

  1. Matériau d'enregistrement thermosensible avec élément de sécurité, comprenant un papier support portant, sur une face, une couche d'enregistrement qui contient des agents chromogènes et des accepteurs de couleur organiques réagissant les uns avec les autres sous l'action de la chaleur, caractérisé par le fait qu'un colorant hydrosoluble, fluorescent sous rayonnement UV est appliqué, en tant qu'élément de sécurité, sans liant selon un motif régulier ou irrégulier, invisible à la lumière du jour, sur la face opposée à celle pourvue de la couche d'enregistrement, de telle manière que la totalité de la surface soit couverte par ce motif.
  2. Matériau d'enregistrement thermosensible selon la revendication 1, caractérisé par le fait que le colorant hydrosoluble lorsqu'il est mis en contact avec une substance alcaline, forme une couleur fluorescente à la lumière du jour.
  3. Matériau d'enregistrement thermosensible selon l'une des revendications 1 ou 2, caractérisé par le fait que le colorant hydrosoluble est appliqué à raison de 0,01 à 40 mg/m2.
  4. Matériau d'enregistrement thermosensible selon l'une des revendication 1 à 3, caractérisé par le fait que le colorant hydrosoluble est appliqué à raison de 0,05 à 7,5 mg/m2.
  5. Matériau d'enregistrement thermosensible selon l'une des revendications 1 à 4, caractérisé par le fait que le colorant hydrosoluble est un colorant à base de pyrènesulfonate.
  6. Matériau d'enregistrement thermosensible comportant des éléments de sécurité, comprenant un papier support portant, sur une face, une couche d'enregistrement qui contient des agents chromogènes et des accepteurs de couleur organiques réagissant les uns avec les autres sous l'action de la chaleur, caractérisé par le fait qu'il comprend, en tant que premier élément de sécurité, un colorant azinique insoluble dans l'eau et invisible à l'oeil nu, incorporé dans le papier support, lequel colorant azinique forme, lorsqu'on mouille la face du matériau d'enregistrement opposée à celle portant la couche d'enregistrement avec un solvant organique ou avec un acide, une coloration facilement visible, et par le fait qu'il comprend, en tant que second élément de sécurité, une couche appliquée sur la face du papier support opposée à celle portant la couche d'enregistrement, laquelle couche contient un colorant à base de pyrènesulfonate, faiblement visible à pH acide à neutre, et qui, lorsqu'il vient en contact avec une substance alcaline développe une couleur solide, fluorescente à la lumière du jour.
  7. Matériau d'enregistrement thermosensible selon la revendication 6, caractérisé par le fait qu'il comprend un colorant azinique incorporé dans le papier support en une quantité comprise entre 0,005 et 0,1 % en poids.
  8. Matériau d'enregistrement thermosensible selon l'une des revendications 6 et 7, caractérisé par le fait qu'il comprend un colorant azinique incorporé dans le papier support en une quantité comprise entre 0,01 et 0,03 % en poids.
  9. Matériau d'enregistrement thermosensible selon l'une des revendications 6 à 8, caractérisé par le fait que le colorant à base de pyrènesulfonate est appliqué à raison de 0,01 à 40 mg/m2.
  10. Matériau d'enregistrement thermosensible selon l'une des revendications 6 à 9, caractérisé par le fait que le colorant à base de pyrènesulfonate est appliqué à raison de 0,05 à 7,5 mg/m2.
  11. Matériau d'enregistrement thermosensible selon l'une des revendications 1 à 10, caractérisé par le fait qu'il comprend, en tant que premier élément de sécurité, un colorant azinique insoluble dans l'eau et invisible à l'oeil nu, incorporé dans le papier support, lequel colorant azinique développe, lorsqu'on mouille la face du matériau d'enregistrement opposée à celle portant la couche d'enregistrement avec un solvant organique ou avec un acide, une coloration facilement visible, et par le fait qu'il comprend, en tant que second élément de sécurité, un colorant hydrosoluble fluorescent sous rayonnement UV appliqué, sans liant, selon un motif régulier ou irrégulier invisible à la lumière du jour, sur la face opposée à celle portant la couche d'enregistrement, de telle manière que la totalité de la surface soit couverte par ce motif.
  12. Procédé de vérification de l'authenticité d'un matériau d'enregistrement thermosensible selon l'une des revendications 6 à 11, caractérisé par le fait que l'on mouille la surface de la couche opposée à la couche d'enregistrement avec un mélange d'un alcool primaire, d'un alcool secondaire et d'un acide.
  13. Procédé de vérification de l'authenticité d'un matériau d'enregistrement thermosensible selon la revendication 12, caractérisé par le fait que le mouillage se fait à l'aide d'un stylo-testeur, d'une éponge, d'un tampon ou d'un dispositif simple similaire.
  14. Procédé de vérification de l'authenticité d'un matériau d'enregistrement thermosensible selon l'une des revendications 2 et 6 à 11 ainsi que 3 à 5 dans la mesure où elles dépendent de la revendication 2, caractérisé par le fait que l'on mouille la surface de la couche opposée à la couche d'enregistrement avec une substance alcaline.
  15. Procédé de vérification de l'authenticité d'un matériau d'enregistrement thermosensible selon la revendication 14, caractérisé par le fait que le mouillage se fait au moyen d'un stylo-testeur ou d'un dispositif simple similaire.
EP99944434A 1998-09-19 1999-08-19 Materiaux d'impression thermosensibles et procede de verification d'authenticite Expired - Lifetime EP1032498B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE1998142866 DE19842866A1 (de) 1998-09-19 1998-09-19 Wärmeempfindliches Aufzeichnungsmaterial mit Sicherheitsmerkmal
DE19842866 1998-09-19
DE19842867 1998-09-19
DE1998142867 DE19842867C2 (de) 1998-09-19 1998-09-19 Wärmeempfindliches Aufzeichnungsmaterial und ein Verfahren zur Authentizitätsprüfung
PCT/EP1999/006060 WO2000016986A1 (fr) 1998-09-19 1999-08-19 Materiaux d'impression thermosensibles et procede de verification d'authenticite

Publications (2)

Publication Number Publication Date
EP1032498A1 EP1032498A1 (fr) 2000-09-06
EP1032498B1 true EP1032498B1 (fr) 2002-07-24

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EP99944434A Expired - Lifetime EP1032498B1 (fr) 1998-09-19 1999-08-19 Materiaux d'impression thermosensibles et procede de verification d'authenticite

Country Status (7)

Country Link
US (1) US6632773B1 (fr)
EP (1) EP1032498B1 (fr)
JP (1) JP4372353B2 (fr)
AT (1) ATE220997T1 (fr)
DE (1) DE59902110D1 (fr)
ES (1) ES2181470T3 (fr)
WO (1) WO2000016986A1 (fr)

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EP1925459B1 (fr) * 2006-11-24 2014-03-12 Mitsubishi HiTec Paper Europe GmbH Procédé de fabrication d'un matériel d'enregistrement sensible à la chaleur doté d'une marque d'authentification

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US6803344B2 (en) * 2001-12-21 2004-10-12 Ncr Corporation Thermal paper with preprinted indicia
US7166154B2 (en) * 2003-11-06 2007-01-23 Hewlett-Packard Development Company, L.P. System and a method for an edible, optically invisible ink
CA2559011C (fr) * 2004-04-02 2014-06-10 Curwood, Inc. Procede d'emballage ameliore qui entraine et maintient la couleur rouge preferee de viande fraiche
WO2005120854A1 (fr) * 2004-06-11 2005-12-22 Ahlstrom Kauttua Oy Materiau de securite multicouche et son procede de production
US8330122B2 (en) * 2007-11-30 2012-12-11 Honeywell International Inc Authenticatable mark, systems for preparing and authenticating the mark
DE102009017444A1 (de) 2009-04-15 2010-10-21 Sension, Biologische Detektions- Und Schnelltestsysteme Gmbh Wärmeempfindliches Aufzeichnungsmaterial mit Sicherheitsmerkmal
EP2329955B1 (fr) * 2009-12-01 2012-07-25 Mitsubishi HiTec Paper Europe GmbH Matériel d'enregistrement sensible à la chaleur doté d'une marque d'authenticité

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FR2365656A1 (fr) 1976-05-25 1978-04-21 Arjomari Prioux Papier de securite
DE3132146A1 (de) 1981-08-14 1983-03-03 Bayer Ag, 5090 Leverkusen Faelschungssicheres papier
FR2566440B1 (fr) 1984-06-22 1988-07-22 Jalon Michel Fibres de securite et autres matieres rendues luminescentes par un procede de teinture, leurs procedes de realisation et leurs applications
US5630869A (en) 1988-01-12 1997-05-20 Sicipa Holding S.A. Reversibly photochromic printing inks
US5308824A (en) * 1990-09-28 1994-05-03 Mitsubishi Paper Mills Limited Recording material
DE19501289A1 (de) 1995-01-18 1996-07-25 Feldmuehle Ag Stora Wärmeempfindliches Aufzeichnungsmaterial und seine Verwendung
DE29617106U1 (de) 1996-10-01 1997-02-27 Papierfabrik Schoeller & Hoesch GmbH, 76593 Gernsbach Papier
EP0844097B1 (fr) * 1996-11-21 2001-07-18 Ncr International Inc. Papier thermique avec des caractéristiques de sécurité et encre de sécurité à cet effet

Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP1925459B1 (fr) * 2006-11-24 2014-03-12 Mitsubishi HiTec Paper Europe GmbH Procédé de fabrication d'un matériel d'enregistrement sensible à la chaleur doté d'une marque d'authentification

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JP2002526302A (ja) 2002-08-20
US6632773B1 (en) 2003-10-14
WO2000016986A1 (fr) 2000-03-30
EP1032498A1 (fr) 2000-09-06
JP4372353B2 (ja) 2009-11-25
ES2181470T3 (es) 2003-02-16
DE59902110D1 (de) 2002-08-29
ATE220997T1 (de) 2002-08-15

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