EP0176403A1 - Fraud-preventing method for security papers - Google Patents

Fraud-preventing method for security papers Download PDF

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Publication number
EP0176403A1
EP0176403A1 EP85401685A EP85401685A EP0176403A1 EP 0176403 A1 EP0176403 A1 EP 0176403A1 EP 85401685 A EP85401685 A EP 85401685A EP 85401685 A EP85401685 A EP 85401685A EP 0176403 A1 EP0176403 A1 EP 0176403A1
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EP
European Patent Office
Prior art keywords
ink
layer
varnish
signature
fraud
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.)
Withdrawn
Application number
EP85401685A
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German (de)
French (fr)
Inventor
Georges Peronneau
Bernard Chalus
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SOTIMAG
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SOTIMAG
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Publication date
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Publication of EP0176403A1 publication Critical patent/EP0176403A1/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • 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
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/318—Signatures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/387—Special inks absorbing or reflecting ultraviolet light
    • B42D2033/04—
    • B42D2033/20—
    • B42D2033/30—
    • B42D2035/26—
    • 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
    • Y10S283/00—Printed matter
    • Y10S283/904—Credit card
    • 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
    • Y10S428/914—Transfer or decalcomania
    • Y10S428/915—Fraud or tamper detecting
    • 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
    • Y10S428/916—Fraud or tamper detecting
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24851—Intermediate layer is discontinuous or differential
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24851—Intermediate layer is discontinuous or differential
    • Y10T428/24868—Translucent outer layer
    • Y10T428/24876—Intermediate layer contains particulate material [e.g., pigment, etc.]
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
    • Y10T428/24901—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material including coloring matter
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree

Definitions

  • the present invention relates to an anti-fraud method for a document of value. This process can advantageously be used on all documents having a monetary value such as credit cards, transport tickets, etc.
  • the object of the invention is a method for overcoming the above drawback and detecting an attempted fraud, while making the imitation of cards more complex.
  • FIG. 1 represents a partial view of a valuable document
  • Figure 2 shows a sectional view of the different layers of the valuable document.
  • FIG. 1 represents a partial view of a valuable document obtained by the method according to the invention such as for example, a credit card, this credit card being constituted by a PVC substrate 1 and comprising a rectangular location allowing '' welcome the signature of the holder.
  • This rectangular location is constituted by a first layer of ink 2, this ink including a pigment giving it a preferably white color and loaded with a product ensuring it a certain porosity.
  • the ink may consist of a vinyl ink and charged with a titanium dioxide. This ink is marketed by Etableaus DUBUIT under the name Blanc 1400.
  • this first layer 2 On certain areas of this first layer 2 a porous mat varnish 3 is deposited in which a powder of rare earth chelate, or esculin type has been dissolved, making this varnish fluoresce with the desired color. This fluorescence appears in ultraviolet light but does not appear in daylight.
  • This layer of varnish 3 can be deposited for example in the form of initials in character of a certain width and covering certain areas of the signature location.
  • a watermark 4 so that it in some areas is only on the first ink layer and in other areas or on the varnish layer as we can see in Figure 1.
  • This watermark 4 is printed by screen printing using a second pigmented vinyl ink.
  • the transparent matt varnish is constituted by the varnish marketed by the DUBUIT establishments under the reference Vernis Mat 1400.
  • the product dissolved in the varnish will be chosen according to the desired fluorescence when the layer is subjected to ultraviolet. So if we want a green color we will use a terbium chelate, in the case where we want to obtain a yellow fluorescence we will use a dysprosium chelate, and in the case where we want to obtain a blue fluorescence we will use a product such as esculin. These different products have the property of not losing their fluorescence over time. Finally, a signature 5 is affixed on the space reserved for the signature, with a felt pen comprising an indelible ink to a product such as that marketed under the brand CORRECTOR.
  • felt pens can advantageously be made up of the felts sold by the company STAEDLER under the reference 303 or the company MARKANA under the reference 33.
  • the ink of layer 2 will be chosen so that it has a higher porosity to that of varnish 3.
  • the adhesion of varnish 3 must be less than the adhesion of the signature ink in the support ink layer 2.
  • the signature ink deposited on the fluorescent layer will leave with the fluorescent layer and before the parts of the signature deposited on the support layer 2.
  • the support ink layer 2 and the layer of varnishes have different porosities and that the adhesion of the felt ink on the support layer 2 is better than the adhesion of the varnish on the support ink layer. Consequently, fraud can be detected by noting that the fluorescent parts no longer appear in the desired locations. This even if the fraudster succeeded in putting a signature on the card.
  • the succession of the different stages of the process and the association of the different products making it possible to constitute these stages makes it more difficult to counterfeit the cards or documents of value thus constituted.

Abstract

La présente invention concerne un procédé antifraude pour document de valeur constitué par substrat P.V.C. comportant un emplacement de signature sur ce substrat, et consistant à déposer une couche d'encre de support 2, incluant un pigment et chargée d'un produit lui assurant une certaine porosité, sur l'emplacement de signature; déposer sur certaines zones de la première couche d'encre 2 un vernis 3 transparent et poreux incluant en dissolution de la poudre permettant d'obtenir aux ultraviolets une fluorescence de la couleur souhaitée; imprimer par sérigraphie au moyen d'une deuxième encre 4 vinylique pigmentée un filigrane sur des zones constituées soit par la première couche d'encre 2 soit par la couche de vernis 3. Apposer la signature du titulaire du document à l'aide d'un stylo feutre à encre indélébile à un produit tel que celui commercialisé sous la marque CORRECTOR. Ce procédé permet de rendre décelable toute tentative réussie de fraude tout en augmentant la difficulté de reproduction des documents.The present invention relates to an anti-fraud process for a document of value constituted by a PVC substrate comprising a signature location on this substrate, and consisting in depositing a layer of support ink 2, including a pigment and charged with a product ensuring it a certain porosity, on the signature site; depositing on certain areas of the first ink layer 2 a transparent and porous varnish 3 including, in dissolution of the powder, making it possible to obtain ultraviolet fluorescence of the desired color; print by screen printing with a second pigmented vinyl ink 4 a watermark on areas formed either by the first layer of ink 2 or by the layer of varnish 3. Affix the signature of the document holder using a felt-tip pen with indelible ink to a product such as the one marketed under the brand CORRECTOR. This process makes it possible to detect any successful attempt at fraud while increasing the difficulty of reproducing documents.

Description

La présente invention concerne un procédé antifraude pour document de valeur. Ce procédé peut avantageusement être utilisé sur tous documents présentant une valeur monétaire tels que cartes de crédit, tickets de transport, etc.The present invention relates to an anti-fraud method for a document of value. This process can advantageously be used on all documents having a monetary value such as credit cards, transport tickets, etc.

Il est déjà connu pour éviter la fraude et surtout la contrefaçon des documents présentant une valeur monétaire de les pourvoir d'une part d'une surface permettant de recueillir la signature du titulaire et d'autre part d'imprimer sur le document ou certaines zones du document un filigrane. Dans le cas ou le filigrane recouvre la partie de signature celui-ci rend la fraude plus difficile. En effet dans le cas où l'encre de la signature est difficilement effaçable le fraudeur sera amené à faire disparaître le filigrane en même temps que la signature. Ceci l'obligera à réimprimer un filigrane sur la carte pour pouvoir réutiliser cette carte. Par contre dans le cas où l'encre de la signature disparaît facilement avec un solvant sans que le filigrane soit altéré le fraudeur pourra changer la signature et réutiliser la carte. Dans ce cas aucun moyen ne permet jusqu'à présent de s'apercevoir que la carte a fait l'objet d'une tentative de fraude.It is already known to avoid fraud and especially counterfeiting of documents having a monetary value to provide them on the one hand with a surface allowing to collect the signature of the holder and on the other hand to print on the document or certain areas of the document a watermark. In the case where the watermark covers the signature part, this makes fraud more difficult. Indeed, in the case where the ink of the signature is difficult to erase, the fraudster will have to remove the watermark at the same time as the signature. This will force him to reprint a watermark on the card in order to reuse this card. On the other hand in the case where the ink of the signature easily disappears with a solvent without the watermark being altered, the fraudster can change the signature and reuse the card. In this case, no means has so far shown that the card has been the subject of an attempted fraud.

L'objet de l'invention est un procédé permettant de palier l'inconvénient ci-dessus et de déceler une tentative de fraude, tout en rendant l'imitation des cartes plus complexe.The object of the invention is a method for overcoming the above drawback and detecting an attempted fraud, while making the imitation of cards more complex.

Ce but est atteint par le fait que le procédé antifraude pour document de valeur constitué par un substrat en P.V.C., comportant un emplacement de signature sur ce substra, consiste à :

  • Déposer sur l'emplacement de signature une couche d'encre incluant un pigment et chargée d'un produit lui assurant une certaine porosité sur l'emplacement de signature;
  • Déposer sur certaines zones de la première couche d'encre un vernis transparent et poreux incluant en dissolution de la poudre de chélate de terre rare permettant d'obtenir aux ultra-violets une fluorescence de la couleur souhaitée;
  • Imprimer par sérigraphie, au moyen d'une deuxième encre vinylique pigmentée, un filigrane sur des zones de la première couche d'encre, et de la couche de vernis;
This object is achieved by the fact that the anti-fraud process for a document of value consisting of a PVC substrate, comprising a signature location on this substance, consists in:
  • Deposit on the signature site a layer of ink including a pigment and charged with a product ensuring it a certain porosity on the signature site;
  • Deposit on certain areas of the first layer of ink a transparent and porous varnish including in dissolution of the rare earth chelate powder making it possible to obtain ultraviolet fluorescence of the desired color;
  • Print by screen printing, using a second pigmented vinyl ink, a watermark on areas of the first layer of ink, and of the layer of varnish;

Apposer la signature du titulaire de la carte à l'aide d'un stylo feutre à encre indélébile à un produit tel que celui commercialisé sous la marque CORRECTORAffix the signature of the card holder using a felt-tip pen with indelible ink to a product such as that marketed under the brand CORRECTOR

D'autres caractéristiques et avantages de la présente invention apparaitront plus clairement à la lecture de la description ci-dessous faite en référence aux dessins annexés dans lesquels la figure 1 représente une vue partielle d'un docuement de valeur;Other characteristics and advantages of the present invention will appear more clearly on reading the description below made with reference to the appended drawings in which FIG. 1 represents a partial view of a valuable document;

La figure 2 représente une vue en coupe des différentes couches du document de valeur.Figure 2 shows a sectional view of the different layers of the valuable document.

La figure 1 représente une vue partielle d'un document de valeur obtenu par le procédé selon l'invention tel que par exemple, une carte de crédit, cette carte de crédit étant constituée par un substrat 1 en P.V.C. et comportant un emplacement rectangulaire permettant d'accueillir la signature du titulaire. Cet emplacement rectangulaire est constitué par une première couche d'encre 2, cette encre incluant un pigment lui conférant une couleur de préférence blanche et chargée d'un produit lui assurant une certaine porosité. De façon avantageuse l'encre pourra être constituée par une encre vinylique et chargée par un dioxyde de titane. Cette encre est commercialisée par les Etablissements DUBUIT sous la dénomination Blanc 1400. Sur certaines zones de cette première couche 2 on dépose un vernis mat poreux 3 dans lequel on a dissout une poudre de chélate de terre rare, ou de type esculine permettant de conférer à ce vernis une fluorescence de la couleur souhaitée. Cette fluorescence apparaît aux ultra-violets mais n'apparaît pas à la lumière du jour. Cette couche de vernis 3 peut être déposée par exemple sous la forme d'initiales en caractère d'une certaine largeur et récouvrant certaines zones de l'emplacement de signature. Ensuite on imprime un filigrane 4 de façon que celui-ci dans certaines zones soit uniquement sur la première couche d'encre et dans d'autres zones soit sur la couche de vernis comme on peut le voir à la figure 1. Ce filigrane 4 est imprimé par sérigraphie à l'aide d'une deuxième encre vinylique pigmentée. Le vernis mat transparent est constitué par le vernis commercialisé par les Etablissements DUBUIT sous la référence Vernis Mat 1400. Le produit en dissolution dans le vernis sera choisi en fonction de la fluorescence souhaitée lorsque l'on soumet la couche aux ultra-violets. Ainsi si l'on souhaite une couleur verte on utilisera un chélate de terbium, dans le cas où l'on souhaite obtenir une fluorescence jaune on utilisera un chélate de dysprosium, et dans le cas où on souhaite obtenir une fluorescence bleue on utilisera un produit tel que l'esculine. Ces différents produits ayant la propriété de ne pas perdre leur fluorescence dans le temps. Enfin on appose sur l'emplacement réservé à la signature, une signature 5 avec un stylo feutre comportant une encre indélébile à un produit tel que celui commercialisé sous la marque CORRECTOR. Ces stylos feutre peuvent être avantageusement constitués par les feutres commercialisés par la Société STAEDLER sous la référence 303 ou la Société MARKANA sous la référence 33. Par ailleurs on choisira l'encre de la couche 2 de façon a ce qu'elle ait une porosité supérieure à celle du vernis 3. De plus l'adhérence du vernis 3 devra être inférieure à l'adhérence de l'encre de la signature dans la couche d'encre support 2.FIG. 1 represents a partial view of a valuable document obtained by the method according to the invention such as for example, a credit card, this credit card being constituted by a PVC substrate 1 and comprising a rectangular location allowing '' welcome the signature of the holder. This rectangular location is constituted by a first layer of ink 2, this ink including a pigment giving it a preferably white color and loaded with a product ensuring it a certain porosity. Advantageously, the ink may consist of a vinyl ink and charged with a titanium dioxide. This ink is marketed by Etablissements DUBUIT under the name Blanc 1400. On certain areas of this first layer 2 a porous mat varnish 3 is deposited in which a powder of rare earth chelate, or esculin type has been dissolved, making this varnish fluoresce with the desired color. This fluorescence appears in ultraviolet light but does not appear in daylight. This layer of varnish 3 can be deposited for example in the form of initials in character of a certain width and covering certain areas of the signature location. Then we print a watermark 4 so that it in some areas is only on the first ink layer and in other areas or on the varnish layer as we can see in Figure 1. This watermark 4 is printed by screen printing using a second pigmented vinyl ink. The transparent matt varnish is constituted by the varnish marketed by the DUBUIT establishments under the reference Vernis Mat 1400. The product dissolved in the varnish will be chosen according to the desired fluorescence when the layer is subjected to ultraviolet. So if we want a green color we will use a terbium chelate, in the case where we want to obtain a yellow fluorescence we will use a dysprosium chelate, and in the case where we want to obtain a blue fluorescence we will use a product such as esculin. These different products have the property of not losing their fluorescence over time. Finally, a signature 5 is affixed on the space reserved for the signature, with a felt pen comprising an indelible ink to a product such as that marketed under the brand CORRECTOR. These felt pens can advantageously be made up of the felts sold by the company STAEDLER under the reference 303 or the company MARKANA under the reference 33. Furthermore, the ink of layer 2 will be chosen so that it has a higher porosity to that of varnish 3. In addition, the adhesion of varnish 3 must be less than the adhesion of the signature ink in the support ink layer 2.

Ainsi par ce procédé on a obtenu un document dans lequel toute tentative réussie de fraude sur la signature peut être décélée. En effet le feutre étant indélébile à des produits tel que celui commercialisé sous la marque CORRECTOR, on ne peut effacer la signature avec un produit de ce type. De même un produit tel que celui commercialisé sous la marque CORRECTOR est sans action sur le vernis support du produit fluorescent et ne peut attaquer une encre sérigraphique à base vinylique, puisqu'un tel produit n'est pas un solvant, mais agit par réaction chimique sur le pigment de l'encre. Par conséquent il ne peut y avoir fraude. Par contre dans le cas où on essaye d'utiliser des solvants peu agresssifs,tel que par exemple, de l'alcool, et dans le cas où en insistant suffisamement sur l'encre de la signature on arriverait à effacer partiellement celle-ci, l'encre de la signature déposée sur la couche fluorescente partira avec la couche fluorescente et avant les parties de la signature déposée sur la couche support 2. Ceci est dû au fait que d'une part la couche d'encre support 2 et la couche de vernis ont des porosités différentes et que l'adhérence de l'encre de feutre sur la couche support 2 est meilleure que l'adhérence du vernis sur la couche d'encre support. Par conséquent, on pourra décéler la fraude en constatant que les parties fluorescentes ne figurent plus aux emplacements souhaités. Ceci même si le fraudeur a réussi à remettre une signature sur la carte. Enfin la succession des diffférentes étapes du procédé et l'association des diffférents produits permettant de constituer ces étapes rend plus difficile la contrefaçon des cartes ou documents de valeur ainsi constitués.Thus, by this process, a document was obtained in which any successful attempt at signature fraud can be detected. Indeed, the felt being indelible to products such as that marketed under the brand CORRECTOR, one cannot erase the signature with a product of this type. Likewise, a product such as that marketed under the brand CORRECTOR has no action on the varnish supporting the fluorescent product and cannot attack a screen-based ink based on vinyl, since such a product is not a solvent, but acts by chemical reaction. on the ink pigment. Therefore there can be no fraud. On the other hand, in the case where we try to use solvents which are not very aggressive, such as, for example, alcohol, and in the case where by insisting sufficiently on the ink of the signature, we would manage to partially erase it, the signature ink deposited on the fluorescent layer will leave with the fluorescent layer and before the parts of the signature deposited on the support layer 2. This is due to the fact that on the one hand the support ink layer 2 and the layer of varnishes have different porosities and that the adhesion of the felt ink on the support layer 2 is better than the adhesion of the varnish on the support ink layer. Consequently, fraud can be detected by noting that the fluorescent parts no longer appear in the desired locations. This even if the fraudster succeeded in putting a signature on the card. Finally, the succession of the different stages of the process and the association of the different products making it possible to constitute these stages makes it more difficult to counterfeit the cards or documents of value thus constituted.

Toute modification à la portée de l'homme de métier fait également partie de l'esprit de l'invention.Any modification within the reach of the skilled person is also part of the spirit of the invention.

Ainsi on pourrait envisager d'imprimer le filigrane avec une encre non vinylique qui s'effacerait sous l'action d'un produit à base d'acide tel que celui commercialisé sous la marque CORRECTOR, par action sur les pigments de l'encre. Dans ce cas une tentative de fraude par un tel produit se décèle par la disparition du filigrane.Thus one could consider printing the watermark with a non-vinyl ink which would fade under the action of an acid-based product such as that marketed under the brand CORRECTOR, by action on the pigments of the ink. In this case an attempted fraud by such a product is detected by the disappearance of the watermark.

Claims (9)

1. Procédé antifraude pour document de valeur constitué par un substrat en P.V.C.(l) comportant un emplacement de signature sur ce substrat caractérisé en ce que le procédé consiste à : Déposer sur l'emplacement de signature une couche d'encre 2, incluant un pigment et chargé d'un produit lui assurant une certaine porosité, sur l'emplacement de signature;
Déposer sur certaines zones de la première couche support 2 un vernis transparent et poreux 3 incluant en dissolution de la poudre permettant d'obtenir aux ultra- violets une fluorescence de la couleur souhaitée; Imprimer par sérigraphie au moyen d'une deuxième encre, vinylique pigmentée 5 , un filigrane sur des zones de la première couche d'encre support 2 et de la couche de vernis 3; Apposer la signature 5 du titulaire de la carte à l'aide d'un stylo feutre à encre indélébile à des produits tel que celui commercialisé sous la marque CORRECTOR.1. Anti-fraud method for a document of value consisting of a PVC substrate (l) comprising a signature location on this substrate, characterized in that the method consists in: depositing on the signature location a layer of ink 2, including a pigment and loaded with a product ensuring it a certain porosity, on the signature location;
Deposit on certain areas of the first support layer 2 a transparent and porous varnish 3 including in dissolution of the powder making it possible to obtain ultraviolet fluorescence of the desired color; Print by screen printing using a second pigmented vinyl ink 5, a watermark on areas of the first support ink layer 2 and the varnish layer 3; Affix the signature 5 of the card holder using a felt-tip pen with indelible ink to products such as the one marketed under the brand CORRECTOR. 2. Procédé selon la revendication 1 caractérisé en ce que l'encre de la première couche 2 est vinylique et chargée de dioxyde de titane.2. Method according to claim 1 characterized in that the ink of the first layer 2 is vinylic and charged with titanium dioxide. 3. Procédé selon la revendication 1 ou 2 caractérisé en ce que le vernis transparent 3 est vinylique et mat.3. Method according to claim 1 or 2 characterized in that the transparent varnish 3 is vinyl and mat. 4. Procédé selon l'une des revendications 1 à 3 caractérisé en ce que l'on utilise un chélate de terbium pour obtenir une fluorescence verte.4. Method according to one of claims 1 to 3 characterized in that one uses a terbium chelate to obtain a green fluorescence. 5. Procédé selon l'une des revendications 1 à 3 caractérisé en ce que l'on utilise un chélate de dysprosium pour obtenir une fluorescence jaune.5. Method according to one of claims 1 to 3 characterized in that one uses a dysprosium chelate to obtain a yellow fluorescence. 6. Procédé selon l'une des revendications 1 à 3 caractérisé en ce que l'on utilise un produit de type esculine pour obtenir une fluorescence bleue.6. Method according to one of claims 1 to 3 characterized in that a product of esculin type is used to obtain a blue fluorescence. 7. Procédé selon une des revendications précédentes caractérisé en ce que les porosités de la première couche d'encre 2 et de la couche de vernis 3 sont différentes et que la pénétration de l'encre du feutre est meilleure sur la première encre 2 que sur le vernis 3.7. Method according to one of the preceding claims, characterized in that the porosities of the first ink layer 2 and of the varnish layer 3 are different and that the penetration of the felt ink is better on the first ink 2 than on varnish 3. 8. Procédé selon l'une des revendications précédentes caractérisé en ce que l'adhérence de l'encre de feutre sur la première couche d'encre 2 est meilleure que l'adhérence du vernis 3 sur la première couche d'encre 2.8. Method according to one of the preceding claims, characterized in that the adhesion of the felt ink on the first layer of ink 2 is better than the adhesion of the varnish 3 on the first layer of ink 2. 9. Carte caractérisée en ce qu'elle est obtenue selon le procédé de l'une des revendication précédente.9. Card characterized in that it is obtained according to the method of one of the preceding claim.
EP85401685A 1984-09-07 1985-08-27 Fraud-preventing method for security papers Withdrawn EP0176403A1 (en)

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FR8413760 1984-09-07
FR8413760A FR2570101B1 (en) 1984-09-07 1984-09-07 ANTI-FRAUD PROCESS FOR VALUE DOCUMENTS

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WO1990010546A1 (en) * 1989-03-07 1990-09-20 The De La Rue Company Plc Identification article
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EP0473998A2 (en) * 1990-08-22 1992-03-11 Eric Bauer Method of manufacturing a data card incorporating markings and a data card incorporating markings obtained by this method
EP0473998A3 (en) * 1990-08-22 1992-04-15 Eric Bauer Method of fabricating an infermation card incorporating works and information card incorporating marks obtained by this method
EP0476636A1 (en) * 1990-09-19 1992-03-25 Toppan Printing Co., Ltd. Signature panel and process for producing the same
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WO1994011203A1 (en) * 1992-11-18 1994-05-26 Oesterreichische Nationalbank Document with doped optical safety mark, stratified composite paper for producing the same and device for checking the authenticity of the document
US6165592A (en) * 1992-11-18 2000-12-26 Oesterreichische Nationalbank Document with doped optical security attribute, layer composite for making same and test device for testing the document for authenticity
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Also Published As

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US4627642A (en) 1986-12-09
JPS61179798A (en) 1986-08-12
FR2570101A1 (en) 1986-03-14
FR2570101B1 (en) 1987-09-25

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