EP1384594B1 - Protection against data tampering - Google Patents

Protection against data tampering Download PDF

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Publication number
EP1384594B1
EP1384594B1 EP02102062A EP02102062A EP1384594B1 EP 1384594 B1 EP1384594 B1 EP 1384594B1 EP 02102062 A EP02102062 A EP 02102062A EP 02102062 A EP02102062 A EP 02102062A EP 1384594 B1 EP1384594 B1 EP 1384594B1
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EP
European Patent Office
Prior art keywords
data
ink
printed
feature
substrate
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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
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EP02102062A
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German (de)
French (fr)
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EP1384594A1 (en
Inventor
François Veldeman
Marc Salade
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BANQUE NATIONALE DE BELGIQUE SA
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BANQUE NATIONALE DE BELGIQUE SA
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.)
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Application filed by BANQUE NATIONALE DE BELGIQUE SA filed Critical BANQUE NATIONALE DE BELGIQUE SA
Priority to ES02102062T priority Critical patent/ES2286200T3/en
Priority to DE60219455T priority patent/DE60219455T2/en
Priority to AT02102062T priority patent/ATE359183T1/en
Priority to EP02102062A priority patent/EP1384594B1/en
Publication of EP1384594A1 publication Critical patent/EP1384594A1/en
Application granted granted Critical
Publication of EP1384594B1 publication Critical patent/EP1384594B1/en
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    • 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
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/10—Intaglio printing ; Gravure 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
    • B41M3/005—Colour cards; Painting supports; Latent or hidden images, e.g. for games; Time delayed images

Definitions

  • the invention relates to devices and methods for preventing the falsification of statements affixed either by printing or manually to a printed document.
  • the type of falsification targeted by the device of the invention is specifically the alteration of initial data, which are replaced by others, which serve the purposes of the fraudster.
  • the documents covered by the present protection system are, in particular, authentic or authenticated documents, checks, traveler's checks, certificates, identity documents, lottery tickets, titles, etc.
  • the substrate on which these documents are printed will therefore go from normal paper to plastic card, through special paper, watermark, etc.
  • fraudsters start from a worthless document (or of lesser value) and alter by scrubbing or scraping some initial data that interferes with them (nominal value of a check, lottery number, name of beneficiary, etc.) to replace them with others.
  • EP 0 184 529 describes the use of an ink absorbing substrate used by the variable data.
  • Another method consists in giving a relief to the surface of the substrate in particular by the process of soft-cutting (intaglio), which forces the fraudsters to further alter the surface of the substrate.
  • An object of the invention is that an attempt at fraud is easily detectable, even to a little exercised.
  • Another object of the invention is the development of a relatively inexpensive method, which can be easily extended to many types of documents.
  • the object of the invention is a device for protecting against falsification of data carried on a printed document in which, at least in a zone intended to affix the variable data, the document comprises at least one raised pattern, obtained by one of the following methods: screen printing, flexography, rotogravure. This relief is due exclusively to the thickness of the ink layer used to form this pattern.
  • the embossed pattern is affixed either above or below the data to be protected.
  • the ink used preferably contains optical effect pigments; the optical effect is advantageously an iridescence or an opalescence.
  • the operation b can be performed after the operation g, the sequence being as follows: a, c, d, e, f, g, b
  • the printing process is preferably selected from the following methods: screen printing, flexography, gravure printing.
  • the polymerization is activated by an energy supply by electromagnetic radiation, selected from the following: infrared, UV, microwave.
  • Fig. 1 shows the effect of scratching in the case of a conventional printed document on flat substrate 8.
  • a "variable datum” 4 also alters an underlying printed pattern 6, leaving a "white zone” that the fraudster is obliged to maintain. make up to conceal the falsification.
  • Fig. 2 shows the effect of scraping in the case of an embossed substrate 9: the fraudster is brought, during scraping, to penetrate the surface of the embossed substrate 9.
  • Fig. 3 shows the result of an attempt to falsify a document protected by the device of the invention.
  • a pattern 10 is superimposed on the data at 4. This pattern 10 appears in relief because it is formed of an ink deposited in a thick layer 12.
  • the data to be protected 4 is closely related to the reason 10 and it is impossible to proceed with selective scraping. Any attempt to falsify automatically causes a three-dimensional destruction of the pattern 10. It is impossible for the fraudster, even if he had an ink comprising pigments reproducing a color comparable to that of the ink used (which is not already not so easy), to restore the effect given by the relief of the ink layer 12 of the device of the invention.
  • an ink containing, in addition to the pigments and a certain quantity of solvents, polymerizable materials ("varnishes", monomers), which is deposited on the appropriate substrate in using a printing process for the transfer of a thick ink layer and the use of large pigments.
  • These methods include, typically, screen printing, flexography and gravure printing.
  • the current practice in printing is that, in order to obtain the maximum optical effect of the pigments dispersed in the ink, the ink layer is as thin as possible, and therefore practically two-dimensional. A thin layer also has the advantage of making scraping more difficult.
  • a dark and opaque pattern is avoided: it is preferable to use a delicate pattern such as a guilloche pattern (typically width of the order of 0.1 to 0.2 mm, equally spaced), more difficult to reproduce, and made with transparent or translucent inks, for example loaded with pigments producing a particular optical effect when they are are viewed from a certain angle, such as iridescence or opalescence.
  • a delicate pattern such as a guilloche pattern (typically width of the order of 0.1 to 0.2 mm, equally spaced), more difficult to reproduce, and made with transparent or translucent inks, for example loaded with pigments producing a particular optical effect when they are are viewed from a certain angle, such as iridescence or opalescence.
  • the apposition of the ink layer has been performed over the data item to be protected 4, the own apposition of which is included in the printing process of the substrate 8.
  • the data to be protected 4 may itself be a piece of data authenticating the document, such as a holographic image, whose mere presence (even if impaired) may be sufficient for an observer who is not very attentive to concluding that a document is authentic.
  • the most typical case is that of a data item written by hand (signature, etc.).
  • the reliefs formed by the thick layer 12 are crushed locally at the time of handwriting.
  • the deletion, as careful as it is, of the data to be protected 4 can not hide the presence of "damaged" reliefs 16, which makes it possible to easily locate a falsified document.

Abstract

Means for protecting a printed document from data falsification comprises a relief pattern in a zone bearing the data, the relief being exclusively due to the thickness of the ink used to form the pattern. An Independent claim is also included for protecting a printed document from data falsification by printing a substrate with the data, printing a design with a thick layer of ink containing an activatable polymerizable material, and activating polymerization by supplying energy.

Description

L'invention concerne les dispositifs et les procédés empêchant la falsification de mentions apposées soit par impression, soit manuellement, sur un document imprimé.The invention relates to devices and methods for preventing the falsification of statements affixed either by printing or manually to a printed document.

Le type de falsification visé par le dispositif de l'invention est spécifiquement l'altération de données initiales, qui sont remplacées par d'autres, qui servent les desseins du fraudeur.The type of falsification targeted by the device of the invention is specifically the alteration of initial data, which are replaced by others, which serve the purposes of the fraudster.

Ces données peuvent être soit des données « fixes », qui se retrouvent à l'identique sur tous les documents d'une série (valeur faciale d'un bon), soit des données propres à un document déterminé ; dans ce cas, elles sont désignées sous le terme générique de "données variables" et peuvent être, typiquement, une signature, un numéro de série, un code, etc.These data can be either "fixed" data, which are identical on all the documents of a series (facial value of a voucher), or data specific to a specific document; in this case they are referred to generically as "variable data" and can typically be a signature, serial number, code, etc.

Les documents visés par le présent dispositif de protection sont, notamment, les documents authentiques ou authentifiés, les chèques, les chèques de voyage, les certificats, les pièces d'identité, les billets de loteries, les titres, etc. Le substrat sur lequel ces documents sont imprimés ira donc du papier normal à la carte en plastique, en passant par les papiers spéciaux, à filigrane, etc.The documents covered by the present protection system are, in particular, authentic or authenticated documents, checks, traveler's checks, certificates, identity documents, lottery tickets, titles, etc. The substrate on which these documents are printed will therefore go from normal paper to plastic card, through special paper, watermark, etc.

Suivant une technique de falsification classique, les fraudeurs partent d'un document sans valeur (ou de moindre valeur relative) et altèrent par gommage ou grattage certaines données initiales qui les gênent (valeur nominale d'un chèque, numéro de loterie, nom d'un bénéficiaire, etc.) pour les remplacer par d'autres.Using a traditional forgery technique, fraudsters start from a worthless document (or of lesser value) and alter by scrubbing or scraping some initial data that interferes with them (nominal value of a check, lottery number, name of beneficiary, etc.) to replace them with others.

Pour compliquer la tâche de ces fraudeurs, différentes méthodes sont appliquées, telle que l'usage de papiers à surface altérable ou l'impression d'un motif sous jacent : l'altération des données initiales altère également le motif sous jacent, qui doit donc être redessiné ou complété.To complicate the task of these fraudsters, different methods are applied, such as the use of alterable surface or the printing of an underlying pattern: the alteration of the initial data also alters the underlying pattern, which must be redrawn or completed.

EP 0 184 529 décrit l'emploi d'un substrat absorbant l'encre utilisée par les données variables.EP 0 184 529 describes the use of an ink absorbing substrate used by the variable data.

Une autre méthode consiste à conférer un relief à la surface du substrat notamment par le procédé de la taille douce (intaglio), ce qui oblige les fraudeurs à altérer davantage la surface du substrat.Another method consists in giving a relief to the surface of the substrate in particular by the process of soft-cutting (intaglio), which forces the fraudsters to further alter the surface of the substrate.

Il va de soi que ces différents procédés peuvent, de surcroît, être combinés entre eux, rendant la tâche des fraudeurs d'autant plus ardue.It goes without saying that these different processes can, in addition, be combined with each other, making the task of fraudsters all the more difficult.

L efficacité de ces différents procédés est cependant battue en brèche par les méthodes de plus en plus tortueuses appliquées par les fraudeurs, d où la nécessité d'un appareillage parfois fort élaboré pour détecter les fraudes.The effectiveness of these different processes is, however, defeated by the increasingly tortuous methods applied by fraudsters, hence the need for an apparatus sometimes very sophisticated to detect fraud.

Un but de l'invention est qu'une tentative de fraude soit aisément décelable, même à un il peu exercé.An object of the invention is that an attempt at fraud is easily detectable, even to a little exercised.

Un autre but de l'invention est la mise au point d'un procédé relativement peu onéreux, qui puisse être étendu facilement à de nombreux types de documents.Another object of the invention is the development of a relatively inexpensive method, which can be easily extended to many types of documents.

L'objet de l'invention est un dispositif de protection contre la falsification de données portées sur un document imprimé dans lequel, au moins dans une zone destinée à l'apposition des données variables, le document comprend au moins un motif en relief, obtenu par un des procédés suivants : la sérigraphie, la flexographie, l'héliogravure. Ce relief étant dû exclusivement à l'épaisseur de la couche d'encre utilisée pour former ce motif. Le motif en relief est apposé soit au-dessus soit en-dessous des données à protéger.The object of the invention is a device for protecting against falsification of data carried on a printed document in which, at least in a zone intended to affix the variable data, the document comprises at least one raised pattern, obtained by one of the following methods: screen printing, flexography, rotogravure. This relief is due exclusively to the thickness of the ink layer used to form this pattern. The embossed pattern is affixed either above or below the data to be protected.

L'encre utilisée contient de préférence des pigments à effet optique ; l'effet optique est avantageusement une iridescence ou une opalescence.The ink used preferably contains optical effect pigments; the optical effect is advantageously an iridescence or an opalescence.

Un autre objet de l invention est un procédé pour la protection contre la falsification de données portées sur un document imprimé qui comprend les opérations suivantes :

  1. a) sélectionner un substrat
  2. b) imprimer sur ce substrat une donnée à protéger
  3. c) sélectionner une encre contenant un matériau polymérisable et un accélérateur de polymérisation
  4. d) sélectionner un procédé d'impression parmi les procédés suivants : la sérigraphie, la flexographie, l'héliogravure
  5. e) imprimer un motif avec cette encre à l'aide de ce procédé
  6. f) activer l'accélérateur de polymérisation par un apport énergétique ad hoc
  7. g) faire polymériser l'encre en couche épaisse
Another object of the invention is a method for protecting against falsification of data on a printed document which comprises the following operations:
  1. a) select a substrate
  2. b) print on this substrate a piece of data to protect
  3. c) selecting an ink containing a polymerizable material and a polymerization accelerator
  4. d) select a printing process among the following methods: screen printing, flexography, rotogravure
  5. e) print a pattern with this ink using this process
  6. f) activate the polymerization accelerator with an ad hoc energy supply
  7. g) polymerize the ink in a thick layer

Dans ce procédé, l'opération b peut être pratiquée après l'opération g, la séquence se déroulant comme suit : a,c,d,e,f,g,bIn this method, the operation b can be performed after the operation g, the sequence being as follows: a, c, d, e, f, g, b

Le procédé d'impression est de préférence sélectionné parmi les procédés suivants : la sérigraphie, la flexographie, l'héliogravure.The printing process is preferably selected from the following methods: screen printing, flexography, gravure printing.

De façon avantageuse, la polymérisation est activée par un apport énergétique par rayonnement électromagnétique, sélectionné parmi les suivants : infrarouges, UV, micro ondes.Advantageously, the polymerization is activated by an energy supply by electromagnetic radiation, selected from the following: infrared, UV, microwave.

D autres particularités et avantages de l invention ressortiront de la description ci après de modes de réalisation particuliers de l'invention, référence étant faite aux dessins annexés dans lesquels :

  • La Fig. 1 est une vue schématique en perspective avec dimensions exagérées montrant la falsification par grattage d'un document à substrat plat.
  • La Fig. 2 est une vue schématique en perspective montrant la falsification par grattage d'un document à substrat embossé.
  • La Fig. 3 est une vue schématique en perspective du résultat d'une tentative de falsification du dispositif de l'invention.
  • La Fig.4 est une vue schématique similaire à la Fig.3 avec apposition ultérieure de la donnée à protéger.
Other features and advantages of the invention will emerge from the following description of modes of particular embodiment of the invention, reference being made to the appended drawings in which:
  • Fig. 1 is a schematic perspective view with exaggerated dimensions showing the forgery forgery of a flat substrate document.
  • Fig. 2 is a schematic perspective view showing the forgery forgery of an embossed substrate document.
  • Fig. 3 is a schematic perspective view of the result of an attempt to falsify the device of the invention.
  • Fig.4 is a schematic view similar to Fig.3 with subsequent affixing the data to be protected.

La Fig. 1 montre l'effet du grattage dans le cas d'un document imprimé classique sur substrat plat 8.Fig. 1 shows the effect of scratching in the case of a conventional printed document on flat substrate 8.

Le grattage par un objet pointu quelconque 2 d'une donnée à protéger, soit une "donnée variable" 4 (ici une lettre A) altère également un motif imprimé sous jacent 6, laissant subsister une "zone blanche" que le fraudeur est obligé de maquiller pour dissimuler la falsification.The scraping by any sharp object 2 of a datum to be protected, a "variable datum" 4 (here a letter A) also alters an underlying printed pattern 6, leaving a "white zone" that the fraudster is obliged to maintain. make up to conceal the falsification.

La Fig. 2 montre l'effet du grattage dans le cas d'un substrat embossé 9 : le fraudeur est amené, au cours du grattage, à entamer la surface du substrat embossé 9.Fig. 2 shows the effect of scraping in the case of an embossed substrate 9: the fraudster is brought, during scraping, to penetrate the surface of the embossed substrate 9.

Une telle altération est, normalement, facilement repérée par transparence. Certains malfaiteurs particulièrement habiles parviennent cependant à minimiser cette caractéristique.Such alteration is normally easily identified by transparency. However, some particularly skilled criminals manage to minimize this characteristic.

La Fig. 3 montre le résultat d'une tentative de falsification d'un document protégé par le dispositif de l'invention.Fig. 3 shows the result of an attempt to falsify a document protected by the device of the invention.

Dans ce dispositif, où la forme du substrat 8 a peu d'importance, un motif 10 est superposé à la donnée à protéger 4. Ce motif 10 apparaît en relief car il est formé d'une encre déposée en couche épaisse 12.In this device, where the shape of the substrate 8 is of little importance, a pattern 10 is superimposed on the data at 4. This pattern 10 appears in relief because it is formed of an ink deposited in a thick layer 12.

En conséquence, la donnée à protéger 4 est intimement liée au motif 10 et il est impossible de procéder à un grattage sélectif. Toute tentative de falsification entraîne automatiquement une destruction tridimensionnelle 14 du motif 10. Il est impossible pour le fraudeur, quand bien même il disposerait d'une encre comprenant des pigments reproduisant une couleur comparable à celle de l'encre utilisée (ce qui n'est déjà pas si facile), de restituer l'effet donné par le relief de la couche d'encre 12 du dispositif de l'invention.Accordingly, the data to be protected 4 is closely related to the reason 10 and it is impossible to proceed with selective scraping. Any attempt to falsify automatically causes a three-dimensional destruction of the pattern 10. It is impossible for the fraudster, even if he had an ink comprising pigments reproducing a color comparable to that of the ink used (which is not already not so easy), to restore the effect given by the relief of the ink layer 12 of the device of the invention.

Pour obtenir le relief particulier 12 du dispositif de l'invention, on utilise une encre contenant, outre les pigments et une certaine quantité de solvants, des matériaux polymérisables ("vernis", monomères), que l'on dépose sur le substrat approprié en utilisant un procédé d'impression permettant le transfert d'une couche d'encre épaisse et l'utilisation de pigments de grandes dimensions.In order to obtain the particular relief 12 of the device of the invention, an ink containing, in addition to the pigments and a certain quantity of solvents, polymerizable materials ("varnishes", monomers), which is deposited on the appropriate substrate in using a printing process for the transfer of a thick ink layer and the use of large pigments.

Parmi ces procédés, on peut citer, typiquement, la sérigraphie, la flexographie et l'héliogravure.These methods include, typically, screen printing, flexography and gravure printing.

La pratique courante en imprimerie veut que, pour tirer un maximum d'effet optique des pigments dispersés dans l'encre, la couche d'encre soit aussi mince que possible, et donc pratiquement bidimensionnelle. Une couche mince offre également l'avantage de rendre le grattage plus difficile.The current practice in printing is that, in order to obtain the maximum optical effect of the pigments dispersed in the ink, the ink layer is as thin as possible, and therefore practically two-dimensional. A thin layer also has the advantage of making scraping more difficult.

Ce résultat est généralement obtenu par un séchage classique.This result is generally obtained by conventional drying.

Tout à l'opposé de cette pratique, dans le procédé de l'invention, on procède à un séchage bref avec apport énergétique intense, de façon à obtenir une polymérisation presque instantanée de la couche d'encre, pratiquement sans réduction de volume. En conséquence, on obtient une couche 12 à extension tridimensionnelle (de l'ordre d'une dizaine de µm). Cet apport énergétique peut être réalisé par élévation de la température, par rayonnement électromagnétique ou par faisceau d'électrons.Quite the opposite of this practice, in the process of the invention, a brief drying is carried out with intense energy supply, so as to obtain a polymerization almost instantaneous of the ink layer, virtually without volume reduction. As a result, a layer 12 with three-dimensional extension (of the order of ten μm) is obtained. This energy supply can be achieved by raising the temperature, electromagnetic radiation or electron beam.

Comme on l'a vu plus haut, de façon quasi paradoxale, le grattage des données 4 n'en est pas facilité, au contraire : les altérations 14 n'en deviennent que plus apparentes.As we have seen above, in an almost paradoxical way, the scraping of the data 4 is not facilitated, on the contrary: the alterations 14 become only more apparent.

Par ailleurs, pour ne pas altérer la lisibilité de la donnée 4 à protéger, on évite l'utilisation d'un motif sombre et opaque : il est préférable d'avoir recours à un motif délicat tel qu'un guillochage (typiquement, des traits d'une largeur de l'ordre de 0,1 à 0,2 mm, espacés de même) , plus difficile à reproduire, et réalisé avec des encres transparentes ou translucides, chargées par exemple de pigments produisant un effet optique particulier lorsqu'elles sont vues sous un angle déterminé, comme une iridescence ou une opalescence.Furthermore, to avoid altering the readability of the data 4 to be protected, the use of a dark and opaque pattern is avoided: it is preferable to use a delicate pattern such as a guilloche pattern (typically width of the order of 0.1 to 0.2 mm, equally spaced), more difficult to reproduce, and made with transparent or translucent inks, for example loaded with pigments producing a particular optical effect when they are are viewed from a certain angle, such as iridescence or opalescence.

Dans l'exemple de la Fig.3, l'apposition de la couche d'encre a été réalisée par dessus la donnée à protéger 4, dont l'apposition propre est inclue dans le procédé d'impression du substrat 8.In the example of FIG. 3, the apposition of the ink layer has been performed over the data item to be protected 4, the own apposition of which is included in the printing process of the substrate 8.

On notera que la donnée à protéger 4 peut être elle même une donnée authentifiant le document, comme une image holographique, dont la seule présence (même altérée) peut suffire à un observateur peu attentif à conclure à l'authenticité d'un document.It will be noted that the data to be protected 4 may itself be a piece of data authenticating the document, such as a holographic image, whose mere presence (even if impaired) may be sufficient for an observer who is not very attentive to concluding that a document is authentic.

On peut également avoir recours à la même technique pour protéger une donnée variable 4 apposée a posteriori sur la couche d'encre en relief 12, comme montré à la Fig. 4. Le cas le plus typique est celui d'une donnée écrite à la main (signature, etc.).The same technique can also be used to protect variable data 4 affixed a posteriori on the relief ink layer 12, as shown in FIG. 4. The most typical case is that of a data item written by hand (signature, etc.).

Dans ce cas, les reliefs constitués par la couche épaisse 12 sont écrasés localement au moment de l'apposition manuscrite. L'effacement, aussi soigneux soit il, de la donnée à protéger 4 ne peut masquer la présence de reliefs « endommagés » 16, ce qui permet de repérer sans difficultés un document falsifié.In this case, the reliefs formed by the thick layer 12 are crushed locally at the time of handwriting. The deletion, as careful as it is, of the data to be protected 4 can not hide the presence of "damaged" reliefs 16, which makes it possible to easily locate a falsified document.

Claims (8)

  1. Device for protecting against the falsification of data on a printed document, comprising a document, a printed feature and a feature in relief, characterized in that, at least in an area intended for affixing data to be protected, the document comprises at least one feature in relief obtained by one of the following processes: screen printing, flexography, gravure printing, this relief being due exclusively to the thickness of the ink layer used to form this feature, the feature in relief being affixed either above or below the data to be protected.
  2. Protection device according to Claim 1, characterized in that the ink used contains pigments having an optical effect.
  3. Protection device according to Claim 2, characterized in that the optical effect is an iridescent effect.
  4. Protection device according to Claim 2, characterized in that the optical effect is an opalescent effect.
  5. Method for protecting against the falsification of data on a printed document, characterized in that it comprises the following operations:
    a) a substrate is selected;
    b) data to be protected is printed on this substrate;
    c) an ink containing an activatable curable material is selected;
    d) a printing process is selected from the following processes: screen printing, flexography, gravure printing;
    e) a feature is printed with this ink using the above process;
    f) the curing is activated by an influx of energy for the purpose; and
    g) the ink is cured as a thick layer.
  6. Method for protecting against the falsification of data on a printed document, characterized in that it comprises the following operations:
    a) a substrate is selected;
    b) an ink containing an activatable curable material is selected;
    c) a printing process is selected from the following processes: screen printing, flexography, gravure printing;
    d) a feature is printed with this ink using the above process;
    e) the curing is activated by an influx of energy for the purpose;
    f) the ink is cured as a thick layer; and
    g) data to be protected is printed on this substrate.
  7. Method according to either of Claims 5 and 6, characterized in that the curable material contains a cure accelerator.
  8. Method according to any one of Claims 5 to 7, characterized in that the curing is activated by an influx of energy selected from the following means: infra red, UV, microwaves.
EP02102062A 2002-07-26 2002-07-26 Protection against data tampering Expired - Lifetime EP1384594B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES02102062T ES2286200T3 (en) 2002-07-26 2002-07-26 PROTECTION AGAINST DATA FALSIFICATION.
DE60219455T DE60219455T2 (en) 2002-07-26 2002-07-26 Protection against data corruption
AT02102062T ATE359183T1 (en) 2002-07-26 2002-07-26 PROTECTION AGAINST DATA CORRUPTION
EP02102062A EP1384594B1 (en) 2002-07-26 2002-07-26 Protection against data tampering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02102062A EP1384594B1 (en) 2002-07-26 2002-07-26 Protection against data tampering

Publications (2)

Publication Number Publication Date
EP1384594A1 EP1384594A1 (en) 2004-01-28
EP1384594B1 true EP1384594B1 (en) 2007-04-11

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Application Number Title Priority Date Filing Date
EP02102062A Expired - Lifetime EP1384594B1 (en) 2002-07-26 2002-07-26 Protection against data tampering

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EP (1) EP1384594B1 (en)
AT (1) ATE359183T1 (en)
DE (1) DE60219455T2 (en)
ES (1) ES2286200T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602005010866D1 (en) * 2004-06-11 2008-12-18 Ahlstroem Oy HISTORIZED SAFETY MATERIAL AND MANUFACTURING METHOD THEREFOR
CN114103504B (en) * 2021-11-26 2024-05-07 上海美美尚隽印刷有限公司 Printing process of anti-counterfeiting traceable invisible codes and color box for printing invisible codes

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4033059A (en) * 1972-07-06 1977-07-05 American Bank Note Company Documents of value including intaglio printed transitory images
CH662989A5 (en) * 1983-11-16 1987-11-13 De La Rue Giori Sa VALUE PAPER.
FR2574099B1 (en) 1984-12-05 1987-02-27 Aussedat Rey INFALSIFIABLE PRINT-WRITE SUPPORT
WO1993022146A1 (en) * 1992-04-24 1993-11-11 Francois-Charles Oberthur Group Intaglio printing method and secure document having a variable optical image
GB9806077D0 (en) * 1998-03-20 1998-05-20 Rue De Int Ltd Latent image structure
GB2360250A (en) * 2000-03-17 2001-09-19 Arc Screen Print Ltd Printing whereby different images are discernable at different angles of view

Also Published As

Publication number Publication date
ATE359183T1 (en) 2007-05-15
EP1384594A1 (en) 2004-01-28
DE60219455T2 (en) 2007-12-13
ES2286200T3 (en) 2007-12-01
DE60219455D1 (en) 2007-05-24

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