EP1892329A1 - Sheet of fibrous material comprising tactile safety elements - Google Patents

Sheet of fibrous material comprising tactile safety elements Download PDF

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Publication number
EP1892329A1
EP1892329A1 EP07290998A EP07290998A EP1892329A1 EP 1892329 A1 EP1892329 A1 EP 1892329A1 EP 07290998 A EP07290998 A EP 07290998A EP 07290998 A EP07290998 A EP 07290998A EP 1892329 A1 EP1892329 A1 EP 1892329A1
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EP
European Patent Office
Prior art keywords
sheet
security
fiber segments
segments
adhesive layer
Prior art date
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Granted
Application number
EP07290998A
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German (de)
French (fr)
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EP1892329B1 (en
Inventor
Thierry Dumery
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Banque de France
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Banque de France
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Publication date
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Priority to PL07290998T priority Critical patent/PL1892329T3/en
Publication of EP1892329A1 publication Critical patent/EP1892329A1/en
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Publication of EP1892329B1 publication Critical patent/EP1892329B1/en
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    • 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
    • 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
    • D21H21/50—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 form

Abstract

The fibrous sheet (2) e.g. banknote comprises interwoven paper fiber segments (6) having an end embedded in an adhesive layer (5) to form an angle with the sheet and a projected free end, and a safety element (7) having the adhesive layer. The fiber segments are tactilely perceptible compared to a surface of the skin. The adhesive layer has a film segment fixed to the sheet. The film segment comprises a portion extending in a window (3) of the sheet and carrying the safety elements. The free end of the fiber segments lies on a side of the sheet.

Description

La présente invention concerne une feuille en matière fibreuse, notamment un billet de banque, comportant des éléments de sécurité tactile.The present invention relates to a sheet of fibrous material, in particular a bank note, comprising tactile security elements.

ARRIERE PLAN DE L'INVENTIONBACKGROUND OF THE INVENTION

On sait qu'en raison du développement des moyens de reproduction il devient de plus en plus difficile de réaliser des éléments de sécurité visuels ne pouvant pas être reproduits par les fraudeurs. En outre l'examen d'un élément de sécurité visuel complexe ne peut pas être effectué par un commerçant devant un client, tant en raison de la rapidité avec laquelle le contrôle doit être exécuté qu'en raison de la contrariété qu'un client honnête risque de ressentir lorsqu'il assiste à un examen détaillé du billet qu'il vient de remettre au commerçant.We know that because of the development of the means of reproduction it becomes increasingly difficult to achieve visual security elements that can not be reproduced by fraudsters. In addition, the examination of a complex visual security element can not be carried out by a merchant in front of a customer, both because of the speed with which the check must be executed and because of the annoyance that an honest customer may feel when he attends a detailed examination of the ticket he has just given to the merchant.

Afin de permettre un contrôle rapide et discret d'une feuille en matière fibreuse comportant un élément de sécurité, il a donc été envisagé de réaliser des éléments de sécurité tactile.In order to allow a fast and discreet control of a sheet of fibrous material comprising a security element, it has therefore been envisaged to produce tactile security elements.

A cet effet le document US-A-2006/0088160 propose de réaliser des éléments de sécurité tactile en effectuant des impressions en relief par des variations de la quantité de toner déposée sur la feuille pour réaliser un signe de sécurité. Un tel signe de sécurité peut toutefois être reproduit au moyen d'un matériel conventionnel en effectuant plusieurs passages du même document dans une imprimante. L'élément de sécurité proposé par ce document n'est donc pas satisfaisant.For this purpose the document US-2006/0088160 proposes to achieve tactile security elements by performing relief printing by variations in the amount of toner deposited on the sheet to achieve a security sign. Such a security sign may, however, be reproduced by means of conventional equipment by making several passes of the same document in a printer. The security element proposed by this document is therefore unsatisfactory.

Il est également proposé dans le document EP-A-1 658 992 de traiter la surface d'un billet de banque au moyen d'un rayon laser adapté à provoquer un redressement des fibres de papier donnant un relief particulier à la zone traitée. Toutefois le faible relief obtenu par ce procédé est difficilement perceptible et compte tenu de la faible dimension des fibres de papier (qui ont généralement ont diamètre de l'ordre de 10 à 35 µm) le relief ainsi obtenu risque d'être rapidement abrasé lors des manipulations du billet.It is also proposed in the document EP-A-1,658,992 to treat the surface of a bank note by means of a laser beam adapted to cause a recovery of the paper fibers giving a particular relief to the area treated. However, the low relief obtained by this method is difficult to perceive and given the small size of the paper fibers (which generally have a diameter of the order of 10 to 35 microns) the relief thus obtained may be quickly abraded during manipulations of the ticket.

Par ailleurs, afin de fixer un ruban de sécurité de grande largeur dans une feuille de papier, le document WO 2005/026440 propose de réaliser le ruban sous forme d'un substrat sur lequel est collée une couche de fibres formant une toison. Du point de vue tactile, le ruban de sécurité, même lorsqu'il apparaît dans une fenêtre du papier, a donc un toucher semblable à la surface du papier.In addition, in order to secure a wide-width security tape in a sheet of paper, the document WO 2005/026440 proposes to make the ribbon in the form of a substrate on which is bonded a layer of fibers forming a fleece. From a tactile point of view, the security tape, even when it appears in a paper window, therefore has a similar feel to the surface of the paper.

OBJET DE L'INVENTIONOBJECT OF THE INVENTION

Un but de l'invention est de proposer une feuille en matière fibreuse comportant un élément de sécurité qui soit tout à la fois facile à détecter de façon tactile tout en ayant une résistance suffisante aux conditions d'usage pour résister pendant toute la durée de vie du document sécurisé.An object of the invention is to provide a sheet of fibrous material comprising a security element which is both easy to detect in a tactile manner while having a sufficient resistance to the conditions of use to withstand throughout the life time secure document.

RESUME DE L'INVENTIONSUMMARY OF THE INVENTION

En vue de la réalisation de ce but on propose selon l'invention une feuille en matière fibreuse comportant des segments de fibres à papier entremêlés, et un élément de sécurité comportant une couche de colle portée par la feuille et des segments de fibres de sécurité fixés dans la couche de colle, dans laquelle les fibres de sécurité ont une extrémité enchâssée dans la couche de colle en formant un angle avec la feuille et une extrémité libre s'étendant en saillie par rapport à la couche de colle et disposée pour être tactilement perceptible par rapport à la surface de la feuille. Ainsi, par un choix approprié de la composition, des dimensions et de la répartition des fibres de sécurité il est possible d'obtenir un effet tactile facile à reconnaître et présentant une résistance à l'abrasion correspondant à la durée de vie du document sécurisé.In order to achieve this object, a sheet of fibrous material having entangled paper fiber segments is provided according to the invention, and a security element comprising a layer of glue carried by the sheet and fixed segments of safety fibers. in the glue layer, wherein the security fibers have an end embedded in the glue layer at an angle to the sheet and a free end projecting from the glue layer and arranged to be tactile perceptible compared to the surface of the leaf. Thus, by an appropriate choice of composition, dimensions and distribution of the security fibers it is possible to obtain an easily recognizable tactile effect with abrasion resistance corresponding to the life of the secure document.

Selon une version avantageuse de l'invention la couche de colle est portée par un segment de film fixé à la feuille. De préférence le segment de film est inséré dans les segments de fibres à papier. Ainsi les éléments de sécurité peuvent être réalisés en série sur une machine adaptée à la technique de fixation des segments de fibres de sécurité sur le film et les éléments de sécurité obtenus peuvent être fixés à la feuille soit lors de la fabrication de celle-ci, soit dans une étape de traitement ultérieur de la feuille.According to an advantageous version of the invention the adhesive layer is carried by a film segment attached to the sheet. Preferably the film segment is inserted into the paper fiber segments. Thus the security elements can be made in series on a machine adapted to the securing technique of the security fiber segments on the film and the security elements obtained can be fixed to the sheet or during the manufacture thereof, either in a subsequent processing step of the sheet.

BREVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description qui suit d'un mode de réalisation particulier non limitatif de l'invention en référence aux figures ci-jointes parmi lesquelles:

  • La figure 1 est une vue de dessus partielle d'un billet de banque comportant des éléments de sécurité selon l'invention.
  • La figure 2 est une vue en coupe selon la ligne II-II de la figure 1.
Other features and advantages of the invention will appear on reading the following description of a particular non-limiting embodiment of the invention with reference to the attached figures among which:
  • Figure 1 is a partial top view of a bank note having security elements according to the invention.
  • Figure 2 is a sectional view along the line II-II of Figure 1.

DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

En référence aux figures, le billet de banque selon l'invention comporte de façon connue en soi un segment de film, ici un ruban 1 qui est inséré dans des segments de fibres à papier entremêlés formant une feuille en matière fibreuse 2. Pour assurer une fixation satisfaisante du segment de film dans la feuille en matière fibreuse 2 le segment de film est de préférence réalisé à partir d'un film en matière plastique microperforé ou à partir d'une feuille de papier comprenant des fibres cellulosiques ou synthétiques, ou un mélange de celles-ci. Egalement de façon connue en soi le billet de banque illustré comporte des fenêtres 3 à l'aplomb l'une de l'autre en regard d'une portion du segment de film en matière plastique 1.With reference to the figures, the banknote according to the invention comprises, in a manner known per se, a segment of film, here a ribbon 1 which is inserted into segments of interleaved paper fibers forming a sheet of fibrous material 2. To ensure satisfactory attachment of the film segment in the fibrous sheet 2, the film segment is preferably made from a microperforated plastic film or from a paper sheet comprising cellulosic or synthetic fibers, or a mixture thereof. Also in a manner known per se the illustrated banknote comprises windows 3 plumb with each other facing a portion of the segment of plastic film 1.

Selon le mode de réalisation de l'invention illustré le billet de banque comporte trois éléments de sécurité qui sont réalisés sur le ruban 1 préalablement à son insertion dans les segments de fibres à papier lors de la fabrication de la feuille 2. Les trois éléments de sécurité sont réalisés par flocage de segments de fibres, c'est-à-dire par dépôt d'une couche de colle dans laquelle une extrémité des segments de fibres de sécurité est enchâssée tout en maintenant les segments de fibres de sécurité selon une orientation déterminée en utilisant un champ électrostatique.According to the embodiment of the invention illustrated the bank note comprises three security elements which are made on the ribbon 1 prior to its insertion into the paper fiber segments during the manufacture of the sheet 2. The three elements of security are achieved by flocking of fiber segments, that is by depositing a layer of glue in which one end of the security fiber segments is embedded while maintaining the security fiber segments in a determined orientation using an electrostatic field.

Dans l'exemple illustré le premier élément de sécurité 4 est réalisé en déposant tout d'abord sur le film 1 une couche de colle 5 en forme de B et en déposant des segments de fibres de sécurité 6 ayant par exemple un diamètre de 30 µm et une longueur de 100 µm la répartition des segments de fibres de sécurité 6 étant telle que les fibres sont espacées latéralement les unes des autres d'une distance de l'ordre de 30 µm.In the example illustrated, the first security element 4 is produced by first depositing a layer of B-shaped glue 5 on the film 1 and depositing segments of security fibers 6 having, for example, a diameter of 30 μm. and a length of 100 μm the distribution of the security fiber segments 6 being such that the fibers are laterally spaced from each other by a distance of the order of 30 microns.

Un deuxième élément de sécurité 7 est réalisé sur le film 1 en déposant sur celui-ci une couche de colle 8 en forme de d dans laquelle sont enchâssés des segments de fibres de sécurité 9 ayant par exemple un diamètre de 40 µm et une hauteur de 80 µm, maintenus perpendiculairement au film 1 pendant l'opération de flocage et disposés selon une densité appropriée pour que les segments de fibres de sécurité 9 soient espacés latéralement les uns des autres d'environ 40 µm.A second security element 7 is made on the film 1 by depositing on it a layer of adhesive 8 in d- shape in which are embedded security fiber segments 9 having for example a diameter of 40 microns and a height of 80 microns, maintained perpendicular to the film 1 during the flocking operation and arranged at a density suitable for the segments safety fibers 9 are laterally spaced from each other by about 40 microns.

Le troisième élément de sécurité 10 est réalisé sur le segment de film 1 de façon à venir en regard d'une fenêtre 3 lors de la réalisation de la feuille de papier 2. Ce troisième élément de sécurité 10 comporte une couche de colle 11 en forme de F dans laquelle est enchâssée une des extrémités de segments de fibres de sécurité 12 ayant un diamètre de 20 µm et une hauteur d'environ 80 µm la densité étant suffisante pour que les segments de fibre de sécurité 12 soient quasiment accolés les uns aux autres en s'étendant perpendiculairement au ruban 1.The third security element 10 is made on the film segment 1 so as to come opposite a window 3 during the production of the paper sheet 2. This third security element 10 comprises a layer of adhesive 11 in the form of of F in which is encased one end of segments of security fibers 12 having a diameter of 20 microns and a height of about 80 microns the density being sufficient for the segments of security fiber 12 are almost contiguous to each other extending perpendicularly to the ribbon 1.

La feuille de papier 2 est ensuite réalisée de façon connue en soi pour que le ruban 1 s'étende à peu près à mi-épaisseur de la feuille de papier 2 comme illustré sur la figure 2. Après réalisation de la feuille de papier 2 les segments de fibres de sécurité 6 sont couchés sur la surface de la feuille de papier comme illustré par la figure 2, par exemple en effectuant un brossage suivi d'un écrasement à chaud de la feuille de papier 2. Lors de la fabrication de la feuille de papier on remarquera que des segments de fibre à papier s'insèrent entre les segments de fibres de sécurité 6 et 9 de sorte que celles-ci sont non seulement enchâssées dans la couche de colle correspondante mais également dans une partie de la feuille de papier. Après finition du billet de banque le premier élément de sécurité 4 a un toucher semblable à un velours couché c'est-à-dire que la perception tactile est différente suivant le sens dans lequel on déplace un doigt sur l'élément de sécurité. A ce propos on notera que pour une meilleure compréhension de la structure de l'élément de sécurité selon l'invention les proportions n'ont pas été respectées entre les dimensions des éléments de sécurité et les dimensions de leurs constituants. Le deuxième éléments de sécurité dont les segments de fibres sont maintenus verticaux sur la majeure partie de leur longueur aura un toucher semblable à une brosse dure tandis que le troisième élément de sécurité dont les segments de fibres de sécurité sont maintenus seulement à la base aura un toucher semblable à une brosse souple.The sheet of paper 2 is then produced in a manner known per se so that the ribbon 1 extends approximately at mid-thickness of the paper sheet 2 as illustrated in FIG. 2. After making the sheet of paper 2, the sheets 1 segments of security fibers 6 are lying on the surface of the paper sheet as shown in Figure 2, for example by performing a brushing followed by hot crushing of the paper sheet 2. During the manufacture of the sheet It will be noted that paper fiber segments are inserted between the security fiber segments 6 and 9 so that they are not only embedded in the corresponding adhesive layer but also in a portion of the paper sheet. . After finishing the bank note the first security element 4 has a similar feel to a velvet lying that is to say that the tactile perception is different depending on the direction in which one moves a finger on the security element. In this connection it should be noted that for a better understanding of the structure of the security element according to the invention the proportions have not been respected between the dimensions of the security elements and the dimensions of their constituents. The second security feature whose fiber segments are held vertical over most of their length will have a hard brush-like feel, while the third security element whose security fiber segments are held only at the base will have a touch like a soft brush.

En utilisant des segments de fibres de sécurité à haute résistance comme des polyamides on réalise un élément de sécurité très résistant.By using high strength security fiber segments such as polyamides, a very strong security element is produced.

Bien entendu l'invention n'est pas limitée aux modes de réalisation décrits et on peut y apporter des variantes de réalisation sans sortir du cadre de l'invention tel que défini par les revendications. En particulier la position du ruban 1 pourra être modifiée selon les techniques habituelles permettant de faire alterner un effleurement du ruban 1 à la surface de la feuille de papier sur l'une ou l'autre de ses faces. Un toucher particulier souhaité pourra être obtenu en faisant varier la nature des fibres utilisées ainsi que leur diamètre, leur hauteur et leur inclinaison par rapport à la surface de la feuille de papier 2.Naturally, the invention is not limited to the embodiments described and variant embodiments can be made without departing from the scope of the invention as defined by the claims. In particular the position of the ribbon 1 may be modified according to the usual techniques for alternating a touch of the ribbon 1 to the surface of the sheet of paper on one or the other of its faces. A particular desired touch can be obtained by varying the nature of the fibers used as well as their diameter, their height and their inclination with respect to the surface of the sheet of paper 2.

Les éléments de sécurité selon l'invention pourront également être réalisés directement sur la feuille de papier après réalisation de celle-ci bien que ce mode de réalisation pose un problème de surépaisseur des éléments de sécurité par rapport à l'épaisseur nominale qui est habituellement recherchée pour les billets de banque.The security elements according to the invention may also be made directly on the sheet of paper after realization thereof although this embodiment poses a problem of extra thickness of the security elements with respect to the nominal thickness which is usually sought for banknotes.

Bien que l'invention ait été décrite en relation avec un segment de film 1 en forme de ruban, les éléments de sécurité selon l'invention peuvent également être réalisés sur des segments de films en forme de timbres qui peuvent soit être insérés pendant la fabrication de la feuille de papier, soit être appliqués sur une feuille de papier 2 après finition de celle-ci par exemple par collage à chaud.Although the invention has been described in connection with a strip-shaped film segment 1, the security elements according to the invention can also be made on stamp-shaped film segments which can either be inserted during manufacture of the paper sheet, or be applied to a sheet of paper 2 after finishing thereof for example by hot gluing.

Claims (6)

Feuille en matière fibreuse (2) comportant des segments de fibres à papier entremêlés et au moins un élément de sécurité (4, 7, 10) comprenant une couche de colle (5, 8, 11) portée par la feuille et des segments de fibres de sécurité (6, 9, 12) fixés dans la couche de colle, caractérisée en ce que les segments de fibres de sécurité ont une extrémité enchâssée dans la couche de colle en formant un angle avec la feuille et une extrémité libre en saillie par rapport à la couche de colle et disposée pour être tactilement perceptible par rapport à la surface de la feuille.Fibrous sheet (2) having interleaved paper fiber segments and at least one security element (4, 7, 10) comprising a layer of glue (5, 8, 11) carried by the sheet and fiber segments security device (6, 9, 12) fixed in the adhesive layer, characterized in that the security fiber segments have an end embedded in the adhesive layer at an angle to the sheet and a free end projecting from to the adhesive layer and arranged to be tactilely perceptible with respect to the surface of the sheet. Feuille selon la revendication 1 caractérisée en ce que la couche de colle (5, 8, 11) est portée par un segment de film (1) fixé à la feuille.Sheet according to Claim 1, characterized in that the adhesive layer (5, 8, 11) is carried by a film segment (1) fixed to the sheet. Feuille selon la revendication 2 caractérisée en ce que le segment de film (1) est inséré dans les segments de fibres à papier.Sheet according to Claim 2, characterized in that the film segment (1) is inserted into the paper fiber segments. Feuille selon la revendication 3 caractérisée en ce que les segments de fibres à papier s'étendent entre les segments de fibres de sécurité (6, 9) et en ce que l'extrémité libre des segments de fibres de sécurité s'étend en saillie par rapport aux segments de fibres à papier.Leaf according to claim 3 characterized in that the segments of papermaking fibers extend between the security fiber segments (6, 9) and in that the free end segments of security fibers protrudes by compared to paper fiber segments. Feuille selon la revendication 4 caractérisée en ce que l'extrémité libre des segments de fibres de sécurité (6) est couchée sur une face de la feuille 2.Sheet according to Claim 4, characterized in that the free end of the safety fiber segments (6) is lying on one side of the sheet 2. Feuille selon la revendication 2 caractérisée en ce que le segment de film comporte une portion s'étendant dans une fenêtre 3 de la feuille et en ce que cette portion porte un des éléments de sécurité (10).Sheet according to claim 2 characterized in that the film segment comprises a portion extending in a window 3 of the sheet and in that this portion carries one of the security elements (10).
EP07290998A 2006-08-23 2007-08-10 Sheet of fibrous material comprising tactile safety elements Active EP1892329B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07290998T PL1892329T3 (en) 2006-08-23 2007-08-10 Sheet of fibrous material comprising tactile safety elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0607461A FR2905126B1 (en) 2006-08-23 2006-08-23 FIBROUS SHEET HAVING TOUCH SAFETY ELEMENTS.

Publications (2)

Publication Number Publication Date
EP1892329A1 true EP1892329A1 (en) 2008-02-27
EP1892329B1 EP1892329B1 (en) 2011-04-13

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EP07290998A Active EP1892329B1 (en) 2006-08-23 2007-08-10 Sheet of fibrous material comprising tactile safety elements

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EP (1) EP1892329B1 (en)
AT (1) ATE505589T1 (en)
DE (1) DE602007013844D1 (en)
ES (1) ES2361229T3 (en)
FR (1) FR2905126B1 (en)
PL (1) PL1892329T3 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2311303A (en) * 1996-03-18 1997-09-24 Portals Ltd Reinforced paper incorporating a security element
WO2005026440A1 (en) * 2003-09-11 2005-03-24 Giesecke & Devrient Gmbh Planar security element
US20060088160A1 (en) * 2004-10-27 2006-04-27 Lexmark International, Inc. Method and apparatus for generating and printing a security stamp with custom logo on an electrophotographic printer
EP1658992A1 (en) * 2004-11-23 2006-05-24 European Central Bank Method for producing tactile security features on security documents

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2311303A (en) * 1996-03-18 1997-09-24 Portals Ltd Reinforced paper incorporating a security element
WO2005026440A1 (en) * 2003-09-11 2005-03-24 Giesecke & Devrient Gmbh Planar security element
US20060088160A1 (en) * 2004-10-27 2006-04-27 Lexmark International, Inc. Method and apparatus for generating and printing a security stamp with custom logo on an electrophotographic printer
EP1658992A1 (en) * 2004-11-23 2006-05-24 European Central Bank Method for producing tactile security features on security documents

Also Published As

Publication number Publication date
DE602007013844D1 (en) 2011-05-26
PL1892329T3 (en) 2011-07-29
FR2905126B1 (en) 2010-01-22
EP1892329B1 (en) 2011-04-13
ATE505589T1 (en) 2011-04-15
ES2361229T3 (en) 2011-06-15
FR2905126A1 (en) 2008-02-29

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