EP2445726B1 - Security document with differentiated tactile areas, and method for manufacturing same - Google Patents

Security document with differentiated tactile areas, and method for manufacturing same Download PDF

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Publication number
EP2445726B1
EP2445726B1 EP10724741.3A EP10724741A EP2445726B1 EP 2445726 B1 EP2445726 B1 EP 2445726B1 EP 10724741 A EP10724741 A EP 10724741A EP 2445726 B1 EP2445726 B1 EP 2445726B1
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EP
European Patent Office
Prior art keywords
datum
transparent
fact
imprint
translucent material
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.)
Not-in-force
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EP10724741.3A
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German (de)
French (fr)
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EP2445726A1 (en
Inventor
Julien Gillot
Xavier Borde
Florian Demaimay
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Oberthur Fiduciaire SAS
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Oberthur Fiduciaire SAS
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Publication of EP2445726A1 publication Critical patent/EP2445726A1/en
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Publication of EP2445726B1 publication Critical patent/EP2445726B1/en
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Classifications

    • 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
    • B42D25/324—Reliefs
    • 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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes

Definitions

  • the present invention is in the field of security documents, more particularly of identity, comprising variable data and which are in particular in the form of a booklet such as a passport ("ID3" format) or card ( format called “ID2" or ID1), or a self-adhesive label.
  • a passport e.g., a passport
  • ID2 e.g., a passport
  • ID1 e.g., a self-adhesive label
  • the first control most practiced is a so-called first level control. It is characterized in that no external means (apparatus or equipment) is used to authenticate the document.
  • Security documents are also known which comprise on a medium, data visible to the naked eye, such as a text or an image, these data being coated with an impression of a transparent or translucent material forming a tactile element in relief.
  • this "varnish" forming a tactile element is to protect the data below, or even to make their perception easier by people without or visually impaired, or even to make it more difficult to falsify data.
  • This element is constituted by the outline of a biometric element and each point of this tactile element provides an optical magnification magnifying glass.
  • the document DE-10 2005 062047 describes a card-type document, such as an identity card, in which data is printed in relief. This is for example the signature of the card holder or the outline of his photograph.
  • a first aspect of the invention relates to a security document, such as an identity card or a passport, which comprises, on a medium, at least one item visible to the naked eye, such as a text or an image, this datum being constituted by at least a first region having a first hue, and at least a second region, having a second hue different from the first, this datum being coated with an impression of a transparent material or translucent forming tactile element in relief.
  • said transparent or translucent material impression superimposed on said first region has a thickness and / or percentage of coverage and / or gloss and / or is performed in a different graphic (s) of that (or those) printing of transparent or translucent material superimposed on said second region, this difference being visually perceptible.
  • data is meant information such as a text or image, excluding the background of the security document itself.
  • said two regions will be covered with a material of the varnished kind, with different characteristics (thickness and / or percentage of overlap and / or gloss and / or graphics) so that in case of will of falsification data, it is particularly difficult to reproduce this varnish according to the same characteristics as originally.
  • the coverage printing is therefore specific to each region it covers, so that it has unique characteristics that bind it indissociably to the data of the security document to which it relates.
  • Another aspect of the invention relates to a method of manufacturing such a document.
  • This method is characterized in that it comprises at least one step of providing said support with said data and at least one additional step of coating said datum with a transparent or translucent impression forming a tactile element, in particular with using an inkjet printer.
  • This method also includes the variant according to which a laminate (ie a sheet) is positioned on the data, on which printing is carried out.
  • a laminate ie a sheet
  • data acquisition is also meant the loading of the data from a database.
  • the document represented figure 1 is for example an identity card 1 of standardized format.
  • This card forms a support which can be made of any material such as fiduciary paper, polyvinyl chloride (PVC), polycarbonate, polyethylene, or any other fibrous, plastic or hybrid medium known in the field of identity documents. .
  • the document 1 comprises, on the support 10, data visible to the naked eye, such as a text or an image.
  • text is meant, for example, one or more words relating to the identity or physical characteristics of the cardholder. We generally speak of "variable mentions”.
  • this may include information relating to the issuing authority of said card.
  • image should be understood in its broadest sense, which means that it includes both the representation of the portrait of the holder of the document, a drawing of the issuing authority of this document, such as a flag, an emblem, etc. This is called “fixed mentions”.
  • luminance refers to the gray levels of the text and the image.
  • This data 2 in this case the letter F, is printed on the support.
  • photo-polymerizable inks consisting mainly of oligomers, monomers and photoinitiators can be used.
  • Such an ink is at ambient temperature in the liquid state, its viscosity and its surface tension allowing printing by an ink-jet printing head, of piezoelectric type, for example.
  • the ejection of the ink through the nozzles of this print head can be performed continuously or on demand (in English "drop on demand").
  • the drying (polymerization reaction) of the ink is carried out by exposing it under a lamp generating ultraviolet radiation with a wavelength of between 120 and 400 nanometers.
  • Non-limiting examples include laser etching, heat transfer, dye diffusion, traditional photography and holography, such as volume holography.
  • the data 2 which here consists of a representation of the letter F, comprises a first region 20 of light shade T 1 , and a second region 21, contiguous to the first region 20, of dark shade T 2 .
  • these regions could be distant from each other, that is to say non-contiguous.
  • these data are completely coated with a transparent or translucent material impression 3 made in such a way that the printing superimposed on the first region 20 here has a thickness which is different from the printing 31 of material transparent or translucent superimposed on the second region 21.
  • This difference in thickness is also perceptible tactilely and visually.
  • the print could be slightly colored, while remaining translucent.
  • the region 21 is also provided with a discontinuous printing 31, with printed lines and parallel 310, separated by non-printed intervals 311. It is also a linear frame.
  • the printing of the region 20 has a percentage of varnish coating of this region different from the printing 31 of the second region 21, this percentage difference in coverage being perceptible and visually perceptible.
  • the two linear fields are oriented in the same direction, but their coverage areas are different.
  • the printing of varnish is characterized by three data.
  • the first datum is that relating to the shape of the prints 300 and 310. These are parallel lines.
  • these patterns will be repeated to form a printed frame whose individual lines have the same orientation.
  • This orientation may however be modified, depending on the particular case.
  • the angle likely to capture the attention should preferably be chosen around 45 ° with respect to the horizontal.
  • the gloss of the varnish is varied, from matte to gloss, or vice versa.
  • pattern repetition is done at different frequencies, preferably 15 to 50 lpi ("lines per inch").
  • the repetition frequency of the pattern (or the alphanumeric character scale) varies the spacing between each point or stroke.
  • This lineup allows optimum image quality while maintaining good sensitivity to touch, around 20 to 30 lpi.
  • This passport 1 consists of a data page 4, the rest of the booklet being symbolized by the reference 5.
  • the data page 4 contains a two-dimensional portrait of the passport holder, printed in an area 6.
  • the data 2 according to the present invention here consist of variable mentions relating to the surname and first name of the holder of the passport.
  • a means of falsifying a document according to the invention consists in overprinting on the existing image a different image or providing some elements modifying the original image.
  • the mask having micro-reliefs very varied, they will disrupt the contact with the overprinting ink, thus leading to a degraded overprinting of the added elements.
  • varnish additives such as pigments or fluorescent dyes, pigments or dyes visible under infrared, or tracers, thermochromes and / or photothermochromes .
  • Her hair 22 as well as her eyebrows 23 constitute a first region A of shade T 1 , while her lips 24 form a second region B of shade T 2 , the remainder of the face 25 constituting a third region C of shade T 3 .
  • this example is simplified because the photograph reproduced here presents shades T1, T2 and T3 with already shades of gray inside.
  • This method is preferably implemented using computer means.
  • the data is acquired or loaded from a database, in this case to a basic image, preferably in color.
  • This image is processed at block 71 to transform the base image into a black-and-white x-grayscale image, where x is an integer at least 2 and less than 256.
  • a first step referenced n1 to the figure 12 we adjust the filter so as to keep all the gray levels of the image.
  • a step n2 represented by the blocks 72B and 73B, the dithering filter is restricted to keep only the highest gray levels, and then a second print pass is made.
  • the screening filter is further restricted so as to implement a third or even an "nth" print pass (blocks 73C and D).
  • the figure 13 substantially adopts the same methodology as that just described with reference to the figure 12 .
  • Alphanumeric characters (for example, the date of birth of the wearer) are selected from these data and will constitute the printed frame.
  • Block 74 is used to create an alphanumeric character screening filter with modulation of the shape of the frame, its angle and its screen.
  • the filter is applied to the gray level image so that the printed dot density is a function of the percentage of coverage of the base image.
  • the image is rasterized and personalized in black and white.

Description

La présente invention s'inscrit dans le domaine des documents de sécurité, plus particulièrement d'identité, comportant des données variables et qui se présentent notamment sous la forme de livret tel qu'un passeport (format dit "ID3") ou de carte (format dit "ID2" ou ID1), ou une étiquette autocollante.The present invention is in the field of security documents, more particularly of identity, comprising variable data and which are in particular in the form of a booklet such as a passport ("ID3" format) or card ( format called "ID2" or ID1), or a self-adhesive label.

Dans ce domaine, la lutte contre les tentatives de falsification et de contrefaçon fait l'objet de développements de dispositifs toujours plus évolués. L'objectif de ces dispositifs est, outre de protéger contre une quelconque tentative de fraude, de permettre le contrôle par l'autorité compétente dudit document.In this field, the fight against attempts at falsification and counterfeiting is the subject of developments of ever more advanced devices. The purpose of these devices is, besides protecting against any attempt of fraud, to allow the control by the competent authority of said document.

Le premier contrôle le plus pratiqué est un contrôle dit de premier niveau. Il est caractérisé en ce qu'aucun moyen extérieur (appareil ou équipement) n'est utilisé pour procéder à l'authentification du document.The first control most practiced is a so-called first level control. It is characterized in that no external means (apparatus or equipment) is used to authenticate the document.

De fait, les sécurités imaginées sont d'autant plus pertinentes qu'elles permettent une authentification par un contrôle de premier niveau. C'est dans ce cadre que la présente invention se situe.In fact, the security imagined are all the more relevant as they allow authentication by a first level control. It is in this context that the present invention is located.

Dans le domaine des documents d'identité, les données sensibles sont d'une part les éléments personnels liés au porteur (photographie, nom, prénom etc.) et d'autre part les éléments variables (numéro de passeport, date de délivrance etc.). Ces éléments de personnalisation, sont sensibles puisque les principales tentatives de fraude consistent, non pas à réaliser une contrefaçon complète du document, mais à falsifier au moins une partie de ces données issues d'un document authentique. On comprend donc l'intérêt de :

  • assurer une protection physique des données en rendant difficile l'accès et par conséquence la modification des données ;
  • complexifier les moyens de réalisation de ces données (utilisation de multiples techniques de personnalisation) ;
  • multiplier les zones de personnalisation ;
  • faciliter le contrôle de l'authenticité du document par des sécurités de premier niveau ;
  • rendre évidente toute tentative de falsification.
In the field of identity documents, the sensitive data are on the one hand the personal elements related to the bearer (photograph, surname, first name etc.) and on the other hand the variable elements (passport number, date of issue etc.). ). These elements of personalization, are sensitive since the main fraud attempts consist, not to realize a complete counterfeit of the document, but to falsify at least a part of these data resulting from an authentic document. We understand the interest of:
  • ensure physical protection of data by making access difficult and consequently changing the data;
  • to complicate the means of realization of these data (use of multiple personalization techniques);
  • multiply the areas of personalization;
  • facilitate the control of the authenticity of the document by first level security;
  • make obvious any attempt to falsify.

D'autre part, il est connu dans le domaine de l'impression fiduciaire, de proposer une impression permettant, par déformation de la surface imprimée, de réaliser des éléments dits tactiles. Cette impression appelée "taille douce" est utilisée lors de l'impression des billets de banque, notamment.On the other hand, it is known in the field of fiduciary printing, to provide an impression allowing, by deformation of the printed surface, to produce so-called tactile elements. This print called "soft cut" is used when printing banknotes, among others.

On connaît par ailleurs des documents de sécurité qui comportent sur un support, des données visibles à l'oeil nu, telles qu'un texte ou une image, ces données étant revêtues d'une impression d'une matière transparente ou translucide formant élément tactile en relief.Security documents are also known which comprise on a medium, data visible to the naked eye, such as a text or an image, these data being coated with an impression of a transparent or translucent material forming a tactile element in relief.

La fonction de ce "vernis" formant élément tactile est de protéger les données situées dessous, voire de rendre leur perception plus aisée par des personnes non ou malvoyantes, voire même de rendre plus difficile la falsification des données.The function of this "varnish" forming a tactile element is to protect the data below, or even to make their perception easier by people without or visually impaired, or even to make it more difficult to falsify data.

On connaît du document EP-1 676 715 un support de données tel qu'une carte d'identité à la surface de laquelle est prévu un élément tactile.Document is known EP-1,676,715 a data carrier such as an identity card on the surface of which is provided a touch element.

Cet élément est constitué par le contour d'un élément biométrique et chaque point de cet élément tactile procure un agrandissement optique formant loupe.This element is constituted by the outline of a biometric element and each point of this tactile element provides an optical magnification magnifying glass.

Le document DE-10 2005 062047 décrit un document de type carte, tel qu'une carte d'identité, au sein de laquelle des données sont imprimées en relief. Il s'agit par exemple de la signature du titulaire de la carte ou du contour de sa photographie.The document DE-10 2005 062047 describes a card-type document, such as an identity card, in which data is printed in relief. This is for example the signature of the card holder or the outline of his photograph.

La présente invention vise à perfectionner encore les types de document mentionnés ci-dessus de manière à :

  • prévenir d'une tentative de falsification par sur impression, mais aussi à :
  • fournir aux autorités de contrôle un moyen visuel et tactile pour vérifier l'authenticité du document ;
  • garantir un haut degré de sécurité dû à la complexité de réalisation de la dite impression ;
  • fournir une alternative aux modes de personnalisation traditionnels en deux dimensions (impression jet d'encre, gravure laser, transfère thermique).
The present invention aims to further improve the types of document mentioned above so as to:
  • prevent an attempt to falsify by printing, but also to:
  • provide the supervisory authorities with a visual and tactile means to verify the authenticity of the document;
  • to guarantee a high degree of security due to the complexity of making said printing;
  • provide an alternative to traditional two-dimensional customization modes (inkjet printing, laser engraving, thermal transfer).

Ainsi, un premier aspect de l'invention concerne un document de sécurité, tel qu'une carte d'identité ou un passeport, qui comporte, sur un support, au moins une donnée visible à l'oeil nu, telle qu'un texte ou une image, cette donnée étant constituée d'au moins une première région présentant une première teinte, et au moins une deuxième région, présentant une deuxième teinte différente de la première, cette donnée étant revêtue d'une impression d'une matière transparente ou translucide formant élément tactile en relief.Thus, a first aspect of the invention relates to a security document, such as an identity card or a passport, which comprises, on a medium, at least one item visible to the naked eye, such as a text or an image, this datum being constituted by at least a first region having a first hue, and at least a second region, having a second hue different from the first, this datum being coated with an impression of a transparent material or translucent forming tactile element in relief.

Il est remarquable en ce que ladite impression de matière transparente ou translucide superposée à ladite première région présente une épaisseur et/ou un pourcentage de recouvrement et/ou une brillance et/ou est réalisée selon un graphisme différent(s) de celui (ou de ceux) de l'impression de matière transparente ou translucide superposée à ladite deuxième région, cette différence étant perceptible visuellement.It is remarkable that said transparent or translucent material impression superimposed on said first region has a thickness and / or percentage of coverage and / or gloss and / or is performed in a different graphic (s) of that (or those) printing of transparent or translucent material superimposed on said second region, this difference being visually perceptible.

Par le terme "donnée", on entend une information telle qu'un texte ou une image, à l'exclusion du fond du document de sécurité, proprement dit.By the term "data" is meant information such as a text or image, excluding the background of the security document itself.

Grâce à l'invention, lesdites deux régions vont être recouvertes d'une matière du genre vernis, de caractéristiques différentes (épaisseur et/ou pourcentage de recouvrement et/ou brillance et/ou graphisme) de sorte qu'en cas de volonté de falsification des données, il est particulièrement difficile de reproduire ce vernis selon les mêmes caractéristiques qu'à l'origine.Thanks to the invention, said two regions will be covered with a material of the varnished kind, with different characteristics (thickness and / or percentage of overlap and / or gloss and / or graphics) so that in case of will of falsification data, it is particularly difficult to reproduce this varnish according to the same characteristics as originally.

L'impression de couverture est donc spécifique à chaque région qu'elle recouvre, de sorte qu'elle possède des caractéristiques uniques qui la lient indissociablement aux données du document de sécurité auquel elle se rapporte.The coverage printing is therefore specific to each region it covers, so that it has unique characteristics that bind it indissociably to the data of the security document to which it relates.

De plus, ces différentes caractéristiques sont perceptibles au moins visuellement, de sorte que le contrôle de l'authenticité du document est facilité.In addition, these different characteristics are visible at least visually, so that the control of the authenticity of the document is facilitated.

Selon d'autres caractéristiques avantageuses de l'invention :

  • ladite deuxième région est contigüe à la première ;
  • ladite une épaisseur et/ou ledit pourcentage de recouvrement est proportionnel à la "luminance" de ladite région ;
  • ladite épaisseur est élevée ou faible, selon que la région est respectivement sombre ou claire et/ou que le pourcentage de recouvrement est respectivement élevé ou faible, selon que la région est respectivement sombre ou claire, ou inversement ;
  • ladite impression de matière transparente ou translucide est une impression "totale", c'est-à-dire qui recouvre l'ensemble de la surface de ladite donnée, lesdites première et seconde régions se différenciant par une différence d'épaisseur de l'impression de matière transparente ou translucide ;
  • ladite donnée est une donnée imprimée sur ledit support, revêtue d'une impression de matière transparente ou translucide, elle-même recouverte d'au moins la répétition de ladite donnée imprimée, elle-même revêtue d'une impression de matière transparente ou translucide ;
  • ladite impression est une impression "partielle", c'est-à-dire qui ne recouvre pas l'ensemble de la surface de ladite donnée, les zones imprimées constituant des motifs présentant une forme et/ou une orientation et/ou une linéature prédéterminée(s) ;
  • lesdits motifs ont la forme de traits, de points, circulaires ou non, de figures, géométriques ou non, ou de caractères alphanumériques ;
  • ladite donnée est imprimée sur le support au moyen d'au moins une encre qui ne pénètre qu'au plus partiellement dans ledit support ;
  • ladite encre est une encre photo polymérisable ;
  • ladite impression se superpose exactement avec ladite première région, respectivement ladite deuxième région, ou est décalée et/ou agrandie et/ou rétrécie par rapport à celle-ci.
According to other advantageous features of the invention:
  • said second region is contiguous with the first;
  • said thickness and / or percentage of coverage is proportional to the "luminance" of said region;
  • said thickness is high or low, depending on whether the region is respectively dark or light and / or that the percentage of recovery is respectively high or low, depending on whether the region is respectively dark or light, or vice versa;
  • said impression of transparent or translucent material is a "total" impression, that is to say which covers the entire surface of said datum, said first and second regions being differentiated by a difference in the thickness of the printing transparent or translucent material;
  • said datum is a datum printed on said support, coated with an impression of transparent or translucent material, itself covered with at least the repetition of said printed datum, itself coated with an impression of transparent or translucent material;
  • said printing is a "partial" printing, that is to say which does not cover the entire surface of said datum, the printed areas constituting patterns having a predetermined shape and / or orientation and / or lineation (s);
  • said patterns are in the form of lines, dots, circular or not, figures, geometric or not, or alphanumeric characters;
  • said data is printed on the support by means of at least one ink which penetrates only partially into said support;
  • said ink is a photo-polymerizable ink;
  • said printing is superimposed exactly with said first region, respectively said second region, or is shifted and / or enlarged and / or narrowed with respect thereto.

Un autre aspect de l'invention concerne un procédé de fabrication d'un tel document.Another aspect of the invention relates to a method of manufacturing such a document.

Ce procédé est caractérisé par le fait qu'il comprend au moins une étape qui consiste à pourvoir ledit support de ladite donnée et au moins une étape supplémentaire consistant à revêtir ladite donnée d'une impression transparente ou translucide formant élément tactile, notamment à l'aide d'une imprimante à jet d'encre.This method is characterized in that it comprises at least one step of providing said support with said data and at least one additional step of coating said datum with a transparent or translucent impression forming a tactile element, in particular with using an inkjet printer.

Ce procédé inclut également la variante selon laquelle un laminat (c'est à dire une feuille) est positionné sur les données, sur lequel on réalise l'impression.This method also includes the variant according to which a laminate (ie a sheet) is positioned on the data, on which printing is carried out.

Selon des modes de réalisation possibles de ce procédé :

  • on fixe sur le support un support additionnel qui porte ladite donnée préalablement imprimée ;
  • on imprime directement sur ledit support, ladite donnée ;
  • l'on procède dans un premier temps à l'impression de la donnée sur ledit support, dans un deuxième temps à l'impression de matière transparente ou translucide, dans un troisième temps à une nouvelle impression de ladite donnée sur la matière transparente ou translucide, puis à l'impression, sur cette donnée, de matière transparente ou translucide ;
  • ladite impression de matière transparente ou translucide est réalisée en plusieurs passes successives, de manière à générer localement des surépaisseurs ;
  • l'on met en oeuvre les étapes suivantes :
    • acquisition de ladite donnée ;
    • traitement de cette donnée pour les transformer en une image en noir et blanc à x niveaux de gris, x étant un entier au moins égal à 2 et inférieur à 256 ;
    • création d'un filtre de tramage avec des motifs présentant une forme et/ou une orientation et/ou une linéature prédéterminée(s) ;
    • association à chaque niveau de gris d'un pourcentage de recouvrement spécifique ;
    • impression avec ladite matière transparente ou translucide de la trame résultante de la combinaison dudit filtre de tramage et de chaque pourcentage de recouvrement spécifique ;
      • on procède à ladite impression de matière transparente d'épaisseurs différenciées, en plusieurs passes successives, en réduisant à chaque fois la gamme de niveaux de gris à conserver ;
      • lesdits motifs ont une forme de caractères alphanumériques spécifiques au titulaire dudit document.
According to possible embodiments of this method:
  • an additional support is fixed on the support which carries the previously printed data;
  • said data is printed directly on said medium;
  • the first step is to print the data on said support, in a second step to the printing of transparent or translucent material, in a third step to a new printing of said data on the transparent or translucent material then to the printing, on this datum, of transparent or translucent material;
  • said impression of transparent or translucent material is made in several successive passes, so as to locally generate extra thicknesses;
  • the following steps are implemented:
    • acquisition of said data;
    • processing this datum to transform them into a black-and-white x-grayscale image, x being an integer at least 2 and less than 256;
    • creating a dither filter with patterns having a predetermined shape and / or orientation and / or lineation (s);
    • associating each gray level with a specific percentage of coverage;
    • printing with said transparent or translucent material the resulting weft of the combination of said screening filter and each specific percentage of coverage;
      • said printing of transparent material of differentiated thicknesses is carried out in several successive passes, each time reducing the range of gray levels to be preserved;
      • the said reasons are in the form of alphanumeric characters specific to the holder of the said document.

Par l'expression "acquisition de donnée", on entend également le chargement de la donnée à partir d'une base de données.By the term "data acquisition" is also meant the loading of the data from a database.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description qui va suivre de certains modes de réalisation. Cette description sera faite en référence aux dessins annexés dans lesquels :

  • La figure 1 est une vue de dessus simplifiée d'un document selon l'invention tel qu'une carte d'identité comportant des données visibles à l'oeil nu, consistant ici en la représentation de la lettre F.
  • La figure 2 est une vue de dessus de cette lettre F agrandie, destinée à montrer deux zones de teintes différentes qui la caractérisent.
  • La figure 3 est une vue en coupe agrandie, selon le plan III-III de la figure 2, de la lettre F de cette figure 2.
  • La figure 4 est une vue d'un autre mode de réalisation des données figurant sur le document, ces données consistant encore en la lettre F.
  • Les figures 5, 6 et 7 sont des vues d'autres modes de réalisation possibles des impressions de matière transparente ou translucide utilisables dans le cadre de l'invention.
  • Les figures 8 et 9 sont des vues simplifiées en perspective de deux modes de réalisation d'un passeport conforme à l'invention.
  • La figure 10 est un portrait qui peut être intégré dans un document de sécurité conforme à l'invention ;
  • La figure 11 est un portrait identique au précédent sur lequel on a repéré différentes zones de teintes différentes.
  • Les figures 12 et 13 sont des organigrammes destinés à illustrer les principales étapes d'un procédé de fabrication d'un tel document.
Other features and advantages of the invention will appear on reading the following description of some embodiments. This description will be made with reference to the appended drawings in which:
  • The figure 1 is a simplified top view of a document according to the invention such as an identity card comprising data visible to the naked eye, here consisting in the representation of the letter F.
  • The figure 2 is a view from above of this enlarged letter F, intended to show two zones of different hues which characterize it.
  • The figure 3 is an enlarged sectional view, according to plan III-III of the figure 2 , of the letter F of this figure 2 .
  • The figure 4 is a view of another embodiment of the data contained in the document, these data still consisting of the letter F.
  • The Figures 5, 6 and 7 are views of other possible embodiments of transparent or translucent material printing usable in the context of the invention.
  • The Figures 8 and 9 are simplified perspective views of two embodiments of a passport according to the invention.
  • The figure 10 is a portrait that can be integrated into a security document according to the invention;
  • The figure 11 is a portrait identical to the previous one on which we have identified different areas of different hues.
  • The figures 12 and 13 are flow charts for illustrating the main steps of a method of manufacturing such a document.

Avant de rentrer dans la description des modes de réalisation illustrés sur les figures, il est important de noter que ceux-ci sont complètement et exclusivement illustratifs et donnent des exemples simplifiés de réalisation, dans un seul but de bonne compréhension de l'invention.Before going into the description of the embodiments illustrated in the figures, it is important to note that these are completely and exclusively illustrative and give simplified examples of embodiment, for one purpose of good understanding of the invention.

Le document représenté à la figure 1 est par exemple une carte d'identité 1 de format normalisé.The document represented figure 1 is for example an identity card 1 of standardized format.

Cette carte forme un support qui peut être réalisé en toute matière tel que du papier fiduciaire, du chlorure de polyvinyle (PVC), du polycarbonate, du polyéthylène, ou tout autre support fibreux, plastique ou hybride connu dans le domaine des documents d'identité.This card forms a support which can be made of any material such as fiduciary paper, polyvinyl chloride (PVC), polycarbonate, polyethylene, or any other fibrous, plastic or hybrid medium known in the field of identity documents. .

Le document 1 comporte, sur le support 10, des données visibles à l'oeil nu, tel qu'un texte ou une image.The document 1 comprises, on the support 10, data visible to the naked eye, such as a text or an image.

Par le terme "texte", on entend par exemple un ou plusieurs mots relatifs à l'identité ou aux caractéristiques physiques du titulaire de la carte. On parle généralement de "mentions variables".By the term "text" is meant, for example, one or more words relating to the identity or physical characteristics of the cardholder. We generally speak of "variable mentions".

On entend également que cela puisse englober des informations relatives à l'autorité émettrice de ladite carte.It is also understood that this may include information relating to the issuing authority of said card.

Quand au terme "image", on doit l'entendre dans sa plus large acception, ce qui signifie que cela englobe aussi bien la représentation du portrait du titulaire du document, qu'un dessin relevant de l'autorité émettrice de ce document, tel qu'un drapeau, un emblème, etc. On parle alors de "mentions fixes".When the term "image" should be understood in its broadest sense, which means that it includes both the representation of the portrait of the holder of the document, a drawing of the issuing authority of this document, such as a flag, an emblem, etc. This is called "fixed mentions".

Par ailleurs, par le terme "luminance", tel qu'utilisé ici, on entend les niveaux de gris du texte et de l'image.On the other hand, the term "luminance" as used herein refers to the gray levels of the text and the image.

Dans le cas illustré ici et pour des raisons de clarté, les données 2 en question sont constituées de la lettre majuscule en caractère bâton F.In the case illustrated here and for the sake of clarity, the data 2 in question consists of the capital letter in character F.

Ces données 2, en l'occurrence la lettre F, sont imprimées sur le support.This data 2, in this case the letter F, is printed on the support.

On peut utiliser pour cette impression des encres photo-polymérisables constituées principalement d'oligomères, de monomères et de photo-initiateurs. Une telle encre est à température ambiante à l'état liquide, sa viscosité et sa tension de surface permettant une impression par une tête d'impression à jet d'encre, de type piézoélectrique par exemple.For this printing, photo-polymerizable inks consisting mainly of oligomers, monomers and photoinitiators can be used. Such an ink is at ambient temperature in the liquid state, its viscosity and its surface tension allowing printing by an ink-jet printing head, of piezoelectric type, for example.

L'éjection de l'encre au travers des buses de cette tête d'impression peut être réalisée en continu ou à la demande (en anglais "drop on demand").The ejection of the ink through the nozzles of this print head can be performed continuously or on demand (in English "drop on demand").

Le séchage (réaction de polymérisation) de l'encre est réalisé par exposition de celle-ci sous une lampe générant un rayonnement ultraviolet de longueur d'onde comprise entre 120 et 400 nanomètres.The drying (polymerization reaction) of the ink is carried out by exposing it under a lamp generating ultraviolet radiation with a wavelength of between 120 and 400 nanometers.

Lorsqu'on utilise de telles encres, une partie seulement du liquide pénètre dans le support lorsque celui-ci est du papier, de sorte que la réticulation des polymères lors du séchage assure ainsi une solide liaison entre les fibres du support et l'encre déposée, la partie de l'encre n'ayant pas pénétré le support étant polymérisée en surface.When using such inks, only a part of the liquid enters the support when the latter is paper, so that the crosslinking of the polymers during drying thus ensures a strong bond between the fibers of the support and the deposited ink , the part of the ink that has not penetrated the support being polymerized on the surface.

On peut également utiliser un type d'encre qui ne pénètre pas à l'intérieur du papier, mais s'agglomère simplement sur celui-ci, à sa surface.One can also use a type of ink that does not penetrate inside the paper, but simply agglomerates on it, on its surface.

On peut toutefois aussi utiliser une impression à jet d'encre avec des encres à base d'eau ou de solvant, tel que cela est largement répandu.However, it is also possible to use ink jet printing with water-based or solvent-based inks, as is widely known.

Ces encres pénètrent totalement dans le papier de sorte qu'une tentative de falsification endommage de façon irréversible le support. Par contre, elle ne protège pas de la surimpression.These inks penetrate completely into the paper so that an attempt at forgery irreversibly damages the medium. On the other hand, it does not protect from overprinting.

Dans d'autres modes de réalisation, on peut utiliser d'autres techniques pour l'impression desdites données.In other embodiments, other techniques can be used for printing said data.

A titre non limitatif, on peut citer la gravure laser, le transfert thermique, la diffusion de colorants, la photographie traditionnelle ou encore l'holographie, telle qu'une holographie de volume.Non-limiting examples include laser etching, heat transfer, dye diffusion, traditional photography and holography, such as volume holography.

En se reportant à nouveau aux figures 1 et 2 annexées, on constate que les données 2 qui consistent ici en une représentation de la lettre F, comporte une première région 20 de teinte claire T1, ainsi qu'une deuxième région 21, contigüe à la première région 20, de teinte foncée T2.Referring back to Figures 1 and 2 appended, it is found that the data 2 which here consists of a representation of the letter F, comprises a first region 20 of light shade T 1 , and a second region 21, contiguous to the first region 20, of dark shade T 2 .

Dans un mode de réalisation non représenté, ces régions pourraient être distantes l'une de l'autre, c'est-à-dire non contiguës.In an embodiment not shown, these regions could be distant from each other, that is to say non-contiguous.

Ces deux teintes sont donc différentes l'une de l'autre.These two colors are therefore different from each other.

Conformément à l'invention, ces données sont revêtues totalement d'une impression de matière transparente ou translucide 3 réalisée de telle manière que l'impression 30 superposée à la première région 20 présente ici une épaisseur qui est différente de l'impression 31 de matière transparente ou translucide superposée à la deuxième région 21.According to the invention, these data are completely coated with a transparent or translucent material impression 3 made in such a way that the printing superimposed on the first region 20 here has a thickness which is different from the printing 31 of material transparent or translucent superimposed on the second region 21.

Cette différence d'épaisseur est par ailleurs perceptible tactilement et visuellement.This difference in thickness is also perceptible tactilely and visually.

Dans un mode de réalisation particulier, l'impression pourrait être légèrement colorée, tout en restant translucide.In a particular embodiment, the print could be slightly colored, while remaining translucent.

On comprend donc que l'épaisseur de la matière transparente ou translucide, que l'on désignera indifféremment sous le terme générique "vernis", est proportionnelle à la "luminance" de la région correspondante.It is therefore clear that the thickness of the transparent or translucent material, which will be referred to indifferently under the generic term "varnish", is proportional to the "luminance" of the corresponding region.

La façon dont on procède à l'impression de la matière transparente ou translucide (vernis) sera décrite plus loin dans la description.The manner in which the transparent or translucent material (varnish) is printed will be described later in the description.

Dans le mode de réalisation de la figure 4, on a à nouveau affaire à des données 2 consistant en la lettre F, avec une première région 20 et une deuxième région 21 de teinte différente.In the embodiment of the figure 4 we again deal with data 2 consisting of the letter F, with a first region 20 and a second region 21 of different hue.

On a ici affaire, au-dessus de la première région 20, à une impression partielle de vernis, de manière à créer des lignes imprimées et parallèles 300, séparées par des intervalles non imprimés 301. Il s'agit donc d'une trame linéaire.We are dealing here, above the first region 20, a partial printing of varnish, so as to create printed lines and parallel 300, separated by non-printed intervals 301. It is therefore a linear grid .

La région 21 est quant à elle pourvue également d'une impression discontinue 31, avec des lignes imprimées et parallèles 310, séparées par des intervalles non imprimés 311. Il s'agit également d'une trame linéaire.The region 21 is also provided with a discontinuous printing 31, with printed lines and parallel 310, separated by non-printed intervals 311. It is also a linear frame.

Selon l'invention, l'impression 30 de la région 20 présente un pourcentage de recouvrement de vernis de cette région différent de l'impression 31 de la seconde région 21, cette différence de pourcentage de recouvrement étant perceptible tactilement et visuellement. Dans cet exemple, les deux trames linéaires sont orientées dans la même direction, mais leurs surfaces de couverture sont différentes.According to the invention, the printing of the region 20 has a percentage of varnish coating of this region different from the printing 31 of the second region 21, this percentage difference in coverage being perceptible and visually perceptible. In this example, the two linear fields are oriented in the same direction, but their coverage areas are different.

Pour résumer les modes de réalisation des figures 2 et 4, on constate que l'impression de vernis, qui forme une trame ou encore un "masque", n'est en aucun cas une impression uniforme mais est différenciée en fonction des régions 20 et 21, de sorte que cette impression est propre à chaque région qu'elle recouvre, et qu'elle possède des caractéristiques uniques qui la lient indissociablement aux données du document de sécurité.To summarize the embodiments of Figures 2 and 4 it is found that the printing of varnish, which forms a frame or a "mask", is in no way a uniform impression but is differentiated according to the regions 20 and 21, so that this impression is specific to each region that it covers, and that it has unique characteristics that bind it indissociably to the data of the security document.

En d'autres termes, si une atteinte à l'authenticité du document est commise par un contrefacteur et, si celui-ci détruit ne serait-ce que partiellement le vernis, il lui faudra le reconstituer tout en respectant les caractéristiques initiales d'épaisseur et/ou de pourcentage de recouvrement.In other words, if an infringement of the authenticity of the document is committed by a counterfeiter and, if it destroys only partially the varnish, it will have to reconstitute it while respecting the initial characteristics of thickness. and / or percentage of recovery.

S'il vient à retoucher les données, il lui faudra également reconstituer le vernis en fonction des nouvelles données qu'il a mises en place.If he retouches the data, he will also have to reconstitute the varnish according to the new data he has put in place.

Dans ces deux modes de réalisation, on a envisagé que les épaisseurs et pourcentages de recouvrement soient des caractéristiques dissociées.In these two embodiments, it has been envisaged that the overlapping thicknesses and percentages are dissociated characteristics.

Toutefois, on préfèrera procéder à l'impression de ce vernis en adoptant une épaisseur et un pourcentage de recouvrement différent en fonction de la région concernée.However, it will be preferable to proceed to the printing of this varnish by adopting a thickness and a different percentage of recovery depending on the region concerned.

Dans le mode de réalisation de la figure 4, l'impression de vernis est caractérisée par trois données.In the embodiment of the figure 4 , the printing of varnish is characterized by three data.

La première donnée est celle relative à la forme des impressions 300 et 310. Il s'agit en l'occurrence de lignes parallèles.The first datum is that relating to the shape of the prints 300 and 310. These are parallel lines.

Toutefois, il pourrait s'agir de cercles 300 et 310 tels qu'illustrés à la figure 5, de figures géométriques telles que le polygone 300 de la figure 6 ou encore de caractères alphanumériques tels que le sigle OT référencé 300 à la figure 7.However, it could be circles 300 and 310 as illustrated in figure 5 , geometric figures such as polygon 300 of the figure 6 or else alphanumeric characters such as the initials OT referenced 300 to the figure 7 .

De préférence, ces motifs seront répétés pour constituer une trame imprimée dont les lignes individuelles ont la même orientation. Cette orientation peut toutefois être modifiée, selon le cas d'espèce.Preferably, these patterns will be repeated to form a printed frame whose individual lines have the same orientation. This orientation may however be modified, depending on the particular case.

Dans la mesure où le vernis est incolore ou translucide, l'angle susceptible de capter l'attention doit préférentiellement être choisi aux alentours de 45° par rapport à l'horizontale. Ainsi, selon l'angle d'inclinaison du document en passant d'une observation normale à une observation rasante, on fait varier la brillance du vernis, de mat à brillant, ou inversement.Insofar as the varnish is colorless or translucent, the angle likely to capture the attention should preferably be chosen around 45 ° with respect to the horizontal. Thus, according to the angle of inclination of the document passing from a normal observation to a grazing observation, the gloss of the varnish is varied, from matte to gloss, or vice versa.

Enfin, afin de moduler la sensibilité au toucher, la répétition des motifs est faite à différentes fréquences, de préférence de 15 à 50 lpi ("lines per inch" pour "ligne par pouce").Finally, in order to modulate touch sensitivity, pattern repetition is done at different frequencies, preferably 15 to 50 lpi ("lines per inch").

La fréquence de répétition du motif (ou l'échelle de caractère alphanumérique) fait varier l'espacement entre chaque point ou trait.The repetition frequency of the pattern (or the alphanumeric character scale) varies the spacing between each point or stroke.

Cette linéature permet une qualité d'image optimum tout en conservant une bonne sensibilité au toucher, autour de 20 à 30 lpi.This lineup allows optimum image quality while maintaining good sensitivity to touch, around 20 to 30 lpi.

A des fréquences supérieures ou inférieures, il n'est plus possible de former des caractères distincts.At higher or lower frequencies, it is no longer possible to form distinct characters.

Dans un mode de réalisation non représenté, il est possible de sur-imprimer sur le vernis, une répétition des données déjà imprimées sur le support puis, sur celles-ci, à procéder à une nouvelle impression de matière transparente ou translucide, le résultat de cette succession d'opérations étant de donner un effet de volume et de relief à l'image ainsi obtenue.In an embodiment not shown, it is possible to overprint on the varnish, a repetition of the data already printed on the support and then, on these, to proceed to a new printing of transparent or translucent material, the result of this succession of operations being to give an effect of volume and relief to the image thus obtained.

Aux figures 8 à 9 sont représentées très schématiquement deux modes de réalisation d'un document de sécurité consistant ici en un passeport.To the Figures 8 to 9 two embodiments of a security document consisting here of a passport are very schematically represented.

Ce passeport 1 est constitué d'une page de données 4, le reste du livret étant symbolisé par la référence 5.This passport 1 consists of a data page 4, the rest of the booklet being symbolized by the reference 5.

A la figure 8, la page de données 4 contient un portrait en deux dimensions du porteur du passeport, imprimé dans une zone 6.To the figure 8 , the data page 4 contains a two-dimensional portrait of the passport holder, printed in an area 6.

Les données 2 conformes à la présente invention consistent ici en des mentions variables relatives au nom et au prénom du titulaire du passeport.The data 2 according to the present invention here consist of variable mentions relating to the surname and first name of the holder of the passport.

Dans le mode de réalisation de la figure 9, on se trouve dans une situation similaire à la précédente, à l'exception que le portrait est directement imprimé sur le support du passeport, tandis que les données 2 consistent en une reproduction du portrait du titulaire, en trois dimensions.In the embodiment of the figure 9 we are in a situation similar to the previous one, except that the portrait is directly printed on the passport support, while the data 2 consists of a reproduction of the portrait of the holder, in three dimensions.

On notera qu'un moyen de falsification d'un document selon l'invention consiste à sur-imprimer sur l'image existante une image différente ou d'apporter quelques éléments modifiant l'image originale.It will be noted that a means of falsifying a document according to the invention consists in overprinting on the existing image a different image or providing some elements modifying the original image.

Quand il s'agit de la photo d'un visage, on pense notamment à l'addition de cheveux, d'une moustache, un changement de la couleur des yeux, ou encore une réimpression totale de l'ovale du visage.When it comes to the photo of a face, we think in particular of the addition of hair, a mustache, a change in the color of the eyes, or a total reprint of the oval of the face.

Une telle falsification par surimpression directe d'une image ou d'éléments d'image sur l'image d'origine n'est pas possible puisque les éléments constitutifs du masque, à l'aide d'une encre photo-polymérisable, ne permettent pas une accroche suffisante aux encres de type jet d'encre à base d'eau ou de solvant.Such falsification by direct overprinting an image or picture elements on the original image is not possible since the constituent elements of the mask, using a photo-polymerizable ink, do not allow not a sufficient grip on water-based or solvent-based inkjet inks.

Toutefois, si cette accroche était suffisante, les éléments sur-imprimés coloreraient le masque constitué par le vernis qui, normalement, est incolore.However, if this grip was sufficient, the over-printed elements would color the mask constituted by the varnish which, normally, is colorless.

De plus, le masque présentant des micro-reliefs très variés, ces derniers vont perturber le contact avec l'encre de surimpression, menant ainsi à une surimpression dégradée des éléments rajoutés.In addition, the mask having micro-reliefs very varied, they will disrupt the contact with the overprinting ink, thus leading to a degraded overprinting of the added elements.

Enfin, cette sur impression serait effectuée sur le vernis et non pas sur l'image d'origine.Finally, this print would be performed on the varnish and not on the original image.

La tentative de falsification serait donc révélée.The attempt to falsify would therefore be revealed.

Il est bien entendu possible d'augmenter le niveau de complexité de cette sécurité en ajoutant notamment au vernis des additifs tels que des pigments ou colorants fluorescents, des pigments ou colorants visibles sous infrarouge, ou encore des traceurs, des thermochromes et/ou des photothermochromes.It is of course possible to increase the level of complexity of this security by adding in particular to the varnish additives such as pigments or fluorescent dyes, pigments or dyes visible under infrared, or tracers, thermochromes and / or photothermochromes .

Il est également possible de combiner des effets de l'image de base avec le vernis, notamment comme décrit dans le brevet FR 97 05597 .It is also possible to combine effects of the basic image with the varnish, especially as described in FR 97 05597 .

En se référant maintenant aux figures 10 et 11, on a représenté le visage d'une personne, ce qui constitue les données 2 selon l'invention.Referring now to Figures 10 and 11 , the face of a person is represented, which constitutes the data 2 according to the invention.

Sa chevelure 22 ainsi que ses sourcils 23 constituent une première région A de teinte T1, tandis que ses lèvres 24 constituent une deuxième région B de teinte T2, le reste du visage 25 constituant une troisième région C de teinte T3. Bien entendu, cet exemple est simplifié car la photographie reproduite ici présente des teintes T1, T2 et T3 avec déjà des nuances de gris à l'intérieur.Her hair 22 as well as her eyebrows 23 constitute a first region A of shade T 1 , while her lips 24 form a second region B of shade T 2 , the remainder of the face 25 constituting a third region C of shade T 3 . Of course, this example is simplified because the photograph reproduced here presents shades T1, T2 and T3 with already shades of gray inside.

Ainsi, lorsque l'on revêt cette image d'une impression de matière transparente et translucide, on va globalement différencier trois régions A, B et C d'épaisseur et/ou de pourcentage de recouvrement différent.Thus, when this image is coated with an impression of transparent and translucent material, three regions A, B and C of different thickness and / or percentage of coverage will generally be differentiated.

Là encore, il apparaît clairement que cette impression de vernis est intimement liée à la forme et aux teintes de l'image de base.Again, it is clear that this impression of varnish is intimately related to the shape and hues of the basic image.

On se reportera maintenant aux organigrammes des figures 12 et 13 pour illustrer un mode de réalisation d'un procédé de fabrication d'un document selon l'invention.We will now refer to the organization charts of figures 12 and 13 to illustrate an embodiment of a method of manufacturing a document according to the invention.

Ce procédé est préférentiellement mis en oeuvre à l'aide de moyens informatiques.This method is preferably implemented using computer means.

En référence à la figure 12 et plus particulièrement au bloc 70, on procède à l'acquisition de données ou au chargement de ces dernières à partir d'une banque de données, en l'occurrence à une image de base, de préférence en couleur.With reference to the figure 12 and more particularly to block 70, the data is acquired or loaded from a database, in this case to a basic image, preferably in color.

Cette image est traitée au niveau du bloc 71 pour transformer l'image de base en une image en noir et blanc à x niveau de gris, x étant un entier au moins égal à 2 et inférieur à 256.This image is processed at block 71 to transform the base image into a black-and-white x-grayscale image, where x is an integer at least 2 and less than 256.

On procède alors à la création d'un filtre de tramage informatique avec des motifs acquis d'une base de données présentant donc une forme et/ou une orientation et/ou une linéature prédéterminée(s).This is followed by the creation of a computer screening filter with patterns acquired from a database thus having a predetermined shape and / or orientation and / or lineation (s).

Dans une première étape référencée n1 à la figure 12, on règle le filtre de manière à conserver l'ensemble des niveaux de gris de l'image.In a first step referenced n1 to the figure 12 , we adjust the filter so as to keep all the gray levels of the image.

C'est le bloc 72A.This is block 72A.

On procède alors à une première impression de l'ensemble des données, ce qui correspond au bloc 73A.We then proceed to a first impression of all data, which corresponds to block 73A.

Dans une étape n2 représentée par les blocs 72B et 73B, on restreint le filtre de tramage pour ne conserver que les niveaux de gris les plus élevés, et on procède alors à un deuxième passage d'impression.In a step n2 represented by the blocks 72B and 73B, the dithering filter is restricted to keep only the highest gray levels, and then a second print pass is made.

Dans les étapes n3 et n (blocs 72C et D), on restreint encore le filtre de tramage de manière à mettre en oeuvre un troisième, voire un "énième" passage d'impression (blocs 73C et D).In steps n3 and n (blocks 72C and D), the screening filter is further restricted so as to implement a third or even an "nth" print pass (blocks 73C and D).

Finalement, on aura procédé à des passages répétés dans les zones de couleur sombre (cela peut être l'inverse), ce qui accentue les différences de relief.Finally, there will be repeated passages in the dark areas (this may be the opposite), which accentuates the differences in relief.

La figure 13 reprend sensiblement la même méthodologie que celle qui vient d'être décrite en référence à la figure 12.The figure 13 substantially adopts the same methodology as that just described with reference to the figure 12 .

Toutefois, on se sert ici d'un fichier comprenant des données de personnalisation du titulaire du document de sécurité.However, a file containing personalization data of the security document holder is used here.

C'est le bloc 78.This is block 78.

On sélectionne parmi ces données des caractères alphanumériques (par exemple, la date de naissance du porteur) qui constitueront la trame imprimée.Alphanumeric characters (for example, the date of birth of the wearer) are selected from these data and will constitute the printed frame.

C'est le bloc 79.This is block 79.

On procède au niveau du bloc 74 à la création d'un filtre de tramage de caractère alphanumérique avec une modulation de la forme de la trame, de son angle et de sa linéature.Block 74 is used to create an alphanumeric character screening filter with modulation of the shape of the frame, its angle and its screen.

Bien entendu, on aura procédé préalablement, au niveau des blocs 70 et 71, à l'acquisition d'une image de base et à la transformation en une image à différents niveaux de gris.Of course, it has been previously carried out, at blocks 70 and 71, the acquisition of a base image and the transformation into an image at different levels of gray.

Au niveau du bloc 75, on applique le filtre à l'image en niveau de gris de manière que la densité de points imprimés est fonction du pourcentage de recouvrement de l'image de base.At block 75, the filter is applied to the gray level image so that the printed dot density is a function of the percentage of coverage of the base image.

Dans le bloc 76, l'image est tramée et personnalisée en noir et blanc.In block 76, the image is rasterized and personalized in black and white.

Et, au final, on procède à l'impression, par exemple à l'aide d'une imprimante à jet d'encre (bloc 77).And, in the end, one proceeds to the printing, for example using an ink jet printer (block 77).

Dans les exemples qui viennent d'être décrits, on a principalement envisagé que les impressions qui se superposent aux deux régions présentent une épaisseur et/ou un pourcentage de recouvrement différent(s).In the examples which have just been described, it has mainly been envisaged that the impressions which are superimposed on the two regions have a different thickness and / or percentage of overlap (s).

Toutefois, on peut aussi prévoir des modes de réalisation dans lesquels ces impressions présentent une brillance différente et/ou sont réalisées selon un graphisme différent (motifs différents), éventuellement en combinaison avec une épaisseur et/ou un pourcentage de recouvrement différent.However, it is also possible to provide embodiments in which these prints have a different gloss and / or are produced according to a different graphic (different patterns), possibly in combination with a different thickness and / or percentage of overlap.

Par l'expression "brillance différente", on inclut bien entendu le cas dans lequel une impression est brillante, et l'autre est mate.By the term "different gloss" is of course included the case where one print is glossy, and the other is matte.

Claims (19)

  1. A security document (1), such as an identity card or a passport, which includes, on a medium (10), at least one datum (2) visible to the naked eye, such as a text or an image, consisting of at least one first region (20; A) having a first color (T1), and at least one second region (21; B) having a second color (T2) different from the first, this datum (2) being coated with an imprint (3, 30, 31) of a transparent or translucent material forming a raised/recessed tactile element,
    characterized by the fact that said imprint (30) of transparent or translucent material superposed on said first region (20; A) has a thickness and/or a covering percentage and/or a brightness and/or is made according to different graphics from that (or those) of the imprint (31) of transparent or translucent material superposed on said second region (21; B), this difference being visually perceptible.
  2. The document according to claim 1, characterized by the fact that said second region (21; B) is contiguous to the first (20; A).
  3. The document according to claim 1 or 2, characterized by the fact that said one thickness and/or said covering percentage is proportional to the "luminance" of said region.
  4. The document according to claim 3, characterized by the fact that said thickness is large or small, depending on whether the region is dark or brilliant respectively and/or whether the covering percentage is large or small, depending on whether the region is dark or brilliant respectively, or vice versa.
  5. The document according to one of the preceding claims, characterized by the fact that said imprint (3) of transparent or translucent material is a "complete" imprint, i.e. which covers the whole of the surface area of said datum (2), said first and second regions (20; A; 21; B) being differentiated by a thickness difference of the imprint of transparent or translucent material.
  6. The document according to the preceding claim, characterized by the fact that said datum (2) is a datum printed on said medium (10), coated with an imprint (3, 30, 31) of transparent or translucent material, itself covered with at least the repetition of said printed datum (2), itself coated with an imprint (3, 30, 31) of transparent material or translucent.
  7. The document according to one of claims 1 to 4, characterized by the fact that said imprint (3, 30, 31) is a "partial" imprint, i.e. which does not cover the whole of the surface area of said datum, the printed areas forming patterns (300, 310) having predetermined shape and/or orientation and/or lineation.
  8. The document according to the preceding claim, characterized by the fact that said patterns (300, 310) have the shape of lines, points, either circular or not, of figures, either geometrical or not, or of alphanumerical characters.
  9. The document according to one of the preceding claims, characterized by the fact that said datum (2) is printed on the medium (10) by means of at least one ink which only penetrates at most partially into said medium (10).
  10. The document according to the preceding claim, characterized by the fact that said ink is a photo-polymerizable ink.
  11. The document according to one of the preceding claims, characterized by the fact that said imprint (3, 30, 31) is exactly superposed with said first region (20; A), respectively said second region (21; B) or is shifted and/or enlarged and/or shrunk relatively to the latter.
  12. A method for manufacturing a document according to claim 1, characterized by the fact that it comprises at least one step which consists of providing said medium (10) with said datum (2) and at least one additional step consisting of coating said datum (2) with a transparent or translucent imprint (3, 30, 31) forming a tactile element, notably by means of an ink jet printer.
  13. The method according to claim 12, characterized by the fact that an additional medium is attached on the medium (10), which bears said datum (2) printed beforehand.
  14. The method according to claim 12, characterized by the fact that said datum (2) is directly printed on said medium (10).
  15. The method according to claim 12, according to which said imprint of transparent or translucent material (3, 30, 31) is a continuous imprint which covers the whole of the surface area of said datum (2), characterized by the fact that in a first phase, it is proceeded with printing the datum (2) on said medium (10), in a second phase with printing of the transparent or translucent material (3, 30, 31), in a third phase with new printing of said datum (2) on the transparent or translucent material (3, 30, 31) and then with printing on this datum, transparent or translucent material (3, 30, 31).
  16. The method according to one of claims 12 or 15, characterized by the fact that said imprint of transparent or translucent material (3, 30, 31) is carried out in several successive passes, so as to locally generate overthicknesses.
  17. The method according to claim 12, according to which said imprint of transparent or translucent material is a discontinuous imprint, characterized in that the following steps are applied:
    - acquiring said datum (2);
    - processing this datum so as to transform it into a black and white image with x grey levels, x being an integer at least equal to 2 and less than 256;
    - generating a screening filter with patterns (300, 310) having a predetermined shape and/or orientation and/or lineation;
    - associating with each grade level a specific covering percentage;
    - printing with said transparent or translucent material (3, 30, 31) the screen resulting from the combination of said screening filter and of each specific covering percentage.
  18. The method according to claim 17, wherein it is proceeded with said printing of transparent or translucent material (3, 30, 31) with differentiated thicknesses, characterized by the fact that it is proceeded with this printing in several successive passes, by reducing every time the range of grey levels to be retained.
  19. The method according to one of claims 17 or 18, characterized by the fact that said patterns (300, 310) have a shape of alphanumerical characters specific to the owner of said document (1).
EP10724741.3A 2009-06-24 2010-06-03 Security document with differentiated tactile areas, and method for manufacturing same Not-in-force EP2445726B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0954302A FR2947209B1 (en) 2009-06-24 2009-06-24 SAFETY DOCUMENT WITH DIFFERENTIATED TOUCH ZONES, AND METHOD FOR MANUFACTURING THE SAME.
PCT/EP2010/057759 WO2010149476A1 (en) 2009-06-24 2010-06-03 Security document with differentiated tactile areas, and method for manufacturing same

Publications (2)

Publication Number Publication Date
EP2445726A1 EP2445726A1 (en) 2012-05-02
EP2445726B1 true EP2445726B1 (en) 2014-10-08

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EP10724741.3A Not-in-force EP2445726B1 (en) 2009-06-24 2010-06-03 Security document with differentiated tactile areas, and method for manufacturing same

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EP (1) EP2445726B1 (en)
AR (1) AR077224A1 (en)
FR (1) FR2947209B1 (en)
WO (1) WO2010149476A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2600672A (en) * 2020-09-11 2022-05-11 De La Rue Int Ltd Security documents and methods of manufacture thereof
GB2601036A (en) * 2020-09-11 2022-05-18 De La Rue Int Ltd Security devices and methods of manufacture thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104349904B (en) 2012-06-11 2016-09-21 锡克拜控股有限公司 For the method printing tactile security feature

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2816546B1 (en) * 2000-11-10 2003-08-29 Leroux Gilles Sa METHOD OF RELIEF MARKING OF A SUPPORTED OBJECT IN PLASTIC MATERIAL AND DEVICE IMPLEMENTING THE METHOD
DE102004062922A1 (en) * 2004-12-28 2006-07-06 Austria Card Plastikkarten Und Ausweissysteme Gmbh Data carrier with tactile feature, manufacturing process and application
DE102005062047B4 (en) * 2005-12-22 2020-02-13 Mühlbauer Gmbh & Co. Kg Method for applying characters and / or symbols on an identification card

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2600672A (en) * 2020-09-11 2022-05-11 De La Rue Int Ltd Security documents and methods of manufacture thereof
GB2601036A (en) * 2020-09-11 2022-05-18 De La Rue Int Ltd Security devices and methods of manufacture thereof
GB2601036B (en) * 2020-09-11 2023-05-10 De La Rue Int Ltd Security devices and methods of manufacture thereof

Also Published As

Publication number Publication date
FR2947209B1 (en) 2011-07-22
EP2445726A1 (en) 2012-05-02
AR077224A1 (en) 2011-08-10
WO2010149476A1 (en) 2010-12-29
FR2947209A1 (en) 2010-12-31

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