WO2013160598A1 - Method for forming secure colour laser images and document produced thereby - Google Patents

Method for forming secure colour laser images and document produced thereby Download PDF

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Publication number
WO2013160598A1
WO2013160598A1 PCT/FR2013/050887 FR2013050887W WO2013160598A1 WO 2013160598 A1 WO2013160598 A1 WO 2013160598A1 FR 2013050887 W FR2013050887 W FR 2013050887W WO 2013160598 A1 WO2013160598 A1 WO 2013160598A1
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Prior art keywords
printed
document
layer
pixels
sub
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PCT/FR2013/050887
Other languages
French (fr)
Inventor
Jean Pierre Lazzari
Jean Marc Lazzari
Original Assignee
Jean Pierre Lazzari
Jean Marc Lazzari
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Jean Pierre Lazzari, Jean Marc Lazzari filed Critical Jean Pierre Lazzari
Priority to EP13723846.5A priority Critical patent/EP2877347B1/en
Publication of WO2013160598A1 publication Critical patent/WO2013160598A1/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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/267—Marking of plastic artifacts, e.g. with laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/34—Multicolour thermography
    • 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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/148—Transitory images, i.e. images only visible from certain viewing angles
    • B42D2035/06—
    • B42D2035/14—
    • B42D2035/16—
    • B42D2035/26—

Definitions

  • the present invention relates to a method of forming secure color laser images. It finds applications particularly in identity images relating to identity documents: identity cards, credit cards, vital cards, passports, driving licenses, secure entry badges, etc.
  • Patent WO 2011/124774 A1 describes a method of personalization of embedded latent images, for identity documents, comprising a latent image, composed of a matrix of pixels consisting of colored sub-pixels, and of white sub-pixels, embedded in a transparent protective layer.
  • a latent image composed of a matrix of pixels consisting of colored sub-pixels, and of white sub-pixels, embedded in a transparent protective layer.
  • gray levels are created on subpixels by covering them with a black non-reflecting surface, through the transparent protective layer, creating the gray levels of the image definitive color laser. This treatment allows the personalization of the latent image, consisting of colored sub-pixels.
  • the personalized image must be sufficiently reflective, to be observed in ambient light, without the use of an additional light source.
  • Patent Application No. 11/00578 discloses a method for producing a high-efficiency reflective laser image, comprising a latent image consisting of colored sub-pixels, surrounded by transparent non-colored areas, covered with a protective layer transparent sensitive to laser radiation, which will be called thereafter, "lasérisable layer".
  • a laser beam causes black, non-reflective surfaces, which more or less cover the surfaces of colored sub-pixels, and unstained surfaces, to appear in this layer of laserisable protection, in order to reveal the gray levels of a personalized image.
  • the personalized image is seen by reflection on underlying reflective sub-layers, especially white, or through varnish, to increase the reflectivity of the image.
  • the reflectivity of the image is fundamental because it must allow the eye to integrate through
  • additive composition the light beams in the colors of the sub-pixels, and non-colored areas, emitted by inverse reflection of the incident light.
  • Patent Application No. 11/03919 discloses a color laser image process, whose laserizable layer is located under the latent image, comprising colored sub-pixels, and unstained surfaces, and a reflective surface.
  • the gray levels of the final image are obtained by a laser beam, which through the sub pixels, reveals the gray levels in the laserizable layer, by the reflectivity of the incident light, which is modulated by these levels of Grey.
  • the latent image printed with colored sub-pixels, separated by unstained surfaces forms a uniform colored background, on which, the secure patterns printed on this background, do not stand out clearly in the view of the controller, who verifies the identity document.
  • the present invention aims to overcome the disadvantages of the state of the art, making the reasons safe, perfectly visible to the controller who verifies the identity document.
  • the invention proposes that the printing of the sub-pixels does not cover the surface of the security patterns, which are then made on an unstained surface.
  • the subject of the invention is a method for forming secure color laser images from an assembly comprising a layer of
  • a printed latent image consisting of colored sub-pixels separated by non-printed surfaces, security patterns, a laserizable layer, reflective means and a laser beam which forms in the laserizable layer the gray levels of a final personalized image , the assembly being laminated on a support.
  • the printed surface of the subpixels does not cover the surface of the security patterns that are made in this unprinted surface, and the gray levels of the image
  • the colored sub-pixels are printed by offset, inkjet, or any other technique known to those skilled in the art. Unstained or non-printed areas separate the sub-pixels and increase the reflectivity of the final image.
  • the colored sub-pixels, and the non-printed areas are organized in parallel columns, or in small uniformly distributed areas.
  • the latent image may consist of triplets or quadruplets colored with sub-pixels.
  • the unprinted surface in which the security patterns are made, reveals the underlying reflective surface, which is preferably white.
  • the security reasons are realized in this surface not printed, and therefore are not affected by the colored background of the sub-pixels.
  • the realization of security reasons includes printing techniques known to those skilled in the art, laser engraving techniques, which punctually blacks the laserizable layer, stamping techniques, holography, elements reported in non-printed surfaces, or a combination of these techniques.
  • the observation or according to the wavelength of the incident light, or according to the temperature.
  • customization of the latent image to form the final image are calculated to obtain the same shades of colors as those of the original image.
  • Laserizable materials which by carbonization under the effect of a laser beam, form the gray levels of the customized image are, by way of non-limiting examples, polycarbonates, certain polyvinyl chloride treated, acrylonitrile-butadiene treated styrenes, or treated polyethylene terephthalates.
  • the protective layer, and the layer of lasérisable material are heat-welded under pressure on the body of the identity document imprisoning the matrix of colored subpixels and unstained areas, as well as security reasons, between the protective layer, and the body of the document.
  • the invention also relates to a document comprising a secure laser image produced by the implementation of the method above.
  • This document comprises an assembly comprising a transparent protection layer, a printed latent image consisting of sub-colored pixels separated by non-printed surfaces, security patterns, a lasérisable layer, reflecting means and a laser beam which forms in the lasérisable layer the grayscale of a final custom image, the assembly being laminated on a support.
  • the printed surface of the subpixels does not cover the surface of the security patterns that are made in this unprinted surface, and the gray levels of the image
  • the unprinted surface in which the security patterns are made, reveals the underlying reflective surface, which is preferably white.
  • the security reasons are made in this unprinted surface, and are therefore not affected by the colored background of the sub-pixels.
  • holograms They can be printed with inks
  • the observation or according to the wavelength of the incident light, or according to the temperature.
  • the latent image is printed on the surface of the body of the document. The security reasons are made on this surface.
  • the latent image is printed on the protective layer and the security reasons that are made on this layer, able to be laminated on the body of the document.
  • the lasérisable layer is transparent. It is laminated on a reflective surface constituted by the body of the white color document, or laminated on the surface of the protective layer capable of being laminated on the body of the document.
  • the laserizable layer may be obtained by doping the protective layer, or the surface of the body of the document capable of being laminated.
  • the protective layer is formed hot during rolling, to give it the shape of a lens array enabling the laser to engrave on the latent image, several personalized color laser images distinct by the angle of inclination of the beam laser compared to the plane of the document.
  • FIG. 1 shows in plan the latent image and the security reasons according to the prior art.
  • FIG. 2 shows the non-printed surfaces of the sub-pixels according to the invention
  • Figure 3 shows in plan a latent image, and secure patterns according to the invention.
  • Figure 1 shows in plan a latent image and security reasons.
  • the latent image printed on the body of the document comprises the sub pixels (1), (2), (3) which are in the form of colored bands, separated by non-printed areas (6), (7), (8) ). These non
  • Subpixels can have other shapes, such as squares, rectangles, hexagons, etc.
  • the colors of subpixels can be a triplet of red, green, blue, yellow, magenta, cyan, or any other color optimized for better image rendering.
  • the security motif (4) represented here by an oval, is printed on the latent image. Its color is therefore darkened by the colors of the sub pixels, on which it is printed.
  • the security motive (4) is not clear.
  • the contrast between these fine lines and the sub-pixels is reduced because of the color of the sub-pixels.
  • Figure 2 shows the latent image according to the invention.
  • the sub-pixels (1), (2), (3) constituting the latent image, are interrupted to reserve unprinted surfaces (21) and (22) intended to receive the security reasons.
  • the unprinted surfaces (21) and (22) reveal the reflective white background of the body of the document, such as the unprinted areas between the sub pixels (6), (7), (8) of Figure 1.
  • FIG. 3 shows a latent image, including the security motifs according to the invention.
  • the security pattern (30) is realized.
  • the unprinted surface (21) is larger than the surface of the security pattern (30).
  • the security pattern (30) can be printed, or engraved by the laser in the laserizable layer, or reported as a stamp, or a holographic image.
  • the thin lines (31) have been printed or etched by the laser in the lasérisable layer, or a combination of the printing and engraving techniques. Unprinted surfaces (22) are wider than thin lines (31). Other secure reasons, such as barcodes, letters or miniaturized figures can be realized.
  • the grayscale of the custom image is not etched by the laser, in the unprinted surface intended to receive the security reasons.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

The present invention relates to a method for forming secure colour laser images. It is used in particular in identity images relating to identity documents. The security patterns are produced on non-printed surfaces of the latent image.

Description

PROCEDE DE FORMATION D'IMAGES LASER COULEUR SECURISEES ET DOCUMENT AINSI REALISE  METHOD FOR FORMING SECURED COLOR LASER IMAGES AND DOCUMENT THUS PRODUCED
DESCRIPTIF DESCRIPTION
Domaine d ' application de 1 ' inventio :  Field of application of the invention:
La présente invention concerne un procédé de formation d'images laser couleur sécurisée. Elle trouve des applications notamment dans les images d' identité relatives aux documents identitaires : cartes d'identité, cartes de crédit, cartes vital, passeports, permis de conduire, badges d'entrée sécurisés, etc.  The present invention relates to a method of forming secure color laser images. It finds applications particularly in identity images relating to identity documents: identity cards, credit cards, vital cards, passports, driving licenses, secure entry badges, etc.
Etat de l'art antérieur: State of the prior art:
Le brevet WO 2011/124774 Al, décrit un procédé de personnalisation d'images latentes encastrées, pour documents identitaires, comprenant une image latente, composée d'une matrice de pixels constitués de sous pixels colorés, et de sous pixels blancs, encastrée sous une couche de protection transparente. A l'aide d'un faisceau laser, des niveaux de gris sont créés sur les sous pixels en les recouvrant d'une surface non réfléchissante noire, au travers de la couche transparente de protection, créant ainsi les niveaux de gris de l'image laser couleur définitive. Ce traitement permet la personnalisation de l'image latente, constituée des sous pixels colorés.  Patent WO 2011/124774 A1, describes a method of personalization of embedded latent images, for identity documents, comprising a latent image, composed of a matrix of pixels consisting of colored sub-pixels, and of white sub-pixels, embedded in a transparent protective layer. Using a laser beam, gray levels are created on subpixels by covering them with a black non-reflecting surface, through the transparent protective layer, creating the gray levels of the image definitive color laser. This treatment allows the personalization of the latent image, consisting of colored sub-pixels.
L'image ainsi personnalisée, est observée par réflexion au travers de la couche transparente de  The image thus personalized, is observed by reflection through the transparent layer of
protection. L'image personnalisée doit être suffisamment réfléchissante, pour être observée en lumière ambiante, sans le recours à une source lumineuse additionnelle. protection. The personalized image must be sufficiently reflective, to be observed in ambient light, without the use of an additional light source.
La demande de brevet n° 11/00578, décrit un procédé de réalisation d'une image laser à haut rendement réflectif, comprenant une image latente constituée de sous pixels colorés, entourés de zones transparentes non colorées, recouverts d'une couche de protection transparente sensible au rayonnement laser, que l'on nommera par la suite, « couche lasérisable ». Un faisceau laser fait apparaître dans cette couche de protection lasérisable, des surfaces noires, non réfléchissantes, qui recouvrent plus ou moins les surfaces des sous pixels colorés, et des surfaces non colorées, afin de faire apparaître les niveaux de gris d'une image personnalisée. L'image personnalisée est vue par réflexion sur des sous couches réfléchissantes sous jacentes, notamment blanches, ou au travers de vernis, afin d'augmenter la réflectivité de l'image. La réflectivité de l'image est fondamentale, car elle doit permettre à l'œil d'intégrer par Patent Application No. 11/00578 discloses a method for producing a high-efficiency reflective laser image, comprising a latent image consisting of colored sub-pixels, surrounded by transparent non-colored areas, covered with a protective layer transparent sensitive to laser radiation, which will be called thereafter, "lasérisable layer". A laser beam causes black, non-reflective surfaces, which more or less cover the surfaces of colored sub-pixels, and unstained surfaces, to appear in this layer of laserisable protection, in order to reveal the gray levels of a personalized image. . The personalized image is seen by reflection on underlying reflective sub-layers, especially white, or through varnish, to increase the reflectivity of the image. The reflectivity of the image is fundamental because it must allow the eye to integrate through
composition additive les faisceaux lumineux aux couleurs des sous pixels, et des zones non colorées, émis par réflexion inverse de la lumière incidente. additive composition the light beams in the colors of the sub-pixels, and non-colored areas, emitted by inverse reflection of the incident light.
La demande de brevet n° 11/03919, déposée le 19 décembre 2011, décrit un procédé d'image laser couleur, dont la couche lasérisable est située sous l'image latente, comprenant des sous pixels colorés, et des surfaces non colorées, et une surface réfléchissante. Les niveaux de gris de l'image définitive, sont obtenus par un faisceau laser, qui au travers des sous pixels, fait apparaître les niveaux de gris dans la couche lasérisable, par la réflectivité de la lumière incidente, qui est modulée par ces niveaux de gris.  Patent Application No. 11/03919, filed December 19, 2011, discloses a color laser image process, whose laserizable layer is located under the latent image, comprising colored sub-pixels, and unstained surfaces, and a reflective surface. The gray levels of the final image, are obtained by a laser beam, which through the sub pixels, reveals the gray levels in the laserizable layer, by the reflectivity of the incident light, which is modulated by these levels of Grey.
Bien qu'intéressantes à certains égards, ces structures comprenant une image latente selon l'art antérieur, se prête mal à l'impression d'autres motifs sécuritaires.  Although interesting in some respects, these structures comprising a latent image according to the prior art, is poorly suited to printing other security reasons.
En effet, l'image latente imprimée de sous pixels colorés, séparés par des surfaces non colorées, forme un fond uniforme coloré, sur lequel, les motifs sécurisés imprimés sur ce fond, ne ressortent pas clairement à la vue du contrôleur, qui vérifie le document identitaire.  Indeed, the latent image printed with colored sub-pixels, separated by unstained surfaces, forms a uniform colored background, on which, the secure patterns printed on this background, do not stand out clearly in the view of the controller, who verifies the identity document.
Exposé de l'invention La présente invention, a pour but de remédier aux inconvénients de l'état de la technique, en rendant les motifs sécuritaires, parfaitement visibles au contrôleur qui vérifie le document identitaire. Presentation of the invention The present invention aims to overcome the disadvantages of the state of the art, making the reasons safe, perfectly visible to the controller who verifies the identity document.
Pour ce faire l'invention propose que l'impression des sous pixels, ne couvre pas la surface des motifs sécuritaires, qui sont alors réalisés sur une surface non colorée .  To do this, the invention proposes that the printing of the sub-pixels does not cover the surface of the security patterns, which are then made on an unstained surface.
De façon plus précise, l'invention a pour objet un procédé de formation d'images laser couleur sécurisée, à partir d'un assemblage comprenant une couche de  More specifically, the subject of the invention is a method for forming secure color laser images from an assembly comprising a layer of
protection transparente, une image latente imprimée constituée de sous pixels colorés séparés par des surfaces non imprimées, des motifs sécuritaires, une couche lasérisable, des moyens réfléchissants et un faisceau laser qui forme dans la couche lasérisable les niveaux de gris d'une image personnalisée définitive, l'ensemble étant laminé sur un support. La surface imprimée des sous pixels, ne couvre pas la surface des motifs sécuritaires qui sont réalisés dans cette surface non imprimée, et les niveaux de gris de l'image transparent protection, a printed latent image consisting of colored sub-pixels separated by non-printed surfaces, security patterns, a laserizable layer, reflective means and a laser beam which forms in the laserizable layer the gray levels of a final personalized image , the assembly being laminated on a support. The printed surface of the subpixels does not cover the surface of the security patterns that are made in this unprinted surface, and the gray levels of the image
personnalisée ne sont pas gravés par le laser, dans cette surface non imprimée. custom are not engraved by the laser, in this unprinted surface.
Les sous pixels colorés sont imprimés par offset, jet d'encre, ou toute autre technique connue de l'homme de l'art. Des zones non colorées, c'est-à-dire non imprimées séparent les sous pixels, et augmentent la réflectivité de l'image définitive. Les sous pixels colorés, et les zones non imprimées sont organisés en colonnes parallèles, ou en petites surfaces uniformément réparties. L'image latente peut être constituée de triplets ou de quadruplets colorés de sous pixels.  The colored sub-pixels are printed by offset, inkjet, or any other technique known to those skilled in the art. Unstained or non-printed areas separate the sub-pixels and increase the reflectivity of the final image. The colored sub-pixels, and the non-printed areas are organized in parallel columns, or in small uniformly distributed areas. The latent image may consist of triplets or quadruplets colored with sub-pixels.
La surface non imprimée, dans laquelle les motifs sécuritaires sont réalisés, laisse apparaître la surface réfléchissante, sous jacente, qui est de préférence blanche. Les motifs sécuritaires sont réalisés dans cette surface non imprimée, et ne sont donc pas affectés par le fond coloré des sous pixels. La réalisation des motifs sécuritaires, comprend les techniques d'impression, connues de l'homme de l'art, les techniques de gravure laser, qui noircit ponctuellement la couche lasérisable, les techniques de timbrage, d'holographie, d'éléments rapportés dans les surfaces non imprimées, ou une combinaison de ces techniques. The unprinted surface, in which the security patterns are made, reveals the underlying reflective surface, which is preferably white. The security reasons are realized in this surface not printed, and therefore are not affected by the colored background of the sub-pixels. The realization of security reasons, includes printing techniques known to those skilled in the art, laser engraving techniques, which punctually blacks the laserizable layer, stamping techniques, holography, elements reported in non-printed surfaces, or a combination of these techniques.
Les motifs sécuritaires sont connus de l'homme de l'art. Ils peuvent comprendre à titre d'exemple, des motifs particuliers, comme des chiffres, des codes barre, des lignes fines, des figures géométriques, des  The security reasons are known to those skilled in the art. They can include, for example, particular patterns, such as numbers, barcodes, thin lines, geometric figures,
hologrammes, etc.. holograms, etc.
Ils peuvent être imprimés avec des encres  They can be printed with inks
particulières qui changent selon l'inclinaison de particulars which change according to the inclination of
l'observation, ou selon la longueur d'onde de la lumière incidente, ou selon la température. the observation, or according to the wavelength of the incident light, or according to the temperature.
Afin de permettre une certaine tolérance  In order to allow some tolerance
d'alignement entre la surface non couverte par les sous pixels, et la surface couverte par les motifs of alignment between the surface not covered by the sub-pixels, and the area covered by the patterns
sécuritaires, la surface non couverte par les sous pixels, est plus large que celle des motifs sécuritaires. safe, the surface not covered by the sub-pixels, is wider than that of security reasons.
Les niveaux de gris conduisant à la  The gray levels leading to the
personnalisation de l'image latente pour former l'image définitive, sont calculés afin d'obtenir les mêmes nuances de couleurs que celles de l'image d'origine. customization of the latent image to form the final image, are calculated to obtain the same shades of colors as those of the original image.
Des matériaux lasérisables qui par carbonisation sous l'effet d'un faisceau laser, forment les niveaux de gris de l'image personnalisée, sont, à titre d'exemples non limitatifs, des polycarbonates , certains polychlorures de vinyle traités, des acrylonitrille-butadiène-styrènes traités, ou des poly-téréphtalates d' éthylène traités.  Laserizable materials which by carbonization under the effect of a laser beam, form the gray levels of the customized image are, by way of non-limiting examples, polycarbonates, certain polyvinyl chloride treated, acrylonitrile-butadiene treated styrenes, or treated polyethylene terephthalates.
Dans une seconde étape de fabrication, appelée « laminage » la couche de protection, et la couche de matériau lasérisable, sont soudées à chaud sous pression sur le corps du document identitaire emprisonnant la matrice de sous pixels colorés et les zones non colorées, ainsi que les motifs sécuritaires, entre la couche de protection, et le corps du document. In a second manufacturing step, called "rolling", the protective layer, and the layer of lasérisable material, are heat-welded under pressure on the body of the identity document imprisoning the matrix of colored subpixels and unstained areas, as well as security reasons, between the protective layer, and the body of the document.
L' invention concerne également un document comportant une image laser sécurisée réalisée par la mise en œuvre du procédé ci-dessus.  The invention also relates to a document comprising a secure laser image produced by the implementation of the method above.
Ce document comporte un assemblage comprenant une couche de protection transparente, une image latente imprimée constituée de sous pixels colorés séparés par des surfaces non imprimées, des motifs sécuritaires, une couche lasérisable, des moyens réfléchissants et un faisceau laser qui forme dans la couche lasérisable les niveaux de gris d'une image personnalisée définitive, l'ensemble étant laminé sur un support. La surface imprimée des sous pixels, ne couvre pas la surface des motifs sécuritaires qui sont réalisés dans cette surface non imprimée, et les niveaux de gris de l'image  This document comprises an assembly comprising a transparent protection layer, a printed latent image consisting of sub-colored pixels separated by non-printed surfaces, security patterns, a lasérisable layer, reflecting means and a laser beam which forms in the lasérisable layer the grayscale of a final custom image, the assembly being laminated on a support. The printed surface of the subpixels does not cover the surface of the security patterns that are made in this unprinted surface, and the gray levels of the image
personnalisée ne sont pas gravés par le laser, dans cette surface non imprimée. custom are not engraved by the laser, in this unprinted surface.
La surface non imprimée, dans laquelle les motifs sécuritaires sont réalisés, laisse apparaître la surface réfléchissante, sous jacente, qui est de préférence blanche. Les motifs sécuritaires sont réalisés dans cette surface non imprimée, et ne sont donc pas affectés par le fond coloré des sous pixels. La  The unprinted surface, in which the security patterns are made, reveals the underlying reflective surface, which is preferably white. The security reasons are made in this unprinted surface, and are therefore not affected by the colored background of the sub-pixels. The
réalisation des motifs sécuritaires, comprend les techniques d'impression, connues de l'homme de l'art, les techniques de gravure laser, qui noircit ponctuellement la couche lasérisable, les techniques de timbrage, d'holographie, ou une combinaison de ces techniques. realization of security reasons, includes printing techniques, known to those skilled in the art, laser engraving techniques, which punctually blacks the laserizable layer, stamping techniques, holography, or a combination of these techniques .
Les motifs sécuritaires sont connus de l'homme de l'art. Ils peuvent comprendre à titre d'exemple, des motifs particuliers, comme des chiffres, des codes barre, des lignes fines, des figures géométriques, des  The security reasons are known to those skilled in the art. They can include, for example, particular patterns, such as numbers, barcodes, thin lines, geometric figures,
hologrammes . Ils peuvent être imprimés avec des encres holograms. They can be printed with inks
particulières qui changent selon l'inclinaison de particulars which change according to the inclination of
l'observation, ou selon la longueur d'onde de la lumière incidente, ou selon la température. the observation, or according to the wavelength of the incident light, or according to the temperature.
Afin de permettre une certaine tolérance  In order to allow some tolerance
d'alignement entre la surface non couverte par les sous pixels, et la surface couverte par les motifs of alignment between the surface not covered by the sub-pixels, and the area covered by the patterns
sécuritaires, la surface non couverte par les sous pixels, est plus large que celle des motifs sécuritaires. safe, the surface not covered by the sub-pixels, is wider than that of security reasons.
Selon des modes de réalisation particuliers :According to particular embodiments:
-- L' image latente est imprimée sur la surface du corps du document. Les motifs sécuritaires sont réalisés sur cette surface. - The latent image is printed on the surface of the body of the document. The security reasons are made on this surface.
— L' image latente est imprimée sur la couche de protection ainsi que les motifs sécuritaires qui sont réalisés sur cette couche, apte à être laminée sur le corps du document.  - The latent image is printed on the protective layer and the security reasons that are made on this layer, able to be laminated on the body of the document.
-- la couche lasérisable est transparente. Elle est laminée sur une surface réfléchissante constituée par le corps du document de couleur blanche, ou laminée sur la surface de la couche de protection apte à être laminée sur le corps du document.  the lasérisable layer is transparent. It is laminated on a reflective surface constituted by the body of the white color document, or laminated on the surface of the protective layer capable of being laminated on the body of the document.
—la couche lasérisable, peut être obtenue par dopage de la couche de protection, ou de la surface du corps du document apte à être laminée.  The laserizable layer may be obtained by doping the protective layer, or the surface of the body of the document capable of being laminated.
—le corps du document est transparent. -The body of the document is transparent.
—la couche de protection est formée à chaud lors du laminage, pour lui donner la forme d'un réseau de lentilles permettant au laser de graver sur l'image latente, plusieurs images laser couleur personnalisées distinctes par l'angle d'inclinaison du faisceau laser pa rapport au plan du document. The protective layer is formed hot during rolling, to give it the shape of a lens array enabling the laser to engrave on the latent image, several personalized color laser images distinct by the angle of inclination of the beam laser compared to the plane of the document.
Présentation des figures L'invention apparaîtra mieux après la description qui suit, donnée à titre explicatif et nullement Presentation of figures The invention will appear better after the description which follows, given for explanatory purposes and in no way
limitatif. Cette description se réfère aux dessins annexés, sur lesquels : limiting. This description refers to the accompanying drawings, in which:
La figure 1 montre en plan l'image latente et les motifs sécuritaires selon l'art antérieur.  FIG. 1 shows in plan the latent image and the security reasons according to the prior art.
La figure 2 montre les surfaces non imprimées des sous pixels selon l'invention  FIG. 2 shows the non-printed surfaces of the sub-pixels according to the invention
La figure 3 montre en plan une image latente, et les motifs sécurisés selon l'invention.  Figure 3 shows in plan a latent image, and secure patterns according to the invention.
Description détaillée detailed description
La figure 1 montre en plan une image latente et les motifs sécuritaires. L'image latente imprimée sur le corps du document, comprend les sous pixels (1) , (2) , (3) qui ont la forme de bandes colorées, séparées par des zones non imprimées (6), (7), (8) . Ces zones non  Figure 1 shows in plan a latent image and security reasons. The latent image printed on the body of the document, comprises the sub pixels (1), (2), (3) which are in the form of colored bands, separated by non-printed areas (6), (7), (8) ). These non
imprimées, laissent apparaître la surface blanche printed, let appear the white surface
réfléchissante du corps du document, entre les sous pixels colorés. Les sous pixels peuvent avoir d'autres formes, comme des carrés, des rectangles, des hexagones, etc.. les couleurs des sous pixels, peuvent être un triplet de rouge, vert, bleu, de jaune, magenta, cyan, ou toute autre couleur optimisée pour un meilleur rendu d'image. reflective of the body of the document, between the colored sub-pixels. Subpixels can have other shapes, such as squares, rectangles, hexagons, etc. The colors of subpixels, can be a triplet of red, green, blue, yellow, magenta, cyan, or any other color optimized for better image rendering.
Le motif sécuritaire (4), représenté ici par un ovale, est imprimé sur l'image latente. Sa couleur, est donc assombrie par les couleurs des sous pixels, sur lesquels elle est imprimée. Le motif sécuritaire (4) ne ressort pas clairement.  The security motif (4), represented here by an oval, is printed on the latent image. Its color is therefore darkened by the colors of the sub pixels, on which it is printed. The security motive (4) is not clear.
Les lignes fines (5) constituant d'autres motifs sécuritaires, sont imprimés sur les sous pixels. Le contraste entre ces lignes fines et les sous pixels, est réduit, du fait de la couleur des sous pixels.  Fine lines (5) constituting other security reasons, are printed on subpixels. The contrast between these fine lines and the sub-pixels is reduced because of the color of the sub-pixels.
Ainsi, il n'est pas facile, pour un contrôleur de voir distinctement ces motifs sécuritaires, qu'il doit pourtant reconnaître. La figure 2, montre l'image latente, selon l'invention. Les sous pixels (1), (2), (3) constituant l'image latente, sont interrompus, pour réserver des surfaces non imprimées (21) et (22) destinées à recevoir les motifs sécuritaires. Les surfaces non imprimées (21) et (22) laissent apparaître le fond blanc réfléchissant du corps du document, comme les zones non imprimées entre les sous pixels (6), (7), (8), de la figure 1. Thus, it is not easy for a controller to clearly see these security reasons, which he must nevertheless recognize. Figure 2 shows the latent image according to the invention. The sub-pixels (1), (2), (3) constituting the latent image, are interrupted to reserve unprinted surfaces (21) and (22) intended to receive the security reasons. The unprinted surfaces (21) and (22) reveal the reflective white background of the body of the document, such as the unprinted areas between the sub pixels (6), (7), (8) of Figure 1.
La figure 3, montre une image latente, incluant les motifs sécuritaires selon l'invention. FIG. 3 shows a latent image, including the security motifs according to the invention.
Dans la surface (21) non imprimée de l'image latente, on réalise le motif sécuritaire (30) . La surface non imprimée (21) est plus grande que celle de la surface du motif sécuritaire (30) . L'alignement du motif  In the unprinted surface (21) of the latent image, the security pattern (30) is realized. The unprinted surface (21) is larger than the surface of the security pattern (30). Pattern alignment
sécuritaire (30) par rapport à la surface non imprimée (21) , et par rapport aux sous pixels (1) , (2) , (3) est ainsi facilité. Le motif sécuritaire (30), peut être imprimé, ou gravé par le laser dans la couche lasérisable, ou rapporté, comme un timbre, ou une image holographique. Sur les surfaces (22) non imprimées de l'image latente, les fines lignes (31), ont été imprimées ou gravées par le laser, dans la couche lasérisable, ou un combinaison des techniques d'impression et de gravure. Les surfaces non imprimées (22) sont plus larges que celle des fines lignes (31). D'autres motifs sécurisés, comme des codes barre, des lettres ou des chiffres miniaturisés peuvent être réalisés . safe (30) relative to the unprinted surface (21), and with respect to sub-pixels (1), (2), (3) is thus facilitated. The security pattern (30), can be printed, or engraved by the laser in the laserizable layer, or reported as a stamp, or a holographic image. On the unprinted surfaces (22) of the latent image, the thin lines (31) have been printed or etched by the laser in the lasérisable layer, or a combination of the printing and engraving techniques. Unprinted surfaces (22) are wider than thin lines (31). Other secure reasons, such as barcodes, letters or miniaturized figures can be realized.
Les niveaux de gris de l'image personnalisée ne sont pas gravés par le laser, dans la surface non imprimée destinée à recevoir les motifs sécuritaires.  The grayscale of the custom image is not etched by the laser, in the unprinted surface intended to receive the security reasons.

Claims

Revendications  claims
1) Procédé de formation d'images laser couleur sécurisées, à partir d'un assemblage comprenant une couche de protection transparente, une image latente imprimée constituée de sous pixels colorés séparés par des surfaces non imprimées, des motifs sécuritaires, une couche lasérisable, des moyens réfléchissants et un faisceau laser qui forme dans la couche lasérisable les niveaux de gris d'une image personnalisée définitive, l'ensemble étant laminé sur un support, caractérisé en ce que La surface imprimée des sous pixels, ne couvre pas la surface des motifs sécuritaires qui sont réalisés dans cette surface non imprimée, et en ce que les niveaux de gris de l'image personnalisée ne sont pas gravés par le laser, dans cette surface non imprimée.  A method of forming secure color laser images from an assembly comprising a transparent protective layer, a printed latent image consisting of colored sub-pixels separated by non-printed surfaces, security patterns, a laserizable layer, reflecting means and a laser beam which forms in the laserizable layer the gray levels of a definitive personalized image, the assembly being laminated on a support, characterized in that the printed surface of the sub-pixels does not cover the surface of the patterns safety that are made in this unprinted surface, and in that the gray levels of the custom image are not etched by the laser, in this unprinted surface.
2) Procédé de formation d'images laser couleur sécurisées selon la revendication 1 dans lequel les surfaces non imprimées (21) et (22) sont plus grandes que les surfaces des motifs sécurisés (30) , et (31) . The method of forming secure color laser images according to claim 1 wherein the unprinted surfaces (21) and (22) are larger than the surfaces of the secure patterns (30), and (31).
3) Procédé de formation d'images laser couleur sécurisées selon l'une quelconque des revendications 1 et 2, dans lequel les motifs sécuritaires sont imprimés dans les surfaces (21) , et (22) , ou gravés par le faisceau laser dans la couche lasérisable, ou sont des timbres, ou des hologrammes rapportés dans les surfaces non imprimées (21) et (22), ou une combinaison de ces techniques. 4) Procédé de formation d'images laser couleur sécurisées selon la revendication 3, dans lequel 3) A method of forming secure color laser images according to any one of claims 1 and 2, wherein the security patterns are printed in the surfaces (21), and (22), or etched by the laser beam in the layer lasérisable, or are patches, or holograms reported in the unprinted surfaces (21) and (22), or a combination of these techniques. The method of forming secure color laser images according to claim 3, wherein
l'impression s'effectue en utilisant des encres  printing is done using inks
particulières qui changent selon l'inclinaison de  particulars which change according to the inclination of
l'observation, selon la longueur d'onde de la lumière incidente, ou selon la température.  the observation, according to the wavelength of the incident light, or according to the temperature.
5) Document comportant des images laser couleur sécurisées, réalisé par la mise en œuvre du procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que ce document comporte une couche de protection transparente, une image latente imprimée de sous pixels colorés séparés par des surfaces non imprimées, des motifs sécuritaires (30 et 31) , une couche lasérisable, des moyens réfléchissants l'ensemble étant laminé sur un support.  5) Document comprising secure color laser images, produced by the implementation of the method according to any one of the preceding claims, characterized in that this document comprises a transparent protective layer, a latent image printed with colored sub-pixels separated by non-printed surfaces, security reasons (30 and 31), a lasérisable layer, reflecting means all being laminated on a support.
6) Document selon la revendication 5, dans lequel la couche de protection forme en surface un réseau de lentilles permettant au laser de graver sur l'image latente, plusieurs images laser couleur personnalisées distinctes. 6) Document according to claim 5, wherein the protective layer forms on the surface a lens array allowing the laser to burn on the latent image, several distinct personalized color laser images.
7) Document selon la revendication 5 dans lequel le corps du document est blanc 7) Document according to claim 5 wherein the body of the document is white
8) Document sécuritaire selon la revendication 5 dans lequel le corps du document est transparent. 8) security document according to claim 5 wherein the body of the document is transparent.
PCT/FR2013/050887 2012-04-24 2013-04-22 Method for forming secure colour laser images and document produced thereby WO2013160598A1 (en)

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FR1201192A FR2989627B1 (en) 2012-04-24 2012-04-24 METHOD FOR FORMING SECURE COLOR LASER IMAGES AND DOCUMENT THUS PRODUCED

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FR3027846B1 (en) * 2014-10-31 2019-04-19 Idemia France IDENTITY DOCUMENT COMPRISING A GUILLOCHIS AND AN ARRANGEMENT OF PIXELS

Citations (4)

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Publication number Priority date Publication date Assignee Title
FR1103919A (en) 1954-07-08 1955-11-08 Anciens Etablissements Andre C Order of revolver boxes for looms
US20090315316A1 (en) * 2006-07-25 2009-12-24 Ovd Kinegram Ag Method of generating a laser mark in a security document, and security document of this kind
WO2011000578A2 (en) 2009-06-30 2011-01-06 Nvb International Uk Ltd Measuring and reading the size of a parameter of a remotely positioned device
WO2011124774A1 (en) 2010-04-07 2011-10-13 Jean Pierre Lazzari Method for customizing latent embedded images and document thus produced

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1103919A (en) 1954-07-08 1955-11-08 Anciens Etablissements Andre C Order of revolver boxes for looms
US20090315316A1 (en) * 2006-07-25 2009-12-24 Ovd Kinegram Ag Method of generating a laser mark in a security document, and security document of this kind
WO2011000578A2 (en) 2009-06-30 2011-01-06 Nvb International Uk Ltd Measuring and reading the size of a parameter of a remotely positioned device
WO2011124774A1 (en) 2010-04-07 2011-10-13 Jean Pierre Lazzari Method for customizing latent embedded images and document thus produced

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EP2877347A1 (en) 2015-06-03
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FR2989627B1 (en) 2014-06-27

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