EP1230097A1 - Securement of documents or products by affixing an optically active component for verifying authenticity - Google Patents

Securement of documents or products by affixing an optically active component for verifying authenticity

Info

Publication number
EP1230097A1
EP1230097A1 EP00981428A EP00981428A EP1230097A1 EP 1230097 A1 EP1230097 A1 EP 1230097A1 EP 00981428 A EP00981428 A EP 00981428A EP 00981428 A EP00981428 A EP 00981428A EP 1230097 A1 EP1230097 A1 EP 1230097A1
Authority
EP
European Patent Office
Prior art keywords
component
orientation
zone
document
product
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.)
Granted
Application number
EP00981428A
Other languages
German (de)
French (fr)
Other versions
EP1230097B1 (en
Inventor
Hugues Souparis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Surys SA
Original Assignee
Hologram Industries SAS
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.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9552330&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1230097(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hologram Industries SAS filed Critical Hologram Industries SAS
Publication of EP1230097A1 publication Critical patent/EP1230097A1/en
Application granted granted Critical
Publication of EP1230097B1 publication Critical patent/EP1230097B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

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
    • B42D25/328—Diffraction gratings; Holograms
    • 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
    • B42D15/00—Printed matter of special format or style not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/355—Security threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/373—Metallic materials
    • 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
    • B42D25/425—Marking by deformation, e.g. embossing
    • 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
    • B42D25/45—Associating two or more layers
    • B42D25/465—Associating two or more layers using chemicals or adhesives
    • B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/916—Fraud or tamper detecting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24612—Composite web or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24851—Intermediate layer is discontinuous or differential
    • Y10T428/24868—Translucent outer layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24917—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including metal layer

Definitions

  • the present invention relates to the field of securing documents or products by affixing an optically active component for verifying authenticity.
  • the optical effects produced by the authentication means of the prior art generally consist of animations, the conformity of which is not always easy to verify. Furthermore, these animations occur in very specific lighting and observation conditions, and the unsophisticated user may encounter doubts in the verification consisting in checking whether the animation observed - sometimes with difficulty due to a poor positioning of the controlled object or poor lighting conditions - corresponds well to that prescribed for an authentic object.
  • the object of the present invention is to remedy this drawback by proposing an optical component allowing easy and unambiguous verification, while guaranteeing great difficulty in counterfeiting.
  • the invention relates in its most general sense to a component for the authentication of a document or a product, having a transparent plastic film embossed to present at least one diffracting network, the embossed surface being at least partially coated with a metallization layer, characterized in that the embossed film has a first metallized zone producing a rainbow effect in a first orientation of the component with respect to a lighting direction, said rainbow effect disappearing when the component is oriented perpendicular to the first orientation, and a second demetallized zone then coated with a layer of a dielectric material with high optical index producing a colored effect of a first color for a first orientation of the component and a second different color for the orientation perpendicular to the first orientation.
  • Each of the two areas represents recognizable information.
  • the first direction corresponds to an orientation in which the observer and the light source are in a plane perpendicular to the surface of the component.
  • the second zone is a zone presenting a deposit of a dielectric material of high index.
  • the invention also relates to a process for preparing a component for authenticating a document or a product, characterized in that it comprises a step of stamping a transparent film, a step of metallizing the film. stamped, a step of partial demetallization of the stamped film thus prepared and a step of depositing a dielectric material.
  • the method includes an additional coating step.
  • the demetallization step is carried out by masking the parts of the first zone with a varnish, then by passing the component thus prepared through a chemical bath.
  • Other methods of demetallization known in the state of the art are applicable.
  • FIG. 1 represents a view of the component according to its first orientation
  • FIG. 2 represents a view of the component according to its second orientation
  • - Figure 3 shows a view along AA of the component
  • Figure 4 shows an alternative embodiment, for producing a hot stamping film or a laminating film
  • Figures 5 and 6 show alternative embodiments of an optical component according to
  • Figures 1 and 2 show views respectively according to a first and a second orientation of the component. It has a first peripheral zone (1) having a metallic appearance, with an easily verifiable rainbow effect.
  • the central area (2) has a uniform color, for example blue.
  • Figure 3 shows a view along a section plane AA.
  • the component is formed by a polyester film (3) embossed by stamping, in a known manner for the realization holograms or different structures intended for the authentication of documents.
  • the stamped surface is coated by vacuum deposition of a metallization layer.
  • the metallization material is for example aluminum. This metallization layer is partially removed to leave only the peripheral zone (1), resulting in metallized parts (4, 5).
  • the part corresponding to the zone (2) of variable coloring is demetallized by a process consisting in masking the metallized surface, apart from the zone to be demetallized, with a protective varnish.
  • the component is then immersed in a bath destroying the metallization layer, in places not protected by the varnish.
  • a new vacuum deposition step is carried out, not with a metallic material, but with a transparent dielectric material with a high optical index, for example zinc sulfide (ZnS).
  • ZnS zinc sulfide
  • the assembly thus prepared is then coated with an adhesive film (7) deposited for example by coating.
  • the component thus produced can be affixed to a document or a product to be protected, by gluing for example.
  • It can also be sealed between an object or a document, and a sealing film protecting the object or the document, and making it possible to detect any attempt to remove this film.
  • FIG. 4 shows an alternative embodiment, for producing a hot stamping film or a laminating film.
  • the stamping varnish (3) is coated on a release layer (10) itself supported by a transparent film (11), for example a polyester film.
  • Figures 5 and 6 show alternative embodiments of an optical component according to the invention.
  • the zones (20, 30) represented in black can be formed either by the metallized zone, or by the demetallized zone and covered with dielectric.
  • the component can also have a micro lettering line (25).

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Laminated Bodies (AREA)
  • Credit Cards Or The Like (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Holo Graphy (AREA)
  • Printing Methods (AREA)
  • Physical Vapour Deposition (AREA)

Abstract

The invention concerns a component for authenticating a document or a product, comprising a transparent plastic film embossed to display at least a diffraction grating, the embossed surface being at least partly coated with a metallized layer. The invention is characterised in that the embossed film includes a first zone (4) producing a rainbow effect with respect to the illuminating direction, said rainbow effect vanishing when the component is oriented perpendicularly to the first orientation, and a second zone (6) coated with a dielectric material producing a coloured effect of a first colour for a first orientation of the component and a second different colour for the orientation perpendicular to the first orientation.

Description

SECURISATION DE DOCUMENTS OU DE PRODUITS PAR APPOSITION D'UN COMPOSANT OPTIQUEMENT ACTIF POUR LA "VERIFICATION DE L'AUTHENTICITE. SECURITY OF DOCUMENTS OR PRODUCTS BY APPOSITION OF AN OPTICALLY ACTIVE COMPONENT FOR "VERIFICATION OF AUTHENTICITY.
La présente invention concerne le domaine de la sécurisation de documents ou de produits par apposition d'un composant optiquement actif pour la vérification de 1 ' authenticité .The present invention relates to the field of securing documents or products by affixing an optically active component for verifying authenticity.
On connaît dans l'art antérieur divers moyens d ' authentif ication, mettant en œuvre des composants dif f ractants , notamment des composants holographiques. Ces composants sont difficiles à imiter, et permettent donc de rendre plus difficile le travail d'un éventuel contrefacteur.Various means of authentication are known in the prior art, using different components, in particular holographic components. These components are difficult to imitate, and therefore make the work of a possible counterfeiter more difficult.
Les effets optiques produits par les moyens d' authentif ication de l'art antérieur consistent généralement en des animations, dont il n'est pas toujours facile de vérifier la conformité. Par ailleurs, ces animations se produisent dans des conditions d'éclairage et d'observation très spécifiques, et l'utilisateur peu averti peut rencontrer des doutes dans la vérification consistant à contrôler si l'animation observée - parfois avec difficulté en raison d'un mauvais positionnement de l'objet contrôlé ou de mauvaises conditions d'éclairage - correspond bien à celle qui est prescrite pour un objet authentique.The optical effects produced by the authentication means of the prior art generally consist of animations, the conformity of which is not always easy to verify. Furthermore, these animations occur in very specific lighting and observation conditions, and the unsophisticated user may encounter doubts in the verification consisting in checking whether the animation observed - sometimes with difficulty due to a poor positioning of the controlled object or poor lighting conditions - corresponds well to that prescribed for an authentic object.
L'objet de la présente invention est de remédier à cet inconvénient en proposant un composant optique permettant une vérification facile et sans ambiguïté, toute en garantissant une grande difficulté de contrefaçon.The object of the present invention is to remedy this drawback by proposing an optical component allowing easy and unambiguous verification, while guaranteeing great difficulty in counterfeiting.
À cet effet, l'invention concerne dans son acception la plus générale un composant pour l' authentif ication d'un document ou d'un produit, présentant un film plastique transparent embossé pour présenter au moins un réseau diffractant, la surface e bossée étant au moins partiellement revêtue par une couche de métallisation, caractérisé en ce que le film embossé présente une première zone métallisée produisant un effet arc-en-ciel selon une première orientation du composant par rapport à une direction d'éclairage, ledit effet arc-en-ciel disparaissant lorsque le composant est orienté perpendiculairement à la première orientation, et une deuxième zone démetallisée puis enduite d'une couche d'un matériau diélectrique à haut indice optique produisant un effet coloré d'une première couleur pour une première orientation du composant et une deuxième couleur différente pour l'orientation perpendiculaire à la première orientation.To this end, the invention relates in its most general sense to a component for the authentication of a document or a product, having a transparent plastic film embossed to present at least one diffracting network, the embossed surface being at least partially coated with a metallization layer, characterized in that the embossed film has a first metallized zone producing a rainbow effect in a first orientation of the component with respect to a lighting direction, said rainbow effect disappearing when the component is oriented perpendicular to the first orientation, and a second demetallized zone then coated with a layer of a dielectric material with high optical index producing a colored effect of a first color for a first orientation of the component and a second different color for the orientation perpendicular to the first orientation.
Chacune des deux zones représente une information reconnaissable .Each of the two areas represents recognizable information.
Avantageusement, la première direction correspond à une orientation dans laquelle l'observateur et la source d'éclairage sont dans un plan perpendiculaire à la surface du composant .Advantageously, the first direction corresponds to an orientation in which the observer and the light source are in a plane perpendicular to the surface of the component.
La deuxième zone est une zone présentant un dépôt d'un matériau diélectrique de fort indice. L'invention concerne également un procédé de préparation d'un composant pour 1 ' authentification d'un document ou d'un produit caractérisé en ce qu'il comporte une étape d'estampage d'un film transparent, une étape de métallisation du film estampé, une étape de démétallisation partielle du film estampé ainsi préparé et une étape de dépôt d'un matériau diélectrique.The second zone is a zone presenting a deposit of a dielectric material of high index. The invention also relates to a process for preparing a component for authenticating a document or a product, characterized in that it comprises a step of stamping a transparent film, a step of metallizing the film. stamped, a step of partial demetallization of the stamped film thus prepared and a step of depositing a dielectric material.
De préférence, le procédé comporte une étape supplémentaire d'enduction.Preferably, the method includes an additional coating step.
Selon une variante particulière, l'étape de démétallisation est réalisée par masquage des parties de la première zone par un vernis, puis par passage du composant ainsi préparé dans un bain chimique. D'autres méthodes de démétallisation connues dans l'état de la technique sont applicables .According to a particular variant, the demetallization step is carried out by masking the parts of the first zone with a varnish, then by passing the component thus prepared through a chemical bath. Other methods of demetallization known in the state of the art are applicable.
L'invention sera mieux comprise à la lecture de la description qui suit, se rapportant à un exemple non limitatif de réalisation où : la figure 1 représente une vue du composant selon sa première orientation ; la figure 2 représente une vue du composant selon sa deuxième orientation ; - la figure 3 représente une vue selon AA du composant ;The invention will be better understood on reading the description which follows, relating to a nonlimiting exemplary embodiment where: FIG. 1 represents a view of the component according to its first orientation; FIG. 2 represents a view of the component according to its second orientation; - Figure 3 shows a view along AA of the component;
La f igure 4 représ ente une variante de réalisation , pour la réalisation d ' un film de marquage à chaud ou d ' un film de laminage ; - Les figures 5 et 6 représentent des variantes de réal i sation d ' un composant optique s elonFigure 4 shows an alternative embodiment, for producing a hot stamping film or a laminating film; - Figures 5 and 6 show alternative embodiments of an optical component according to
1 ' invention .1 invention.
Les figures 1 et 2 représentent des vues respectivement selon une première et une seconde orientation du composant. Il présente une première zone (1) périphérique présentant un aspect métallique, avec un effet d'arc-en-ciel facilement vérifiable. La zone centrale (2) présente une couleur uniforme, par exemple bleue.Figures 1 and 2 show views respectively according to a first and a second orientation of the component. It has a first peripheral zone (1) having a metallic appearance, with an easily verifiable rainbow effect. The central area (2) has a uniform color, for example blue.
Lorsque le composant est tourné d'un quart de tour comme représenté en figure 2, il prend un aspect très différent. La zone périphérique (1) perd son effet d'arc-en- ciel pour prendre un aspect terne, non diffractant. La zone centrale (2) change de couleur de façon très nette, pour virer au rouge par exemple. Ces effets sont bien marqués, et ne laissent aucun doute au contrôleur.When the component is turned a quarter turn as shown in Figure 2, it takes on a very different appearance. The peripheral zone (1) loses its rainbow effect to take on a dull, non-diffracting appearance. The central area (2) changes color very clearly, for example turning red. These effects are well marked, and leave no doubt to the controller.
La figure 3 représente une vue selon un plan de coupe AA. Le composant est formé par un film de polyester (3) embossé par estampage, de façon connue pour la réalisation d'hologrammes ou de structures diffringentes destinée à 1' authentification de documents. La surface estampée est revêtue par dépôt sous vide d'une couche de métallisation. Le matériau de métallisation est par exemple de l'aluminium. Cette couche de métallisation est partiellement supprimée pour ne laisser subsister que la zone périphérique (1) , se traduisant par des parties métallisées (4, 5) .Figure 3 shows a view along a section plane AA. The component is formed by a polyester film (3) embossed by stamping, in a known manner for the realization holograms or different structures intended for the authentication of documents. The stamped surface is coated by vacuum deposition of a metallization layer. The metallization material is for example aluminum. This metallization layer is partially removed to leave only the peripheral zone (1), resulting in metallized parts (4, 5).
La partie correspondant à la zone (2) de coloration variable est démétallisée par un procédé consistant à masquer la surface métallisée, hormis la zone à démétalliser , avec un vernis de protection. Le composant est ensuite plongé dans un bain détruisant la couche de métallisation, aux endroits non protégés par le vernis .The part corresponding to the zone (2) of variable coloring is demetallized by a process consisting in masking the metallized surface, apart from the zone to be demetallized, with a protective varnish. The component is then immersed in a bath destroying the metallization layer, in places not protected by the varnish.
Après décapage de ces endroits, on procède à une nouvelle étape de dépôt sous vide, non pas avec un matériau métallique, mais avec un matériau diélectrique transparent à haut indice optique, par exemple du sulfure de zinc (ZnS) .After pickling of these places, a new vacuum deposition step is carried out, not with a metallic material, but with a transparent dielectric material with a high optical index, for example zinc sulfide (ZnS).
L'ensemble ainsi préparé est ensuite revêtu d'un film adhésif (7) déposé par exemple par enduction. Le composant ainsi réalisé peut être apposé sur un document ou un produit à protéger, par collage par exemple.The assembly thus prepared is then coated with an adhesive film (7) deposited for example by coating. The component thus produced can be affixed to a document or a product to be protected, by gluing for example.
Il peut également être scellé entre un objet ou un document, et un film de scellage protégeant l'objet ou le document, et permettant de détecter toute tentative de retrait de ce film.It can also be sealed between an object or a document, and a sealing film protecting the object or the document, and making it possible to detect any attempt to remove this film.
La figure 4 représente une variante de réalisation, pour la réalisation d'un film de marquage à chaud ou d'un film de laminage. Le vernis d'estampage (3) est couché sur une couche de détachement (10) elle même supportée par un film transparent (11), par exemple un film de polyester.FIG. 4 shows an alternative embodiment, for producing a hot stamping film or a laminating film. The stamping varnish (3) is coated on a release layer (10) itself supported by a transparent film (11), for example a polyester film.
Les figures 5 et 6 représentent des variantes de réalisation d'un composant optique selon l'invention. Dans ces exemples de réalisation, les zones (20, 30) représentées en noir peuvent être constituées soit par la zone métallisée, soit par la zone démétallisée et recouverte de diélectrique.Figures 5 and 6 show alternative embodiments of an optical component according to the invention. In these exemplary embodiments, the zones (20, 30) represented in black can be formed either by the metallized zone, or by the demetallized zone and covered with dielectric.
Le composant peut présenter en outre une ligne de micro lettrage (25) . The component can also have a micro lettering line (25).

Claims

REVENDICATIONS
1 - Composant pour 1 ' authentification d'un document ou d'un produit, présentant un film plastique transparent embossé pour présenter au moins un réseau diffractant, la surface embossée étant au moins partiellement revêtue par une couche de métallisation, caractérisé en ce que le film embossé présente une première zone (4) produisant un effet arc-en-ciel selon une première orientation du composant par rapport à une direction d'éclairage, ledit effet arc-en-ciel disparaissant lorsque le composant est orienté perpendiculairement à la première orientation, et une deuxième zone (6) enduite d'un matériau diélectrique produisant un effet coloré d'une première couleur pour une première orientation du composant et une deuxième couleur différente pour l'orientation perpendiculaire à la première orientation.1 - Component for authenticating a document or a product, having a transparent plastic film embossed to present at least one diffracting network, the embossed surface being at least partially coated with a metallization layer, characterized in that the embossed film has a first zone (4) producing a rainbow effect according to a first orientation of the component with respect to a lighting direction, said rainbow effect disappearing when the component is oriented perpendicular to the first orientation , and a second zone (6) coated with a dielectric material producing a colored effect of a first color for a first orientation of the component and a second different color for the orientation perpendicular to the first orientation.
2 - Composant pour 1 'authentification d'un document ou d'un produit, selon la revendication 1 caractérisé en ce que la première zone (4) est une surface périphérique entourant la deuxième zone (6) , chacune des deux zones représentant une information reconnaissable .2 - Component for one authentication of a document or a product, according to claim 1 characterized in that the first zone (4) is a peripheral surface surrounding the second zone (6), each of the two zones representing information recognizable.
3 - Composant pour 1 ' authentification d'un document ou d'un produit, selon la revendication 1 ou 2 caractérisé en ce que la première direction correspond à une orientation dans laquelle l'observateur et la source d'éclairage sont dans un plan perpendiculaire à la surface du composant.3 - Component for one authentication of a document or a product, according to claim 1 or 2 characterized in that the first direction corresponds to an orientation in which the observer and the light source are in a perpendicular plane on the surface of the component.
4 - Composant pour 1 ' uthentification d'un document ou d'un produit, selon la revendication 1 caractérisé en ce que la première zone est une zone métallisée (4) . 5 - Composant pour 1 ' authentification d'un document ou d'un produit, selon la revendication 1 caractérisé en ce que la deuxième zone (6) est une zone présentant un dépôt d'un matériau diélectrique.4 - Component for 1 uthentification of a document or a product, according to claim 1 characterized in that the first zone is a metallized zone (4). 5 - Component for one authentication of a document or a product, according to claim 1 characterized in that the second zone (6) is a zone having a deposit of a dielectric material.
6 - Composant pour 1 ' authentification d'un document ou d'un produit, selon l'une au moins des revendications précédentes caractérisé en ce que la surface opposée au vernis d'estampage est recouverte par une couche de collage.6 - Component for one authentication of a document or a product, according to at least one of the preceding claims characterized in that the surface opposite to the stamping varnish is covered by a bonding layer.
7 - Composant pour 1 ' authentification d'un document ou d'un produit, selon l'une au moins des revendications précédentes caractérisé en ce que le vernis d'estampage est recouvert par une couche de détachement et par un film transparent .7 - Component for one authentication of a document or a product, according to at least one of the preceding claims characterized in that the stamping varnish is covered by a release layer and by a transparent film.
8 - Procédé de préparation d'un composant pour 1' authentification d'un document ou d'un produit caractérisé en ce qu'il comporte une étape d'estampage d'un film transparent, une étape de métallisation du film estampé, une étape de démétallisation partielle du film estampé ainsi préparé et une étape de dépôt d'un matériau diélectrique.8 - Process for preparing a component for authenticating a document or a product, characterized in that it comprises a step of stamping a transparent film, a step of metallization of the stamped film, a step partial demetallization of the stamped film thus prepared and a step of depositing a dielectric material.
9 - Procédé de préparation d'un composant pour l' authentification d'un document ou d'un produit selon la revendication 8 caractérisé en ce que le matériau diélectrique est un matériau diélectrique transparent à haut indice optique .9 - Process for preparing a component for the authentication of a document or a product according to claim 8 characterized in that the dielectric material is a transparent dielectric material with high optical index.
10 - Procédé de préparation d'un composant pour l' authentification d'un document ou d'un produit selon la revendication 6 ou 7 caractérisé en ce qu'il comporte une étape supplémentaire d'enduction ou un laminage d'adhésif. 11 - Procédé de préparation d'un composant pour 1' authentification d'un document ou d'un produit selon la revendication 8 ou 9 caractérisé en ce que l'étape de démétallisation est réalisée par masquage des parties de la première zone par un vernis, puis par passage du composant ainsi préparé dans un bain chimique.10 - Process for preparing a component for the authentication of a document or a product according to claim 6 or 7 characterized in that it comprises an additional step of coating or laminating of adhesive. 11 - Process for preparing a component for authentication of a document or a product according to claim 8 or 9 characterized in that the demetallization step is carried out by masking the parts of the first zone with a varnish , then by passing the component thus prepared through a chemical bath.
12 - Document de sécurité constitué par un substrat portant un composant optique comportant un film embossé caractérisé en ce que ledit composant optique caractérisé en ce que le film embossé présente une première zone (4) métallisée produisant un effet arc-en-ciel selon une première orientation du composant par rapport à une direction d'éclairage, ledit effet arc-en-ciel disparaissant lorsque le composant est orienté perpendiculairement à la première orientation, et une deuxième zone (6) transparente produisant un effet coloré d'une première couleur pour une première orientation du composant et une deuxième couleur différente pour l'orientation perpendiculaire à la première orientation. 12 - Security document consisting of a substrate carrying an optical component comprising an embossed film characterized in that said optical component characterized in that the embossed film has a first metallized zone (4) producing a rainbow effect according to a first orientation of the component relative to a lighting direction, said rainbow effect disappearing when the component is oriented perpendicular to the first orientation, and a second transparent zone (6) producing a colored effect of a first color for a first orientation of the component and a second different color for the orientation perpendicular to the first orientation.
EP00981428A 1999-11-19 2000-11-17 Securement of documents or products by affixing an optically active component for verifying authenticity Revoked EP1230097B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9914601 1999-11-19
FR9914601A FR2801246B1 (en) 1999-11-19 1999-11-19 SECURING DOCUMENTS OR PRODUCTS BY APPOSITION OF AN OPTICALLY ACTIVE COMPONENT FOR AUTHENTICITY VERIFICATION
PCT/FR2000/003201 WO2001036213A1 (en) 1999-11-19 2000-11-17 Securement of documents or products by affixing an optically active component for verifying authenticity

Publications (2)

Publication Number Publication Date
EP1230097A1 true EP1230097A1 (en) 2002-08-14
EP1230097B1 EP1230097B1 (en) 2003-07-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00981428A Revoked EP1230097B1 (en) 1999-11-19 2000-11-17 Securement of documents or products by affixing an optically active component for verifying authenticity

Country Status (19)

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US (1) US7875338B2 (en)
EP (1) EP1230097B1 (en)
JP (1) JP2003515182A (en)
KR (1) KR100533753B1 (en)
AR (1) AR042759A1 (en)
AT (1) ATE245544T1 (en)
AU (1) AU1868001A (en)
BR (1) BR0015504B1 (en)
CA (1) CA2392020A1 (en)
CO (1) CO5200830A1 (en)
DE (1) DE60004085T2 (en)
DK (1) DK1230097T3 (en)
ES (1) ES2203536T3 (en)
FR (1) FR2801246B1 (en)
MX (1) MXPA02005036A (en)
PL (1) PL355872A1 (en)
PT (1) PT1230097E (en)
RU (1) RU2236951C2 (en)
WO (1) WO2001036213A1 (en)

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DE60004085D1 (en) 2003-08-28
AR042759A1 (en) 2005-07-06
ATE245544T1 (en) 2003-08-15
RU2002116376A (en) 2004-02-20
FR2801246B1 (en) 2002-01-25
CO5200830A1 (en) 2002-09-27
JP2003515182A (en) 2003-04-22
DE60004085T2 (en) 2004-04-22
KR20020058017A (en) 2002-07-12
RU2236951C2 (en) 2004-09-27
AU1868001A (en) 2001-05-30
KR100533753B1 (en) 2005-12-06
EP1230097B1 (en) 2003-07-23
ES2203536T3 (en) 2004-04-16
MXPA02005036A (en) 2003-05-23
CA2392020A1 (en) 2001-05-25
DK1230097T3 (en) 2003-10-27
US7875338B2 (en) 2011-01-25
BR0015504B1 (en) 2009-01-13
US20020164456A1 (en) 2002-11-07
WO2001036213A1 (en) 2001-05-25
FR2801246A1 (en) 2001-05-25
BR0015504A (en) 2002-07-02
PL355872A1 (en) 2004-05-31
PT1230097E (en) 2003-12-31

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