EP1509404B1 - Corps multicouche comprenant au moins une couche presentant un materiau sensible au laser - Google Patents

Corps multicouche comprenant au moins une couche presentant un materiau sensible au laser Download PDF

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Publication number
EP1509404B1
EP1509404B1 EP02742735A EP02742735A EP1509404B1 EP 1509404 B1 EP1509404 B1 EP 1509404B1 EP 02742735 A EP02742735 A EP 02742735A EP 02742735 A EP02742735 A EP 02742735A EP 1509404 B1 EP1509404 B1 EP 1509404B1
Authority
EP
European Patent Office
Prior art keywords
laser
layer
multilayer body
sensitive
body according
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.)
Expired - Lifetime
Application number
EP02742735A
Other languages
German (de)
English (en)
Other versions
EP1509404A1 (fr
Inventor
Norbert Lutz
Gerhard Zinner
Matthias Schumacher
Ulrich Knaack
Dirk Fischer
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.)
Unica Technology AG
Leonhard Kurz Stiftung and Co KG
Original Assignee
Orga Systems GmbH
Leonhard Kurz GmbH and Co KG
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
Application filed by Orga Systems GmbH, Leonhard Kurz GmbH and Co KG filed Critical Orga Systems GmbH
Publication of EP1509404A1 publication Critical patent/EP1509404A1/fr
Application granted granted Critical
Publication of EP1509404B1 publication Critical patent/EP1509404B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B42D25/43—Marking by removal of material
    • B42D25/435—Marking by removal of material using electromagnetic radiation, e.g. laser
    • 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
    • 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
    • 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
    • B42D25/333—Watermarks
    • 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
    • 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
    • Y10T428/14—Layer or component removable to expose adhesive
    • Y10T428/1467—Coloring agent
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/253—Cellulosic [e.g., wood, paper, cork, rayon, etc.]
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/254—Polymeric or resinous material
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof

Definitions

  • the invention relates to a multilayer body consisting of a layer composite formed with a substrate with at least one layer comprising laser-sensitive material - referred to below as the laser-sensitive layer.
  • Such multilayer bodies are producible, e.g. using a transfer film, preferably hot stamping foil. It is known to apply such films on a plastic body to form an identity card or code card and make the individualization of the card via a laser treatment of the applied film. In laser treatment, laser-induced markings are produced on the laser-sensitive layer.
  • the publication EP 1 022 625 describes a transfer film that allows transfer of a hologram to a substrate.
  • the publication DE 10047450 A1 discloses a product having a security element, wherein transparent cover films and laser-sensitive ink layers are applied to, for example, an opaque core film or another security product for forming a security element in an alternating sequence.
  • the invention has for its object to provide a multi-layer body of the type mentioned, which makes a particularly accurate and diverse laser-induced marking possible.
  • the unwanted impairments occurring in the laser treatment should be reduced or eliminated in further layers or on the substrate of the multilayer body. It should also Substrates can be used on the paper material.
  • the laser-sensitive layer is associated with a background layer, which preferably reflects to a high degree or at least substantially not transparent to the laser radiation in the laser treatment of the laser-sensitive layer, ie when generating the laser-induced markers for this laser radiation or at least substantially not transparent is for the non-reflected portion of the incident laser radiation, it is achieved that in layers below the background layer no laser radiation or at least very little laser radiation is incident. Additionally or alternatively it can be provided that the background layer for the laser radiation is absorbent, so that at least a large part of the non-reflected radiation is absorbed in the background layer. The background layer thus forms a protective layer for underlying layers or the substrate.
  • the laser-sensitive layer itself already acts as a protective layer for the underlying layers and the substrate and a large part of the laser radiation acting on the laser treatment does not completely penetrate the laser-sensitive layer or does not reach the underlying layer and thus substantially destroy the laser Substrate is prevented.
  • the background layer brings significantly increased security, so that a particularly precisely limited and varied laser-marked marking is possible and also much greater freedom of design for the design of the layer composite can be obtained.
  • the background layer can also be used to obtain a color enhancement or lightening of the laser-induced marking formed in the overlying laser-sensitive layer.
  • special brightener substances can be introduced, which provide this effect.
  • the background layer under the laser-sensitive layer is arranged only in a partial area, advantageously only below the area in which the arrangement of the laser-indexed marking is provided, i. in the limited portion of the laser-sensitive layer in which the laser-induced marking is to be positioned.
  • a plurality of laser-sensitive layers arranged one above the other are provided in the layer composite.
  • a background layer is formed between the laser-sensitive layers.
  • a transfer or laminating film is applied to the substrate and in the film one or more layers are formed, wherein at least one layer is formed as the laser-sensitive layer.
  • the background layer can likewise be formed in the film, but alternatively also as a constituent of the substrate, for example as a surface layer of the substrate.
  • the multi-layer body is laminated from a plurality of overlay films and inlets. At least one of the overlay films may be formed as the laser-sensitive layer or comprise the laser-sensitive layer. It may be formed, for example, as a laminating film, the application of a hot stamping foil with the is provided laser-sensitive layer.
  • FIG. 1 it is an identity card with various markings and individualizations, as can be seen from the top view in Figure 2.
  • the card body - hereafter called card 8 - is made of paper material.
  • a multilayer film is applied on its surface, as can be seen in Figure 1, a multilayer film is applied.
  • the film has as layers a protective layer 3, a laser-sensitive material having layer 4, a background layer 5 and an adhesive layer 6, with which it is bonded to the surface of the card 8.
  • the film is arranged exclusively in a partial area of the card 8. It has a rectangular plan, as can be seen in Figure 2.
  • the film may be transferred via a transfer process, e.g. be applied by hot stamping a hot stamping foil on the card 8.
  • Such a transfer film is shown in section in FIG. 4.
  • the release layer 2 and the carrier film 1 shown above the protective layer 3 have been removed during the transfer process, which is usually carried out under elevated pressure and elevated temperature.
  • a laser-induced color image 10y is formed in the laser-sensitive layer.
  • This color image 10y can be made by laser-induced bleaching of the layer 4 laser-sensitive material. The process of laser-induced bleaching will be described later in detail.
  • the background layer 5 is formed under the entire region of the laser-sensitive layer 4. This background layer 5 is not transparent in the visible spectral range, so that the substrate 8 is covered in this area.
  • a marking 81 is formed on the surface of the substrate 8, which is recognizable exclusively in the area outside the color image 10 y or outside the background layer 5 when viewed from above (see Figure 2).
  • the marking 81 consists of a security pressure 81 d, which is formed in the embodiment in the manner of guilloches. Further, fluorescent threads 81f are disposed in the substrate and on its surface, which reflect upon exposure to UV light and appear as black threads in the visible spectral range. In addition, a watermark 81w is formed as a further identification in the substrate 8 and a security strip 81s.
  • the security strip 81s may have various identification and individualization elements, such as a diffraction and / or hologram structure, laser-induced markings, etc.
  • the security strip 81s is incorporated in the substrate 8 in the illustrated embodiment. It also passes through the substrate below the laser-induced color image 10 y and is not visible there due to the non-transparent background layer 5. The security strip 81f is visible only in the area in which it extends beyond the laser-induced image 10y.
  • the background layer 5 is formed only in the left half of the laser-induced color image 10y, so that only in this left part in which the background layer 5 is formed, the identification 81 is covered on the substrate 8 and is not visible. In the remaining area of the laser-induced image 10y, no background layer 5 is arranged, so that the surface of the substrate 8 and thus the marking 81 are visible in this area through the color-tinted transparent laser-induced color image.
  • This exemplary embodiment results in particularly increased protection against counterfeiting, since the laser-induced image 10y interacts in a particularly versatile manner with the other identification elements optically.
  • FIGS. 5 and 6 show transfer foils which have such a diffraction and / or hologram structure 5b in their layer structure.
  • the film in FIG. 5 corresponds in its construction to the film in FIG. 4, with only an additional resist layer 5c and a reflection layer 5r being additionally formed between the protective layer 3 and the laser-sensitive layer 4.
  • the diffraction and / or hologram structure 5b is formed in the region of the resist layer 5c, the reflection layer 5r and the laser-sensitive layer 4.
  • the additional lacquer layer 5c is designed as a laser-sensitive layer 4c.
  • the laser-sensitive layer 4c in addition to the laser-sensitive layer 4, there is the laser-sensitive layer 4c between which the reflection layer 5r extends.
  • the laser-sensitive layers 4 and 4c can each be formed from the same laser-sensitive material, but alternatively also from two different laser-sensitive materials.
  • the background layer 5 is formed underneath the laser-sensitive layer 4 on the side facing the substrate, which, as in connection with the exemplary embodiments illustrated in FIGS. 1 to 3, acts as a protective layer during laser treatment and as a brightener and color amplifier of the laser-induced image can act.
  • laminating films are shown, which correspond in their layer structure of the transfer sheets of Figures 5 to 6.
  • the overlay film 30 corresponds to the protective layer 3.
  • the remaining layers: the laser-sensitive layer 40, the background layer 50, the reflective layer 50r, and the adhesive layer 60 correspond to the laser-sensitive layer 4, the background layer 5, the reflective layer 5r, and the adhesive layer 6, respectively appropriate way is also at 8 and 9, a diffraction and / or hologram structure 50b corresponding to the diffraction and / or hologram structure 5b of FIGS. 5 and 6 is provided.
  • the multilayer body is formed as a body laminated from various overlay foils and inlets.
  • the overlay film 30 arranged on top has a plurality of layers on its underside which are applied by applying a transfer film to the overlay film. These layers are a lacquer layer 5c, a reflection layer 5r, a laser-sensitive layer 4, a background layer 5 and an adhesive layer 6. In the region of the lacquer layer 5c, the reflection layer 5r and the laser-sensitive layer 4 is a diffraction and / or hologram structure 5b formed.
  • this film dressing is an overlay film 32 consisting of material doped with carbon and / or carbon black.
  • This doped overlay film is a second laser-sensitive layer. In this layer takes place with appropriate laser action a carbonization, which can be obtained with appropriate adjustment of the laser conditions, a grayscale marker.
  • overlay film 32 inlets 90 are arranged, which may consist of paper material in the illustrated embodiment.
  • an overlay film 30 and thereon another overlay film 30 are arranged on the lower side of the lower inlet.
  • the laser irradiation is preferably carried out when applied to the substrate film or coating.
  • the laser irradiation can also be carried out before application, ie, directly by irradiation of the film alone.
  • Full-color image formation ie, the generation of a laser-induced mark as a full-color image, may be performed in embodiments in which the laser-sensitive material is formed from a mixture of a cyan pigment component, a magenta pigment component, and a yellow pigment component.
  • the formulation of the layers is given a hot stamping foil at the end of the description.
  • a blue or green or red color mark is produced in which this spot is irradiated with a certain laser wavelength, with which a certain pigment component is bleached.
  • this point is laser-treated in a second step, with a laser wavelength with which one of the not yet bleached at this point pigment components is bleached. If a blue color mark has been generated in the first step, the cyan pigment component is at this point and the magenta pigment component unbleached. To make the color cyan at this point, the magenta pigment component must be bleached in this second step. This is done with green laser light. This results in a cyan mark at this point.
  • magenta mark is to be obtained instead of this cyan mark
  • the blue mark produced in the first step must be treated with red laser light.
  • the cyan pigment is bleached at this point, so that the magenta pigment remains unbleached at this point. This results in the magenta marking at this point.
  • a green color marking produced in the first step which is formed from unbleached cyan pigment and yellow pigment remaining there, can produce a cyan-colored marking or a yellow-colored marking by treatment with blue laser light or red laser light.
  • a red color marking produced in the first step can be converted into a yellow or magenta marking in the second step by laser treatment in the second step with green laser light or blue laser light.
  • this point In order to obtain a transparent spot at the point treated in the first and second step, ie to obtain a white spot when the background layer 5 is white, in a third step this point must be treated with a laser beam whose wavelength is adjusted so that at this point after the second step unbleached pigment component is bleached, ie the yellow color marking must be bleached with blue laser light, the magenta green light mark and the cyan mark with red laser light.
  • Laser treatment can also be used to produce color markers or a full-color image in the colorant or the colorants in the laser-sensitive layer by color change.
  • the laser treatment can be carried out in a corresponding manner with successive process steps.
  • a colorant i. Coloring substances are pigments in question. These are usually insoluble and are usually inorganic substances.
  • the color change takes place in each case under specific laser conditions, which are then used in the laser treatment in the individual steps.
  • the bleaching and color conversion process described can also be used if the laser-sensitive material consists of only one or two colorant components. Also, other colorant components and other laser wavelength ranges can be used in the laser treatment.
  • the laser treatment of the transfer film to produce the color markings may also take place before the application of the film, and in particular, if the protective layer 3 is formed as a layer which is not or only partially transparent to laser radiation or a layer which is not transparent for laser radiation in the specific wavelength range or if an additional UV-absorbing protective layer is provided.
  • the laser treatment is then carried out before the application of the film in which the laser beam is directed to the back of the film, ie on the background layer 5 or the adhesive layer 6 and thus the laser-sensitive layer 4 is thus treated from the other side to therein To produce color markings in the same way.
  • the background layer 5 and the adhesive layer 6 are transparent or at least partially transparent or applied only in partial areas in these applications for the laser radiation in question.
  • the layers 2 to 6 can be produced according to the following recipes:
  • methyl ethyl ketone 61.0 parts Diaketonalkohol 9.0 parts Methyl methacrylate (Tg 122 ° C) 18.0 parts Polyethylene dispersion (23% in xylene) (softening point 140 ° C) 7.5 parts High molecular weight dispersing additive (40%, amine number 20) 0.5 parts Extender (aluminum silicate) 4.0 parts
  • Laser-sensitive layer 4 (first color coat layer):
  • Adhesive layer 6 is Adhesive layer 6

Claims (16)

  1. Corps multicouche se composant d'un composé de couches formé avec un substrat avec au moins une couche présentant un matériau sensible au laser, appelée ci-après couche sensible au laser,
    caractérisé en ce
    que le composé de couches présente au moins une couche de fond réfléchissante pour le rayon laser utilisé et/ou une couche de fond non transparente et/ou une couche de fond absorbante, laquelle est affectée à la couche sensible au laser au moins au nombre de une, la couche de fond étant disposée au moins dans une zone partielle sur le côté tourné vers le substrat de la couche sensible au laser et ayant pour effet qu'aucun rayon laser ou du moins un faible rayon laser n'arrive dans les couches situées sous la couche de fond, si bien qu'une destruction essentielle du substrat est évitée grâce au rayon laser utilisé.
  2. Corps multicouche selon la revendication 1,
    caractérisé en ce
    que plusieurs couches du composé de couches, de préférence la couche sensible au laser et la couche du fond qui lui est affectée et de préférence une ou plusieurs autres couches sensibles au laser de préférence avec une couche de fond affectée, sont disposées dans une feuille de couverture commune ou dans plusieurs feuilles de couverture.
  3. Corps multicouche selon l'une quelconque des revendications précédentes,
    caractérisé en ce
    que le substrat comporte au moins une entrée.
  4. Corps multicouche selon l'une quelconque des revendications précédentes,
    caractérisé en ce
    que le substrat et/ou au moins l'une des entrées sont réalisés à partir d'un matériau papier.
  5. Corps multicouche selon l'une quelconque des revendications précédentes,
    caractérisé en ce
    que le corps multicouche est réalisé comme un corps laminé composé de plusieurs feuilles, par exemple d'une ou de plusieurs feuilles de couverture et d'une ou de plusieurs entrées, de préférence de feuilles d'entrée.
  6. Corps multicouche selon la revendication 1,
    caractérisé en ce
    que le corps multicouche est conçu comme une feuille de transfert, de préférence une feuille d'estampage à chaud, ou comme une feuille à laminer.
  7. Corps multicouche selon la revendication 6,
    caractérisé en ce
    que la couche de fond est transparente pour la lumière dans une plage spectrale visible et/ou est transparente ou non pour le rayon laser respectant uniquement des conditions laser précises, en particulier uniquement des longueurs d'onde laser précises, et/ou pour l'angle d'incidence, de préférence est transparente ou non pour le rayon laser utilisé permettant de produire un marquage induit au laser dans la couche sensible au laser.
  8. Corps multicouche selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce
    que la couche de fond est disposée sous la couche sensible au laser exclusivement dans une zone partielle ou dans une zone complète de la couche sensible au laser, de préférence sous la zone dans laquelle il est prévu d'agencer un marquage induit au laser.
  9. Corps multicouche selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce
    que la couche de fond est immédiatement disposée de manière adjacente sur la couche sensible au laser qui lui est affectée.
  10. Corps multicouche selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce
    qu'au moins une couche intermédiaire est disposée entre la couche de fond et la couche sensible au laser qui lui est affectée.
  11. Corps multicouche selon l'une quelconque des revendications 1 à 10,
    caractérisé en ce
    que plusieurs couches sensibles au laser sont au moins partiellement superposées, et en ce qu'une couche de fond est disposée au moins par endroit entre deux couches sensibles au laser superposées.
  12. Corps multicouche selon l'une quelconque des revendications 1 à 11,
    caractérisé en ce
    qu'un marquage induit au laser peut être produit sous l'effet du rayon laser dans le matériau sensible au laser de la couche sensible au laser, de préférence par une décoloration induite au laser et/ou par un changement de couleur induit au laser et/ou par un noircissement induit au laser.
  13. Corps multicouche selon la revendication 12,
    caractérisé en ce
    que le matériau sensible au laser est réalisé sous la forme d'un mélange de divers composants sensibles au laser.
  14. Corps multicouche selon la revendication 13,
    caractérisé en ce
    qu'au moins deux, de préférence trois, composants sensibles au laser différents sont contenus dans le mélange et peuvent être modifiés à l'aide du laser respectivement dans les conditions laser spécifiques aux composants et peuvent être de préférence décolorés, sachant que, pour chacun des deux et/ou trois composants, il s'avère que, dans les conditions laser spécifiques au composant au moins au nombre de un, les autres composants et/ou les deux autres composants ne peuvent être modifiés ou ne peuvent être modifiés pour l'essentiel, mais peuvent de préférence être décolorés.
  15. Corps multicouche selon l'une quelconque des revendications 12 à 14,
    caractérisé en ce
    que le matériau sensible au laser présente un colorant de couleur cyan, de préférence un pigment de couleur cyan et/ou un colorant de couleur magenta, de préférence un pigment de couleur magenta et/ou un colorant de couleur jaune, de préférence un pigment de couleur jaune.
  16. Corps multicouche selon la revendication 15,
    caractérisé en ce
    que le pigment de couleur cyan se présente comme un colorant pouvant être décoloré avec une lumière laser rouge et/ou en ce que le pigment de couleur magenta se présente comme un colorant pouvant être décoloré avec une lumière laser verte et/ou en ce que le pigment de couleur jaune se présente comme un colorant pouvant être décoloré avec une lumière laser bleue.
EP02742735A 2002-05-08 2002-05-08 Corps multicouche comprenant au moins une couche presentant un materiau sensible au laser Expired - Lifetime EP1509404B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2002/001676 WO2003095225A1 (fr) 2002-05-08 2002-05-08 Corps multicouche comprenant au moins une couche presentant un materiau sensible au laser

Publications (2)

Publication Number Publication Date
EP1509404A1 EP1509404A1 (fr) 2005-03-02
EP1509404B1 true EP1509404B1 (fr) 2007-08-22

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EP02742735A Expired - Lifetime EP1509404B1 (fr) 2002-05-08 2002-05-08 Corps multicouche comprenant au moins une couche presentant un materiau sensible au laser

Country Status (9)

Country Link
US (1) US7220479B2 (fr)
EP (1) EP1509404B1 (fr)
JP (1) JP4411394B2 (fr)
CN (1) CN100406275C (fr)
AT (1) ATE370845T1 (fr)
AU (1) AU2002344932A1 (fr)
DE (2) DE50210783D1 (fr)
ES (1) ES2292773T3 (fr)
WO (1) WO2003095225A1 (fr)

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DE102004022080A1 (de) * 2004-05-05 2005-11-24 Giesecke & Devrient Gmbh Wertdokument mit visuell erkennbaren Kennzeichnungen
EP1652688A1 (fr) 2004-10-29 2006-05-03 Arjowiggins Security Dispositif de sécurité
DE102008012419A1 (de) † 2007-10-31 2009-05-07 Bundesdruckerei Gmbh Polymerschichtverbund für ein Sicherheits- und/oder Wertdokument, Verfahren zu dessen Herstellung sowie Sicherheits- und/oder Wertdokument
DE102007055356A1 (de) 2007-11-19 2009-05-20 Tesa Ag Laserbeschriftbare Folie
US8120811B2 (en) 2007-11-21 2012-02-21 Quad/Graphics, Inc. System and method for adding data to a printed publication
EP2945019B1 (fr) 2008-01-24 2020-10-07 Quad/Graphics, Inc. Impression utilisant un matériau de couleur variable
EP2109014A1 (fr) * 2008-04-08 2009-10-14 JDS Uniphase Corporation Dispositif contenant un OVD amélioré
DE102008034021A1 (de) * 2008-07-16 2010-01-21 Merck Patent Gmbh Verfahren zur Herstellung eines Sicherheits- und/oder Wertprodukts mit Zufallsmuster und korrelierter Identzeichenfolge
DE102009033762A1 (de) 2009-07-17 2011-01-27 Leonhard Kurz Stiftung & Co. Kg Verfahren zur Herstellung eines Mehrschichtkörpers sowie Mehrschichtkörper
US9662833B2 (en) 2012-06-04 2017-05-30 Sabic Global Technologies B.V. Marked thermoplastic compositions, methods of making and articles comprising the same, and uses thereof
CN104894919B (zh) * 2015-06-10 2016-11-02 北京大学 一种防伪材料及其制备方法和设备
CN107972332B (zh) * 2016-10-21 2020-11-27 康美包（苏州）有限公司 片状复合材料，尤其用于生产尺寸稳定的食品容器，具有第一色标和带有二维码的第二色标
JP7131976B2 (ja) 2018-06-20 2022-09-06 株式会社東芝 記録媒体及び記録装置
JP7178011B2 (ja) 2018-10-10 2022-11-25 東芝インフラシステムズ株式会社 記録媒体及び記録装置
JP7395398B2 (ja) 2020-03-24 2023-12-11 株式会社東芝 レーザ記録装置

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US4908285A (en) * 1987-05-18 1990-03-13 Canon Kabushiki Kaisha Hologram member
EP1022625B1 (fr) * 1999-01-19 2017-06-28 Dai Nippon Printing Co., Ltd. Film de transfert pour hologrammes
DE10047450A1 (de) * 2000-09-21 2002-04-11 Orga Kartensysteme Gmbh Erzeugnis mit einem Sicherheitselement

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DE10297780D2 (de) 2005-05-12
JP2005529003A (ja) 2005-09-29
ATE370845T1 (de) 2007-09-15
ES2292773T3 (es) 2008-03-16
US20050181498A1 (en) 2005-08-18
JP4411394B2 (ja) 2010-02-10
CN1649748A (zh) 2005-08-03
DE50210783D1 (de) 2007-10-04
WO2003095225A1 (fr) 2003-11-20
AU2002344932A8 (en) 2003-11-11
CN100406275C (zh) 2008-07-30
AU2002344932A1 (en) 2003-11-11
US7220479B2 (en) 2007-05-22
EP1509404A1 (fr) 2005-03-02

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