EP4049853B1 - Élément de sécurité doté d'une marque luminescente, support de données et procédé de fabrication - Google Patents

Élément de sécurité doté d'une marque luminescente, support de données et procédé de fabrication Download PDF

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Publication number
EP4049853B1
EP4049853B1 EP22020069.5A EP22020069A EP4049853B1 EP 4049853 B1 EP4049853 B1 EP 4049853B1 EP 22020069 A EP22020069 A EP 22020069A EP 4049853 B1 EP4049853 B1 EP 4049853B1
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EP
European Patent Office
Prior art keywords
region
security element
luminescent
area
printing ink
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.)
Active
Application number
EP22020069.5A
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German (de)
English (en)
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EP4049853A1 (fr
Inventor
Inge Altmann
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.)
Giesecke and Devrient Currency Technology GmbH
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Giesecke and Devrient Currency Technology GmbH
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Publication of EP4049853A1 publication Critical patent/EP4049853A1/fr
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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
    • B42D25/20—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
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/382—Special inks absorbing or reflecting infrared light
    • 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
    • B42D25/378—Special inks
    • B42D25/387—Special inks absorbing or reflecting ultraviolet light

Definitions

  • the invention relates to a security element for securing valuables, which has a feature area with a luminescent feature.
  • the invention also relates to a data carrier with such a security element, as well as a method for producing such a security element.
  • Data carriers such as valuables or identification documents, but also other valuables, such as branded items, are often provided with security elements for security purposes, which allow the authenticity of the data carrier to be checked and which at the same time serve as protection against unauthorized reproduction.
  • security elements for security purposes, which allow the authenticity of the data carrier to be checked and which at the same time serve as protection against unauthorized reproduction.
  • luminescent substances it is known to use luminescent substances to secure valuables or identification documents. The presence of the luminescent substances can then be checked, for example, using a UV lamp.
  • the document GB 2562262 A discloses a security element according to the preamble of claim 1.
  • the invention is based on the object of providing a security element of the type mentioned at the outset with an attractive appearance and high security against forgery.
  • a first non-luminescent printing ink with a visible first color is applied in a first area of the feature area.
  • At least two luminescent printing inks that are essentially transparent in the visible spectral range are applied to the printing ink of the first area, which when excited with UV or IR excitation light in at least luminesce in two different luminescent colors.
  • a second non-luminescent printing ink with a visible second color that differs from the visible first color is applied.
  • the second area is arranged within the first area and the luminescent printing inks of the second area are essentially transparent in the visible, the first and second areas appear to a viewer under normal viewing conditions in visible light as a uniform, same-colored surface area. Any noticeable residual differences in color or gloss of the first and second areas are effectively masked by the additionally provided third area. By covering the first and/or second area with a different visible printing ink, the third area distracts the viewer's attention from such differences.
  • the masking or deflection effect is based, on the one hand, on the intended color difference between the two non-luminescent printing inks, which is in any case greater than any possible color difference between the first and second areas caused unintentionally by the printing of the transparent luminescent printing inks.
  • the presence of the clearly visible different results third area with its geometric shape to focus the viewer's attention on this additional shape and thus to distract from any small differences between the first and second areas.
  • the third area can also accommodate a geometric shape of the first and/or second area, as shown in more detail below.
  • a significant advantage of the design according to the invention is the superimposition or superimposition of the luminescent and non-luminescent printing inks involved, which on the one hand enables simple and more reliable production and on the other hand ensures high color fidelity.
  • mixed printing inks consisting of body printing inks and luminescent printing inks are used for different areas of a luminescent feature
  • these mixed printing inks are relatively complex to produce because the purchased components have to be mixed and the originally well-defined properties of the printability of the colors change depending on the mixing ratio and a corresponding adjustment is made must become.
  • mixing changes the color tone of the original body printing ink, which can lead to difficulties in reproducing a desired color tone.
  • such mixed printing inks usually have different rheology and printing properties so that registered printing of several mixed printing colors is problematic.
  • the second non-luminescent printing ink is expediently applied to the first non-luminescent printing ink or one of the luminescent printing inks.
  • the first area can in particular be formed by a single contiguous area.
  • the first region consists of a plurality of spaced-apart subregions and in particular comprises a plurality of spaced-apart first pattern elements.
  • the first pattern elements are formed, for example, by triangles, rectangles, general polygons, circular or elliptical disks, line pieces, symbols and/or alphanumeric characters.
  • the first pattern elements can have the same or different shape and the same or different size.
  • the second area expediently contains at least two subareas, in each of which one of the printing inks luminescent in different luminescent colors is applied. It goes without saying that more than two subareas can also be provided for more than two different luminescent colors. Some or all sub-areas can overlap in some areas, like this that when excited, mixed colors of the luminescent colors can also be visible in addition to the luminescent colors of the printing inks.
  • the second region can in particular comprise a plurality of second pattern elements arranged at a distance.
  • the second pattern elements can in particular comprise several groups of pattern elements, in each of which one of the luminescent printing inks is applied.
  • the second pattern elements are formed, for example, by triangles, rectangles, general polygons, circular or elliptical disks, line pieces, symbols and/or alphanumeric characters.
  • the second pattern elements can have the same or different shapes and the same or different sizes.
  • both the first region comprises a number of spaced-apart first pattern elements
  • the second region also includes a number of spaced-apart second pattern elements.
  • the first and second pattern elements then advantageously have the same shape, for example they are each formed by circular disk-shaped pressure points.
  • the second pattern elements are advantageously arranged on a subset of the first pattern elements.
  • the second pattern elements can have the same size as the first pattern elements on which they are respectively arranged and can completely cover them. Since the second pattern elements are arranged only on a subset of the first pattern elements, it is nevertheless ensured that the second area only partially covers the first area.
  • the second pattern elements arranged on first pattern elements can advantageously also be designed to be smaller than the first pattern elements. This makes it possible to absorb register fluctuations, particularly when the dimensions of the pattern elements are small, and to ensure that the smaller second pattern elements lie completely within the area of the larger first pattern elements.
  • the third area can only cover the first or only the second area, or advantageously also cover both the first and the second area.
  • the third area can also extend outside the first and second areas in the feature area of the security element.
  • the third region is formed from a plurality of spaced-apart third pattern elements.
  • the third pattern elements can be formed, for example, by triangles, rectangles, general polygons, circular or elliptical disks, line pieces, symbols and/or alphanumeric characters.
  • the third pattern elements advantageously have a shape that deviates from the first and second pattern elements.
  • the third area can advantageously be designed in the form of a line structure, which preferably accommodates geometric shapes present elsewhere in the security element, for example the outline shape of a luminescent or non-luminescent partial area of the feature area.
  • the luminescent printing inks expediently contain luminescent substances, in particular luminescent pigments, which can be stimulated to luminescence by UV radiation or IR radiation.
  • Those arranged in the second area Luminescent printing inks preferably have at least one common excitation wavelength.
  • luminescence includes phosphorescence and fluorescence.
  • the colors in which the luminescent printing inks luminesce upon excitation advantageously differ from both the first and second visible colors of the non-luminescent printing inks.
  • the security element is advantageously a security thread, in particular a window security thread or a pendulum security thread, a tear thread, a security tape, a security strip, a patch or a label for application to a security paper, document of value or the like.
  • the security element can contain a carrier film or be present without a carrier film.
  • the invention also contains a data carrier with a security element of the type described.
  • the data carrier can in particular be a document of value, such as a banknote, in particular a paper banknote, a polymer banknote or a film composite banknote, a share, a bond, a certificate, a voucher , a check, a seal, a tax stamp, a high-quality admission ticket, but also an identification card, such as a credit card, a bank card, a cash payment card, an authorization card, an ID card or a passport personalization page.
  • a banknote in particular a paper banknote, a polymer banknote or a film composite banknote, a share, a bond, a certificate, a voucher , a check, a seal, a tax stamp, a high-quality admission ticket
  • an identification card such as a credit card, a bank card, a cash payment card, an authorization card, an ID card or a passport personalization page.
  • the security element can represent a separate security element, for example a film element, which is arranged at a desired location on a data carrier.
  • the security element can also form an integral part of the data carrier itself and for example, be formed by an imprint that is applied to a substrate of the data carrier.
  • the first non-luminescent printing ink is first applied to form the first region, then the luminescent printing inks, which are essentially transparent in the visible spectral range, are applied to the printing ink of the first region to form the second region, and finally the second non-luminescent ink is applied to form the third area.
  • FIG. 1 shows a schematic representation of a banknote 10, which can include a substrate made of paper, plastic or a hybrid substrate made of a combination of paper and plastic layers.
  • the banknote 10 is provided with three security elements 12, 16 and 18 according to exemplary embodiments of the invention, the first security element representing a security thread 12 which emerges from certain window areas 14 on the surface of the banknote 10, while in the intermediate areas inside the banknote 10 Banknote 10 is embedded.
  • the second security element 16 is formed by a portion of the banknote 10, in which the banknote paper is provided with an imprint that forms the special feature area described in more detail below.
  • the third security element 18 is formed by a portion of the banknote 10, in which the banknote paper is provided with a motif-shaped imprint, namely an imprint with a recess in the form of the value number "10" of the banknote. This print also forms a special feature area described below.
  • the invention does not apply to the in Fig. 1 security elements shown by way of example, but in particular also includes glued-on transfer elements of any shape with or without their own carrier film.
  • the security element can also be designed in the form of a cover film which is arranged over a window area or a continuous opening of the banknote.
  • the invention can be used by everyone Types of security elements are used, for example in labels on goods and packaging or in securing documents, ID cards, passports, credit cards, health cards and the like.
  • Figure 2 shows a security element 20 according to a first exemplary embodiment of the invention, where Fig. 2(a) schematically represents the structure of the security element in cross section and the Figures 2(b) and (c) illustrate the associated appearance of the feature area of the security element in incident light when viewed in visible light or UV light.
  • the security element 20 contains a substrate 22, which in particular represents the substrate of the document of value onto which the security element 20 is applied, for example printed.
  • the substrate 22 can be a substrate film of a separate security element, which can be applied, for example glued, to a desired target substrate after its production.
  • the security element 20 can also have been produced on a transfer carrier substrate, transferred to the target substrate and the transfer carrier substrate then peeled off.
  • the security element 20 has a feature area 24 in which a non-luminescent printing ink 40 with a visible first color, for example red, is applied in a first area 30.
  • the first area 30 is in the form of a rounded square over its entire surface Corners are formed, but in principle it can have any shape.
  • two luminescent printing inks 42A, 42B which are essentially transparent in the visible spectral range, are applied to the printing ink 40 of the first area and, when excited with UV or IR excitation light, luminesce in two different luminescent colors, for example orange and green.
  • the second area is 32 arranged completely within the first area 30 and partially, but not completely, covers it.
  • the two differently luminescent printing inks 42A, 42B are each applied to the printing ink 40 of the first area in a partial area 32A and 32B of the second area, the partial areas advantageously in the form of characters or patterns, such as the coat of arms motif 32A and the star motif 32B ( Fig. 2(b) and (c) ) are formed.
  • a second non-luminescent printing ink 44 is applied, which has a second color that differs from the visible first color.
  • the second color of the printing ink 44 can be, for example, dark red, brown or black, but it can also be a lighter color than the first color.
  • the third area 34 in the exemplary embodiment is designed as a line structure in the shape of a star and thus takes up the outline shape of the star motif of the partial area 32B.
  • the second non-luminescent printing ink 44 can be applied in an area on one of the luminescent printing inks 42A, 42B (partial area 34A), it can be applied in an area on the first non-luminescent printing ink (partial area 34B) and / or it can be in one Edge area of one of the luminescent printing inks can be applied (partial area 34C) and thereby camouflage the transition between non-luminescent printing ink and luminescent printing ink. All three possibilities are implemented at different locations of the security element 20, as indicated by the reference numbers 34A to 34C in Fig. 2(b) illustrated.
  • the feature area 24 of the security element 20 is formed by the entirety of the three areas mentioned. Since the second and third areas in the exemplary embodiment Fig. 2 each lie within the first area, the feature area 24 in this exemplary embodiment is congruent with the first area 30.
  • the appearance of the security element 20 when viewed in visible light without excitation is in Fig. 2(b) shown.
  • the feature area 24 shows in the first area 30 a homogeneous, monochrome red area on which the star-shaped line structure 34 is visible in a darker color.
  • the second area 32 with the coat of arms and the star motif, which is arranged within the first area, does not appear in visible light due to the transparency of the printing inks 42A, 42B, so that the position of these motif elements in Fig. 2(b) is only indicated by dashed lines.
  • the feature area 22 of the security element When viewed under UV light, the feature area 22 of the security element shows the in Fig. 2(c) appearance shown.
  • the luminescent substances of the luminescent printing inks of the subareas 32A, 32B are excited by the UV radiation and glow in the luminescent colors orange (subarea 32A) or green (subarea 32B). Both luminescence colors are different from the visible red color of the surface 22, so that the luminescence areas 30, 32 are also present in most cases Combination lighting of visible and UV light appears in clear contrast to the red background.
  • the effect of the line structure of the third area 34 is, in particular, to mask any still perceptible differences in color or gloss between the first and second areas 30, 32, which can occur in some cases despite the visual transparency of the luminescent printing inks.
  • by recording the geometric shape of the partial area 32B through the line structure 34 even such residual differences in color or shine, if they should be noticed by a viewer, appear targeted and therefore do not act as a disturbance, but rather as a further subtle authenticity feature.
  • the third area 34 is formed with a non-luminescent printing ink, so that its line structure appears as a darker structure when viewed under UV light in the partial areas 32A, 32B, since part of the emission of the luminescent substances is absorbed there.
  • Fig. 2(c) For clarity, this effect is illustrated with an exaggerated line thickness of the line structure 34 and the case of complete absorption of the luminescence emission.
  • the non-luminescent color of the third region 34 can also be partially transparent to the emitted luminescence radiation, so that only a certain weakening of the luminescence emission can be observed there.
  • Figure 3 shows a security element 50 according to another embodiment of the invention, where Fig. 3(a) schematically represents the structure of the security element in cross section and the Figures 3(b) and (c) illustrate the associated appearance of the feature area of the security element in incident light when viewed in visible light or UV light.
  • a first area 30 is formed by a plurality of spaced printing points 54 arranged in a grid-like manner, all of which are applied with a non-luminescent printing ink 40 with a visible first color, for example red.
  • the first area 30 consists only of the printing points 54 and does not contain the unprinted spaces between the spaced printing points.
  • the print dots 54 produce a regular grid of red print dots as in Fig. 3(b) illustrated.
  • the second area 32 is formed by two sub-areas 32A, 32B, the first sub-area 32A containing a plurality of printing points 62 in which the visible printing ink 40 is overprinted with a transparent, orange luminescent printing ink 42A, and the second sub-area 32B a plurality of Contains printing points 64, in which the visible printing ink 40 is overprinted with a transparent, green luminescent printing ink 42B.
  • the pressure points 62 of the first portion 32A are arranged in the form of the number "1”
  • the pressure points 64 of the second portion 32B are arranged in the form of the number "0".
  • the second area 32 lies completely within the first area 30.
  • the feature area therefore contains three types of printing points 54, namely non-luminescent first pressure points 60, orange luminescent second pressure points 62 and green luminescent ones third pressure points 64. In visible light, all pressure points 54 appeared uniformly red in color.
  • the print points 62 of the partial area 32A glow with orange luminescence and the print points 64 of the partial area 32B glow with green luminescence, while the remaining print points 60 outside the second area 32 do not luminesce and are in Fig. 3(c) are therefore only shown in dashed lines.
  • a luminescence motif in the form of the numbers "1" (partial area 32A) and "0" (partial area 32B) is surprisingly created in the UV light within the initially identically colored set of print dots, which can represent the denomination of a banknote, for example.
  • the red pressure points 60 also appear and form a non-luminescent red environment for the orange-green luminescence of the pressure points 62, 64.
  • the third area 34 is in the exemplary embodiment Fig. 3 formed by short line pieces which are applied with a black printing ink 44 to the printing inks 42A and 42B (for the luminescent printing dots 62 and 64) or to the printing ink 40 (for the non-luminescent printing dots 60).
  • the line pieces of the third area 34 lead to a masking of any differences in color or gloss between the luminescent printing points 62, 64 and the non-luminescent printing points 60. Such differences are not eliminated by the line pieces 34, but their perceptibility is reduced However, visible light is significantly reduced because the color difference between the Line pieces 34 and the pressure points 60, 62, 64 are in any case greater than the color difference between the pressure points themselves.
  • the line pieces 34 in the exemplary embodiment produce a narrow area of reduced luminescence emission within the printing points 62, 64, as also shown in Fig. 3(c) shown.
  • Figure 4 shows a modification of the exemplary embodiment Fig. 3 , in which the printing ink 44 of the black line pieces of the third area 34 is not only applied to the printing points 60, 62, 64, but is also printed directly onto the substrate 22 in the spaces between the printing points 54.
  • the areas of the printing dots 62, 64 printed with the luminescent printing inks 42A, 42B are slightly smaller in this embodiment than the underlying non-luminescent areas of the printing ink 40, so that any registration fluctuations between the luminescent and non-luminescent printing inks are absorbed and it is ensured that the luminescent printing inks 42A, 42B always lie completely within the area of the non-luminescent printing ink 40.
  • Such a design can be used advantageously, for example, with very small printing dots, in which the dimensions of the printing dots are comparable to the size of the registration fluctuations of different printing steps.
  • Different diameters of the pattern elements can also advantageously serve to additionally camouflage the luminescent feature.
  • the irregular arrangement of the pressure points 60 must be specifically selected and adjusted in order to ensure that the regularly arranged pressure points 62, 64 always lie within a pressure point 60.
  • the print points 62, 64 of the second area can represent desired information, for example an alphanumeric character string.
  • the luminescent pressure points 62, 64 are, as in Fig. 3 , arranged exclusively at grid locations of a square grid, have a regular arrangement.
  • the first and second areas can of course also be formed by other pattern elements of any shape in all the designs described, as already described in more detail above.
  • Figure 5 shows schematically a further security element 70 according to the invention with a complex design of the first area 30, where Fig. 5(a) schematically represents the structure of the security element in cross section and the Figures 5(b) and (c) illustrate the associated appearance of the feature area of the security element in incident light when viewed in visible light or UV light.
  • a first area 30 is formed by several spaced-apart partial areas (four partial areas are shown in FIG. 7), in which a non-luminescent printing ink 40 with a visible first color, for example red, is applied.
  • a second area 32 is formed by two or more partial areas 32A, 32B, in each of which a visible transparent printing ink 42A, 42B is applied, which after UV excitation turns into different luminescent colors, for example orange (printing ink 42A) and green (printing ink 42B). , luminesce.
  • two partial areas 32A, 32B are shown, which are arranged completely within two partial areas of the first area 30.
  • a third area 34 is formed by a non-luminescent dark, for example dark red, print which overlaps two spaced partial areas of the first area 30. Overlapped in the exemplary embodiment the third area 34 does not have any of the sub-areas of the second area, but it is clear from what has been said that this would also be possible.
  • the four partial areas of the first area 30 are all visible with red color; the middle two of these partial areas are connected by the brown print of the third area 34, as in Fig. 3(b) shown.
  • the portion 32A When viewed in UV light, the portion 32A lights up with orange luminescence and the portion 32B lights up with green luminescence, as shown in Fig. 3(c) illustrated.
  • the in Fig. 3(c) Dashed surface areas of the first and third sub-areas appear in red and brown, respectively.

Claims (14)

  1. Élément de sécurité (12, 16, 18, 20) pour la protection d'objets de valeur, dans lequel l'élément de sécurité présente une zone à caractéristique (24) présentant une caractéristique de luminescence, dans lequel, dans la zone à caractéristiques
    - dans une première zone (30), est appliquée une première encre d'impression non luminescente (40) présentant une première couleur visible,
    - dans une deuxième zone (32), qui est agencée à l'intérieur de la première zone, sont appliquées au moins deux encres d'impression luminescentes (42A, 42B) qui, lorsqu'elles sont excitées par une lumière d'excitation UV ou IR, deviennent luminescentes dans au moins deux couleurs luminescentes différentes, et
    - dans une troisième zone (34) qui recouvre partiellement la première et/ou la deuxième zone, est appliquée une deuxième encre d'impression non luminescente (44) présentant une deuxième couleur visible qui est différente de la première couleur visible,
    caractérisé en ce que la deuxième zone recouvre partiellement la première zone, et en ce que les deux encres d'impression de la deuxième zone sont appliquées sur l'encre d'impression de la première zone, et en ce que les deux encres d'impression de la deuxième zone sont sensiblement transparentes dans le domaine spectral visible.
  2. Élément de sécurité selon la revendication 1, caractérisé en ce que la première zone est formée par une zone contiguë unique.
  3. Élément de sécurité selon la revendication 1, caractérisé en ce que la première zone est constituée de plusieurs zones partielles espacées et comprend notamment une pluralité de premiers éléments de motif agencés de manière espacée.
  4. Élément de sécurité selon au moins l'une des revendications 1 à 3, caractérisé en ce que la deuxième zone comprend une pluralité de deuxièmes éléments de motif agencés à distance les uns des autres.
  5. Élément de sécurité selon la revendication 4, caractérisé en ce que la première zone comprend une pluralité de premiers éléments de motif agencés de manière espacée, et les deuxièmes éléments de motif sont agencés sur un sous-ensemble des premiers éléments de motif.
  6. Élément de sécurité selon la revendication 5, caractérisé en ce que les deuxièmes éléments de motif agencés sur les premiers éléments de motif sont réalisés de manière à être plus petits que les premiers éléments de motif.
  7. Élément de sécurité selon la revendication 5 ou 6, caractérisé en ce que les premiers et deuxièmes éléments de motif présentent la même forme.
  8. Élément de sécurité selon au moins l'une des revendications 1 à 7, caractérisé en ce que la troisième zone s'étend dans la zone à caractéristiques ainsi qu'à l'extérieur des première et deuxième zones.
  9. Élément de sécurité selon au moins l'une des revendications 1 à 8, caractérisé en ce que la troisième zone est formée d'une pluralité de troisièmes éléments de motif agencés de manière espacée.
  10. Élément de sécurité selon les revendications 5 et 9, caractérisé en ce que des troisièmes éléments de motif présentent une forme différente des premiers et deuxièmes éléments de motif.
  11. Élément de sécurité selon au moins l'une des revendications 1 à 8, caractérisé en ce que, dans les parties dans lesquelles la troisième zone recouvre la première et/ou la deuxième zone, la deuxième encre d'impression non luminescente est appliquée sur la première encre d'impression non luminescente ou sur l'une des encres d'impression luminescentes.
  12. Support de données comportant un élément de sécurité selon l'une des revendications 1 à 11, dans lequel le support de données est notamment un document de valeur ou une carte d'identité.
  13. Procédé de fabrication d'un élément de sécurité selon l'une des revendications 1 à 11, dans lequel
    - dans une première zone d'une zone à caractéristiques, est appliquée une première encre d'impression non luminescente présentant une première couleur visible,
    - dans une deuxième zone, qui est agencée à l'intérieur de la première zone et la recouvre partiellement, au moins deux encres d'impression luminescentes, principalement transparentes dans le domaine spectral visible, sont appliquées sur l'encre d'impression de la première zone, qui, lorsqu'elles sont excitées par une lumière d'excitation UV ou IR, deviennent luminescentes dans au moins deux couleurs luminescentes différentes, et
    - dans une troisième zone qui recouvre partiellement la première et/ou la deuxième zone, est appliquée une deuxième encre d'impression non luminescente présentant une deuxième couleur visible qui est différente de la première couleur visible.
  14. Procédé selon la revendication 13, caractérisé en ce que la première encre d'impression non luminescente est d'abord appliquée pour former la première zone, puis les encres d'impression luminescentes, principalement transparentes dans le domaine spectral visible, sont appliquées sur l'encre d'impression de la première zone pour former la deuxième zone, et enfin la deuxième encre d'impression non luminescente est appliquée pour former la troisième zone.
EP22020069.5A 2021-02-25 2022-02-18 Élément de sécurité doté d'une marque luminescente, support de données et procédé de fabrication Active EP4049853B1 (fr)

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WO2004076192A1 (fr) 2003-02-27 2004-09-10 Inksure Inc. Procede de marquage d'articles
GB2452078B (en) 2007-08-23 2009-12-23 Rue De Int Ltd Security devices for security substrates
JP2013129095A (ja) 2011-12-21 2013-07-04 Kobayashi Create Co Ltd 隠匿情報入り帳票用紙
DE102012110630A1 (de) 2012-11-06 2014-05-08 Ovd Kinegram Ag Mehrschichtkörper sowie Verfahren zur Herstellung eines Sicherheitselements
GB2562262B (en) * 2017-05-10 2019-12-11 De La Rue Int Ltd Security devices and methods for their manufacture
DE102017009477A1 (de) 2017-10-12 2019-04-18 Giesecke+Devrient Currency Technology Gmbh Datenträger mit lumineszierenden Motivbereichen
GB2576218B (en) 2018-08-10 2021-09-15 De La Rue Int Ltd Security devices and methods of authentication thereof

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