EP3225417B1 - Support de données doté d'une impression - Google Patents

Support de données doté d'une impression Download PDF

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Publication number
EP3225417B1
EP3225417B1 EP17000441.0A EP17000441A EP3225417B1 EP 3225417 B1 EP3225417 B1 EP 3225417B1 EP 17000441 A EP17000441 A EP 17000441A EP 3225417 B1 EP3225417 B1 EP 3225417B1
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EP
European Patent Office
Prior art keywords
colored
layer
visible light
ink layers
data carrier
Prior art date
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Active
Application number
EP17000441.0A
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German (de)
English (en)
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EP3225417A1 (fr
Inventor
Jana Kisselova-Weckerle
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 EP3225417A1 publication Critical patent/EP3225417A1/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
    • B42D25/30—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 data carrier, in particular a value or security document, with a substrate and applied to the substrate imprint.
  • the invention also relates to a method for producing such a data carrier.
  • Data carriers such as valuables or ID documents, but also other valuables, such as branded articles, are usually provided with imprints, which may have decorative, information-carrying or security-securing character. Since the space available for imprints on many data carriers, such as banknotes and cards (eg smart cards, driver's licenses, ID cards, etc.), is limited, imprints are advantageously used, the realize several of the mentioned characteristics simultaneously, such as information-bearing intaglio Elements that, at the same time, represent safety-enhancing security features due to their feel.
  • imprints Since the space available for imprints on many data carriers, such as banknotes and cards (eg smart cards, driver's licenses, ID cards, etc.), is limited, imprints are advantageously used, the realize several of the mentioned characteristics simultaneously, such as information-bearing intaglio Elements that, at the same time, represent safety-enhancing security features due to their feel.
  • the document EP 2 687 879 A1 discloses a data carrier comprising a substrate and a security element which shows a multicolored motif in visible light in additive color mixture, the security element being formed by a layer sequence of at least four mutually at least partially overlapping color layers, the layer closest to the substrate being a color layer the color layer three color-colored layers are present, each containing an effect pigment, each containing one of the multi-color layers in the visible light red, green or blue appearing effect pigment.
  • the present invention seeks to provide a data carrier of the type mentioned, which avoids the disadvantages of the prior art.
  • the data carrier should be provided with a print that combines an appealing visual appearance with high security against counterfeiting.
  • the directional information "above” and “below” in this description always refer to the substrate of the data carrier. Of two overlapping or overlapping layers, the layer further from the substrate lies “above” the closer layer, the latter being correspondingly “below” the former.
  • the multicolored motif is in particular an RGB motif with a multitude of different colors, which can all be represented as mixed colors of the primary colors red (R), green (G) and blue (B) of the RGB color space.
  • one of the multicolor color layers contains a luminescent substance which luminesces red after UV light excitation and an effect pigment which appears red in the visible light
  • one of the multicolor color layers contains a luminescent substance luminescent after UV light excitation and one in visible light contains green-appearing effect pigment
  • one of the color-colored layers contains a luminescent blue luminescent after UV light excitation and an effect pigment appearing blue in the visible light.
  • the colors of the visible motif and the luminescent motif are the same, since each colored color layer in UV light shows the same primary color as in visible light.
  • the hues of luminescent material after UV light excitation and effect pigment in visible light can also differ from each other in one, two or even all three color layers.
  • the color tone of the luminescent substance after UV light excitation and the hue of the effect pigment in visible light differ from one another in each of the three color layers.
  • one of the colored color layers may contain a luminescent substance that luminesces red after UV light excitation and an effect pigment that appears blue in visible light (alternatively: green), one of the multicolor color layers a luminescent substance that luminesces green after UV light excitation, and red light in visible light ( alternatively: blue) appearing effect pigment, and one of the colored color layers contain a blue luminescent substance luminescing after UV light excitation and an effect pigment appearing green in the visible light (alternatively: red).
  • red blue luminescent substance luminescing after UV light excitation and an effect pigment appearing green in the visible light
  • one of the basic colors can also be preserved when changing from the visible motif to the UV motif, while the other two primary colors are exchanged for one another.
  • the resulting base color then provides a color constant reference point for the color change of the other two primary colors.
  • the color layer with its effect pigment showing the dominant hue of the colored motif, that of the black color layer farthest from the three color layers is an advantage
  • the color dye layer whose luminescent substance luminesces in the dominant hue of the colored motif farthest from the black color layer is advantageous removed the three color-colored layers.
  • the black color layer is present in a first partial area of the imprint and is recessed in a second partial area of the imprint, wherein the colored motif appears in the visible light in the first partial area with bright colors and in the second partial area with paler ones Colors appear, and the colored subject in ultraviolet light appears in bright colors in the second section and appears in lighter colors in the first section.
  • the first and second partial areas of the imprint are approximately the same formed large, that is, the area shares differ by less than 10%.
  • the sub-layer sequence formed by the three multicolor color layers may be mirror-symmetrical in the plane of the imprint, the black color layer being essentially present in one of the mirror-symmetrical halves of the imprint and the black color layer being essentially left out in the other of the mirror-symmetrical halves of the imprint.
  • the four color layers mentioned are directly superimposed without any further intermediate layers.
  • the layer sequence additionally contains a white color layer, without luminescent substance, arranged over the three color layers, but with an effect pigment which appears white in the visible light against a dark background.
  • the black color layer may simply be continuous, ie without recesses within its outer contour.
  • the five color layers mentioned are directly above one another without further intermediate layers.
  • effect pigments as is customary, pigments are referred to which impart additional properties such as angle-dependent color or gloss changes or texture to the system in which they are embedded.
  • the effect pigments used are advantageously formed by interference pigments or liquid-crystal pigments, in particular by multilayer interference pigments or cholesteric liquid-crystal pigments.
  • effect pigments are the pigments marketed by Merck KGaA under the names Iriodin (R) , Colorcrypt (R) and Pyrisma (R) into consideration. Both pigments based on liquid-crystalline material and pearlescent pigments are inherently translucent or semitransparent.
  • the effect pigments can also be formed by multilayer interference-layer pigments, which in particular have a thin-film structure which contains at least one reflection layer, one absorber layer and a dielectric spacer layer arranged between the reflection layer and the absorber layer, or which contains an alternating sequence of high- and low-refractive dielectric layers.
  • Suitable luminescent substances are all fluorescent and phosphorescent substances which emit red, green or blue light after appropriate excitation.
  • the energy transfer from excitation to luminescence can also be multistage, that is to say a first substance absorbs the excitation energy and transfers it directly or via further intermediate steps to the finally emitting luminescent substance.
  • the excitation of the luminescent substance or the first substance takes place in the ultraviolet spectral range.
  • a colored ink layer in addition to the binder, the effect pigment with advantage in a proportion between 5% and 20% and useful with pigment sizes between 5 microns and 60 microns.
  • the proportion of luminescent substance is advantageously between 1% and 10% with appropriate particle sizes between 0.1 ⁇ m and 20 ⁇ m.
  • a colored ink layer may contain additives, such as a photoinitiator, thinner or antifoam.
  • the pigment size of the effect pigments is expediently selected between 5 .mu.m and 60 .mu.m, and advantageously between 5 .mu.m and 25 .mu.m when applied using intaglio printing.
  • the color layers can be printed on the substrate, in particular by screen printing, but more preferably by gravure printing.
  • the color layers are applied in a printing unit to the substrate, which is connected directly to a paper machine for the production of the substrate, so that the multicolor motif is still applied during substrate production.
  • the data carrier described has at the same time a high visual due to the complex interaction of visible motif and luminescence Attractiveness and high counterfeit protection.
  • the luminescent substances represent an additional hedge of the imprint, which can not be duplicated by the latent information. Since the multicolor color layers each contain both a luminescent substance and an effect pigment, inking units with visually imperceptible colors do not have to be used as a further advantage in printing.
  • Fig. 1 shows a schematic representation of a banknote 10, which is provided with an imprint 12 according to the invention.
  • the print 12 shows both in visible light and when viewed in UV light in each of additive color mixing a multi-colored motif in RGB technology, which represents a butterfly 14 in the embodiment.
  • the butterfly motif 14 appears very bright and with a broad spectrum of color shades. This applies both to normal daylight or artificial light viewing in visible light, as well as for viewing in ultraviolet light, such as in the authenticity of the banknote 10 under a UV lamp on a commodity.
  • the butterfly 14 even appears in both viewing conditions with the same RGB color scheme, although with different spatial brightness distribution (FIG. Fig. 4 ), which on the one hand shows an attractive luminous appearance and on the other hand also has a high attention and recognition value, since genuine RGB colors under UV illumination are unusual and are therefore not expected by the user.
  • the interplay of the visible motif produced by the same imprint 12 with the luminescent motif allows a simple authenticity check, but is difficult to imitate because the technological hurdles for a counterfeiter due to the limited availability of the required special inks and the required know-how in the production are very high.
  • Fig. 2 shows schematically a cross section of the banknote 10 in the region of the imprint 12 when viewed in visible light (VIS)
  • Fig. 3 shows the same cross section when viewed in UV light (UV).
  • the imprint 12 is formed by a layer sequence 20 of four color layers 22, 24, 26, 28, which is applied to the white substrate 30 of the banknote 10.
  • the layer 22 of the layer sequence closest to the substrate 30 is a black color layer which contains neither luminescent substances nor effect pigments.
  • RGB red
  • G green
  • B blue
  • All color layers 22-28 are in motif form and can also be recessed within their outer contour, so that all color combinations of the primary colors R, G, B can occur both with and without the black color layer 22 as a background.
  • the colored ink layer 24 contains an effect pigment that appears blue in the visible light
  • the colored ink layer 26 has an effect pigment that appears green in the visible light
  • the colored ink layer 28 has an effect pigment that appears red in the visible light. Since the effect pigments are translucent or semitransparent, they appear particularly bright in visible light when viewed against a dark background, In the present case, therefore, a non-recessed area of the black ink layer 22 is arranged. This is in the left half of the picture Fig. 2 indicated by the longer arrows of the reflected light.
  • an intense blue image impression 40 results and in areas in which the color-colored layer 24 with the blue-appearing effect pigment and the Colored color layer 28 with the red-appearing effect pigment over the black color layer 22 is present, an intense magenta image impression 41. If all three color-colored layers 24, 26, 28 on the black. As a result of the additive color mixture of the effect pigments, an intense white image impression 42 results.
  • a white image impression 48 can also be formed by a region in which all four color layers 22-28 are recessed and the white banknote substrate 30 is visible.
  • an intense green image impression 44 or an intensive red image impression 46 results, and a combination of the colored color layers 24 and 26 results in an intense cyan image impression 43 and by a combination of the colored color layers 26 and 28, an intense yellow image impression 45.
  • a deep black image impression 47th results in areas in which only the black color layer 22 is present.
  • the colored color layers 24, 26, 28 are present in recessed areas of the black color layer 22, ie above the white banknote substrate 30, then the same color impressions result qualitatively, but due to the lack of a dark background with significantly reduced luminosity.
  • the color impression of the imprint 12 under UV illumination is independent of the effect pigments used in the color layers 24-28, but rather depends only on the luminescent substance contained in the respective color layer. It is therefore possible to produce under UV illumination a multicolor luminescent motif with the same color impression as that of the visible subject, as well as a multicolor luminescent motif which, while displaying the same picture elements in the same arrangement as the visible subject, has a very different color scheme ,
  • the colored color layer 24 specifically contains a luminescent substance which luminesces blue after UV light excitation
  • the colored color layer 26 contains a luminescent substance which luminesces green after UV light excitation
  • the colored color layer 28 contains a luminescent substance which luminesces red after UV light excitation.
  • the substrate 30 of the banknote itself which is free of optical brighteners, appears black, so that the luminescent substances luminesce in the regions lying above the recessed area of the black color layer 22 after UV excitation with high luminosity, as in the right half of FIG Fig. 3 indicated by the longer arrows of the emitted light.
  • an intense blue image impression 50 results and in areas in which the colored color layer 24 with the blue luminescent Luminescent material and the colored ink layer 28 with the red luminescent luminescent substance in front of the banknote substrate 30 are present, an intense magenta image impression 51. If all three color ink layers 24, 26, 28 in front of the banknote substrate 30 before, results from the additive color mixing of the luminescent intense white picture impression 52.
  • regions with only the colored ink layer 26 or 28 in front of the banknote substrate 30 result in an intense green image impression 54 or an intensive red image impression 56, and an intense cyan image impression 53 results from a combination of the color films 24 and 26 and by a combination of the multi-color layers 26 and 28 an intense yellow image impression 55.
  • an intense green image impression 54 or an intensive red image impression 56 results in a combination of the color films 24 and 26 and by a combination of the multi-color layers 26 and 28 an intense yellow image impression 55.
  • a black image impression 58 also formed by a range in which the three color ink layers 24-28 are recessed and the black color layer 22 is visible.
  • the mirror-symmetrical butterfly 14 of the Fig. 1 allows a particularly impressive visual authenticity check.
  • the black color layer 22 is provided in the form of the wing 60, while the black color layer 22 is recessed in the left wing 62, so that in the print 12 substantially equal portions with and without black color layer 22 exist.
  • Fig. 4 (a) In the visible light, the effect pigments of the colored color layers 24-28 are visible in the area of the right wing 60 of the butterfly because of the black color layer 22 with high luminosity, whereas in the region of the left wing 62 they are only relatively pale due to the lack of dark background appear. Due to the additive color mixing of the effect pigments, the right wing 60 appears bright and with a broad RGB hue spectrum.
  • the imprint 12 is viewed in the UV light, as in Fig. 4 (b)
  • the colored color layers 24-28 are directly on the banknote substrate 30, so that there is a bright luminescence is observed, while the luminescence in the region of the right wing 60 is only weaker because of the present there black color layer 22. Due to the additive color mixing of the luminescent substances, the left wing 62 appears bright and with a broad RGB hue spectrum.
  • the RGB colorings of the visible subject of the Fig. 4 (a) and the luminescent motif of Fig. 4 (b) match, the left wing 62 in the UV light the same color as the right wing 60 in visible light.
  • the banknote 10 When the banknote 10 is inserted under a UV lamp, the user thus perceives a striking shift in brightness from the right to the left wing of the butterfly, with the coloration unchanged.
  • Such a change of appearance is easy too Verify and also very distinctive, so that it is connected to the viewer with a high recognition value.
  • Fig. 5 shows a further embodiment of the invention with a five-layer structure of the imprint 12.
  • the imprint 12 on the substrate 30 is formed by a layer sequence 70 which consists of five color layers 72, 74, 76, 78, 80.
  • the layer 72 of the layer sequence closest to the substrate 30 is a black color layer which contains neither luminescent substances nor effect pigments.
  • Over the black color layer 72 are as in the embodiment of Fig. 2 three multi-color layers 74, 76, 78, with each of which by the simultaneous addition of a luminescent and an effect pigment one of the primary colors red, green and blue of the RGB color space for additive color mixing is generated, independently for the visible subject and the UV motive.
  • a white color layer 80 disposed over the three color ink layers 74-78, which contains no luminescent substance but an effect pigment which appears white in the visible light against a dark background.
  • the colored color layers 74-78 and the white color layer 80 are in the form of motifs and can also be partially recessed within their outer contour.
  • the black color layer 72 in this embodiment need not contain any recesses within its outer contour, since a desired white color impression in the visible light can be generated by the white color layer 80 with a particularly high luminosity.

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  • Credit Cards Or The Like (AREA)
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Claims (13)

  1. Support de données (10), notamment document de valeur ou de sécurité, comportant un substrat (30) et une impression (12) sur le substrat, qui montre un motif multicolore (14) tant dans la lumière visible que dans la lumière UV respectivement en mélange de couleur additive, dans lequel
    - l'impression est formée par une suite de couches (20) composé d'au moins quatre couches colorées (22,24,26,28) se superposant au moins partiellement les unes les autres,
    - la couche la plus proche du substrat (22) est une couche colorée noire sans substances luminescente et sans pigments à effet, et
    - trois couches colorées multicolores (24,26,28) sont présentes au-dessus de la couche colorée noire, qui contiennent respectivement tant une substance luminescente qu'un pigment à effet, dans lequel
    - respectivement une des couches colorées multicolores contient une substance luminescente qui produit une luminescence rouge, vert ou bleu après une excitation lumineuse aux UV et respectivement une des couches colorées multicolores contient un pigment à effet apparaissant en rouge, vert ou bleu dans la lumière visible.
  2. Support de données selon la revendication 1, caractérisé en ce que une des couches colorées multicolores contient une substance luminescente qui produit une luminescence rouge après une excitation lumineuse aux UV et contient un pigment à effet apparaissant en rouge dans la lumière visible, une des couches colorées multicolores contient une substance luminescente qui produit une luminescence verte après une excitation lumineuse aux UV et contient un pigment à effet apparaissant en vert dans la lumière visible et une des couches colorées multicolores contient une substance luminescente qui produit une luminescente bleue après une excitation lumineuse aux UV et contient un pigment à effet apparaissant en bleu dans la lumière visible.
  3. Support de données selon la revendication 1, caractérisé en ce que dans chacune de trois couches colorés multicolores la teinte de la substance luminescente après excitation lumineuse aux UV et la teinte du pigment à effet dans la lumière visible sont différentes l'une de l'autre.
  4. Support de données selon au moins une des revendications 1 à 3, caractérisé en ce que le motif coloré dans la lumière visible contient une teinte dominante rouge, verte ou bleue et en ce que la couche colorée multicolore, dont le pigment à effet montre la teinte dominante du motif coloré, constitue celle des trois couches colorées multicolores qui est la plus éloignée de la couche colorée noire.
  5. Support de données selon au moins une des revendications 1 à 4, caractérisé en ce que le motif coloré contient dans la lumière UV une teinte dominante rouge, verte ou bleue et en ce que la couche colorée multicolore, dont la substance luminescente produit une luminescence dans la teinte dominante du motif coloré, constitue celle des trois couches colorées multicolores qui est la plus éloignée de la couche colorée noire.
  6. Support de données selon au moins une des revendications 1 à 5, caractérisé en ce que la couche colorée noire est présente dans une première zone partielle de l'impression et est évidée dans une deuxième zone partielle de l'impression, dans lequel le motif coloré apparaît avec des couleurs vives dans la première zone partielle dans la lumière visible et apparaît avec des couleurs pâles dans la deuxième zone partielle, le motif coloré apparaît dans la deuxième zone partielle avec des couleurs vives dans la lumière UV et apparaît dans la première zone partielle avec des couleurs pâles.
  7. Support de données selon la revendication 6, caractérisé en ce que la première et la deuxième zone partielle de l'impression sont d'une taille approximativement identique, notamment en ce que la suite de couches formée par les trois couches colorées multicolores est symétrique au niveau de l'impression et la couche colorée noire est présente essentiellement dans l'une des moitiés symétriques de l'impression et la couche colorée noire est évidée essentiellement dans l'autre des moitiés symétriques de l'impression.
  8. Support de données selon au moins une des revendications 1 à 7, caractérisé en ce que la suite de couches contient en outre une couche colorée blanche sans substance luminescente, mais avec un pigment, disposée au-dessus de trois couches colorées multicolores, qui apparaît en blanc sur un arrière-plan sombre dans la lumière visible.
  9. Support de données selon la revendication 8, caractérisé en ce que la couche colorée noire est configurée de manière simplement cohérente.
  10. Support de données selon au moins une des revendications 1 à 9, caractérisé en ce que les pigments à effet sont formés par des pigments d'interférence ou des pigments de cristaux liquides, notamment par des pigments d'interférences à plusieurs couches ou des pigments de cristaux liquides cholestériques.
  11. Procédé de fabrication d'un support de données selon une des revendications 1 à 10, dans lequel
    - sur un substrat une suite de couches composée d'au moins quatre couches colorées se superposant partiellement les unes les autres est appliqué,
    - dans lequel ensuite une couche colorée noire sans substance luminescente et sans pigments à effet est appliquée, et
    - trois couches colorées multicolores sont appliquées sur la couche colorée noire, qui contiennent respectivement tant une substance luminescente qu'un pigment à effet, dans lequel
    - respectivement une des couches colorées multicolores est appliquée avec une substance luminescente qui produit une luminescence rouge, verte ou bleue après une excitation lumineuse aux UV, et respectivement une des couches colorées multicolores est appliquée avec un pigment à effet apparaissant en rouge, vert ou bleu dans la lumière visible.
  12. Procédé selon la revendication 11, caractérisé en ce que les couches colorées sont imprimées sur le substrat par rotogravure.
  13. Procédé selon la revendication 11 ou 12, caractérisée en ce que les couches colorées sont appliquées sur le substrat dans un groupe d'impression, qui est directement raccordé à une machine à papier pour produire le substrat, de sorte que le motif multicolore soit appliqué pendant la fabrication du substrat.
EP17000441.0A 2016-04-01 2017-03-17 Support de données doté d'une impression Active EP3225417B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016003967.1A DE102016003967A1 (de) 2016-04-01 2016-04-01 Datenträger mit Aufdruck

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EP3225417A1 EP3225417A1 (fr) 2017-10-04
EP3225417B1 true EP3225417B1 (fr) 2018-11-28

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Publication number Priority date Publication date Assignee Title
DE102018000343A1 (de) * 2018-01-17 2019-07-18 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement mit Lumineszenz-Motivbereich
AT521847A1 (de) * 2018-11-09 2020-05-15 Hueck Folien Gmbh Verfahren zur Herstellung eines Sicherheitsmerkmals
DE102021002759A1 (de) * 2021-05-27 2022-12-01 Giesecke+Devrient Currency Technology Gmbh Verfahren zur Erzeugung einer lumineszenten Sicherheitsmarkierung und lumineszente Sicherheitsmarkierung
DE102022000101A1 (de) * 2022-01-12 2023-07-13 Giesecke+Devrient Currency Technology Gmbh Optisch variables Sicherheitselement

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DE102004039355A1 (de) * 2004-08-12 2006-02-23 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
JP5647047B2 (ja) * 2011-03-18 2014-12-24 日本発條株式会社 識別媒体
DE102012218053A1 (de) * 2012-10-02 2014-01-30 Bundesdruckerei Gmbh Sicherheitsmerkmal, das Sicherheitsmerkmal enthaltendes Wert- und/oder Sicherheitsprodukt sowie Verfahren zur Herstellung des Wert- und/oder Sicherheitsprodukts

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