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WO2018188784A1 - Élément de sécurité comportant une zone caractéristique colorée, support de données et procédé de fabrication d'un élément de sécurité - Google Patents

Élément de sécurité comportant une zone caractéristique colorée, support de données et procédé de fabrication d'un élément de sécurité Download PDF

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Publication number
WO2018188784A1
WO2018188784A1 PCT/EP2018/000175 EP2018000175W WO2018188784A1 WO 2018188784 A1 WO2018188784 A1 WO 2018188784A1 EP 2018000175 W EP2018000175 W EP 2018000175W WO 2018188784 A1 WO2018188784 A1 WO 2018188784A1
Authority
WO
WIPO (PCT)
Prior art keywords
security element
effect pigments
platelet
relief
element according
Prior art date
Application number
PCT/EP2018/000175
Other languages
German (de)
English (en)
Inventor
Patrick Renner
Original Assignee
Giesecke+Devrient Currency Technology Gmbh
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 Giesecke+Devrient Currency Technology Gmbh filed Critical Giesecke+Devrient Currency Technology Gmbh
Priority to EP18720512.5A priority Critical patent/EP3609717B1/fr
Publication of WO2018188784A1 publication Critical patent/WO2018188784A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/324—Reliefs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/373—Metallic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—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

Definitions

  • the invention relates to a security element for securing security papers, documents of value and other data carriers, which has a colored feature area.
  • the invention also relates to a method for producing such a security element as well as a correspondingly equipped data carrier.
  • Data carriers such as valuables or identity documents, but also other valuables, such as branded articles, are often provided with security elements for the purpose of security, which permit verification of the authenticity of the data carrier and at the same time serve as protection against unauthorized reproduction.
  • security elements for the purpose of security, which permit verification of the authenticity of the data carrier and at the same time serve as protection against unauthorized reproduction.
  • DE 10 2014 018 204 A1 uses platelet-shaped metal pigments, which conform to a relief structure as a reflection layer.
  • the metal pigments are initially mixed with a dye, with the dye forming a layer over the reflective layer.
  • the object of the invention is to specify a security element of the type mentioned at the outset with an attractive visual appearance.
  • a security element for securing security papers, value documents and other data carriers contains a colored feature area with different colors. It is provided that the feature area has at least two partial areas with relief structures of different surface geometry; the feature area is provided with a coloring ink having a coloring agent and a plurality of platelet-shaped effect pigments; and the platelet-shaped effect pigments in the two partial areas
  • the two named subregions and possibly further subregions of the feature region are advantageously designed in the form of patterns, characters or codes. Due to the different surface geometry of the relief structures, the two partial areas can already produce different visual appearances even when viewed.
  • the relief structures are formed in a first subregion in the form of holographic structures, in a second subregion in the form of small micromirrors and produce a holographic representation in the first subregion and in the second subregion a three-dimensionally protruding achromatic image.
  • color is used in the present description as a generic term for the various color properties, namely the hue, the saturation and the brightness of a color impression. In some cases, the terms hue and color intensity are also used. Color means in particular color, that is, a color that is not black, white or gray or has a purely metallic appearance. The different color impressions arise in particular when looking at the feature area from below (from the relief structure forth). The printing ink is arranged on the surface of the relief structure (above). The consideration thus takes place from the bottom of the relief structure ago (or through the relief structure through).
  • the different color impression in the two subregions may in particular consist of a different color intensity of the same hue, for example in a slightly reddish appearance on the one hand and an intense red appearance on the other.
  • the relief structures have elevations and depressions, wherein a survey together with the adjacent depressions is often referred to as a structural element of the relief structures.
  • the structural elements can be formed, for example, by small micromirrors, microlenses, small prisms, or tri-, quadrilateral, or multisided pyramids.
  • the structural elements typically have two or more flanks, which may be flat or curved.
  • the lateral dimension of a structural element is referred to as the structural width, the vertical dimension as the structural depth.
  • the platelet-shaped effect pigments (colorants) and the relief structure are coordinated so that the different color impressions are generated.
  • the distance and / or the orientation of the effect pigments is predetermined in the subregions by the relief structure.
  • the effect pigments are present - in all sub-areas - on the relief structure, in particular flat or in places.
  • the color impression in the first of the two partial areas is (more) determined by the effect pigments and in the second of the two partial areas (stronger) by the colorant.
  • effect pigments are spaced differently from the surface of the relief structure, a correspondingly different amount of colorant is arranged between the effect pigments and the surface of the relief structure.
  • the mean distance between the surface and the effect pigment determines the space available for the colorant.
  • the distance can be adjusted (deliberately controlled) by selecting the size of the effect pigments as well as the shape and / or size of the structural elements of the relief structure.
  • correspondingly different first and second amounts of colorant are arranged between the effect pigments and the relief structure in the two subareas, the first and the second subarea.
  • the effect pigments in the first partial region are (essentially) flat on the surface of the relief.
  • the effect pigments are spaced from the surface. In the first part of the effect pigments are thus arranged without a gap. Consequently, there is no colorant between the relief surface and the effect pigment in the first subregion.
  • the effect pigments are present only in places on the surface of the relief structure. The effect pigment is therefore arranged in the second subregion of the surface at a distance, in particular an average distance, for example based on the effect pigment.
  • the relief structures in the two partial regions are formed by structural elements of a first or second structural width, wherein the ratio of the larger to the smaller structural width is greater than 1.5, preferably greater than 2.0, particularly preferably greater than 4.0 , and most preferably greater than 8.0.
  • the ratio of the larger to the smaller structure width is advantageously not too large and expediently less than 50, in particular less than 25.
  • the relief structures in the two subregions are formed by structural elements of a first or second structure depth and the ratio of the larger to the smaller structure depth is greater than 1.2, preferably greater than 1.5, particularly preferably greater than 2 , 0 is.
  • the relief structures in the first subregion have a smaller structure width and at the same time a greater structure depth than the relief structures in the second subregion.
  • the relief structure is advantageously formed in at least one subregion by a fine relief structure, advantageously a diffractive relief structure, in particular a hologram structure. Furthermore, the relief structure is advantageously formed in at least one subregion by a middle or coarse relief structure, in particular a micromirror structure, a microlens structure or a microcavity structure.
  • Fine relief structures consist of structural elements with a typical structure width of approximately 1 ⁇ m and a structure depth which, depending on the desired intensity of the hue, is above 200 nm, in particular between 200 nm and 1500 nm.
  • Examples of fine relief structures are holgraphic structures.
  • Middle relief structures consist of structural elements with a typical structure width of about 10 ⁇ and a structural depth of up to 10 ⁇ .
  • Examples of medium relief structures are micromirror structures.
  • Rough relief structures consist of structural elements with a typical structure width of about 15 to 30 ⁇ , especially from 20 to 25 ⁇ , and a structural depth of up to 10 ⁇ .
  • coarse relief structures are microlens structures. In the middle and rough reli- ef Modellen are the structure geometry, the structure width and the brilliance of the pigments of particularly high importance, while with the fine relief structures the color intensity can be adjusted particularly strongly by the structure depth.
  • the platelet-shaped effect pigments advantageously have a ratio of the largest to the smallest diameter (diameter-to-thickness ratio) which is more than 5: 1, preferably more than 10: 1, and particularly preferably more than 50: 1 or even more than 100: 1 is.
  • the largest diameter of the platelet-shaped effect pigments is preferably between 5 ⁇ and 20 ⁇ , preferably between 8 ⁇ and 12 ⁇ . Platelets with a maximum diameter of about 10 ⁇ have a high reflectivity, smaller platelets appear less metallic due to the increasing light scattering, which usually has a rather undesirable influence on the color of the printing ink.
  • Suitable platelet-like effect pigments are, for example, the particles and pigments described in the publications EP 1 689 586 B1, WO 2010/069823 A1 and WO 2013/090983 A1.
  • the platelet-shaped effect pigments have a largest diameter which is of the same order of magnitude as the largest flank width of the structural elements having the larger feature width and which is at least twice as large as the feature width of the feature elements having the smaller feature width.
  • the flanks of the structure demente with the larger structure width are designed flat with particular advantage, so that the platelet-shaped effect pigments can be deposited well on these flanks during printing.
  • the flanks of the narrower structural elements can also curved or irregular, as is typically the case with a holographic structure.
  • the platelet-shaped effect pigments have a largest diameter, which lies between the smaller and the larger of the structure widths of the structural elements of the two partial regions.
  • the platelet-shaped effect pigments are metal pigments.
  • the coloring forms are metal pigments.
  • Printing ink a colored metallization of the relief structures, wherein the colored, metallic color impression differs in the two sub-areas.
  • a partial area shows a weakly colored, predominantly metallic-looking appearance, while the other partial area appears with an intensely colored metallic color.
  • the relief structure is provided to cause an optical appearance (hologram, tilt image, image with motion effect, image with camber effect ...) if it has a reflection layer.
  • Such relief structures are known in sufficient variety for different effects.
  • the metal pigments form the reflection layer for the relief structure.
  • the visual appearance does not occur.
  • the metal pigments advantageously show the best possible non-leafing. So they do not move up in the ink. Instead, the metal pigments settle on the surface of the relief structure after application of the printing ink.
  • platelet-shaped metal pigments are PVD aluminum pigments, PVD brass pigments, PVD copper pigments, aluminum flakes or platelet-shaped nanoparticles.
  • the platelet-shaped effect pigments are color pigments.
  • the platelet-shaped effect pigments can be both single-layered and multi-layered and, for example, consist of a support with a color or metal layer or a multi-layer interference structure.
  • the coloring agent of the coloring ink is preferably transparent or translucent and may be formed by color pigments or a dye.
  • a high proportion of solvent or water are preferred.
  • a high pigment / Festkör per ratio is advantageous (high or very high proportion of pigment in the total solids).
  • Useful solvent formulations are based on nitrocellulose or polyvinyl butyral as main components, while aqueous systems are based for example on acrylates and / or polyurethanes.
  • the contrast and the color intensity can in particular also be adjusted by the proportion of colorant, in particular of coloring pigments in the printing ink.
  • the relief structures are expediently formed in a transparent layer in order to prevent the viewing of the security element from the side of the relay. ef Siemens ago allow.
  • the transparent layer can be formed for example by a transparent embossing lacquer layer, in particular a UV-curing embossing lacquer layer, a thermoplastic layer, or a transparent foil, for example a thermoplastic foil.
  • the feature area has at least one further subarea with different surface geometry and the platelet-shaped effect pigments are differently oriented and / or spaced apart in the at least one further subarea by the different surface geometry of the relief structures, and the printing ink thereby creates a different color impression of the two sections
  • partial areas with fine, medium and coarse relief structures may be provided and / or partial areas with different structural depths.
  • the depth of color can be determined by the texture depth.
  • the orientation of the effect pigments can be uniform in both subregions, for example, in each case parallel to the main surface but with different distances. However, the effect pigments can also be aligned in one subarea and be unaligned in the other subarea, ie, for example. with randomly distributed orientation. The spacing of the effect pigments can be the same even in both subareas and the orientation varies. Combinations with more than two - such first and / or second - sections are provided.
  • the security element can also have further functional layers, protective lacquer layers and further authenticity features and can be divided into partial areas.
  • chen be provided with recesses to allow a partial review.
  • Recesses can be provided in particular in the coloring printing ink, wherein both the colorant and the effect pigments can be removed in the region of the recess, or even only the effect pigments can be removed or modified while the colorant remains in the layer.
  • the invention also includes a data carrier with a security element of the type described.
  • the security element may in particular be arranged in a window region of the data carrier, for example via an opening or a transparent or translucent subregion of the data carrier.
  • the data carrier can be a value document, such as a banknote, in particular a paper banknote, a polymer banknote or a foil composite banknote, a share, a bond, a certificate, a coupon, a check, a high-quality admission ticket, but also an identification card, such as a credit card, a bank card, a cash card, an authorization card, an identity card or pass personalization page act.
  • the invention further includes a method for producing a security element of the type described above, in which a carrier is provided and provided with a preferably transparent layer, the layer is provided in a feature area with at least two partial areas with relief structures of different surface geometry, the feature area is provided with a flowable coloring printing ink, which has a colorant and a multiplicity of platelet-shaped effect pigments, wherein the platelet-shaped effect pigments in the two partial areas are due to the different surface geometry of the relief structures
  • the colorant and the platelet-like eff ectpigmen- te when applying the ink to the feature area in at least one of the subregions spatially separated, in particular in the vertical direction.
  • the colorant is arranged according to the distance between the effect pigment and the relief structure.
  • FIG. 1 is a schematic representation of a banknote with a security element according to the invention in the form of a wide security strip
  • FIG. 2 is a schematic cross section of the security strip of
  • Figure 3 shows an embodiment of a banknote with a window area over which a security element according to the invention is arranged
  • FIG. 4 shows a further embodiment of a banknote with a security element arranged above a window area.
  • FIG. 1 shows a schematic representation of a banknote 10, which is provided with a security element according to the invention in the form of a wide security strip.
  • the invention is not limited to security strips and banknotes, but can also be used, for example, in partially embedded security threads or in foil patches and cover foils which are arranged above an opaque area, a window area or a through opening of any desired data carrier.
  • the security strip 12 of FIG. 1 shows in plan view in a feature area 14 a colored, metallic appearance with regionally different shades or color intensities, wherein the areas of different color are arranged in register with the patterns 16 and mark 18 of the security strip 12.
  • the term "color” is used as the parent term for the various color properties.
  • the patterns 16 are shown there schematically for illustration purposes as geometric shapes, but in practice the patterns 16 can of course also form more complex patterns, characters or codes, for example architectural or technical motifs, motifs or portraits ,
  • the security element 12 When viewed in plan view, the security element 12 shows register exactly in the areas of the pattern 16 and the digit sequence 18 a pale reddish and predominantly metallic-looking appearance, while the surrounding background grundber oak 15 occur with an intense red Metallic lic color.
  • FIG. 2 shows a schematic cross section of the security element 12 along the line II-II of FIG Figure 1 shows.
  • any further layers such as adhesive layers, protective lacquer layers, further functional layers or a carrier film are omitted for the sake of simplicity.
  • the security element 12 contains a transparent embossing lacquer layer 20, in which at least two partial regions 22, 24 with relief structures of different surface geometry are provided in the feature region 14.
  • a first subregion 22 which forms the background region 15 of FIG. 1
  • the relief structures are fine and deep
  • the relief structures in the first, fine portion 22 by structural elements 32 having a feature width of 1 ⁇ and a structural depth of 0.8 ⁇ formed, while the relief structures in the second coarse portion 24 by structural elements 34 with a feature width of 10 ⁇ and a structural depth are formed by 0.5 ⁇ .
  • the ratio of the larger to the smaller structure width is thus
  • the relief structures 32 of the first portion 22 have at the same time a smaller structure width (1 ⁇ ) and a greater structure depth (0.8 ⁇ ) than the relief structures 34 of the second portion 24th
  • a coloring ink 40 is printed, which in addition to a translucent red colorant 42 contains a plurality of platelet-shaped metal pigments 44.
  • the platelet-shaped metal pigments 44 have a high ratio of platelet diameter to platelet thickness of 20: 1 or more.
  • the average of the largest plate diameter ie the diameter in the plane of the platelets
  • the platelet thickness is below 1 ⁇ , for example at 200 nm.
  • the different structural sizes of the structural elements 32, 34 lead to a different interaction in the two partial areas 22, 24 the red colorant 42 and the platelet-shaped metal pigments 44 with the embossed structure and in particular to a different, selective spatial separation of colorant 42 and metal pigments 44.
  • the red colorant 42 flows after the application of the ink 40 in the recesses 36 of fine structure elements 32, while the platelet-shaped metal pigments 44 come to lie on the peaks of the elevations because of their size, which far exceeds the structural width of the structural elements 32 (shown schematically in the left half of FIG. 2).
  • the partial region 22 produces a metal column 44 below the colorant 42 as seen through the depressions of the structural elements 32 filled with colorant 42 intense red-looking color impression.
  • the flank width of the structural elements 34 is of the same order of magnitude as the flake size of the metal pigments 44; in addition, the structural elements 34 are formed only with a flat inclination.
  • the metal pigment platelets 44 are therefore largely deposited on the flanks 38 of the wide structural element 34 when the ink 40 is printed in the partial region 24, while the flowable colorant 42 collects substantially over the platelet-covered structural elements (shown schematically in the right half of FIG Fig. 2 shown).
  • the partial region 24 thus produces a slightly reddish, predominantly metallic color impression due to the dominant metallic reflection of the metal pigments 44.
  • the different color impressions of the subregions 22, 24 are directly attributable to the interaction between the characteristic properties of the metal pigments 44 or the colorant 42 on the one hand and the surface geometry of the relief structures on the other hand, the different color impressions are automatically perfect for those through the structural elements 32, 34 adapted areas.
  • the patterns 16 and 18 may be formed by micromirror arrangements in which the individual micromirrors 34 have a dimension of approximately 10 ⁇ m, while the background region 15 is formed by fine, holographic structures 32 having feature widths of the order of magnitude of 1 ⁇ m.
  • platelet-shaped effect pigments for example platelet-shaped color pigments, can in principle also be provided in the printing ink.
  • the security element 12 of FIGS. 1 and 2 can be produced, for example, by coating a carrier film with the transparent embossing lacquer layer 20 and embossing the desired relief structure with the structure elements 32, 34 into the embossing lacquer layer 20. Then a flowable coloring ink 40 is printed with the red colorant 42 and the platelet-shaped metal pigments 44 on the embossed relief structure, wherein the colorant 42 and the metal pigments 44 spatially separated from each other as described above according to the local surface geometry of the sections 22, 24. Subsequently, the security element 12 is typically subjected to further processing steps in which, for example, recesses are produced in the printing layer 40 and / or further functional, protective or adhesive layers are applied.
  • the finished security element can be glued to a data carrier such as the banknote shown in FIG. 1 or also partially embedded in a data carrier. It should be noted in the exemplary embodiment that the application or introduction takes place in such a way that the finished security element 12 is aligned with viewing from the side of the embossing lacquer layer, that is to say the underside of the illustration in FIG. 2.
  • the carrier film, on which the layer structure of the security element is built up in the production, can also be removed again after being transferred to a target substrate.
  • FIG. 3 shows an exemplary embodiment of a banknote 60 with a window region 62, above which a security element 64 according to the invention is arranged.
  • the security element 64 is fundamentally constructed like the security element 12 of FIG. 2, but additionally contains see-through areas 66 which are formed by recesses in the color layer 40.
  • the security element 64 includes a transparent embossing lacquer layer 20, which has two partial areas 22, 24 with relief structures of different surface geometry in a feature area.
  • a printing layer 40 is provided which, in addition to a translucent, for example red, colorant, also contains a multiplicity of platelet-shaped metal pigments.
  • the color layer 40 of the security element 64 is additionally provided with patterned recesses 66.
  • the security element 64 is transparent so that in the transmitted light the pattern formed by the recesses becomes visible.
  • the recesses 66 can be produced, for example, by printing only by area-wise printing of the ink layer 40, or else by local application of laser to a print layer which is initially applied over the entire surface.
  • FIG. 1 Another more complex embodiment of the invention is shown in FIG.
  • a banknote 70 in a window area 72 is provided with a security element 74 according to the invention.
  • the security element 74 is fundamentally constructed like the security element 64 of FIG. 3, but additionally contains a second embossing lacquer layer 80 and a second pressure layer 82 with recesses 84.
  • the security element 74 contains a first transparent embossing lacquer layer 20, which has two partial areas 22, 24 with relief structures of different surface geometry in a feature area.
  • a first printing layer 40 is provided which, in addition to a translucent, for example red, colorant, also contains a multiplicity of platelet-shaped metal pigments. Due to the interaction between see the metal pigments and the colorant on the one hand and the surface geometry of the relief structures on the other hand, an intense red metallic color impression in the partial region 22 and a weakly reddish, strongly metallic color effect in the partial area 24. The red or reddish Color impression is visible in the recesses 84 of the second printing layer 82.
  • the security element 74 contains a second transparent embossing lacquer layer 80, which has two partial areas 86, 88 with relief structures of different surface geometry in a feature area.
  • a second printing layer 82 is provided, which contains not only a translucent, for example blue colorant, but also a multiplicity of platelet-shaped metal pigments. The interaction between the metal pigments and the colorant on the one hand and the surface geometry of the relief structures of the partial areas 86, 88 on the other hand produces an intense blue-metallic color impression in the partial area 86 and a slightly bluish, strongly metallic color impression in the partial area 88.
  • the second pressure layer 82 of the security element 74 is provided with pattern-shaped recesses 84. In the area of the recesses 84, the intense red or slightly reddish color impression of the layers 20, 40 is visible. The areas in which the recesses 84 lie above the recesses 66 of the first color layer 40 form see-through areas in which the security element 74 is completely transparent.

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Abstract

L'invention concerne un élément de sécurité (12) permettant de protéger des papiers de sécurité, documents de valeur et autres supports de données, comportant une zone caractéristique colorée (14) présentant différentes couleurs. Selon l'invention, la zone caractéristique (14) comprend au moins deux zones partielles (22, 24) munies de structures en relief (32, 34) présentant une géométrie de surface différente, la zone caractéristique (14) est munie d'encre d'impression de couleurs (40) qui contient un colorant (42) et une pluralité de pigments à effet (44) en forme de plaquettes, les pigments à effet (44) en forme de plaquettes sont orientés et/ou espacés différemment dans les deux zones partielles (22, 24) du fait de la géométrie de surface différente des structures en relief (32, 34), et l'encre d'impression (40) produit ainsi des impressions en couleurs différentes dans les deux zones partielles.
PCT/EP2018/000175 2017-04-12 2018-04-09 Élément de sécurité comportant une zone caractéristique colorée, support de données et procédé de fabrication d'un élément de sécurité WO2018188784A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18720512.5A EP3609717B1 (fr) 2017-04-12 2018-04-09 Élément de sécurité comportant une zone caractéristique colorée

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017003603.9 2017-04-12
DE102017003603.9A DE102017003603A1 (de) 2017-04-12 2017-04-12 Sicherheitselement mit farbigem Merkmalsbereich

Publications (1)

Publication Number Publication Date
WO2018188784A1 true WO2018188784A1 (fr) 2018-10-18

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PCT/EP2018/000175 WO2018188784A1 (fr) 2017-04-12 2018-04-09 Élément de sécurité comportant une zone caractéristique colorée, support de données et procédé de fabrication d'un élément de sécurité

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EP (1) EP3609717B1 (fr)
DE (1) DE102017003603A1 (fr)
WO (1) WO2018188784A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022053828A1 (fr) * 2020-09-11 2022-03-17 De La Rue International Limited Dispositifs de sécurité et leurs procédés de fabrication
EP4088945A1 (fr) * 2021-05-10 2022-11-16 Giesecke+Devrient Currency Technology GmbH Élément de sécurité pourvu de hologramme de volume et d'effets supplémentaires

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
WO2020219878A1 (fr) * 2019-04-26 2020-10-29 Viavi Solutions Inc. Dispositif optique à paillettes magnétiques et substrat structuré

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