EP3468811B1 - Élément de sécurité, substrat de document de valeur, document de valeur équipé de ce dernier et procédé de fabrication - Google Patents

Élément de sécurité, substrat de document de valeur, document de valeur équipé de ce dernier et procédé de fabrication Download PDF

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Publication number
EP3468811B1
EP3468811B1 EP17728445.2A EP17728445A EP3468811B1 EP 3468811 B1 EP3468811 B1 EP 3468811B1 EP 17728445 A EP17728445 A EP 17728445A EP 3468811 B1 EP3468811 B1 EP 3468811B1
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EP
European Patent Office
Prior art keywords
substrate
embossing
pigments
substrate region
printing
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
EP17728445.2A
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German (de)
English (en)
Other versions
EP3468811A1 (fr
Inventor
Patrick Renner
Andreas Rauch
Björn Teufel
Manfred Heim
Winfried Hoffmuller
Giselher Dorff
Christian Fuhse
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 EP3468811A1 publication Critical patent/EP3468811A1/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
    • B42D25/24—Passports
    • 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
    • B42D25/324—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
    • B42D25/355—Security threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/373—Metallic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing

Definitions

  • the invention relates to a method for producing a value document substrate.
  • Documents of value such as banknotes, branded items or identification documents
  • security elements for security purposes, which allow the authenticity of the documents of value to be checked and which at the same time serve as protection against unauthorized reproduction.
  • Security elements with effects that depend on the viewing angle play a special role in securing authenticity, as these cannot be reproduced even with the most modern copiers.
  • the security elements are equipped with optically variable elements that give the viewer a different image impression from different viewing angles and, for example, show a different color or brightness impression and/or a different graphic motif depending on the viewing angle.
  • the color shift effect is based on viewing-angle-dependent interference effects due to multiple reflections in the various sub-layers of the element.
  • the path difference of the light reflected from the different layers depends on the one hand on the optical thickness of a dielectric spacer layer, which defines the distance between a semitransparent absorber layer and a reflection layer, and on the other hand varies with the respective viewing angle.
  • the WO 2008/061930 A1 describes a method for forming an optically variable image on a substrate comprising applying a curable compound or composition to at least a portion of the substrate; contacting at least a portion of the curable composition with means for generating an optically variable image; curing the curable compound; and optionally depositing a metallic paint onto at least a portion of the cured composition, wherein the means for generating the optically variable image comprises: a transparent support; a transparent material bearing an optically variable image to be applied thereto; and means to dry or cure a paint.
  • the U.S. 2013/0003150 A1 describes a security element which can be incorporated into a security document or applied to a security document, comprising: at least a first optical structure which comprises a raster image representing a first pattern; at least a second optical structure that is achromatic and presents a second pattern that is at least partially identical to the first pattern.
  • the dots of the raster image are obtained by perforating, depositing and/or cavities of materials chosen from: metals, metal compounds, alloys, metal paints or metal paints.
  • the WO 2011/066990 A2 describes a security element for a security paper, document of value or the like, with a carrier that has a surface area that is divided into a large number of pixels, each of which comprises at least one optically effective facet, the plurality of pixels each having a plurality of the optically effective facets with the same orientation per pixel and the facets are oriented in such a way that the surface area can be perceived by a viewer as a surface projecting and/or receding in relation to its actual three-dimensional shape.
  • a production method of a security element for security papers, documents of value or the like in which the surface of a carrier is height-modulated in a surface area in such a way that the surface area is divided into a large number of pixels each having at least one optically effective facet, the majority of Each pixel has a plurality of optically effective facets with the same orientation per pixel and the facets are oriented in such a way that a viewer of the security element produced can perceive the surface area as a surface projecting and/or receding in relation to its actual three-dimensional shape.
  • an embossing tool with an embossing surface is described, with which the shape of the facets of a security element can be embossed into the carrier.
  • the invention is based on the object of specifying a simplified method for producing a value-document substrate with high security against forgery and an attractive visual appearance.
  • a further object is to provide a value document substrate with a high degree of security against forgery and an attractive visual appearance.
  • the dimensions of the structural elements of the diffractive structure are preferably in the order of the light wavelength, more preferably in a range that is greater than 100 nm and less than 1 ⁇ m, with a range greater than 300 nm and less than 1 ⁇ m is particularly preferred.
  • the dimensions of the structural elements of the micromirror arrangement are preferably in a range that is greater than 1 ⁇ m and less than 40 ⁇ m, with a range greater than 1 ⁇ m and less than 30 ⁇ m being particularly preferred.
  • the dimensions of the structural elements of the micromirror arrangement have, for example, a height of up to 15 ⁇ m and a lateral extent of up to 30 ⁇ m.
  • tactile substrate embossings can preferably also be produced, for example by intaglio printing. Furthermore, it is preferred that both the tactile substrate embossings and the relief structures forming a micromirror arrangement or a diffractive structure are produced in one operation.
  • the wording "produced in one operation" is to be understood in such a way that all embossing structures to be introduced into the substrate, i.e. tactile substrate embossing and micro-optical structures such as micromirror arrays and/or relief structures forming diffractive structures, are formed in a single embossing tool, e.g. an intaglio printing plate or a (intaglio -) Pressure cylinder or steel pressure cylinder, which is used in the production.
  • banknote namely a polymer banknote or a foil composite banknote.
  • a value document substrate is produced by printing.
  • step b1) can take place before step b2), or vice versa.
  • the pigments used are so small that they Adapt relief structures very well
  • carrying out the embossing step b2) before the step of printing the substrate with the pigments b1) is preferred. If larger pigments are used, preference is given to carrying out the step of printing the substrate with the pigments b1) before the embossing step b2).
  • the relief structure forming a diffractive structure is in particular a hologram structure.
  • the dimensions of the structural elements of the diffractive structure are preferably in the order of magnitude of the light wavelength, more preferably in a range greater than 100 nm and less than 1 ⁇ m, with a range greater than 300 nm and less than 1 ⁇ m being particularly preferred.
  • the relief structure forming a micromirror arrangement is also referred to herein as a micro-optical relief structure.
  • the production of a micro-optical relief structure is known in the prior art (see, for example, WO 2014/060089 A2 ).
  • the dimensions of the structural elements of the micromirror arrangement are preferably in a range that is greater than 1 ⁇ m and less than 40 ⁇ m, with a range greater than 1 ⁇ m and less than 30 ⁇ m being particularly preferred.
  • the dimensions of the structural elements of the micromirror arrangement have, for example, a height of up to 15 ⁇ m and a lateral extent of up to 30 ⁇ m. In this case, both the height and the lateral extent of the structural elements of the micromirror arrangement are preferably greater than 1 ⁇ m.
  • Suitable platelet-shaped metal pigments for producing a reflective layer obtainable by printing are, for example, from WO 2013/186167 A2 , the WO 2010/069823 A1 , the WO 2005/051675 A2 (See, for example, the description on page 11, line 10, to page 12, penultimate paragraph) and the WO 2011/064162 A2 known.
  • the platelet-shaped metal pigments described therein have the advantage that they adapt so well to a substrate with a relief structure, in particular a relief with microstructures and/or nanostructures, that the difference to a conventional metallization obtainable by vapor deposition is almost no longer discernible.
  • the simple, printing-technical production of the reflective layer makes it possible to dispense with complex process steps, such as printing the carrier with a soluble wash ink in the form of a desired recess within the reflective layer to be produced, creating a metallization by vapor deposition and washing off the wash ink together with the one above metallization applied to the wash color.
  • the printing ink which can be used according to the invention and is based on platelet-shaped metal pigments for producing a reflective layer which can be obtained by printing is preferably based on the WO 2005/051675 A2 (See, for example, the description therein on page 11, line 10 to page 12, penultimate paragraph).
  • the pigments are based on a metal that is preferably selected from the group consisting of aluminum, stainless steel, nichrome, gold, silver, platinum and copper.
  • the metal is particularly preferably aluminum, the mean particle diameter preferably being in a range from 2 to 50 ⁇ m, more preferably in a range from 5 to 15 ⁇ m, measured with a Coulter LS130 laser diffraction granulometer.
  • Such an ink enables a "silver" mirror layer to be provided.
  • the metal pigment compositions can be colored (eg yellow).
  • the effect pigments that can be used according to the invention which assume a different hue depending on the viewing angle, have in particular an interference layer structure which typically comprises a reflection layer, a partially transparent layer or absorber layer and one or more dielectric spacer layers lying in between.
  • the dielectric spacer layers are based, for example, on mica, on SiO 2 or on Al 2 O 3 .
  • Such interference layers are referred to as single or multi-layer according to the number of dielectric layers.
  • Printing inks with pigments of such thin-film interference layers are marketed, for example, under the name Iriodin® (single-layer) or Colorcrypt® (multi-layer) by Merck KGaA.
  • OVI® optical variable ink
  • a special case are magnetically orientable OVI pigments, which are aligned in a preferred direction by means of a magnetic field during or after the printing of the substrate.
  • the effect pigments that can be used according to the invention can also be based on the WO 2011/064162 A2 described effect pigment compositions based with color shift effect.
  • the pigments have a longest dimension of edge length end-to-end in a range of 15 nm to 1000 nm and are based on a transition metal selected from the group consisting of Cu, Ag, Au, Zn , CD, Ti, Cr, Mn, Fe, Co, Ni, Ru, Rh, Pd, Os, Ir and Pt is selected.
  • the transition metal is preferably Ag.
  • the aspect ratio i.e. the ratio of the longest end-to-end dimension to the thickness
  • the ratio of binder to metal pigment is preferably below 10: 1, especially below 5:1.
  • the color when viewed in transmission and the color when viewed in reflection of the print layer can be adjusted (e.g. blue in transmission and silver, gold, bronze, copper or violet in reflection; also violet, magenta, pink, green or brown in transmission and various colors in reflection depending on the choice of pigment/binder ratio).
  • Colors with a gold/blue color change between reflection and transmission are, for example, in Examples 1, 2 and 3 in Table 1 of WO 2011/064162 A2 called.
  • example 4 shows a gold/violet color change color, example 5 a green-gold/magenta color change color, example 7 a violet/green color change color and example 8 a silver/opaque color change color.
  • the micro-optical structures are based on a relief structure forming a micromirror arrangement and/or on a relief structure forming a diffractive structure.
  • the intaglio printing plate can preferably carry other chromatic colors, i.e. provide color, with the areas that are intended to reproduce the holographic structures not providing color.
  • other chromatic colors i.e. provide color
  • an overlap is ideal due to the higher security against forgery due to the perfect register situation.
  • a register-accurate combination of steel embossing and hologram embossing can be ensured in this way in an advantageous manner. Furthermore, an increase in cost efficiency is possible because lower material costs arise and a more efficient manufacturing process is brought about. Fewer operations lead to less scrap and less set-up times. Furthermore, a very thin embossing lacquer layer thickness can be achieved since the substrate can be embossed at the same time. As a result, better mechanical resistances are achieved.
  • a preferred steel printing cylinder according to a variant A comprises one or more areas with a micro-optical embossing and one or more areas for tactile substrate embossing (which are coloring and/or non-coloring).
  • the area with a micro-optical embossing is particularly suitable for the production of lens structures, micro-mirror arrangements and/or holograms or hologram-like structures.
  • the substrate has an embossing varnish, e.g. a thermoplastic, which can be present partially or optionally over the entire surface.
  • embossing varnish e.g. a thermoplastic
  • the embossing varnish is a transparent, UV-curable system that is cured at the moment of embossing or immediately after embossing. In this case, exposure can take place through the substrate.
  • the embossing varnish can already contain metal pigments or be overprinted with a metal-pigmented ink afterwards.
  • a leafing UV-curable system should be particularly advantageous for a paint that has already been provided with metal pigments, since the leafing pigments float to the top and the embossing can thus be optimally molded into the pigments.
  • Providing the substrate with a primer layer, possibly with a UV primer, is optional.
  • a preferred steel printing cylinder according to variant A with leafing ink comprises one or more areas with a micro-optical embossing and one or more areas for tactile substrate embossing (which are inking and/or non-inking).
  • the area with a micro-optical embossing is particularly suitable for the production of lens structures, micro-mirror arrangements and/or holograms or hologram-like structures.
  • the substrate has an embossing varnish, for example a thermoplastic, which can be present partially or optionally over the entire surface, and has leafing pigments.
  • embossing varnish for example a thermoplastic, which can be present partially or optionally over the entire surface, and has leafing pigments.
  • a leafing UV-curable system should be particularly advantageous for a paint that has already been provided with metal pigments, since the leafing pigments float to the top and the embossing can thus be optimally molded into the flexible pigments.
  • the lacquer has not yet hardened. An exposure preferably takes place directly with the embossing through the substrate.
  • a preferred steel printing cylinder according to a variant B comprises one or more areas with a micro-optical embossing and one or more areas for tactile substrate embossing (which are coloring and/or non-coloring).
  • the area with a micro-optical embossing is particularly suitable for the production of lens structures, micro-mirror arrangements and/or holograms or hologram-like structures.
  • the areas with micro-optical embossing in the steel printing cylinder have an embossing varnish, e.g. a thermoplastic. If necessary, the embossing varnish can also be present in the areas formed in the steel printing cylinder for tactile substrate embossing.
  • embossing varnish e.g. a thermoplastic. If necessary, the embossing varnish can also be present in the areas formed in the steel printing cylinder for tactile substrate embossing.
  • the embossing varnish is a transparent, UV-curable system that is cured at the moment of embossing or immediately after embossing.
  • the embossing varnish can also be oil-based or dual-cure.
  • the embossing varnish can be processed by steel printing. In this case, exposure can take place through the substrate.
  • the embossing varnish can already be provided with metal pigments or with one afterwards metal-pigmented ink can be overprinted. Providing the substrate with a primer layer, possibly with a UV primer, is optional.
  • a preferred steel printing cylinder according to a variant “A+B” comprises one or more areas with a micro-optical embossing and one or more areas for tactile substrate embossing (which are coloring and/or non-coloring).
  • the area with a micro-optical embossing is particularly suitable for the production of lens structures, micro-mirror arrangements and/or holograms or hologram-like structures.
  • the substrate has an embossing varnish, e.g. a thermoplastic, which can be present partially or optionally over the entire surface.
  • embossing varnish e.g. a thermoplastic
  • the areas in the steel printing cylinder with micro-optical embossing have an embossing varnish, e.g. a thermoplastic. If necessary, the embossing varnish can also be present in the areas formed in the steel printing cylinder for tactile substrate embossing.
  • the embossing varnish present on the substrate e.g. a thermoplastic
  • the substrate e.g. a thermoplastic
  • the substrate is partially pre-impregnated in the area of the micro-optical structures and higher layer thicknesses can be realized.
  • the embossing varnish is a transparent, UV-curable system that is cured at the moment of embossing or immediately after embossing. In this case, an exposure can be carried out through the substrate take place.
  • the embossing varnish can already contain metal pigments or be overprinted with a metal-pigmented ink afterwards.
  • a leafing UV-curable system should be particularly advantageous for a paint that has already been provided with metal pigments, since the leafing pigments float to the top and the embossing can thus be optimally molded into the pigments.
  • Providing the substrate with a primer layer, possibly with a UV primer, is optional.
  • Variant "A + B” corresponds to a two-layer embossing lacquer system.
  • the first lacquer layer is optimized for the substrate, is applied to the substrate and may already have hardened or gelled at the moment of embossing. As a result, it is already perfectly anchored to the substrate and the substrate is partially pre-impregnated in the area of the fine holographic structures for the following layer of paint.
  • the lacquer on the embossing tool in particular the intaglio printing plate, can now be processed using the so-called casting process. It can no longer bounce away and anchors perfectly with the first coat.
  • the variant "A + B” enables higher line speeds due to the higher optical quality (especially less bubble formation). Furthermore, deeper micro-optical structures can be realized.
  • non-leafing pigments are PVD aluminum flakes whose surface is untreated or polar.
  • leafing pigments the polar or oxidized pigment surface is reversed with long-chain alkyl phosphonic acids or mono-/diphosphoric acid esters and long-chain alkoxysilanes, i.e. made non-polar (roughly comparable to the effect of surfactants, the polar part is anchored on the pigment surface either covalently or via acid -Base interaction).
  • the pigments can optimally spread due to the platelet structure that is as perfect as possible orient (i.e. align the mirrors).
  • leafing pigments are preferably as thin as possible, while non-leafing pigments are preferably to be chosen thicker. As a rule, the pigments have a D50 of 10 ⁇ m, the thickness is in the nanometer range.
  • the micro-optical embossing can be overprinted after application with a solvent-based ink, preferably with non-leafing pigments.
  • the embossing varnish that has already been applied to the substrate can be equipped with perfect non-leafing pigments or perfect leafing pigments. What is ultimately important here is a mirror that is as perfect as possible.
  • embossing varnish portion on the embossing tool with a very highly pigmented embossing varnish (especially non-leafing), ie varnish with a very high pigment content, so that it is practically impossible to distinguish between non-leafing and leafing.
  • embossing varnish is contributed via the substrate for the embossing structures.
  • figure 8 shows a schematic representation of a bank note 14 with a transparent window area 16 (shown in broken lines) which is provided with a security element 15 in the form of a patch or label.
  • the banknote 14 can, for example, be based on a (e.g. transparent) plastic substrate, with the banknote having no printing ink in area 16 either on the front or on the back, so that area 16 is recognizable to the viewer as a transparent window area.
  • the bank note 14 can alternatively be based on a foil/paper/foil composite substrate, with the central paper layer having a recess (in particular filled with transparent adhesive or filler) in the area 16 .
  • Film / paper / film composite substrates are from WO 2004/028825 A2 known.
  • the banknote 14 is based on a paper/foil/paper composite substrate, with the outer paper layers each having a recess in the region 16 (see, for example, WO 2006/066431 A1 ).
  • the bank note 14 is based on a paper substrate which has a continuous recess in the area 16 .
  • the continuous recess is covered by a transparent film on at least one side of the paper substrate (see, for example, WO 2011/015622 A1 ).
  • the security element 15 shown contains a central, color-shifting motif 17 formed by a micromirror arrangement, which is surrounded by a motif 16 formed by a hologram.
  • figure 9 shows a schematic representation of another, on a
  • Paper substrate based banknote 18 which does not fall under the scope of the claims and which is provided on its front side with a security element in the form of a strip 19 (shown in phantom) is provided.
  • the strip 19 has a width of 8 mm and has a colour-shifting motif 21 formed by a micromirror arrangement and a motif 20 formed by a hologram.
  • figure 7 shows that in the figure 9 illustrated security element 19 in a cross-sectional view along the dashed line AA'.
  • the embossable lacquer 7 is, for example, a UV-curing lacquer or a thermoplastic lacquer.
  • the surface of the embossable lacquer 7 is provided by embossing in the partial area 8 with a relief structure formed by a microstructure and in the partial area 9 with a relief structure formed by a nanostructure.
  • the printing ink is based on platelet-shaped metal pigments (in particular Al pigments) and leads to the production of a reflection layer 11, in the present case a "silver" mirror layer.
  • the embossing lacquer 7 is printed in the partial area 8 with effect pigments, which assume a different shade depending on the viewing angle, in this example OVI ® color.
  • the layer 10 with the color shift effect is obtained by printing.
  • the layer structure obtained is provided with a (eg transparent) intermediate layer or primer layer 12 (eg a UV lacquer) and a heat-sealing lacquer 13 suitable for gluing the security element to a value-document substrate.
  • FIG. 4 to 7 describes the manufacture of a security element in the form of a strip (see reference number 19 in figure 9 ).
  • the Indian figure 9 The security strip 19 shown has a color-shifting motif 21 formed by a micromirror arrangement and a motif 20 formed by a hologram.
  • the motif 21 formed by a micromirror arrangement corresponds to that in FIG figure 6 area indicated by reference numeral 10.
  • the motif 20 formed by a hologram corresponds to that in FIG figure 6 area indicated by reference numeral 11.
  • the security element shown may alternatively be in the form of a patch or label (see, for example, the patch denoted by reference number 15 in figure 8 ).
  • the embossing step takes place first (see figure 5 ), after which the embossed areas are printed with pigments (see figure 6 ).
  • the step of printing with pigments takes place first and then the step of embossing.
  • Figures 1 to 3 describe an example for the production of a value document substrate, in the present case a security paper suitable for the production of banknotes and not falling under the scope of protection of the claims.
  • a paper substrate 1 is provided.
  • the surface of the paper substrate 1 is provided by means of blind embossing using an intaglio printing device in partial area 2 with a relief structure formed by a microstructure and in partial area 3 with a relief structure formed by a nanostructure.
  • the embossed paper substrate 1 in portion 3 with the from WO 2005/051675 A2 known ink printed.
  • the printing ink is based on platelet-shaped metal pigments (in particular Al pigments) and leads to the production of a reflection layer 5, in the present case a "silver" mirror layer.
  • the embossed paper substrate 1 is printed in the partial area 2 with effect pigments, which assume a different shade depending on the viewing angle, in the present example OVI® color. In this way, layer 4 with a color shift effect is obtained by printing.
  • the first step is to emboss the paper substrate (see figure 2 ), after which the embossed areas of the paper substrate are printed with pigments (see figure 3 ).
  • the step of printing the paper substrate with pigments and then the step of embossing the paper substrate.

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  • Accounting & Taxation (AREA)
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  • Manufacturing & Machinery (AREA)
  • Credit Cards Or The Like (AREA)
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Claims (4)

  1. Procédé de fabrication d'un substrat pour documents de valeur adapté à un billet de banque (14, 18), à savoir un billet de banque en polymère ou un billet de banque en film composite, comprenant
    a) la mise à disposition d'un substrat (1), à savoir un substrat en matière plastique ou un substrat en film/papier/film composite ;
    b1) l'impression du substrat (1) avec des piments métalliques en forme de paillettes adaptés à la constitution d'une couche réfléchissante (4, 5) dans une première zone du substrat, et l'impression du substrat avec des piments à effets qui, selon l'angle d'observation, adoptent une teinte différente, dans une deuxième zone du substrat ;
    b2) l'étape du gaufrage de la première zone du substrat et de la deuxième zone du substrat, de telle sorte (i) que le substrat (1) présente dans la première zone du substrat une structure en relief qui constitue une structure diffractive et le substrat (1) présente dans la deuxième zone du substrat une structure en relief qui constitue un agencement de micro-miroirs, ou (ii) le substrat (1) présente dans la première zone du substrat une structure en relief qui constitue un agencement de micro-miroirs et le substrat (1) présente dans la deuxième zone du substrat une structure en relief qui constitue une structure diffractive.
  2. Procédé selon la revendication 1, cependant que l'étape (b1) est effectuée avant l'étape b2), cependant que, à l'étape (b2), tant les piments métalliques en forme de paillettes adaptés à la constitution d'une couche réfléchissante (4, 5) dans la première zone du substrat que les piments à effets adoptant une teinte différente selon l'angle d'observation dans la deuxième zone du substrat s'adaptent à la structure en relief du substrat (1) dans la zone respective du substrat.
  3. Procédé selon une la revendication 1, cependant que l'étape (b2) est effectuée avant l'étape b1), cependant que, à l'étape (b1), tant les piments métalliques en forme de paillettes adaptés à la constitution d'une couche réfléchissante (4, 5) dans la première zone du substrat que les piments à effets adoptant une teinte différente selon l'angle d'observation dans la deuxième zone du substrat s'adaptent à la structure en relief du substrat (1) dans la zone respective du substrat.
  4. Procédé selon une des revendications de 1 à 3, cependant que l'étape du gaufrage (b2) a lieu par impression à sec, de préférence par un dispositif d'impression en creux par gravure.
EP17728445.2A 2016-06-08 2017-06-06 Élément de sécurité, substrat de document de valeur, document de valeur équipé de ce dernier et procédé de fabrication Active EP3468811B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016007064.1A DE102016007064A1 (de) 2016-06-08 2016-06-08 Sicherheitselement, Wertdokumentsubstrat, mit demselben ausgestattetes Wertdokument und Herstellungsverfahren
PCT/EP2017/000652 WO2017211450A1 (fr) 2016-06-08 2017-06-06 Élément de sécurité, substrat de document de valeur, document de valeur équipé de ce dernier et procédé de fabrication

Publications (2)

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EP3468811A1 EP3468811A1 (fr) 2019-04-17
EP3468811B1 true EP3468811B1 (fr) 2022-10-12

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EP17728445.2A Active EP3468811B1 (fr) 2016-06-08 2017-06-06 Élément de sécurité, substrat de document de valeur, document de valeur équipé de ce dernier et procédé de fabrication

Country Status (4)

Country Link
EP (1) EP3468811B1 (fr)
AU (1) AU2017276507B9 (fr)
DE (1) DE102016007064A1 (fr)
WO (1) WO2017211450A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI844619B (zh) 2019-02-28 2024-06-11 瑞士商西克帕控股有限公司 利用可攜式裝置來認證磁感應標記之方法
CN111746171B (zh) * 2019-03-29 2021-06-15 中钞特种防伪科技有限公司 光学防伪元件及其制作方法
EP3766702A1 (fr) * 2019-07-15 2021-01-20 Giesecke+Devrient Currency Technology GmbH Élément de sécurité et son procédé de fabrication
DE102020007028A1 (de) 2020-11-17 2022-05-19 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement, mit demselben ausgestattetes Wertdokument und Herstellungsverfahren

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10243653A1 (de) 2002-09-19 2004-04-01 Giesecke & Devrient Gmbh Sicherheitspapier
GB0326576D0 (en) 2003-11-14 2003-12-17 Printetch Ltd Printing composition
EP1827823B1 (fr) 2004-12-23 2010-01-13 Landqart Structure multicouche servant de substrat d'impression et procede de fabrication
BRPI0719110A2 (pt) * 2006-11-21 2013-12-10 Ciba Holding Inc Aparelho e método para fabricação de um produto de segurança
DE102007061828A1 (de) 2007-12-20 2009-06-25 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
US20120029121A1 (en) 2008-12-19 2012-02-02 Basf Se Thin aluminium flakes
DE102009036314A1 (de) 2009-08-06 2011-02-10 Giesecke & Devrient Gmbh Verfahren zur Herstellung eines Sicherheitselements und nach dem Verfahren erhältliches Sicherheitselement
CN102639651B (zh) 2009-11-27 2016-03-16 巴斯夫欧洲公司 用于加密元件和全息图的涂料组合物
DE102009056934A1 (de) * 2009-12-04 2011-06-09 Giesecke & Devrient Gmbh Sicherheitselement, Wertdokument mit einem solchen Sicherheitselement sowie Herstellungsverfahren eines Sicherheitselementes
FR2953965B1 (fr) * 2009-12-14 2011-11-25 Arjowiggins Security Element de securite comportant une structure optique
JP6203253B2 (ja) 2012-06-14 2017-09-27 ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ セキュリティエレメント及びホログラムの製造方法
DE102012020257A1 (de) 2012-10-16 2014-04-17 Giesecke & Devrient Gmbh Optisch variables Flächenmuster

Also Published As

Publication number Publication date
WO2017211450A1 (fr) 2017-12-14
AU2017276507B2 (en) 2021-10-14
AU2017276507B9 (en) 2022-02-24
AU2017276507A1 (en) 2019-01-17
DE102016007064A1 (de) 2017-12-14
EP3468811A1 (fr) 2019-04-17

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