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EP3271191B2 - Élément de sécurité - Google Patents
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EP3271191B2 - Élément de sécurité - Google Patents

Élément de sécurité

Info

Publication number
EP3271191B2
EP3271191B2 EP16710097.3A EP16710097A EP3271191B2 EP 3271191 B2 EP3271191 B2 EP 3271191B2 EP 16710097 A EP16710097 A EP 16710097A EP 3271191 B2 EP3271191 B2 EP 3271191B2
Authority
EP
European Patent Office
Prior art keywords
layer
contrast
security element
absorber
carrier material
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
EP16710097.3A
Other languages
German (de)
English (en)
Other versions
EP3271191A1 (fr
EP3271191B1 (fr
Inventor
Gianluca Messa
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
Original Assignee
Giesecke and 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=55538171&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3271191(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Giesecke and Devrient Currency Technology GmbH filed Critical Giesecke and Devrient Currency Technology GmbH
Publication of EP3271191A1 publication Critical patent/EP3271191A1/fr
Application granted granted Critical
Publication of EP3271191B1 publication Critical patent/EP3271191B1/fr
Publication of EP3271191B2 publication Critical patent/EP3271191B2/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/23—Identity cards
    • 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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers

Definitions

  • the invention relates to a security element, a method for manufacturing a security element, and a security document with a security element.
  • Valuable documents within the meaning of the invention include, among others, banknotes, shares, bonds, certificates, vouchers, checks, airline tickets, high-quality admission tickets, product security labels, credit or debit cards, but also other documents susceptible to forgery, such as passports, identity cards or other identification documents.
  • Valuable documents are typically made from paper substrates, polymer substrates, or combinations of paper and polymer, incorporating special security features such as a security thread embedded at least partially in the paper or a watermark. Additional security features can include so-called window films, security threads, or security tapes, which can be affixed, laminated, or embedded onto the document.
  • Security elements usually consist of a polymer or polymer compositions as the substrate or base material. Typically, security elements feature optically variable security characteristics such as holograms or specific color-shifting effects to enhance counterfeit protection. The particular advantage of optically variable security elements is that their security features cannot be replicated simply by copying them with photocopiers, as the effects of an optically variable security feature are lost or even appear black during copying.
  • integrating negative patterns into an area with a color-shifting effect requires that the layers of the thin-film element responsible for the color-shifting effect be at least partially removed at the points where the negative patterns are to be applied.
  • the spacer layer of a thin-film element is formed by a film.
  • the thin-film element can be arranged over a hologram.
  • DE 10 2008 013 167 A1 shows a thin-film element over a partially metallized relief structure.
  • a first aspect of the invention relates to a safety element comprising: a substrate material having a first and a second main surface facing each other; an absorber layer, a dielectric layer, and a semi-reflective layer arranged on the first main surface; wherein the dielectric layer is arranged between the absorber layer and the semi-reflective layer, and the absorber layer is arranged between the dielectric layer and the substrate material; and a contrast layer located closest to the absorber layer, starting from the semi-reflective layer, the dielectric layer, and the absorber layer.
  • the layer sequence of the semi-reflective layer, the dielectric layer, and the absorber layer forms a thin-film structure with a color-shifting effect.
  • the substrate material is arranged between the contrast layer and the absorber layer.
  • the contrast layer is a layer of dark printing ink or a dark resist varnish.
  • the substrate material can have one or more areas to be coated, in which the absorber layer, the dielectric layer, and the partially reflective layer are arranged.
  • the substrate material is preferably a film-like material.
  • the at least one area to be coated is preferably arranged on a main surface of the substrate material. If the substrate material has several areas to be coated, these can be arranged on only one of the two main surfaces or on both main surfaces of the substrate material. In particular, an area to be coated can be a thin-film element area or a color-shift area.
  • the area of the substrate material to be coated can have various surface shapes.
  • the area to be coated can be rectangular, oval, star-shaped, or serpentine.
  • the shape and size of the area to be coated are preferably defined or determined in a process layer.
  • the area of the substrate material to be coated can have a surface structure and/or surface finish that differs from other areas of the substrate material.
  • the substrate material has an area that is defined as the area to be coated.
  • the absorber layer, the dielectric layer, and the semi-reflective layer are arranged or applied over the entire surface of the area to be coated.
  • the absorber layer, the dielectric layer, and the semi-reflective layer can
  • the safety element can be applied or vapor-deposited using physical vapor deposition.
  • the safety element can have a relief structure.
  • this relief structure can be provided on the first main surface of the carrier medium.
  • the relief structure can be provided by means of an embossed coating layer arranged on the first main surface of the carrier medium.
  • the relief structure can be provided in the dielectric layer, so that the dielectric layer does not have a constant thickness.
  • the security element can be designed as a so-called T-patch or T-lead, in which the carrier medium is removed before being applied to a document substrate.
  • the security element can be designed as a so-called L-patch or L-lead, in which the carrier medium is bonded to the document substrate. This means the carrier medium is not removed from the security element.
  • the layer sequence consisting of a partially reflective layer, a dielectric layer and an absorber layer, wherein the dielectric layer is arranged between the partially reflective layer and the absorber layer, forms a thin-film structure with a color-shifting effect or a thin-film element with a color-shifting effect.
  • the safety element has a protective layer that is arranged in the (entire) area to be coated.
  • the protective layer is arranged on/at the partially reflective layer.
  • the protective layer comprises a protective lacquer.
  • the protective layer comprises a heat-seal lacquer and/or a primer.
  • the carrier material comprises a carrier film.
  • the carrier material comprises polyethylene terephthalate (PET) and/or polypropylene (PP); a carrier material made of PET or PP is especially preferred.
  • a security element according to this invention can, in particular, comprise a film or a multilayer substrate, wherein the multilayer substrate can also comprise a combination of fabric substrates and films.
  • the security element can include a window area that serves to fill or bridge a hole in a valuable document or in the paper substrate of the valuable document.
  • a security window can be incorporated into a valuable document using the security element.
  • the area to be coated is located in the window area of the security element.
  • the security element can be applied to a valuable document, for example, by laminating or gluing.
  • the security element can be a security thread or tape, window thread, patch, or the like.
  • the thin-film element i.e., the partially reflective layer, the dielectric layer, and the absorber layer—can be made opaque in the areas with the contrast layer, while the thin-film element is semi-transparent in the areas without the contrast layer. Consequently, additional information can be incorporated into the security element very easily and quickly by structuring the contrast layer.
  • the contrast layer is a structured layer, i.e., a structured contrast layer.
  • a structured contrast layer is understood to mean that the contrast layer forms a pattern or motif which is visible to an observer when viewing the security element.
  • a structured contrast layer means, in particular, that the contrast layer is not uniformly or completely applied to/over the absorber layer or the substrate. Rather, due to the structured contrast layer, there are areas/sub-areas within the area to be coated where the contrast layer is omitted.
  • the structured contrast layer forms a predetermined motif or pattern, such as a character, a string of characters, and/or an image.
  • This motif or pattern determines the structure of the structured contrast layer.
  • the motif can, for example, be visible or recognizable to an observer when viewing the security element through the surface, looking in the direction of the principal surface normals or perpendicular to the first principal surface of the substrate material that contains the area to be coated.
  • the contrast layer is a layer of dark printing ink.
  • the contrast layer is... a layer of dark resist lacquer.
  • the structured contrast layer is arranged/applied in the form of a motif using printing techniques.
  • the structured contrast layer is applied using one or more rollers and/or cylinders.
  • the number of rollers can vary. Depending on their relative speed, the rollers/cylinders can transport varnish and/or ink.
  • the design is preferably applied or printed using a relief printing plate.
  • the structured contrast layer is applied using flexographic printing. Alternatively or additionally, the structured contrast layer is applied using gravure printing. Alternatively or additionally, the structured contrast layer is applied using inkjet printing. Alternatively or additionally, the structured contrast layer is applied using offset printing. Alternatively or additionally, the structured contrast layer is applied using screen printing.
  • the contrast layer preferably has a thickness of 1 ⁇ m to 15 ⁇ m, preferably 2 ⁇ m to 4 ⁇ m.
  • the thickness of the contrast layer is constant.
  • the safety element comprises an additional layer arranged between the absorber layer and the contrast layer.
  • the additional layer is a structured layer, i.e., an additional, structured layer, for example in the form of a pattern or motif.
  • the additional layer has a constant thickness.
  • the thickness of the additional layer is preferably in the range of 1 ⁇ m to 15 ⁇ m, more preferably in the range of 1 ⁇ m to 5 ⁇ m and/or 5 ⁇ m to 10 ⁇ m and/or 10 ⁇ m to 15 ⁇ m.
  • the additional layer preferably comprises a magnetic printing ink, a fluorescent print, or a machine-readable print.
  • the additional layer also preferably comprises infrared-visible and/or thermochromic printing inks.
  • the partially reflective layer has a layer thickness of 50 (5 nm) to 500 (50 nm) (Angstrom), preferably 100 ⁇ (10 nm) to 300 ⁇ (30 nm). Furthermore, the thickness of the partially reflective layer is preferably constant.
  • the partially reflective layer is a metallic layer, preferably made of aluminum or an aluminum alloy.
  • the absorber layer has a thickness of 30 ⁇ (0.3 nm) to 200 ⁇ (20 nm), preferably 50 ⁇ (5 nm) to 100 ⁇ (10 nm). Furthermore, preferably the thickness of the absorber layer is constant.
  • the absorber layer is a metallic layer, preferably made of chromium.
  • the dielectric layer has an optical thickness of two quarter wavelengths ( ⁇ /2) relative to a wavelength of 400 nm (2 Quarter Wave Optical Thickness, 2 QWOT) to nine quarter wavelengths (9 ⁇ /4) relative to a wavelength of 700 nm; more preferably, the layer thickness is between 2 QWOT (2 ⁇ /4) and 8 QWOT (8 ⁇ /4) relative to a wavelength between 400 nm and 700 nm.
  • the dielectric layer is transparent or translucent in the visible range.
  • the thickness of the dielectric layer is a constant thickness.
  • the safety element has a reflective layer that is arranged on the side of the contrast layer facing away from the absorber layer.
  • the reflective layer is a structured reflective layer.
  • the reflective layer and the contrast layer are identical or have essentially the same structure.
  • the reflective layer and the contrast layer have congruent areas that are free of both the reflective layer and the contrast layer.
  • the contrast layer is arranged between the absorber layer and the substrate material.
  • the contrast layer is arranged on the second main surface of the substrate material.
  • the procedure includes, in particular, suitable process steps to manufacture a safety element with one or more of the aspects or properties described above.
  • the contrast layer is a structured layer.
  • the contrast layer comprises a layer of dark printing ink.
  • the contrast layer comprises a layer of dark resist varnish.
  • Another aspect concerns a security document, in particular a banknote, with a security document substrate and at least one security element, which includes one or more of the aspects described above.
  • a security feature is preferably applied to or embedded in a document substrate.
  • a document substrate can be paper, polymer, or a paper-polymer combination.
  • the carrier material of the security feature can be a portion of the document substrate.
  • the document substrate can be a polymer film, and the carrier material of the security feature is a portion of this polymer film.
  • the top and bottom surfaces of the security element preferably run (essentially) parallel to the top and bottom surfaces of the security document substrate.
  • the top and bottom surfaces of the security document, as well as those of the security element, can also be referred to as primary surfaces. These primary surfaces convey relevant information to an observer. Consequently, the primary surfaces are visible to an observer viewing a security document containing a security element. For example, a primary surface of a banknote might display the banknote's value and its serial number.
  • the top and bottom surfaces of a security element like those of a security document, can also be considered the first and second primary surfaces.
  • FIGS 1a and 1b Each figure shows a schematic top view of a main surface of a security document 100 with a security document substrate 102 and a security element 104, wherein the security element 104 is firmly connected to the security document substrate 102, e.g., embedded in or applied to the security document substrate 102.
  • the security element 104 can also be a partial area of the security document substrate 102.
  • the security element 104 has an area defined as the area to be coated 106.
  • the area to be coated 106 is preferably a color-shift or thin-film element area comprising a partially reflective layer, an absorber layer, and a dielectric layer.
  • the area to be coated 106 has a contrast-layer-free area 108 and a contrast-layer area 110.
  • Figure 1a The contrast layer-free area 108a shows the number 45.
  • Figure 1b Figure 108b shows three stripes as a contrast-layer-free area.
  • a contrast-layer-free area can have any shape or configuration.
  • a contrast-layer-free area could be shaped like a church or an animal.
  • a contrast-layer-free area allows an observer to recognize the contrast-layer-free area from above and/or from behind.
  • the security element in the contrast-layer-free area is more transparent than in the contrast-layer area, or at least semi-transparent, so that at least some of the light incident on the security element is transmitted in the contrast-layer-free area.
  • the security element 104 comprises a carrier material, preferably made of polyethylene terephthalate (PET), and has an area 106 to be coated.
  • the contrast-layer area 110 which is a sub-area or part of the area 106 to be coated, comprises at least one partially reflective layer, one dielectric layer, and at least one absorber layer.
  • the contrast layer-free area 108 in contrast to the contrast layer area 110, has no contrast layer at all. Accordingly, it is clearly evident that the contrast layer is not present across the entire surface or uniformly in the area to be coated, 106, but only/exclusively in the contrast layer area 110. In other words, the contrast layer is a structured contrast layer.
  • FIG. 2 Figure 1 shows a sectional view of a safety element 200 with a substrate material 201.
  • the substrate material 201 has a first main surface HF1a and a second main surface HF2a.
  • An absorber layer 202 is arranged on the main surface HF1a of the substrate material.
  • a dielectric layer 203 is arranged on the absorber layer 202.
  • a partially reflective layer 204 is arranged on the dielectric layer 203.
  • a structured contrast layer 205 is arranged on the second main surface HF2a of the substrate material 201.
  • the structuring of the contrast layer 205 creates contrast-layer-free areas 206. In particular, the area 206 can be further enhanced by the structuring of the contrast layer 205.
  • Fig. 2 shown Sectional view of a section through the "4" along line II according to Fig. 1a or a part along line II-II according to Fig. 1b are equivalent to.
  • Fig. 3 shows a safety element 300, which has a (first) carrier material 301a with a first main surface HF1a and a second main surface HF2a.
  • This sectional view can, for example, be a part of a sectional view along line II, as in Fig. 1a shown, or along section line II-II according to Fig. 1b are equivalent to.
  • Fig. 3 Figure 300 shows a partially reflective layer 304, a dielectric layer 303, and an absorber layer 302. These three layers 304, 303, and 302 are arranged on the first main surface HF1a of the (first) substrate material 301a.
  • the security element 300 also has a second substrate material 301b, which has a first main surface HF1b.
  • a structured contrast layer 305 is arranged on the first main surface HF1b, resulting in contrast-layer-free areas 306. Furthermore, the security element 300 has an additional structured layer 308.
  • the additional structured layer 308 can, for example, be a layer of magnetic printing ink.
  • the security element 300 is formed by joining the (first) substrate material 301a and the (second) substrate material 301b. Preferably, the (first) carrier material 301a and the (second) carrier material 301b are joined together after the arrangement of layers 308 and 305.
  • the carrier materials 301a and 301b can be bonded together by an adhesive layer 307. This results in a structure in which the additional structured layer 308 and the structured contrast layer 305 are arranged on/at the second main surface HF2a of the (first) carrier material 301a.
  • FIG. 4 Figure 1 shows a sectional view of a safety element 400 with a substrate material 401a.
  • the (first) substrate material 401a has a first main surface HF1a and a second main surface HF2a.
  • a contrast layer 405, which can be a structured contrast layer with contrast-free areas 406, is arranged on or against the first main surface HF1a.
  • An additional structured layer 408 is arranged on or against the contrast layer 405.
  • An absorber layer 402, a dielectric layer 403, and a partially reflective layer 404 are arranged above or against the additional structured layer 408.
  • a (second) substrate material 401b is arranged on or above the partially reflective layer 404.
  • the first main surface HF1a of the (first) carrier material 401a can be coated with the contrast layer 405 and the additional layer 408.
  • the second main surface HF2b of the (second) carrier material 401b can be coated with layers 404, 403, and 402.
  • the second main surface HF2b of the (second) carrier material 401b and the first main surface HF1a of the (first) carrier material 401a can then be bonded together.
  • an adhesive layer 407 can be used for this purpose.
  • Figure 5 Figure 1 shows a schematic sectional view of a safety element 500 with a substrate material 501a.
  • the (first) substrate material 501a has a first main surface HF1a and a second main surface HF2a.
  • An absorber layer 502, a dielectric layer 503, and a partially reflective layer 504 are arranged on or attached to the first main surface HF1a.
  • An additional layer 508 and a contrast layer 505 are arranged on the second main surface HF2b of the (first) substrate material 501a.
  • a reflective layer 507 is arranged on the contrast layer 505. This reflective layer 507 can be produced by printing or vapor deposition.
  • a (second) substrate material 501b is arranged on the reflective layer 507.
  • the reflective layer 507 and the contrast layer 505 preferably have the same structure.
  • contrast layer-free areas 506 are also reflective layer-free areas.
  • the first main surface HF1a of the (first) carrier material 501a can be coated with layers 502, 503, and 504.
  • the first main surface HF2a of the (second) carrier material 501b can be coated with the additional layer 508, the contrast layer 505, and the reflective layer 507.
  • the first main surface HF1b of the (second) carrier material 501b and the second main surface HF2a of the (first) carrier material 501a can then be bonded together.
  • an adhesive layer 509 can be used for this purpose.
  • a viewer when viewing the safety elements 200, 300, 400 and 500 in reflected light, a viewer can perceive a homogeneous color shift effect in the area 106 to be coated, whereas, advantageously, when viewing in transmitted light, the viewer can perceive the contrast layer-free areas 206, 306, 406 and 506 in the form of patterns, symbols or motifs.

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Credit Cards Or The Like (AREA)

Claims (14)

  1. Élément de sécurité (200; 300; 500) comprenant :
    un matériau support (201; 301a; 501a) comportant une première et une deuxième face principale qui se font face ;
    une couche absorbante (202; 302; 502), une couche diélectrique (203; 303; 503) et une couche partiellement réfléchissante (204; 304; 504) agencée sur la première face principale ;
    cependant que la couche diélectrique (203; 303; 503) est agencée entre la couche absorbante (202; 302; 502) et la couche partiellement réfléchissante (204; 304; 504) et que la couche absorbante (202; 302; 502) est agencée entre la couche diélectrique (203; 303; 503) et le matériau support (201; 301a; 501a) ; et
    une couche de contraste (205; 305; 505) qui est la plus proche de la couche absorbante (202; 302; 502) en partant de la couche partiellement réfléchissante (204; 304; 504), de la couche diélectrique (203; 303; 503) et de la couche absorbante (202; 302; 502) ;
    cependant que le matériau support (201 ; 301a ; 501a) est agencé entre la couche de contraste (205 ; 305 ; 505) et la couche absorbante (202 ; 302 ; 502) ;
    cependant que la séquence de couches constituée de la couche partiellement réfléchissante (204 ; 304 ; 504), de la couche diélectrique (203 ; 303 ; 503) et de la couche absorbante (202 ; 302 ; 502) forme une structure en couches minces ayant un effet de changement de couleur ; et
    cependant que la couche de contraste (205 ; 305 ; 505) est une couche consistant en de l'encre d'impression foncée ou en un vernis resist foncé.
  2. Élément de sécurité selon la revendication 1, cependant que la couche de contraste (205; 305; 505) est une couche structurée ; et/ou que la couche de contraste (205; 305; 505) présente une épaisseur de couche comprise entre 1 µm et 15 µm, de préférence entre 2 µm et 4 µm.
  3. Élément de sécurité selon une des revendications 1 ou 2, cependant qu'une couche supplémentaire (308, 508) est agencée entre la couche absorbante (202; 302; 502) et la couche de contraste (205; 305; 505), cependant que la couche supplémentaire est une couche structurée et présente de préférence une épaisseur (constante) de couche comprise entre 1 µm et 15 µm.
  4. Élément de sécurité selon une ou plusieurs des revendications de 1 à 3, cependant que la couche partiellement réfléchissante (204; 304; 504) présente une épaisseur de couche comprise entre 5 nm et 50 nm, de préférence entre 10 nm et 30 nm, et est de préférence une couche métallique.
  5. Élément de sécurité selon une plusieurs des revendications de 1 à 4, cependant que la couche absorbante (202; 302; 502) présente une épaisseur de couche comprise entre 0,3 nm et 20 nm, de préférence entre 5 nm et 10 nm, et est de préférence une couche métallique.
  6. Élément de sécurité selon une plusieurs des revendications de 1 à 5, cependant que la couche diélectrique (203; 303; 503) présente une épaisseur optique de deux quarts de longueur d'onde relativement à une longueur d'onde de 400 nm jusqu'à neuf quarts de longueur d'onde relativement à une longueur d'onde de 700 nm, de préférence comprise entre deux et huit quarts de longueur d'onde relativement à une longueur d'onde comprise entre 400 nm et 700 nm, et est de préférence dans la zone visible une couche transparente ou translucide.
  7. Élément de sécurité selon une ou plusieurs des revendications de 1 à 6, cependant qu'une couche réfléchissante (507) est agencée du côté de la couche de contraste (205; 305; 505) non tourné vers la couche absorbante (202; 302; 502).
  8. Élément de sécurité selon une ou plusieurs des revendications de 1 à 7, cependant que la couche de contraste (205) est agencée sur la deuxième face principale du matériau support (201).
  9. Élément de sécurité selon une ou plusieurs des revendications de 1 à 7, cependant que l'élément de sécurité (200; 300; 400) comprend un deuxième matériau support (301b; 501b), cependant que la couche de contraste (305; 505) est agencée entre le premier matériau support (201; 301a; 501a) et le deuxième matériau support (301b; 501b).
  10. Élément de sécurité selon la revendication 9, cependant que
    la couche de contraste (305) est agencée sur une première face principale du deuxième matériau support (301b), ou une couche réfléchissante (507) est agencée sur la première face principale du deuxième matériau support (501b) et la couche de contraste (505) est agencée sur la couche réfléchissante (507).
  11. Procédé de fabrication d'un élément de sécurité comprenant les étapes :
    - mise à disposition d'un matériau support (201; 301a; 501a) ayant une première et une deuxième face principale qui se font face
    - agencement d'une couche absorbante (202; 302; 502), d'une couche diélectrique (203; 303; 503) et d'une couche partiellement réfléchissante (204; 304; 504) sur la première face principale ; cependant que la couche diélectrique (203; 303; 503) est agencée entre la couche absorbante (202; 302; 502) et la couche partiellement réfléchissante et que la couche absorbante (202; 302; 502) est agencée entre la couche diélectrique (203; 303; 503) et le matériau support (201; 301a; 501a) ;
    - agencement d'une couche de contraste qui est la plus proche de la couche absorbante (202 ; 302 ; 502) en partant de la couche partiellement réfléchissante (204 ; 304 ; 504), de la couche diélectrique (203 ; 303 ; 503) et de la couche absorbante (202 ; 302 ; 502) ;
    cependant que le matériau support (201 ; 301a ; 501a) est agencé entre la couche de contraste (205 ; 305 ; 505) et la couche absorbante (202 ; 302 ; 502),
    cependant que la séquence de couches constituée de la couche partiellement réfléchissante (204 ; 304 ; 504), de la couche diélectrique (203 ; 303 ; 503) et de la couche absorbante (202 ; 302 ; 502) forme une structure en couches minces ayant un effet de changement de couleur ; et
    cependant que la couche de contraste (205 ; 305 ; 505) est une couche consistant en de l'encre d'impression foncée ou en un vernis resist foncé.
  12. Procédé selon la revendication 11, cependant que la couche de contraste (205; 305; 505) est une couche structurée.
  13. Procédé selon la revendication 11 pour la fabrication d'un élément de sécurité selon une des revendications de 2 à 10.
  14. Document de valeur (100), en particulier billet de banque, comportant un substrat de document de valeur et au moins un élément de sécurité (200; 300; 500) selon une ou plusieurs des revendications de 1 à 10.
EP16710097.3A 2015-03-20 2016-03-14 Élément de sécurité Active EP3271191B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015003665.3A DE102015003665A1 (de) 2015-03-20 2015-03-20 Sicherheitselement
PCT/EP2016/000459 WO2016150558A1 (fr) 2015-03-20 2016-03-14 Élément de sécurité

Publications (3)

Publication Number Publication Date
EP3271191A1 EP3271191A1 (fr) 2018-01-24
EP3271191B1 EP3271191B1 (fr) 2019-03-13
EP3271191B2 true EP3271191B2 (fr) 2025-10-29

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Application Number Title Priority Date Filing Date
EP16710097.3A Active EP3271191B2 (fr) 2015-03-20 2016-03-14 Élément de sécurité

Country Status (6)

Country Link
US (1) US20180072088A1 (fr)
EP (1) EP3271191B2 (fr)
CN (1) CN107531074B (fr)
CA (1) CA2980366C (fr)
DE (1) DE102015003665A1 (fr)
WO (1) WO2016150558A1 (fr)

Citations (3)

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DE102008013167A1 (de) † 2008-03-07 2009-09-10 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
WO2010000470A1 (fr) † 2008-07-02 2010-01-07 Giesecke & Devrient Gmbh Élément de sécurité et son procédé de fabrication
EP2708371A1 (fr) † 2012-09-18 2014-03-19 Giesecke & Devrient GmbH Elément de sécurité optique variable avec effet visuel supplémentaire de réflexion/transmission

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DE102004032565A1 (de) * 2004-07-05 2006-02-16 Giesecke & Devrient Gmbh Sicherheitselement mit Farbkippeffekt
DE102004049118A1 (de) * 2004-10-07 2006-04-13 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
EP1832439B1 (fr) * 2006-03-06 2014-04-23 JDS Uniphase Corporation Article ayant un effet optique
DE102007034716A1 (de) * 2007-07-23 2009-01-29 Giesecke & Devrient Gmbh Sicherheitselement
DE102007061828A1 (de) * 2007-12-20 2009-06-25 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE102008029158A1 (de) * 2007-12-21 2009-06-25 Giesecke & Devrient Gmbh Sicherheitselement
DE102008028187A1 (de) 2008-06-12 2009-12-17 Giesecke & Devrient Gmbh Sicherheitselement mit optisch variablem Element.
DE102008032224A1 (de) * 2008-07-09 2010-01-14 Giesecke & Devrient Gmbh Sicherheitselement
DE102009041583A1 (de) 2009-09-15 2011-03-17 Giesecke & Devrient Gmbh Dünnschichtelement mit Interferenzschichtaufbau
DE102009058243A1 (de) * 2009-12-14 2011-06-16 Giesecke & Devrient Gmbh Dünnschichtelement mit Mehrschichtstruktur
PL2578414T3 (pl) * 2011-10-04 2014-05-30 Hueck Folien Gmbh Element zabezpieczający z efektem zmiany barw przy przechylaniu, sposób jego wytwarzania i jego zastosowanie
AU2011101684B4 (en) 2011-12-22 2012-08-16 Innovia Security Pty Ltd Optical Security Device with Nanoparticle Ink

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DE102008013167A1 (de) † 2008-03-07 2009-09-10 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
WO2010000470A1 (fr) † 2008-07-02 2010-01-07 Giesecke & Devrient Gmbh Élément de sécurité et son procédé de fabrication
EP2708371A1 (fr) † 2012-09-18 2014-03-19 Giesecke & Devrient GmbH Elément de sécurité optique variable avec effet visuel supplémentaire de réflexion/transmission

Also Published As

Publication number Publication date
EP3271191A1 (fr) 2018-01-24
WO2016150558A1 (fr) 2016-09-29
CN107531074A (zh) 2018-01-02
US20180072088A1 (en) 2018-03-15
CA2980366C (fr) 2019-09-17
CA2980366A1 (fr) 2016-09-29
DE102015003665A1 (de) 2016-09-22
EP3271191B1 (fr) 2019-03-13
CN107531074B (zh) 2020-01-07

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