EP3929000A1 - Élément de sécurité pour titres ou papiers de sécurité - Google Patents

Élément de sécurité pour titres ou papiers de sécurité Download PDF

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Publication number
EP3929000A1
EP3929000A1 EP20181416.7A EP20181416A EP3929000A1 EP 3929000 A1 EP3929000 A1 EP 3929000A1 EP 20181416 A EP20181416 A EP 20181416A EP 3929000 A1 EP3929000 A1 EP 3929000A1
Authority
EP
European Patent Office
Prior art keywords
area
color
layer
security element
oxide
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.)
Pending
Application number
EP20181416.7A
Other languages
German (de)
English (en)
Inventor
Marco Mayrhofer
Martin EGGINGER
Stephan Trassl
Anita FUCHSBAUER
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.)
Hueck Folien GmbH
Original Assignee
Hueck Folien 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 Hueck Folien GmbH filed Critical Hueck Folien GmbH
Priority to EP20181416.7A priority Critical patent/EP3929000A1/fr
Priority to PCT/EP2021/066822 priority patent/WO2021259855A1/fr
Publication of EP3929000A1 publication Critical patent/EP3929000A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/364—Liquid crystals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • 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 securities or security papers, the security element having a first side and a second side opposite the first side and at least one color-shifting first area that is perceptible when viewed from the first side.
  • Security elements of this type are usually used to increase the security against forgery of securities or security papers, such as bank notes, ID cards, credit cards, ATM cards, tickets, etc.
  • the object of the present invention is to create a security element with increased security against forgery, which is easy to manufacture and easy to verify.
  • this object is achieved by a security element of the type mentioned at the outset in that the security element has at least one second area that produces a viewing angle independent of a viewing angle when viewed from the first side, a color shift effect being created when a viewing angle is changed in the first area, the The first area under at least a first viewing angle generates the same color impression as the second area and wherein the first area has a different color impression than the second area under at least a second viewing angle different from the first viewing angle.
  • the solution according to the invention significantly increases the security against forgery of securities and security papers.
  • This is implemented in particular in that the first and the second area produce the same color impression for a viewer and the first area and the second area only differ in color from one another by tilting the security element by a viewing angle.
  • the security element according to the invention is simple to produce in comparison to more complex security features and, moreover, can be easily verified with regard to its authenticity even for an inexperienced observer or user.
  • the term area means a visual impression that is created for a viewer.
  • the areas described are surface sections that a viewer can perceive.
  • an area cannot only be recognizable or visible from one side of the security feature. This can be achieved in that, for example, a constant-color printing ink can be seen in the area, which is applied to one side of a transparent carrier layer and is also recognizable in the same way or in sections on the second side of the transparent carrier layer.
  • An area which was applied to a first side of the security element due to the manufacturing process can thus optionally also be visible at least in sections on a second side of this security element.
  • the term area therefore does not mean a special structure or concrete layer structure as such, but rather the optical effect that can be perceived in the section.
  • the security element viewed from the first side, can have at least one first color-shifting effect and at least one first color impression that is independent of a viewing angle and matched to the color-shifting effect
  • the security element viewed from the second side, having at least one second color-shifting effect and at least one second of can have a color impression that is independent of a viewing angle and is matched to the second color-shifting effect.
  • “matched” is understood to mean that color impressions matched to one another appear identical to a viewer from a specific viewing angle.
  • an interaction of the first color-changing effect and the first color impression independent of the viewing angle is not perceptible from the second side, and an interaction of the second color-changing effect and the second color impression independent of the viewing angle cannot be perceived from the first side.
  • the at least one color-changing first area and / or the at least second area can be recognized at least in sections on the second side with a color impression independent of a viewing angle.
  • the color-shifting effect or the color-constant effect can advantageously be implemented in a simple manner on both sides of the security element.
  • a color-shifting feature that is perceptible on both sides can be produced by means of just one color-shifting layer, which can prove to be extremely expedient both in terms of forgery protection and from an economic point of view.
  • the security element has a color-changing third area on the second side, the third area producing the same color impression as the second area under at least a first viewing angle and the third area under at least a second of the first Viewing angle different viewing angle has a different color impression than the second area and / or that the security element has a fourth area on a second side with a color impression independent of a viewing angle, the first area generating the same color impression as the fourth under at least one first viewing angle Area and wherein the first area has a different color impression than the fourth area under at least one second viewing angle different from the first viewing angle.
  • first area and the second area form a continuously closed area with the same color impression at the at least one viewing angle at which the first area and the second area have the same color impression.
  • the depicted motif is therefore not visually recognizable to a viewer.
  • the third area and the second area form a continuously closed area with the same color impression at the at least one viewing angle at which the third area and the second area have the same color impression and / or that the first area and the fourth area at the at least one viewing angle at which the first area and the fourth area have the same color impression form a continuously closed area with the same color impression.
  • This also has the effect that the third and the second area or the first and the fourth area do not differ from one another for a viewer or do not stand out from one another, which can also have a positive effect on the security element's security against counterfeiting.
  • first area and the third area are arranged opposite one another at least in sections and / or that the second area and the fourth area are arranged opposite one another at least in sections.
  • first area and the third area are arranged opposite one another in a certain manner defined by the manufacture of the security element, this can have an advantageous effect on the security against forgery.
  • How or to what extent the first and third areas are arranged opposite one another can be defined in the course of register coordination.
  • the first and third areas can match in shape and size and be arranged congruently one above the other.
  • the first area and the third area are identical in color and / or for the second area and the fourth area to be identical in color.
  • first area and / or the third area and / or the second area and / or the fourth area is designed as a letter, number, character, symbol or part of an image or pattern.
  • a color-changing fifth area is formed which, before changing the viewing angle, generates the same color impression as the second area and which, after changing the viewing angle, generates the same color impression as the first area before the change the viewing angle.
  • the first area and / or the third area has a layer with color-shifting pigments, in particular interference pigments, pigments with a color-shifting thin-layer structure or liquid crystal pigments, or a layer with a color-shifting thin-layer structure.
  • color-shifting pigments in particular interference pigments, pigments with a color-shifting thin-layer structure or liquid crystal pigments, or a layer with a color-shifting thin-layer structure.
  • the first area and / or the third area has at least one liquid crystal layer, in particular at least one cholesteric liquid crystal layer.
  • the first area and / or the third area has at least one layer that enhances the color shift effect, in particular a layer of dark color and / or a layer of metal oxides such as, for example, substoichiometric aluminum oxide.
  • the layer that enhances the color-shifting effect can be applied to the liquid crystal layer or the layer of color-shifting pigments, so that the layer of color-shifting pigments or the liquid crystal layer is arranged between the layer that enhances the color-shifting effect and a carrier layer.
  • the layer that enhances the color-shifting effect can, however, also be arranged between the carrier layer and the layer of color-shifting pigments or the at least one liquid crystal layer.
  • the carrier layer it is also possible for the carrier layer to be arranged between the layer that enhances the color-shifting effect and the layer of color-shifting pigments or the liquid crystal layer.
  • one or more intermediate layers can be arranged between the at least one layer that enhances the color-shifting effect and the carrier layer and / or the at least one layer of color-shifting pigments or the at least one liquid crystal layer.
  • the term layer in this document is to be understood in such a way that a layer can also be made up of several partial layers.
  • the color-shifting thin-layer structure has at least one absorber layer and at least one spacer layer made of a dielectric material.
  • the color-shifting thin-layer structure has at least one reflective layer, the spacer layer being arranged between the reflective layer and the absorber layer.
  • a carrier layer to be formed from plastic, in particular from a translucent and / or thermoplastic plastic, the carrier layer preferably at least one of the materials from the group of polyimide (PI), polypropylene (PP), monoaxially oriented polypropylene ( MOPP), biaxially oriented polypropylene (BOPP), polyethylene (PE), polyphenylene sulfide (PPS), polyetheretherketone, (PEEK) polyetherketone (PEK), polyethyleneimide (PEI), polysulfone (PSU), polyaryletherketone (PAEK), polyethylene naphthalate (PEN), liquid crystalline polymers (LCP), polyester, polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyamide (PA), polycarbonate (PC), cycloolefin copolymers (COC), polyoxymethylene (POM), acrylonitrile butadiene styrene (ABS), polyvinylene (PI), polypropylene (PP
  • the carrier layer has a thickness of 5 ⁇ m to 1000 ⁇ m, particularly preferably a thickness of 8 ⁇ m to 50 ⁇ m.
  • the layer that enhances the color-shifting effect in particular a layer of dark color and / or a layer of metal oxides such as substoichiometric aluminum oxide, is applied so that the at least a layer of color-shifting pigments or the at least one liquid-crystal layer is arranged between the at least one layer that enhances the color-shift effect and a carrier layer, or that the at least one layer that enhances the color-shifting effect is arranged between the carrier layer and the at least one layer of color-shifting pigments or the at least one liquid crystal layer or that the carrier layer is between the at least one color-shifting effect enhancing layer and the at least one layer of color-shifting pigments or the at least one liquid crystal layer is organized.
  • the at least one absorber layer has at least one metallic material, in particular selected from the group consisting of nickel, titanium, vanadium, chromium, cobalt, palladium, iron, tungsten, molybdenum, niobium, aluminum, silver, copper and / or alloys comprises these materials or is made from at least one of these materials.
  • the at least one spacer layer it is possible for the at least one spacer layer to have at least one low-index dielectric material with a refractive index less than or equal to 1.65, in particular selected from the group aluminum oxide (Al 2 O 3 ), metal fluorides, for example magnesium fluoride (MgF 2 ), Aluminum fluoride (AlF 3 ), silicon oxide (SIO x ), silicon dioxide (SiO 2 ), cerium fluoride (CeF 3 ), sodium-aluminum fluoride (e.g.
  • Al 2 O 3 aluminum oxide
  • metal fluorides for example magnesium fluoride (MgF 2 ), Aluminum fluoride (AlF 3 ), silicon oxide (SIO x ), silicon dioxide (SiO 2 ), cerium fluoride (CeF 3 ), sodium-aluminum fluoride (e.g.
  • Na 3 AlF 6 or Na 5 Al 3 F 14 neodymium fluoride (NdF 3 ), Lanthanum fluoride (LaF 3 ), samarium fluoride (SmF 3 ) barium fluoride (BaF 2 ), calcium fluoride (CaF 2 ), lithium fluoride (LiF), low-refractive organic monomers and / or low-refractive organic polymers or at least one high-refractive dielectric material with a refractive index greater than 1, 65, especially selected from the group consisting of zinc sulfide (ZnS), zinc oxide (ZnO), titanium dioxide (TiO2), carbon (C), indium oxide (In 2 O 3 ), indium tin oxide (ITO), tantalum pentoxide (Ta 2 O 5 ), Cerium oxide (CeO 2 ), yttrium oxide (Y 2 O 3 ), europium oxide (Eu 2 O 3 ), iron oxides such as iron (II, III) oxide (
  • the at least one reflective layer has at least one metallic material, in particular selected from the group silver, copper, aluminum, gold, platinum, niobium, tin, or from nickel, titanium, vanadium, chromium, cobalt and palladium or alloys of these materials, in particular cobalt-nickel alloys or at least one high-index dielectric material with a refractive index greater than 1.65, in particular selected from the group consisting of zinc sulfide (ZnS), zinc oxide (ZnO), titanium dioxide (TiO 2 ), carbon ( C), indium oxide (In 2 O 3 ), indium tin oxide (ITO), tantalum pentoxide (Ta 2 O 5 ), cerium oxide (CeO 2 ), yttrium oxide (Y 2 O 3 ), europium oxide (Eu 2 O 3 ), Iron oxides such as iron (II, III) oxide (Fe 3 O 4 ) and iron (III) oxide (Fe 2 O 3 ),
  • the security element is equipped with machine-readable features, the machine-readable features being in particular magnetic codings, electrically conductive layers, substances that absorb and / or re-emit electromagnetic waves.
  • the security element has additional layers, which additional layers include, in particular, protective lacquers, heat-sealing sheets, adhesives, primers and / or foils.
  • the specialist can create coordinated or optimized security elements according to his specialist knowledge and on the basis of the specific requirements for an area of application.
  • the embodiments according to Figures 1 to 3 each show a security element 1 for securities or security papers, the security element 1 having at least one color-changing first area 3 on a first side 2. It is provided that the security element 1 on the first side 2 has a second area 4 with a color impression independent of a viewing angle 5, 6. When a viewing angle 5, 6 is changed in the first area 3, a color shift effect arises, the first area 3 producing the same color impression under at least one first viewing angle 6 as the second area 4. Under at least one second viewing angle different from the first viewing angle 6 5, the first area 3 has a different color impression than the second area 4.
  • the security element 1 viewed from the first side 2 can have at least a first color-shifting effect and at least a first color impression that is independent of a viewing angle 5, 6 and tailored to the color-shifting effect.
  • the security element 1 Viewed from the second side 7, can have at least one second color-shifting effect and at least one second color impression that is independent of a viewing angle 5, 6 and tailored to the second color-shifting effect.
  • An interplay of the first color-changing effect and the first viewing angle 6 independent color impression can not be perceptible from the second side 7, and an interplay of the second color-changing effect and color impression independent of the second viewing angle 5 cannot be perceptible from the first side 2.
  • the at least one color-changing first area 3 can be seen at least in sections on a second side 7 opposite the first side 2.
  • the color-changing first area 3 is perceptible on the first side 2 as a star and on the second side 7 as the number ten.
  • the star or the number ten "disappears" in front of the background of constant color, which in the design example is formed by the respective regions 4, 9 of constant color.
  • the color-constant areas 4, 9 can be formed, for example, by a blue printing ink.
  • the color-shifting first area 3 can be perceptible as green when viewed in the second viewing angle 5 and in the same blue as that of the color-constant areas 4, 9 in the first viewing angle 6.
  • the Figure 2 that the at least second area 4 can be seen with a color impression independent of a viewing angle 5, 6, at least in sections on a second side 7 opposite the first side 2.
  • the second area 4, which is constant in color, can be perceived as a star on the first side 2 and as the number ten on the second side 7.
  • the star or the number ten in front of the color-shifting background, which in the design example is formed by the respective color-shifting areas 3, 8, cannot be visually recognized.
  • the color-constant area 4 can be formed, for example, by a blue printing ink.
  • the color-shifting areas 3, 8 can be perceptible as green when viewed in the second viewing angle 5 and in the same blue as that of the color-constant area 4 in the first viewing angle 6.
  • the security elements 1 can have a color-changing third area 8 with a color impression dependent on a viewing angle 5, 6 on a second side 7 opposite the first side 2.
  • the third area 8 can produce the same color impression at at least one first viewing angle 6 as the second area 4 and the third area 8 can have a different color impression than the second area 4 at at least a second viewing angle 5 that is different from the first viewing angle 6 .
  • a security element 1 has a fourth area 9 on a second side 7 with a color impression independent of a viewing angle 5, 6.
  • the first area 3 can produce the same color impression at at least one first viewing angle 6 as the fourth area 9 and the first area 3 can have a different color impression than the fourth area 9 at at least a second viewing angle 5 that is different from the first viewing angle 6 .
  • the security elements 1 in the Figures 1 to 3 are shown as a circular example, with a wide variety of other and possibly advantageous shapes or contours being conceivable, of course.
  • the first side 2 and the second side 7 of the security element 1 are shown at the viewing angle 5, in which the color-changing first area 3 and the color-changing third area 8 produce a different color impression than the color-constant second area 4 or the color constant fourth area 9.
  • the Figures 1b , 2 B and 3b each show the first side 2 and the second side 7 of the security element 1 at the viewing angle 6 at which the color-changing first area 3 and the color-changing third area 8 produce the same color impression as the color-constant second area 4 and the color-constant fourth area 9.
  • the Figure 1b shows that the first area 3 and the fourth area 9 at the at least one viewing angle 6 at which the first area 3 and the fourth area 9 have the same color impression, can form a continuously closed area with the same color impression.
  • the third area 8 and the second area 4 at the at least one viewing angle 6 at which the third area 8 and the second area 4 have the same color impression can form a continuously closed area with the same color impression.
  • the first area 3 with a constant color and the third area 8 with a constant color can be arranged opposite one another at least in sections.
  • the second area 4 with the constant color and the fourth area 9 with constant color are arranged opposite one another at least in sections. It is also conceivable and possibly sensible that the first area 3 and the third area 8 are identical in color and / or that the second area 4 and the fourth area 9 are identical in color.
  • the first area 3 and / or the third area 8 and / or the second area 4 and / or the fourth area 9 can advantageously be designed as a letter, number, character, symbol or part of an image or pattern.
  • These letters, numbers, characters, symbols or parts of an image or pattern can - as in the Figures 1 to 3 shown - be designed differently on the first side 2 and on the second side 7.
  • An example is here in the Figure 1 the first area 3 is shown in the shape of a star and the third area 8 as the number "10".
  • the second area 4 is in FIG Figure 2 Arranged in a star shape and the fourth area 9 as the number "10".
  • a large number of other and, in particular, more complex arrangements are conceivable.
  • a color-changing fifth area 10 may be formed at least on the first side 2. Before changing the viewing angle 5, 6, this can produce the same color impression as the second area 4, which is constant in color. After changing the viewing angle 5, 6, this can produce the same color impression as the color-changing first area 3 before changing the viewing angle 5, 6. In this way, the effect can be achieved that, by changing the viewing angle, defined elements, images or symbols "disappear", while others "appear” to a viewer.
  • the second page 7 according to Figure 3b is designed identically to the first page 2 in the Figure 2b , however, the color-shifting second area 4 in the Figure 3b is designed as a star and not as a number.
  • the Figures 1 , 2 and 3 show, as already described, the color shift effect when the viewing angle 5, 6 of a viewer changes. It is of course possible to change the viewing angle 5, 6 in that the viewer tilts the security element 1 himself, or, for example, also by the viewer changing his own viewing position.
  • the Figures 1a , 2a and 3a show the respective reference state at an original viewing angle 5, while the Figures 1b , 2 B and 3b reproduce the respective optical impression after changing the viewing angle 6. How much the viewing angle has to be changed so that a color-shifting effect can be perceived by a viewer depends to a large extent on the type or design of the color-shifting area.
  • the first, third and / or fifth area 3, 8, 10 has a layer with color-shifting pigments, in particular with interference pigments, pigments with a color-shifting thin-layer structure 11 or liquid crystal pigments, or a layer with a color-shifting thin-layer structure 11.
  • first, third and / or fifth area 3, 8, 10 has at least one liquid crystal layer, in particular at least one cholesteric liquid crystal layer.
  • the first, third and / or fifth area 3, 8, 10 can furthermore have at least one layer that enhances the color shift effect, in particular a layer of dark color and / or a layer of metal oxides such as, for example, substoichiometric aluminum oxide.
  • the first, third and / or fifth area 3, 8, 10 has a color-shifting thin-layer structure 11, this can have at least one absorber layer 12 and at least one spacer layer 13 made of a dielectric material.
  • the color-changing thin-layer structure 11 can have at least one reflective layer 14, wherein the spacer layer 13 can be arranged between the reflective layer 14 and the absorber layer 12.
  • a carrier layer 15 can advantageously be formed from plastic, in particular from a translucent and / or thermoplastic plastic.
  • This carrier layer 15 can preferably at least one of the materials from the group polyimide (PI), polypropylene (PP), monoaxially oriented polypropylene (MOPP), biaxially oriented polypropylene (BOPP), polyethylene (PE), polyphenylene sulfide (PPS), polyetheretherketone, (PEEK) Polyetherketone (PEK), polyethyleneimide (PEI), polysulfone (PSU), polyaryletherketone (PAEK), polyethylene naphthalate (PEN), liquid crystalline polymers (LCP), polyester, polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyamide (PA), polycarbonate ( PC), cycloolefin copolymers (COC), polyoxymethylene (POM), acrylonitrile butadiene styrene (ABS), polyvinylcholrid (P
  • the carrier layer 15 can have a thickness 16 of 5 ⁇ m to 1000 ⁇ m, particularly preferably a thickness 16 of 8 ⁇ m to 50 ⁇ m.
  • the layer that enhances the color-shifting effect in particular a layer of dark color and / or a layer of metal oxides such as, for example, substoichiometric Aluminum oxide.
  • the at least one layer of color-shifting pigments or the at least one liquid crystal layer is arranged between the at least one layer that enhances the color-shift effect and a carrier layer 15, or that the at least one layer that enhances the color-shift effect is arranged between the carrier layer 15 and the at least one layer color-shifting pigments or the at least one liquid crystal layer is arranged, or that the carrier layer 15 is arranged between the at least one layer that enhances the color-shifting effect and the at least one layer of color-shifting pigments or the at least one liquid crystal layer.
  • an absorber layer 12 preferably comprises at least one metallic material, in particular selected from the group consisting of nickel, titanium, vanadium, chromium, Cobalt, palladium, iron, tungsten, molybdenum, niobium, aluminum, silver, copper and / or alloys of these materials or is made from at least one of these materials.
  • a spacer layer 13 it advantageously comprises at least one low-refractive dielectric material with a refractive index less than or equal to 1.65, in particular selected from the group aluminum oxide (Al 2 O 3 ), metal fluorides, for example magnesium fluoride (MgF 2 ), aluminum fluoride (AlF 3 ), silicon oxide (SIO x ), silicon dioxide (SiO 2 ), cerium fluoride (CeF 3 ), sodium-aluminum fluoride (e.g.
  • Al 2 O 3 aluminum oxide
  • metal fluorides for example magnesium fluoride (MgF 2 ), aluminum fluoride (AlF 3 ), silicon oxide (SIO x ), silicon dioxide (SiO 2 ), cerium fluoride (CeF 3 ), sodium-aluminum fluoride (e.g.
  • Na 3 AlF 6 or Na 5 Al 3 F 14 neodymium fluoride (NdF 3 ), lanthanum fluoride (LaF 3 ), samarium fluoride (SmF 3 ), barium fluoride (BaF 2 ), calcium fluoride (CaF 2 ), lithium fluoride (LiF), low-refractive organic monomers and / or low-refractive organic polymers or at least one high-refractive dielectric material with a refractive index greater than 1.65, in particular selected from the group zinc sulfide (ZnS), zinc oxide (ZnO), titanium dioxide (TiO2), carbon (C), indium oxide (In 2 O 3 ), indium tin oxide (ITO), tantalum pentoxide (Ta 2 O 5 ), cerium oxide ( CeO 2 ), yttrium oxide (Y 2 O 3 ), europium oxide (Eu 2 O 3 ), iron oxides such as iron (II, III) oxide (Fe
  • a reflective layer 14 can be at least one metallic material, in particular selected from the group silver, copper, aluminum, gold, platinum, niobium, tin, or from nickel, titanium, vanadium, chromium, cobalt and palladium or alloys of these materials , in particular cobalt-nickel alloys or at least one high-index dielectric material with a refractive index greater than 1.65, in particular selected from the group consisting of zinc sulfide (ZnS), zinc oxide (ZnO), titanium dioxide (TiO 2 ), carbon (C), indium oxide (In 2 O 3 ), indium tin oxide (ITO), tantalum pentoxide (Ta 2 O 5 ), cerium oxide (CeO 2 ), yttrium oxide (Y 2 O 3 ), europium oxide (Eu 2 O 3 ), iron oxides such as Iron (II, III) oxide (Fe 3 O 4 ) and iron (III) oxide (Fe 2 O 3 ), hafnium
  • security elements 1 are equipped with machine-readable features. This can in particular be magnetic coding, electrically conductive layers, electromagnetic waves absorbing and / or re-emitting substances.
  • the security element 1 can have additional layers, which additional layers comprise in particular protective lacquers, heat-sealing lacquers, adhesives, primers and / or foils.
  • additional layers comprise in particular protective lacquers, heat-sealing lacquers, adhesives, primers and / or foils.
  • the security element 1 is formed by a transparent carrier layer 15, the carrier layer 15 being provided on one side with color-changing and color-constant features.
  • a fourth area 9 of constant color is applied to the carrier layer 15 in sections, that is to say not over the entire surface, with recesses 18 being formed as a result.
  • this color-constant fourth area 9 is completely covered by means of a color-changing first area 3, the color-changing first area 3 in particular also including the cutouts 18.
  • a printing ink is applied in sections as the second color-constant area 4, it being useful if the color of the color-constant fourth area 9 and the color of the second area 4, which is constant in color, is identical.
  • the second color-constant area 4 Viewed from the first side 2, a user can see the second color-constant area 4 and also the recesses 18 of the first color-shifting area 3 that are not covered by the second color-constant area 4. Since the first color-shifting area 3 is preferably an opaque layer, the fourth area 9, which is constant in color, cannot be seen from the first side 2.
  • the security element 1 is tilted from a first viewing angle 5 to a second viewing angle 6, the color of the first color-changing area 3 changes in such a way that it creates an identical color impression for the viewer as the second color-constant area.
  • the carrier layer 15 can have a thickness 16 of 5 ⁇ m to 1000 ⁇ m, particularly preferably a thickness 16 of 8 ⁇ m to 50 ⁇ m.
  • the color-shifting area 3 has a layer with color-shifting pigments, in particular interference pigments, pigments with a color-shifting thin-layer structure 11 or liquid crystal pigments.
  • Layer structures with liquid crystal pigments can advantageously have dark layers or reflective layers comparable to thin-layer structures 11.
  • the shape, size and configuration can advantageously be adapted to any conceivable design configuration.
  • the basic structure of the security element 1 is formed by a transparent carrier layer 15, the carrier layer 15 being provided with features of constant color on both sides.
  • a color-shifting first area 3 is applied over the entire surface of the carrier layer 15.
  • the color-shifting area 3 is designed as a color-shifting thin-layer structure 11.
  • the thin-layer structure 11 can expediently be designed to be opaque on both sides, so that a color-shifting effect viewed from the first side 2 as well as can also be seen when viewed from the second side 7.
  • the double-sided color-shifting thin-layer structure 11, as shown and described starting from the carrier layer 15, can be formed by a first absorber layer 12, a first spacer layer 13, an opaque reflective layer 14, a second spacer layer 13 and a second absorber layer 12.
  • a first color-constant area 4 can be formed in sections on the thin-layer structure 11 acting as a color-shifting area 3.
  • a second area 9 of constant color can be arranged in sections, as shown.
  • a viewer can see the second constant color area 4 applied in sections, as well as the color-shifting first area 3 underneath in the recesses 18, which is defined by the opaque reflective layer 14, the second spacer layer 13 and the second absorber layer 12 of the thin-film structure 11 is formed.
  • the fourth constant color area 9 applied in sections, as well as in the recesses 18 the underlying color-shifting first area 3, which is defined by the opaque reflective layer 14, the first spacer layer 13 and the first absorber layer 12 of the thin-film structure 11 is formed.
  • the two color-constant areas 4, 9 can optionally also be arranged directly one above the other, so that the same motif is shown for a viewer on both sides 2, 7.
  • the training variant according to Figure 5 can enable a variety of design variants.
  • the two-sided thin-layer structure 11 can be constructed in such a way that the color-shifting effect is different on the two sides 2, 7. It can thus be conceivable that the thin-film structure 11, viewed from the first side 2, appears blue at a first viewing angle 5 and appears green at a second viewing angle 6.
  • the printing color of the second color-constant area 4 can, for example, produce the same green color impression.
  • the thin-film structure 11, viewed from the second side 7 can appear green at a first viewing angle 5 and appear blue at a second viewing angle 6.
  • the printing color of the fourth color-constant area 9 can produce the same blue color impression, for example.
  • security element 1 which can be formed by two transparent carrier layers 15.
  • a second area 4 of constant color can be formed over the entire surface or only in sections between the two carrier layers 15 - for example in the color blue. It may be necessary that the second area 4 of constant color is applied with the aid of a laminating adhesive 17, by means of which a sufficient adhesive effect can be achieved between the two carrier layers 15 or between the printing ink of the second area 4 with constant color and the carrier layers 15.
  • a color-changing first area 3 can be applied in sections and a color-changing third area 8 can be applied in sections on the second side 7 of the security element 1.
  • the two color-shifting areas 3, 8 can expediently be thin-layer structures 11, which - viewed from the carrier layers 15 - can be formed by an opaque reflective layer 14, a spacer layer 13 and an absorber layer 12. Since the reflective layer 14 is preferably an opaque layer, the respective underlying structure cannot be seen by a viewer. Thus, a viewer sees the color-changing first area 3 on the first side 2, as well as the second area 4, which is constant in color, in the recesses 18 formed as a result of the application in sections through the transparent carrier layer 15 he recognizes the color-shifting third area 8, as well as the color-constant second area 4 in the recesses 18 formed as a result of the application in sections through the transparent carrier layer 15.
  • the carrier layer 15 can have a thickness 16 of 5 ⁇ m to 1000 ⁇ m, particularly preferably a thickness 16 of 8 ⁇ m to 50 ⁇ m.
  • the carrier layer 15 can advantageously be made thicker than the areas 3, 4, 8, 9 arranged on the sides 2, 7.
  • the first area 3 and the third area 8 can be arranged opposite one another at least in sections.
  • the second area 4 and the fourth area 9 can be arranged opposite one another at least in sections or reproduce a pattern.

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  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Credit Cards Or The Like (AREA)
EP20181416.7A 2020-06-22 2020-06-22 Élément de sécurité pour titres ou papiers de sécurité Pending EP3929000A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20181416.7A EP3929000A1 (fr) 2020-06-22 2020-06-22 Élément de sécurité pour titres ou papiers de sécurité
PCT/EP2021/066822 WO2021259855A1 (fr) 2020-06-22 2021-06-21 Élément de sécurité pour des papiers de valeur ou des papiers de sécurité

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20181416.7A EP3929000A1 (fr) 2020-06-22 2020-06-22 Élément de sécurité pour titres ou papiers de sécurité

Publications (1)

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EP3929000A1 true EP3929000A1 (fr) 2021-12-29

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1700711A2 (fr) * 2005-03-10 2006-09-13 Neil Teitelbaum Instrument financier avec un élément de sécurité et des inscriptions relatives à cet instrument
EP1806238A2 (fr) * 2005-12-15 2007-07-11 JDS Uniphase Corporation Dispositif de securité utilisant des flocons des pigments diffractifs
DE102007061827A1 (de) * 2007-12-20 2009-06-25 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
EP2522529A2 (fr) * 2011-05-10 2012-11-14 Giesecke & Devrient GmbH Élément de sécurité et support de données équipé de celui-ci
EP2965920A1 (fr) * 2014-07-09 2016-01-13 Sicpa Holding Sa Fils et bandes de sécurité magnétique optiquement variables
EP3514585A1 (fr) * 2018-01-22 2019-07-24 Viavi Solutions Inc. Dispositifs de sécurité métamériques

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1700711A2 (fr) * 2005-03-10 2006-09-13 Neil Teitelbaum Instrument financier avec un élément de sécurité et des inscriptions relatives à cet instrument
EP1806238A2 (fr) * 2005-12-15 2007-07-11 JDS Uniphase Corporation Dispositif de securité utilisant des flocons des pigments diffractifs
DE102007061827A1 (de) * 2007-12-20 2009-06-25 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
EP2522529A2 (fr) * 2011-05-10 2012-11-14 Giesecke & Devrient GmbH Élément de sécurité et support de données équipé de celui-ci
EP2965920A1 (fr) * 2014-07-09 2016-01-13 Sicpa Holding Sa Fils et bandes de sécurité magnétique optiquement variables
EP3514585A1 (fr) * 2018-01-22 2019-07-24 Viavi Solutions Inc. Dispositifs de sécurité métamériques

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