EP3079920A1 - Élément de sécurité à superposition et procédé de vérification - Google Patents

Élément de sécurité à superposition et procédé de vérification

Info

Publication number
EP3079920A1
EP3079920A1 EP14816184.7A EP14816184A EP3079920A1 EP 3079920 A1 EP3079920 A1 EP 3079920A1 EP 14816184 A EP14816184 A EP 14816184A EP 3079920 A1 EP3079920 A1 EP 3079920A1
Authority
EP
European Patent Office
Prior art keywords
security
substrate layer
excitation
overlay
booklet
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.)
Granted
Application number
EP14816184.7A
Other languages
German (de)
English (en)
Other versions
EP3079920B1 (fr
Inventor
Stefan TRÖLENBERG
Jörg Fischer
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.)
Bundesdruckerei GmbH
Original Assignee
Bundesdruckerei 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 Bundesdruckerei GmbH filed Critical Bundesdruckerei GmbH
Publication of EP3079920A1 publication Critical patent/EP3079920A1/fr
Application granted granted Critical
Publication of EP3079920B1 publication Critical patent/EP3079920B1/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
    • 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/305—Associated digital information
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • 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
    • B42D25/369—Magnetised or magnetisable materials
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements

Definitions

  • the invention relates generally to an overlay security feature and element in which an optical effect occurs in the superposition of two separately formed components, and to a method of verifying such a security element.
  • security features and security elements are known which comprise two components which are on the same component or two
  • the interconnected components of an article are arranged.
  • the components are designed in such a way that, when the two components are superimposed in two, a special optical effect can be observed.
  • the one component can be embodied as imaging optics with which information stored in the second component can be perceived altered in the superimposition.
  • the first component may for example be a magnifying glass, the miniaturized imprinted
  • the one component comprises a lens array, for example a lenticular lens array, which, when properly superposed on the second component, comprises printed information from different viewing directions
  • Printing inks are known from EP 2 463 11 1, the color impression of which is brought about via microparticles contained in one color, which are aligned with one another and arranged in a crystal structure. There are printing inks described in a
  • Pressure medium having a plurality of particles which are dispersed in the medium and have electrical or magnetic properties, so that they align with each other in a crystal structure when using an electric or magnetic field. This crystal structure ensures that light of a particular
  • Wavelength can propagate only along certain directions or not at all in the crystal structure and is reflected accordingly. This causes a color impression due to the wavelength-selectively reflected light.
  • a body color can be spoken of a structural color, since a geometric arrangement of the colloidal particles is responsible for the expression of the color. It is known to use such structural colors for the manufacture of objects whose color impression is easily changeable to a human observer.
  • DE 10 2009 023 982 A1 discloses a security element with a visual impression which can be changed by an external magnetic field and which contains a plurality of core-shell particles. There, it is contemplated that the core of the core-shell particles contains a magnetic fluid and a non-magnetic phase visually distinguishable from the magnetic fluid, which is movably disposed within the magnetic fluid.
  • the at least one hollow chamber is filled with a filling material having a security feature
  • the at least one hollow chamber is covered on both sides of the substrate each with an at least partially transparent cover sheet, and that
  • Hollow chamber defined hollow chamber depth which is between 0.5 ⁇ and 140 ⁇ .
  • the invention is based on the idea, a security feature and a
  • a security element which comprises at least three separate components, of which either two are arranged spatially separated on a substrate layer and the at least third component is disposed on a further substrate layer connected to the substrate layer or alternatively the at least three components on three different substrate layers are arranged, which are interconnected.
  • a security structure with a structure color is formed, which is designed so that it shows an altered reflection and / or transmittance for light depending on an electric or magnetic field in the region of this security structure and causes a different color impression.
  • the second and at least third components are each an excitation structure, which is designed such that it generates an electric and / or magnetic field.
  • the planar overlaying of two structures which are arranged on one substrate layer or on two different substrate layers means the parallel alignment of the respective substrate layer sections or entire substrate layers on which the two structures are arranged.
  • the substrate layer sections or substrate layers are oriented such that a projection of the one structure parallel to the surface normal of the substrate layer section on which this structure is formed is projected onto the other substrate layer section or the other substrate layer. If the surface of the projected structure overlaps with the other structure formed on the substrate layer portion or other substrate to which the projection is made, there is a surface overlay. If the projection of one structure completely covers the other structure, one speaks of one complete overlay. If the two substrate layer sections are curved, they are considered to be parallel if their curvatures are the same
  • Entities having at least one security feature are called
  • any physically trained object that includes at least one security feature is a security element.
  • Security documents include i.a. Identity cards, driver's licenses, identity cards, but also banknotes, postage stamps, visas as well as fake labels and packaging, tickets or similar.
  • Value documents are security documents to which a value is assigned, e.g.
  • Pigments which show emission of light as a result of excitation are referred to as luminescent pigments.
  • the emission caused by the excitation is referred to as luminescence, the excitation as luminescence excitation.
  • a preparation that can be used to print information is also referred to as ink or ink.
  • a preparation whose color impression produced in the printed condition is caused by pigments absorbing certain wavelengths of light independently of environmental conditions and / or excitation and / or
  • body colors remit / reflect are called body colors.
  • crystal-like regular structure are arranged, so that light propagation individual wavelengths through the crystal structure only in certain directions or not at all possible and this is a color impression is caused to be as
  • a color of light is determined by a wavelength of light.
  • a color is also called spectral color, as this is in the decomposition of a radiation which has light of a continuous wavelength spectrum in wavelength-selective
  • this component each cause a characteristic of the selected wavelength color effect.
  • white light is here considered an electromagnetic broadband radiation with a continuous wavelength spectrum.
  • printing preparations which are structural inks.
  • printing preparations comprising a plurality of nano- or microparticles having electrical or magnetic properties which are arranged in an electric or magnetic field relative to each other in a crystal-like regular structure.
  • the crystal-like structures can be photonic crystals.
  • a photonic crystal is a regular periodic structure that promotes or suppresses light propagation for single or multiple wavelengths due to quantum mechanical effects. This creates a color impression of the corresponding photonic crystal.
  • Structural inks which have a changed color impression upon excitation are likewise described in EP 2 463 11 1 A2. These may be designed such that the printing preparation comprises microcapsules which are a substrate or medium
  • the colloidal particles may be, for example, charged particles comprising, for example, aluminum, copper, silver, tin, titanium, tungsten, zirconium, zinc, silicon, iron, nickel, goblin or the like.
  • the particles may further comprise a substance having a
  • Polymer material contains, for example, polystyrene (PS), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), etc.
  • uncharged particles may be coated with a charged material.
  • particles may be coated with metal inorganic oxides such as silicon oxide SiO x , titanium oxide TiO x , etc. But also with polymer materials
  • Coated particles coated with ion exchange resins and many more can be used.
  • EP 2 463 1 1 1 A2 a variety of exemplary
  • magnetic field are present.
  • this is understood to mean the absence of an externally specifically set electric or magnetic field.
  • a field caused by magnetic particles or electrically charged particles intrinsically present in an article is left unattended.
  • the magnetic field strength caused by the earth's magnetic field is considered to be insignificant, so that a space is field-free despite the existing geomagnetic field, if no additional magnetic field is present in the room.
  • this field is not considered intrinsic.
  • the space is considered to be field-free when no electric field is present, even if, for example, a magnetic field is applied to affect a magnetorheological fluid in the room in terms of its viscosity.
  • the space is field-free if there is no "outer" magnetic field with a field strength in the space that is greater than the field strength of the Earth's magnetic field.
  • a field strength which causes a structure excitation is denoted by M S A.
  • individualizing information is meant information that is individual to a document or object and, when associated with, for example, stored in the object, makes that object distinguishable from other similar objects. Contains the content of the individualizing
  • a serial number is for example an individualizing information for a document.
  • a name, date of birth, or other biometric information, such as a facial image or fingerprints, are examples of personal information.
  • an overlay security element which comprises:
  • a first security structure which is brought with a structure color
  • the structure color comprises microcapsules in which colloidal particles are dispersed in a medium, which are aligned by means of an electric field and / or a magnetic field to each other to create a crystal structure and / or to change, whereby distances between the particles are decisive for the color impression of the
  • excitation structure which generates an electric or magnetic field
  • excitation structure is formed spatially separated from the security structure on the at least one substrate layer or a further substrate layer connected to the at least one substrate layer
  • the arrangement of the security structure and the excitation structure on the at least one substrate layer or on the at least one substrate layer and the further substrate layer is designed so that a superimposed state can be brought about, in which the security structure and the excitation structure overlap one another and a non-superimposed state can be brought about, in which the excitation structure and the security structure does not overlap surface and wherein the excitation structure so is formed so that it causes a change in the visually perceptible color impression of the security structure compared to the non-superimposed state in the superimposed state.
  • another excitation structure is provided, which is formed on the further substrate layer, provided that the one excitation structure with the security structure is formed on the at least one substrate layer, or else is formed on yet another substrate layer.
  • Excitation structure which is formed spatially separated from the security structure on the at least one substrate layer or a further substrate layer connected to the at least one substrate layer, comprising the steps:
  • the invention provides an easy-to-verify security element and feature as well as such a verification method which enable a very good security of a security document against unauthorized production.
  • a verification is easily possible without external aids and shows a clear, easy-to-perceive and difficult-to-imitate effect. As a result, a very high security for a security document is produced, which has this overlay security element.
  • the structure color is formed so that the effect occurring in the superimposed state is reversible when the non-superposed state is brought about. Furthermore, the effect is repeatable.
  • the excitation structure in a preferred embodiment comprises magnetic materials. These are preferably designed so that they permanently generate a magnetic field. Thus, upon establishing the superimposed state, the magnetic field generated by the magnetic materials of the excitation structure interacts with the magnetic property colloidal particles in the
  • Microcapsules of the structure color and leads to the formation of the crystal lattice-like structure of the colloidal particles. This in turn causes the change of the optical
  • the excitation structure is laterally structured in a preferred embodiment. This means that, for example, an arrangement of the magnetic materials on the substrate layer alphanumeric characters, pictograms or the like can be formed.
  • the magnetic materials may be contained in the form of magnetic particles in an ink or printing preparation and thus printed in a structured manner in a simple manner. Alignment of the magnetic particles may be accomplished by forming a magnetic field during printing of the magnetic ink or subsequent to establishing the excitation structure via exposure to a very strong external magnetic field. As a result, the magnetic particles can optionally be re-magnetized to a parallel
  • the structuring of the excitation structure makes it possible to store information that can be detected and evaluated during verification.
  • the structure color of the security structure is formed flat homogeneous. Regardless of the precise lateral alignment of the security structure and the excitation structure in the superimposed state, in such an embodiment the information stored via the lateral structuring of the excitation structure can be easily recognized during verification, since a color change of the structure color does not occur in a planar manner, but only local Color changes occur which are correlated with the lateral structure of the excitation structure.
  • a further development of the verification method thus provides that an information represented by the differences is derived and compared with an expected information and the overlay feature is only verified as genuine if a derived information corresponds to the expected information. It is essential here that the magnetic materials, i. the magnetic particles, so on the one
  • Substrate layer or the further substrate layer can be applied, that the lateral structure deviates from an optically perceptible, preferably colored graphically detectable structure or appearance. This can be achieved by, for example, that formed by the magnetic particles
  • Excitation structure is overprinted by a graphic, for example, colorful and multi-colored structure. It is likewise possible to produce a printed image with metameric colors, which are colors which, although they produce the same color impression, differ in at least one physical property, here for example a magnetic property.
  • One set of printing inks does not include magnetic particles, the other set of printing inks.
  • the color that can be displayed with the two sets is identical. So it is possible to create a full color colorful graphic image and still form in this image any laterally structured magnetic structure.
  • the through the magnetic materials in the excitation structure is likewise possible to produce a printed image with metameric colors, which are colors which, although they produce the same color impression, differ in at least one physical property, here for example a magnetic property.
  • One set of printing inks does not include magnetic particles, the other set of printing inks.
  • the color that can be displayed with the two sets is identical. So it is possible to create a full color colorful graphic image and still form in this image any laterally structured magnetic structure.
  • Security structure In another embodiment of the invention may alternatively or additionally be provided that a lateral position of the security structure is changed relative to the excitation structure in the superimposed state and another
  • Overlay mapping and further overlay mapping are determined and the overlay feature is only verified as genuine if the found
  • the recognizable by the color change logo moves in the security structure and can thus be used to verify the overlay feature.
  • the security structure may be structured or structured in a specific area. If the structuring of the security structure coincides with a structuring of the excitation structure, then the information stored in the excitation structure can be completely detected only in the case of an optimal lateral alignment in the superimposed state.
  • Such an overlay feature is particularly suitable for an application in a booklet, for example a passbook.
  • Substrate layer is a booklet or is part of a booklet page and the other substrate layer is another booklet or part of another booklet page and a booklet page and the other booklet page are joined together in a booklet.
  • a booklet an article is considered in which substrate layers on one side and along the side are non-detachably connected to each other.
  • the security structure and the excitation structure are each formed at the same side position of their corresponding booklet page.
  • a flat Overlaying then takes place in the closed state of the booklet.
  • a booklet page can consist of a homogeneous substrate layer, for example based on pulp.
  • a book page but also a
  • Plastic film or a lamination body which is composed of a plurality of substrate layers, such as thermoplastic substrate layers.
  • Safety structure may be formed on one of these substrate layers, preferably on a substrate layer, which forms an inner material layer in the lamination body. It is understood that such a lamination body forming a booklet page, as well as “simple" booklet page a variety of others
  • the safety structure In order to enable the safety structure to be viewed from both the front side and the back side of the lamination body or the substrate layer, it is preferably transparent to visible light at least in the section in which the safety structure is formed.
  • Security structure or an excitation structure is formed in the region of the supernatant.
  • the booklet side with the supernatant on a folded edge on which the supernatant can be folded so that in the closed state of the booklet, the supernatant does not protrude beyond the remaining booklet pages.
  • the supernatant can then be folded over any page of the booklet to a planar overlay with an excitation structure or security structure on any other side. For example, all pages of a passport book can be checked for authenticity and integrity.
  • an excitation structure is realized in the supernatant, which is laterally structured on the individual passbook pages, a respective index number is printed as a security structure with a structure color
  • a color change of the numbers can be verified during verification and thus checked, if all pages of the booklet are present or individual pages have been removed and / or replaced.
  • embodiments may provide that the individual index digits are printed on the individual passbook pages in such a way that, in the non-superimposed state, the digit produced by the structure color of the security structure is not graphically recognizable. This can be achieved by printing the surrounding sections, not printed by the digits of a print area for the security structure, with a body color which has an identical color impression to the structure color in the unexcited state.
  • the material of the one substrate layer and, if other substrate layers are joined together with the one substrate layer for forming the one booklet side also the material of these other
  • Substrate layers are transparent to light in the visible wavelength range, so that the safety structure formed by means of the structure color is optically detectable by both opposing surfaces of a booklet page.
  • Substrate layer portion in which the security structure is formed is transparent to visible light, next to an excitation structure on another
  • Substrate layer still be provided an additional substrate layer, as
  • Substrate layer and the further substrate layer is connected to the booklet, wherein the one substrate layer in the booklet between the additional substrate layer and the further substrate layer is arranged. If the front side of the one substrate layer with the security structure is struck, superposition with the excitation structure of the further substrate layer preferably occurs. However, if you look at the booklet so that you look at the back of a substrate layer, the security structure superimposed on the additional excitation structure, which
  • preferably deviating from the excitation structure on the further substrate layer is structured so that in the security structure different information emerge in color, depending on whether you look in the otherwise transparent portion of the front or the back of a book page in the open booklet. At the same location, therefore, different color changes are caused depending on the superimposed excitation structure.
  • Security structure is formed, substantially perpendicular to the other
  • Substrate layer and the additional substrate layer is oriented, neither on the front nor on the back of information can be detected. This behavior can also be used for verification.
  • the overlay feature on a booklet page is verified by flipping the booklet side formed of the substrate layer onto which the security structure is applied such that the booklet overlies the further booklet face comprising the further substrate layer on which the excitation structure is trained.
  • information represented by the differences is derived and compared with expected information
  • Overlay feature only verified as true if the derived information matches the expected information.
  • Overlapping state is brought about, in which the security structure is superimposed on another excitation structure, and another overlay map is detected and the other overlay map is compared with the overlay map and the overlay feature is only verified as true, if a difference between the other overlay map of an overlay map corresponds to an expected difference.
  • Overlapping image is detected, is turned over and detected when detecting the other overlay image, the opposite surface of the book page.
  • the perceptible change in the color impression between the non-superposed state of the security structure and an excitation structure or multiple excitation structures and the superimposed state comprise individualizing information and / or personalizing information. This can be brought about by lateral structuring of the security structure and / or the excitation structure and / or excitation structures.
  • individualizing information and / or the personalizing information may additionally be stored openly perceptively or covertly in the security document or overlay security feature to provide verification of a comparison of that stored information with that resulting from the change of the security information
  • 1 a - 1 c are schematic representations of a microcapsule of a structural color for
  • Fig. 2a - 2c is a schematic representation of microcapsules for explaining a
  • Fig. 3a is a schematic view of one by means of a substrate layer
  • Front side of the security document shows; a schematic view of the back of the security document of Fig. 3a; a schematic view of the security document of Figure 3a and 3b, wherein a rear side portion is folded over a front side portion, to bring about a superposition state between a security structure and an excitation structure.
  • Security structure and the excitation structure in the superimposed state are positioned laterally deviating; another superposition state of the security document of Fig. 3a and 3b; an exploded view of several book pages; a booklet made of the booklet pages shown in Figure 4a in an open position in which a front side of the booklet page, in which the safety structure is formed, is open;
  • Security structure is shifted laterally relative to other booklet pages; a schematic exploded view of another booklet; a schematic representation of the booklet of FIG. 5a, in which a front side of the book page is opened, in which the
  • Security structure is formed, wherein the security structure is laterally structured; a further schematic view of the booklet of Figure 5b, wherein the one book page with the security structure is laterally displaced relative to the remaining Büchleinfact; an exploded view of yet another booklet; a schematic view of the booklet of Figure 6a, in which a front of a booklet page is opened with the security structure. a schematic view of the booklet of Figure 6a and 6b, in which the booklet page is oriented with the security structure perpendicular to the other pages of the book; a schematic view of the booklet of Figure 6a to 6c in a situation in which the back of the booklet page is opened with the security structure. an exploded view of another booklet, with a
  • Binder page has a supernatant; a schematic view of the booklet of FIG. 7a, in which one of the sides is opened and the supernatant on one end of the
  • Binder page have a security structure and the remaining pages each have a small excitation structure, which together encode information; a schematic view of the open booklet of FIG. 8a, wherein the booklet page with the safety structure all the rest
  • Fig. 8c is a schematic view similar to that of Fig. 8b, wherein from the
  • 9 is a schematic flow diagram of a verification method.
  • Microcapsules 10 included. The same technical features are provided in the figures with the same reference numerals.
  • a structural ink contains a plurality of such microcapsules 10, which are responsible for the color impression or the color of the structure color.
  • Each of the microcapsules 10 has a shell 11 containing a transparent substance 12 containing colloidal particles, e.g. Nanoparticles 13, includes.
  • the sheath 1 1 is formed of a transparent material.
  • the substance 12 is also transparent and represents a fluid in which the nanoparticles 13 in the
  • Embodiments of Fig. 1 a to 1 c, 2a to 2c can move in the verdruckten state.
  • the nanoparticles are for example paramagnetic or
  • FIG. 1 a An embodiment is shown in Fig. 1 a to 1 c.
  • a microcapsule 10 is shown in the field-free space.
  • the colloidal nanoparticles are arranged irregularly.
  • the microcapsules 10 of the colloidal nanoparticles have no special optical property, so that they do not significantly influence the color impression of the structure color in which they are contained. This can thus be regarded, for example, as almost transparent in the printed state. If a magnetic field with a field strength M1 is applied, then the paramagnetic or superparamagnetic ones are directed
  • a ratio of the magnetic field strength M1 or M2 to the susceptibility determines a lattice spacing of the nanoparticles.
  • Another influencing factor is the particle size.
  • the crystal structure thus formed has characteristics of a photonic crystal. In this, for some wavelengths, propagation is only along certain
  • FIGS. 2a to 2c another embodiment of microcapsules 10 is shown schematically. These differ in that the colloidal particles already in the field-free space in the microcapsule 10 have a crystal structure 15, so that, for example, an orange color component of the light is reflected from the white light of a blackbody beam.
  • the field strength is increased, the distance between the particles in the crystal lattice decreases, so that now a green color component of the light is reflected. If the field strength is further increased (FIG. 2c), the grid spacing becomes even lower, so that again a blue color component of the light is reflected again.
  • a security document 30, which comprises a substrate layer 31, is shown schematically in FIG. 3 a.
  • 3a shows a view of a front side 41, which is indicated by the letter "V.”
  • an excitation structure 61 is formed, which is laterally structured such that it corresponds to the shape of the Represents letter "F".
  • the excitation structure 61 is formed by means of magnetic particles, which are for example printed with an ink. These are added in one or more different inks with which the
  • Section 51 is printed. Overall, the portion 51 is preferably printed so that its overall appearance shows a different optical information than that given by the lateral structuring of the excitation structure 61. This is indicated here by way of example by hatching 62.
  • an image, lettering, or the like, which is different from the lateral structure formed by magnetic materials may be noticeable here. As a result, the structure formed by the magnetic particles remains hidden to a viewer.
  • FIG. 3b shows a rear side 42 of the security document 30 according to FIG. 3a.
  • the security document 30 is a lower edge 39 of the
  • a portion 71 can be seen, in which a homogeneous flat-shaped security structure 81 is formed by means of a structure color, which their
  • a letter "R” indicates that a top view of the security document 30 is shown in Figure 3b
  • the elements which are on the viewed side of the security document are each by means of
  • the security structure 81 can convey a homogeneous color impression or it can also be transparent so that the substrate layer 31 is visible through the security structure, or if it is transparent, it can be seen through the substrate layer 31.
  • FIG. 3c the security structure 81 of the excitation structure 61 is superimposed surface by the security document 30, as indicated by arrow 102 in Fig. 3a, with a left half 43 is folded over a right half 44. Due to the magnetic field, which is caused by the excitation structure in the form of the capital letter "F", color changes are caused locally in the structure color of the security structure 81, which together also form the shape of the capital letter "F" of the excitation structure.
  • a captured image 203 of the portion 71 in which the security structure 81 is formed thus shows as differences 92 to an image 202 of FIG. 3b, which is detected by the security structure in the non-superimposed state, as differences 92 those areas that have color changes 91 and share the shape of the
  • the information stored in the excitation structure 61 here the capital letter "F" may additionally be stored in the security document 30.
  • the storage may be coded or uncoded electronically in a microchip (FIG. not shown) or otherwise as an imprint, in a hologram or the like.
  • the security document 30 is shown in a superimposed state similar to that of Figure 3c, but with the security structure being laterally, i. parallel to the plane in which the security structure 81 and the excitation structure 61 are oriented in the superposed state, is arranged offset from the superposition state 3c. It can be seen that due to the other lateral arrangement, the color change 91 occurs within the security structure 81 at another position. If one compares the image 204 detected for the overlapping state of FIG. 3d with the image 203 which is detected in the overlay state of FIG. 3c, it can be seen that a shift d1 of the letter "F" formed by the color differences 92 is a displacement d2 This behavior can also be used to verify the security document 30. Only when such an expected shift occurs is it
  • FIG. 3e another superposition state of the security structure 81 via the excitation structure 61 is shown.
  • the security document 30, as indicated in FIG. 3 a via arrows 103 and 104, is rolled up, as it were, so that the security structure 81 located on the rear side 42 does not directly apply the security structure
  • the overlay feature can be in two
  • Fig. 4a shows an exploded view of a booklet 130, such as a passbook, shown schematically, which is formed from substrate layers 31 to 34 and a cover 120.
  • a safety structure 81 of homogeneous surface is printed again.
  • the substrate layer 31 later forms the booklet side 131.
  • an excitation structure 61 in this case in the form of a capital letter "A" is applied at the same lateral position relative to the subsequent booklet page 132, which again passes through
  • Fig. 4b the booklet 130 is shown in an open position in which a front side 41 of a booklet page 131 is opened, which is formed from the substrate layer 31, on which the security structure 81 is applied. In this position, the security structure 81 superimposed on the excitation structure, which on the
  • 5a to 5c are an exploded view and a correspondingly opened booklet 130, as shown in FIGS. 4a to 4c, this embodiment being different in that the security structure 81 is not formed homogeneously flat, In the opened state, in which edges 141, 142 of the booklet pages 131, 132 overlap one another, in the captured image 208 the capital letter "A" in the security structure is designated as Color change 91 again. If, on the other hand, the booklet page 131 is displaced relative to the booklet page 132, then only a part 93 of the capital letter "A" of the excitation structure 61 in FIG.
  • FIG. 6a to 6d another embodiment of a passport 130 is shown.
  • Fig. 6a a corresponding exploded view is shown in which the individual
  • Substrate layers 31 to 37 and later book pages 131 to 137 can be seen.
  • additional substrate layer 35 or booklet page 135 is an additional excitation structure 63, which Form a capital letter "B" has introduced.
  • the booklet page 135 is arranged such that the one substrate layer 31 or booklet side 131 with the safety structure 81 is arranged between the further booklet page 133 and the additional booklet page 135. If you look at the booklet 130 in such a way that one on a front side 41 of the booklet page 131 with the
  • Safety structure 81 views, so superimposed this not on the immediately following booklet page 132 but next book page 133 arranged
  • the booklet page 131 is turned over and viewed while it is oriented perpendicular to the remaining booklet pages 132 to 137, no information in the form of color changes 91 can be recognized in the security structure.
  • This is shown in Fig. 6c schematically by means of the recorded image 21 1 of the front side 41 and the recorded image 212 of the back 42 of the booklet 131 with the side Security structure 81 to recognize.
  • the booklet side 131 is transparent at least in a section 71 except for the safety structure 81, which optionally has a homogeneous color.
  • a different information about the color change 91, which is caused by the magnetically formed excitation structures, is observable. If no excitation structure is superposed, no color change occurs.
  • the security structure 81 is then either completely transparent or homogeneously monochrome.
  • Fig. 7a is an exploded view of another booklet 130 is shown schematically.
  • a last booklet page 131 is larger than the remaining booklet pages 132 to 138 formed.
  • a supernatant 160 the
  • Büchleinseite 131 is applied as a security structure over the entire surface of a structure color on the otherwise preferably transparent material of the supernatant 160.
  • the individual book pages 131 to 138 comprise in edge strips 151 to 158 in each case an identifier 161 to 168, for example in the form of a number associated with the respective book page. These are arranged parallel to the respective booklet side edge 142 to 148 laterally offset from one another.
  • Fig. 7b the booklet is shown in an open position, wherein the
  • Supernatant 160 is folded over the edge stiffeners 151 to 154 of a portion of the open book pages.
  • the identifiers 161 to 164 of the peripheral stiffeners 151 to 154 of the book pages 131 to 134 overlaid by the overhang 160 can then be recognized as color changes 91 in the security structure 81.
  • the individual identifiers 161 to 168 here the numbers “1” to "8", are applied via magnetic particles. These particles are contained, for example, in inks. Thus, you can the identifiers 161 to 168 are printed or be. In order to hide the identifiers, the edge strips 151 to 158 are additionally printed with normal body colors so that the identifiers 161 to 168 can not be recognized. This is again schematically indicated by a hatching 62. At this
  • Embodiment all book pages 131 to 138 individually and individually checked for the existing identifier 161 to 168. If the identifiers 161 to 168 are assigned consecutively, for example, from the last page 131 to the first page 138 for the individual book pages 131 to 138, the booklet 130 can simply be checked for completeness of the book pages 131 to 138.
  • Security structure is formed over the entire edge strip of a top passbook page and in the corresponding edge strips of the passbook pages arranged underneath each identifiers are arranged, which are arranged laterally offset relative to the identifiers of the other passbook pages in the edge strips.
  • the security structure and the excitation structures are respectively applied to individual substrate layers, preferably printed.
  • a substrate layer to which the security structure in the form of a structural color or the excitation structure is applied by means of magnetic materials, is joined together with further substrate layers to form a composite body and the composite body is used as security document or booklet page of a booklet.
  • Excitation structure is arranged in the interior of an individualization card made of thermoplastic materials.
  • the remaining pages of a passport book can then each have a security structure in the form of a
  • Structure color imprint have.
  • this imprint is printed in each case on the backs of the individual booklet pages at that position corresponding to a position of an excitation structure arranged on the side of the passbook formed as a lamination body. If one leafs through such a booklet from behind, then the information stored in the excitation structure is to be seen on the rear sides, provided that the security document body with the excitation structure is inserted as the first book page in the booklet. When turning over (quasi backward) in the booklet then disappears the perceptible information as soon as the back the remaining pages are no longer overlaid. As a result, all pages can be checked at least for the presence of a security structure in the form of a structure color.
  • the security structure is arranged in the lamination body, preferably in a transparent window area.
  • the individual remaining pages of the booklet can each comprise an excitation structure, which are matched to one another such that, when all the book pages are superimposed, information is coded together.
  • the individual booklet pages may each have a circle segment section 171 to 174 of a circle 175, wherein each book page 132 to 135 has a different sector section of the circle. This is shown by way of example in FIGS. 8a and 8b.
  • Fig. 8a shows an exploded view of the booklet 130.
  • FIG. 8b shows the open booklet 130 in that situation in which the booklet page 131, which is formed as lamination body with the security structure 81, all other book pages superimposed with their excitation structures 63 to 66 and in the security structure 81 thus a figure 170 in the form of a full circle 175 can be seen.
  • Figure 214 of FIG. 8b If a booklet page 135 is removed from the booklet 130, this can be recognized immediately, since in the figure 170 protruding through the color change 91 a circular section 174 is missing.
  • Verification method 500 will be explained. First, a security document is provided 510 which is to be verified as to whether a correct
  • Overlay security element is present.
  • a non-superimposed state is established 520 in which the security structure is superimposed on an excitation structure areally.
  • Security structure or that section detects 530, in which the security structure is formed.
  • an overlay state is produced 540, in which the security structure superimposed on an excitation structure or a portion in which the security structure is to be formed, is superimposed flat over a section in which an excitation structure should be present.
  • another illustration of the security structure or the section in which the security structure is formed 550 is compared and differences in the form of color changes are determined 560. On the basis of the differences in the color perception of the images, one becomes
  • Verification decision pleases whether the security feature exists and if necessary
  • Additional further specifications correspond to 570. It can be examined whether the color changes encode a specific piece of information. Additional steps may also be performed, such as changing the overlay state and capturing further mappings that are also examined for differences in the detected color changes, as discussed in the above

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)

Abstract

L'invention concerne un élément de sécurité à superposition, comprenant : au moins une couche substrat (32 ; 33 ; 35) ; une première structure de sécurité (81) imprimée avec une couleur structurale, laquelle couleur structurale comprend des microcapsules (10) dans lesquelles sont dispersées dans un milieu des particules colloïdales qui peuvent être orientées les unes par rapport aux autres au moyen d'un champ électrique et/ou magnétique afin de créer et/ou modifier une structure cristalline, les distances entre les particules déterminant l'impression chromatique de la couleur structurale ; ainsi qu'une structure d'excitation (61) qui génère un champ électrique ou magnétique, laquelle structure d'excitation (61) est séparée dans l'espace de la structure de sécurité (81) disposée sur la ou les couches substrats (31) ou bien une autre couche substrat (32 ; 33 ; 35) reliée à la ou aux couches substrat (31) est formée, la structure de sécurité (81) et de la structure d'excitation (61) étant agencées sur la ou les couches substrats (31) ou sur au moins une couche substrat (31) et sur l'autre couche substrat (32 ; 33 ; 35) de façon à pouvoir obtenir un état superposé, dans lequel la structure de sécurité (81) et la structure d'excitation (61) sont superposées à plat, et un état non superposé, dans lequel la structure d'excitation (61) et la structure de sécurité (81) ne sont pas superposées à plat. La structure d'excitation (61) est configurée de telle façon que, dans l'état superposé, elle provoque une variation de l'impression chromatique perceptible optiquement de la structure de sécurité (81) par rapport à l'état non superposé. L'invention concerne en outre un procédé de vérification d'une caractéristique à superposition.
EP14816184.7A 2013-12-10 2014-12-10 Élément de sécurité à superposition et procédé de vérification Active EP3079920B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013225515.2A DE102013225515B4 (de) 2013-12-10 2013-12-10 Überlagerungssicherheitselement und Verifikationsverfahren
PCT/EP2014/077287 WO2015086710A1 (fr) 2013-12-10 2014-12-10 Élément de sécurité à superposition et procédé de vérification

Publications (2)

Publication Number Publication Date
EP3079920A1 true EP3079920A1 (fr) 2016-10-19
EP3079920B1 EP3079920B1 (fr) 2019-09-11

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DE (1) DE102013225515B4 (fr)
WO (1) WO2015086710A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102015102037A1 (de) * 2015-02-12 2016-08-18 Bundesdruckerei Gmbh Dokument
GB201604947D0 (en) * 2016-03-23 2016-05-04 Rue De Int Ltd A security document comprising a polymer substrate

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19729918B4 (de) * 1997-07-04 2010-07-01 Securency International Pty Ltd., Craigieburn Sicherheits- und/oder Wertdokument
FR2944229B1 (fr) * 2009-04-10 2011-05-13 Arjowiggins Security Document a volets comportant une structure munie d'un filigrane ou pseudo-filigrane et procede associe
DE102009023982A1 (de) 2009-06-05 2010-12-09 Giesecke & Devrient Gmbh Sicherheitselement
DE102009024447A1 (de) 2009-06-10 2010-12-16 Giesecke & Devrient Gmbh Sicherheitselement mit veränderbarem optischen Erscheinungsbild
DE102009025019A1 (de) 2009-06-10 2010-12-16 Giesecke & Devrient Gmbh Sicherheitsmerkmal und Verfahren zur Herstellung eines Sicherheitsmerkmals
KR100953578B1 (ko) 2009-08-05 2010-04-21 주식회사 나노브릭 광결정성을 이용한 인쇄 매체, 인쇄 방법 및 인쇄 장치
DE102011015837A1 (de) * 2011-04-01 2012-10-04 Giesecke & Devrient Gmbh Optisch variabeles Sicherheitselement mit optisch variabeler Farbschicht
DE102011108477A1 (de) 2011-07-25 2013-01-31 Giesecke & Devrient Gmbh Sicherheitselement mit Fenster im Substrat

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DE102013225515B4 (de) 2018-06-21
EP3079920B1 (fr) 2019-09-11
WO2015086710A1 (fr) 2015-06-18
DE102013225515A1 (de) 2015-06-25

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