EP0998396B2 - Safety document - Google Patents

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Publication number
EP0998396B2
EP0998396B2 EP98942617A EP98942617A EP0998396B2 EP 0998396 B2 EP0998396 B2 EP 0998396B2 EP 98942617 A EP98942617 A EP 98942617A EP 98942617 A EP98942617 A EP 98942617A EP 0998396 B2 EP0998396 B2 EP 0998396B2
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EP
European Patent Office
Prior art keywords
layer
security element
security
semitransparent
magnetic layer
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.)
Expired - Lifetime
Application number
EP98942617A
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German (de)
French (fr)
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EP0998396B1 (en
EP0998396A1 (en
Inventor
Christian Schmitz
Theo Dr. Burchard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giesecke and Devrient GmbH
Original Assignee
Giesecke and Devrient GmbH
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Application filed by Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Priority to SI9830128T priority Critical patent/SI0998396T2/en
Publication of EP0998396A1 publication Critical patent/EP0998396A1/en
Publication of EP0998396B1 publication Critical patent/EP0998396B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/351Translucent or partly translucent parts, e.g. windows
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/355Security threads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/36Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/369Magnetised or magnetisable materials
    • B42D2033/16
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S283/00Printed matter
    • Y10S283/901Concealed data
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/916Fraud or tamper detecting
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24835Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including developable image or soluble portion in coating or impregnation [e.g., safety paper, etc.]

Definitions

  • the invention relates to a security document, such as a banknote, security, identification card or the like, with a security element, which has at least one machine-testable, magnetic layer and at least one further layer.
  • DE-PS 16 96 245 discloses, for example, a security paper in which a security thread is embedded with a ferromagnetic coating.
  • the magnetic material commonly used has a very dark body color, so that the security thread is recognizable as a dark stripe even when fully embedded in the paper on the paper surface.
  • DE-PS 27 54267 From DE-PS 27 54267 it is also known to provide a security thread with a magnetic coating and another security feature.
  • An important selection criterion for the security features to be combined here is that the features for a counterfeiter should not be readily recognizable and imitable. For this reason, the magnetic layer is combined, for example, with a metal layer or an opaque lacquer which fluoresces under UV light.
  • the measures described in DE-PS 27 54 267 increase the security against forgery only in the event that the document is actually checked by machine. A visual inspection of the authenticity of the document is not or only partially possible by the described security features.
  • a security thread has already been proposed (WO92 / 11142), which enables both a mechanical check of the magnetic properties and a visual authenticity check.
  • the magnetic layer is combined with an opaque metal layer having recesses in the form of characters or patterns, the magnetic layer being disposed below the metal layer as seen by the observer, so that the optical effect of the magnetic material does not occur on the paper surface.
  • the recesses are practically invisible in reflected light in the paper, but contrast strongly in contrast from their opaque environment in transmitted light.
  • the recessed areas of the characters are transparent, i. There must be no magnetic material in the area of the signs. It must therefore be ensured in the production of the security element that the magnetic layer and the visually recognizable characters are generated in register with each other so that they do not overlap.
  • the invention has for its object to propose a security document with a security element having a magnetic coating whose intrinsic color hardly occurs in incident light and which can be provided in a simple manner with additional visually verifiable features.
  • a partially transparent in the visual spectral range cover layer is already sufficient to attenuate the dark appearance of the magnetic material so far that the most unwanted optical effects can be avoided.
  • the partially transparent cover layer additionally makes it possible to provide the security element with visually and / or machine-recognizable information, e.g. in that recesses in the form of characters are provided in the magnetic layer or the magnetic layer itself is formed in the form of visually and / or mechanically recognizable characters or patterns.
  • An exact register-containing arrangement of cover layer and magnetic layer is no longer necessary in this case, since the visually recognizable information can be seen through the partially transparent layer.
  • the security element consists of a magnetic layer and a partially transparent layer which obscures the magnetic layer.
  • the partially transparent layer consists of a thin semitransparent metal layer.
  • a semitransparent metal layer has optical reflection properties, which are very similar to an opaque metal layer, if the layer thickness is not too small.
  • the raster elements can be shaped as desired. Geometric standard shapes, such as points, lines, triangles, etc., come as well as special patterns, numbers, letters, etc.
  • the grid is chosen so that there is sufficient coverage of the magnetic layer, but at the same time also present under the screened layer Information remains recognizable.
  • the raster elements can be produced by means of any printing ink, but preferably a white or light-colored printing ink, or by any coating method, such as vacuum vapor deposition, hot stamping, etc.
  • the magnetic layer can be provided either over the entire surface or only partially, regardless of the type of cover used.
  • the magnetic layer is applied in the form of a coding, in particular a bar code.
  • the magnetic layer may also contain only recesses in the form of visually and / or machine readable characters.
  • further visually and / or machine-identifiable information can be arranged in the magnetic-layer-free regions of the code or in the recesses.
  • the magnetic-layer-free regions can be filled, for example, with a nonmagnetic layer which has the same color as the magnetic material.
  • a nonmagnetic layer which has the same color as the magnetic material.
  • This non-magnetic layer may also have recesses in the form of characters, patterns, etc.
  • the inventive combination of a magnetic layer and a partially permeable cover layer not only makes it possible to provide information to be inspected in the magnetic layer, but also to include the partially permeable cover layer in the design of the security element, which results in a variety of embodiments which, in addition to various specific advantages, provide the common Have the advantage that the security against counterfeiting of the security element or the object provided with this security element is increased.
  • the security element can be designed as a security thread or planchettes, which are at least partially incorporated into a security document.
  • These items can also be a security document.
  • the security element according to the invention can be used very advantageously in the field of product security.
  • the security element may contain further anti-theft elements, such as e.g. a coil.
  • the security element can also be provided on or in a document material, which in turn is applied to product protection for arbitrarily shaped objects.
  • FIG. 1 shows a security document 1 according to the invention.
  • a banknote is shown in which a security thread 2 in the form of a so-called “window security thread” is embedded.
  • This security thread 2 is virtually woven into the paper during papermaking and occurs at regular intervals on the surface of the paper. These areas 3 are shown hatched here.
  • security document is not limited to banknotes. Rather, it can be any value document, such as a check, a share, an identity card or the like.
  • the security element 2 likewise does not necessarily have to be a security thread.
  • the security element 2 can for example also be arranged completely on the surface of the security document 1 as a thin layer sequence or self-supporting label.
  • the shape of each element is also freely selectable.
  • the element 2 can, for example, extend in strip form from one edge of the document 1 to the opposite edge or, alternatively, be executed in the form of an island with any contour contours.
  • the security element is to be provided only as a thin layer sequence on the security document, it makes sense to prepare the layer sequence of the security element separately on a film material and then to transfer it to the document. In this case, the layers on the transfer film must be in reverse order to that which is desired later on the document.
  • Fig. 2 shows a possible embodiment of such a sheet material, wherein the illustrated transfer sheet 20 has the shape of a band.
  • the covering layer 6 is shown in this example as a screened layer with a constant screen ruling.
  • an adhesive layer 9 is provided over the magnetic layer 5, which provides for attachment of the layer structure 21 on the document. This may be, for example, hot melt adhesive or radiation-curable adhesive.
  • the carrier 7 may be advantageous to leave the carrier 7 also on the document as a protective layer. In this case, of course, no separation layer 8 may be provided on the substrate. Rather, additional measures must be taken that the layer structure of the element 1 has a good adhesion to the carrier layer 7.
  • the transfer film can either be provided with the security element layer structure over its full area and can only be applied in the desired areas, e.g. be removed and transferred by targeted activation of the adhesive from the full-surface coating.
  • the carrier material can already be provided in spaced-apart areas with the desired individual elements.
  • security elements consist essentially of a carrier layer and layers provided thereon for the authenticity marking.
  • security elements are usually fastened together with the carrier foil on or in the security document, such as e.g. Security threads or labels.
  • Fig. 3 shows the layer structure of a security element according to the invention in the simplest embodiment.
  • the carrier 4 is provided here over its entire surface with a magnetic layer 5 over which a layer 6 in the form of a grid is provided, wherein the grid elements are made of opaque material.
  • This screened layer 6 must face the viewer on the finished document in order to be able to ensure the effect according to the invention of covering the magnetic layer 5.
  • the security element is used as a security thread, then it may be useful to cover the magnetic material on the opposite side of the grid 6.
  • a further screen layer or a full-surface, preferably white or light print layer can be provided.
  • the white or light layer has the advantage that the thread from the bottom color well adapted to the paper and therefore practically does not appear on the back of the paper on the surface.
  • the use of a second screened layer has the advantage that the thread on the front and back sides looks identical and therefore can be dispensed with a laterally correct introduction into the paper.
  • FIG. 4 shows a security element with the layer sequence already explained with reference to FIG. 3.
  • the magnetic layer 5 is additionally provided with recesses 10 in the form of characters, patterns or the like. If it is apecializingseiament which is embedded in a paper layer, the carrier 4 is advantageously carried out transparent or at least translucent. In this way, the recesses 10 when viewed in transmitted light can be recognized as strongly contrasting characters in the environment formed by the opaque magnetic material 5.
  • the grid elements of the layer 6 in the region of the recesses 10 hardly impair this effect. When viewed in reflected light, however, the grid 6 additionally obscures the recesses 10, so that they practically do not appear.
  • the screened layer 6 is also sufficient to mask the dark appearance of the magnetic layer 5.
  • FIG. 5 shows a further variant of the security element according to the invention, which, as already explained with reference to FIG. 4, consists of a carrier layer 4, a magnetic layer 5 with recesses 10 in the form of visually recognizable information and a screened layer 6.
  • the screen width of the layer 6 was changed.
  • Fig. 5 shows the case that the screen width a in the region of the magnetic material is greater than the screen width b in the region of the recesses 10.
  • the screen width a is smaller than the screen width b, is of course also possible.
  • the recesses 10 in the magnetic layer 5 can be more emphasized or hidden.
  • FIG. 6 shows an embodiment of the security element 2 according to the invention, in which the magnetic layer 5 is present over the entire surface of the carrier 4 and only the screened covering layer 6 contains readable information 12. These are represented by a variation of the screen ruling.
  • Fig. 6 again shows the case that the screen ruling a is greater than the raster width b in the area of the information 12. The reverse case is of course also possible here.
  • This security element has the advantage that the magnetic layer 5 is adequately covered, but at the same time visually and / or mechanically recognizable information is present, which is generated in a simple manner in the same operation with the application of the covering layer 6.
  • FIG. 7 shows an embodiment of the security element according to the invention which, in addition to a magnetic authenticity feature, has an optically variable, visually testable authenticity feature.
  • the security element is shown here in longitudinal section to better illustrate the particular embodiment of the magnetic layer 5 in the form of a coding can.
  • the carrier 4 is provided on one of its surfaces with the magnetic authenticity feature 5, which in the present case is in the form of a magnetic code.
  • the cover layer 6 according to the invention is arranged over the magnetic layer 5, the cover layer 6 according to the invention is arranged.
  • the surface facing away from the carrier 4 is provided with a diffraction structure in the form of a relief structure.
  • the layer 13 is provided with a reflection layer 14.
  • the individual layers can be configured differently.
  • the carrier 4 In the event that the element is to be tested in transmission, the carrier 4 must be made of a transparent or at least translucent material.
  • the reflection layer 14 must also be an at least partially transparent layer. It may, for example, consist of a transparent lacquer which has a different refractive index to the layer 13 or else of a semitransparent metal layer.
  • the reflection layer 14 is formed as a grid, wherein the grid elements consist of an opaque metal layer.
  • the optically variable information can be observed in reflection and, on the other hand, the magnetic layer 5 applied on the opposite surface of the carrier 4.
  • the magnetic layer 5, not as shown in FIG. 7, is in the form of a coding is present on the support 4, but has recesses 10 in the form of characters, as shown in FIGS. 4 and 5.
  • the diffraction structure 13 or the reflection layer 14 serve here as an additional covering layer for the magnetic layer 5, in particular if the security element is embedded as a window security thread in security paper.
  • the diffraction layer 13 faces the viewer with the transmissive reflection layer 14 in the window areas, it will primarily recognize the optically variable effects in incident light. Only in Duichlicht become present in the magnetic layer 5 Recesses 10 visible through the grid gaps.
  • the screened layer 6 arranged above the magnetic layer 5 serves here to make the thread inconspicuous even when viewing the back side of the paper, ie to cover the dark magnetic layer.
  • the reflection layer 14 is also conceivable to form the reflection layer 14 as an opaque metal layer. If the observer in this case faces the covering layer 6, then he can observe the diffraction structure urine in the regions free of magnetic layer and covering layer. If the magnetic layer 5 has, for example, recesses in the form of characters, these characters show the optically variable effect of the layer 13. However, when the element is viewed from the back, the observer only recognizes the optically variable information.
  • the opaque reflection layer 14 prevents detection of the magnetic layer 5 on the opposite support surface.
  • the surfaces of the element can only be tested separately.
  • the substrate 4 must be made opaque.
  • the reflection layer 14 can be designed arbitrarily in this case.
  • the diffraction structure does not necessarily have to be embossed in a separate layer, such as a lacquer layer. Of course, it can also be introduced directly into the surface of the carrier material 4.
  • a further embodiment according to the invention provides to arrange all safety-related layers on a surface of the carrier 4, as shown in Fig. 8.
  • the magnetic layer 5 is first provided on the support 4, which has recesses 10 in the form of characters or patterns in the present case.
  • a transparent lacquer layer 15 with at least one luminescent substance which emits when excited with radiation outside and / or within the visible spectral range.
  • the last layer forms a lacquer layer 13, in which diffraction structures in the form of a relief structure are introduced, and a reflection layer 14.
  • the reflection layer 14 must be made in the present case also subfloor-part permeable to a visual and / or machine recognizability of the introduced in the magnetic layer 5 recesses 10 in To allow transmitted light.
  • it may consist of a semitransparent metal layer or a screened opaque metal layer or else a transparent lacquer layer with different refractive index.
  • the luminescent layer 15 can, of course, also contain a plurality of luminescent substances or have a plurality of mutually merging regions of different emission wavelength, so that a rainbow fluorescence is produced. An application in the form of patterns is possible.
  • a protective layer e.g. be provided a transparent lacquer layer, which, however, is not shown in the figure.
  • FIG. 9 shows a further variant of the invention, in which, however, the covering layer no longer consists of a screened layer with opaque raster elements. Instead, a semi-transparent layer 16, preferably a semi-transparent metal layer is used, which is applied to the magnetic layer 5. As already explained in connection with the screened cover layer, the semitransparent layer can also be used to introduce visually recognizable information.
  • FIG. 10 shows the case that the magnetic layer 5 is provided with recesses 10 in the form of characters, patterns or the like, and above which the semitransparent layer 16 is disposed. Again, the characters in transmitted light are recognizable as strongly contrasting with their environment information, while they hardly appear when viewed in reflected light.
  • the support 4 is provided on one side with a layer 20 which is covered by a screened covering layer 6, here in the form of a regular grid.
  • a screened covering layer 6 is arranged, which ensures that the security element provides an identical appearance from both sides.
  • the second screened layer 6 applied on the underside of the carrier 4 could alternatively also be arranged between the layer 20 and the carrier 4 or be completely absent.
  • the layer 20 is a full-surface layer, which is designed in a uniform color; but is composed of materials with different properties.
  • FIGS. 12 to 14 show different embodiments of this layer 20 in plan view.
  • the layer 20 forms a continuous layer that extends over at least a portion of the support 4.
  • the layer 20 is composed of alternately arranged regions 5 and 21 which, for purposes of clarity, are separated from one another in the figure by dividing lines. In fact, these areas can not be visually separated because they are the same color. In the areas 5, however, magnetic material is arranged, which can be detected by machine, while in the intermediate regions 21, a material of the same color is arranged without magnetic properties.
  • the magnetic regions 5 can represent a coding. As shown in Fig. 12, both the magnetic portions 5 and the non-magnetic portions 21 may have recesses 10 in the form of readable information. However, these recesses 10 can also be dispensed with.
  • Fig. 13 shows another mutual arrangement of the magnetic portions 5 and the non-magnetic portions 21.
  • the magnetic material 5 is passerhaltig to the provided in the non-magnetic regions recesses 10 in the edge region of the security element arranged.
  • the magnetic portions 5 are shown as full-surface, parallel to the recesses 10 extending, so-called "magnetic tracks".
  • the intermediate regions of the magnetic coding would in this case also have to be filled with the non-magnetic layer 21.
  • Fig. 14 also shows an embodiment of the layer 20 in plan view.
  • the magnetic regions 5 also form a coding whose intermediate areas are filled by a non-magnetic layer 21 of identical color.
  • the recesses 10 are in this example only in the non-magnetic regions 21st
  • FIG. 15 shows another possible embodiment of the layer 20.
  • the layer 20 is not contiguous but consists of separate magnetic regions 5 and non-magnetic regions 21.
  • the non-magnetic regions 21 which are color-matched, however, to the magnetic regions 5 may constitute, for example, readable information, patterns, or the like. These can also vary depending on the distance between the magnetic regions 5 in size or the information content.
  • the illustrated variants for the magnetic layer (eg magnetic coding) and the covering layer (eg different screen widths) can be combined with one another as desired within the scope of the invention. Additional features such as an optically variable layer, a fluorescent layer, or other additional feature layer may be incorporated into all embodiments shown.
  • the optically variable layers can be embossed diffraction structures, which represent, for example, kinegrams, moviegrams or holograms.
  • other optically variable layers, such as transparent or opaque interference layers find application. These can be vapor-deposited directly onto the element or mixed in the form of pigments of an ink. Opaque effect colors are also suitable in particular for the production of the screened covering layer.
  • the preparation of the security elements according to the invention is carried out in a simple manner by using a carrier material, such as e.g. a plastic film or paper, provided with the authenticity features and then cut into individual elements of the desired shape.
  • a carrier material such as e.g. a plastic film or paper
  • one of the surfaces must be additionally coated with adhesive.
  • a separate transfer belt e.g. a hot stamping foil, prepared with the element layer structure and then parts thereof z. B. transmitted under heat and pressure on the document or the present in endless form document matehal.
  • the security elements can also be generated with their final outline contours on the transfer belt and then transferred.
  • the magnetic layer may be either printed (e.g., screen printed) or coated.
  • the magnetic layer has recesses in the form of characters or patterns, etc., or if it is formed as a magnetic code, according to a further embodiment, further visually and / or machine-readable information can be arranged in the magnetic-layer-free intermediate regions. It can be formed, for example, of characters or the like which are produced with a metal pigment-containing printing ink or by metallization processes such as hot stamping, etc.
  • the cover layer can also be produced by printing technology.
  • metal-pigment-containing, white or bright printing inks are particularly suitable.
  • printing inks which contain special color pigments, such as optically variable interference-layer pigments with body colors are particularly suitable.
  • a full metal layer is used for the cover layer, it must be applied via metallization methods.
  • the semi-transparent full-face covering layer can be easily produced in the vacuum metallization process.
  • An interrupted metal layer can also be produced using masks using the vacuum vapor method.
  • the metal layer in the first step can be applied over the entire surface and then removed again by etching techniques in the desired areas.
  • Another possibility is provided by methods in which an anti-adhesion layer is applied in the areas to be removed later. After the full-surface coating with metal, the non-stick layer is chemically dissolved, thus removing the overlying metal layer.
  • the security elements according to the invention are used as security threads, then it may be advantageous to construct the security element symmetrically.
  • two carriers are produced with the same sequence of layers and so with each other glued that the feature layers come to lie between the carrier. In this way, they are protected from harmful environmental influences, such as moisture or corrosion. Often, however, it is also sufficient to apply the safety-relevant layers to a support and to provide the layers with a protective lacquer layer in a last step or to laminate a protective film layer.
  • security elements or security documents can also be used to secure a wide variety of products.
  • Anti-theft labels for example, which communicate with monitors mostly via coils or complicated electronic circuits, can be further secured with a security element according to the invention.
  • a security document for example a banknote paper which has a security element according to the invention, can be applied as a certificate of authenticity on any objects, such as CD's, books, etc.

Landscapes

  • Credit Cards Or The Like (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Materials For Medical Uses (AREA)
  • Laminated Bodies (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Magnetic Record Carriers (AREA)
  • Soft Magnetic Materials (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Holo Graphy (AREA)

Abstract

The invention relates to a security element for protecting objects which has at least one mechanically testable magnetic layer and at least one further layer consisting of a layer semitransparent in the visual spectral region. The semitransparent layer is additionally disposed over the magnetic layer so as to cover the magnetic layer. The invention further relates to a security document with such a security element.

Description

Die Erfindung betrifft ein Sicherheitsdokument, wie eine Banknote, Wertpapier, Ausweiskarte oder dergleichen, mit einem Sicherheitselement, welches zumindest eine maschinell prüfbare, magnetische Schicht sowie zumindest eine weitere Schicht aufweist.The invention relates to a security document, such as a banknote, security, identification card or the like, with a security element, which has at least one machine-testable, magnetic layer and at least one further layer.

Es ist seit langem bekannt, Sicherheitsdokumente, wie Banknoten oder Ausweiskarten mit magnetischen Sicherheitselementen zu versehen. DE-PS 16 96 245 offenbart beispielsweise ein Sicherheitspapier, in welches ein Sicherheitsfaden mit einer ferromagnetischen Beschichtung eingebettet ist. Das üblicherweise verwendete Magnetmaterial weist jedoch eine sehr dunkle Körperfarbe auf, so dass der Sicherheitsfaden auch bei vollständiger Einbettung in das Papier auf der Papieroberfläche als dunkler Streifen erkennbar ist. Um diesen Nachteil zu vermeiden, wird bereits in der DE-PS 16 96 245 vorgeschlagen, den mit Magnetmaterial beschichteten Faden zusätzlich beidseitig mit einer opaken, weißen Beschichtung zu versehen, um den optischen Effekt des magnetischen Materials an der Papieroberfläche zu vermeiden.It has long been known to provide security documents, such as banknotes or identity cards with magnetic security elements. DE-PS 16 96 245 discloses, for example, a security paper in which a security thread is embedded with a ferromagnetic coating. However, the magnetic material commonly used has a very dark body color, so that the security thread is recognizable as a dark stripe even when fully embedded in the paper on the paper surface. To avoid this disadvantage, it is already proposed in DE-PS 16 96 245, in addition to provide the magnetic material coated thread on both sides with an opaque, white coating to avoid the optical effect of the magnetic material on the paper surface.

Aus der DE-PS 27 54267 ist es ferner bekannt, einen Sicherheitsfaden mit einer magnetischen Beschichtung sowie einem weiteren Sicherheitsmerkmal auszustatten. Als wichtiges Auswahlkriterium für die zu kombinierenden Sicherheitsmerkmale dient hierbei, dass die Merkmale für einen Fälscher nicht ohne weiteres erkennbar und imitierbar sein sollen. Aus diesem Grund wird die Magnetschicht beispielsweise mit einer Metallschicht oder einem opaken, unter UV-Licht fluoreszierenden Lack kombiniert. Die in der DE-PS 27 54 267 beschriebenen Maßnahmen erhöhen die Fälschungssicherheitjedoch nurfürden Fall, dass das Dokument auch tatsächlich maschinell überprüft wird. Eine visuelle Kontrolle der Echtheit des Dokuments wird durch die beschriebenen Sicherheitsmerkmale nicht oder nur bedingt ermöglicht.From DE-PS 27 54267 it is also known to provide a security thread with a magnetic coating and another security feature. An important selection criterion for the security features to be combined here is that the features for a counterfeiter should not be readily recognizable and imitable. For this reason, the magnetic layer is combined, for example, with a metal layer or an opaque lacquer which fluoresces under UV light. However, the measures described in DE-PS 27 54 267 increase the security against forgery only in the event that the document is actually checked by machine. A visual inspection of the authenticity of the document is not or only partially possible by the described security features.

Es wurde daher auch bereits ein Sicherheitsfaden vorgeschlagen (WO92/11142), der sowohl eine maschinelle Überprüfung der magnetischen Eigenschaften als auch eine visuelle Echtheitskontrolle ermöglicht. In diesem Fall wird die magnetische Schicht mit einer opaken Metallschicht kombiniert, die Aussparungen in Form von Zeichen oder Mustern aufweist, wobei die Magnetschicht vom Betrachter aus gesehen unter der Metallschicht angeordnet ist, so dass der optische Effekt des magnetischen Materials an der Papieroberfläche nicht auftritt. Die Aussparungen sind im Auflicht im Papier praktisch nicht zu erkennen, heben sich jedoch im Durchlicht stark kontrastierend von ihrer opaken Umgebung ab. Dies setzt allerdings voraus, dass die ausgesparten Bereiche der Zeichen transparent sind, d.h. im Bereich der Zeichen darf sich kein Magnetmaterial befinden. Es muss daher bei der Herstellung des Sicherheitselements darauf geachtet werden, dass die Magnetschicht und die visuell erkennbaren Zeichen registerhaltig zueinander erzeugt werden, so dass sie sich nicht überlappen.Therefore, a security thread has already been proposed (WO92 / 11142), which enables both a mechanical check of the magnetic properties and a visual authenticity check. In this case, the magnetic layer is combined with an opaque metal layer having recesses in the form of characters or patterns, the magnetic layer being disposed below the metal layer as seen by the observer, so that the optical effect of the magnetic material does not occur on the paper surface. The recesses are practically invisible in reflected light in the paper, but contrast strongly in contrast from their opaque environment in transmitted light. However, this assumes that the recessed areas of the characters are transparent, i. There must be no magnetic material in the area of the signs. It must therefore be ensured in the production of the security element that the magnetic layer and the visually recognizable characters are generated in register with each other so that they do not overlap.

Der Erfindung liegt die Aufgabe zugrunde, ein Sicherheitsdokument mit einem Sicherheitselement vorzuschlagen, das eine Magnetbeschichtung aufweist, deren Eigenfarbe im Auflicht kaum in Erscheinung tritt und das auf einfache Weise mit zusätzlichen visuell prüfbaren Merkmalen versehen werden kann.The invention has for its object to propose a security document with a security element having a magnetic coating whose intrinsic color hardly occurs in incident light and which can be provided in a simple manner with additional visually verifiable features.

Die Lösung dieser Aufgabe ergibt sich aus den unabhängigen Ansprüchen. Weiterbildungen und bevorzugte Ausführungsformen sind Gegenstand der Unteransprüche.The solution to this problem arises from the independent claims. Further developments and preferred embodiments are the subject of the dependent claims.

Es hat sich überraschenderweise gezeigt, dass eine im visuellen Spektralbereich teildurchlässige Abdeckschicht bereits ausreicht, das dunkle Erscheinungsbild des Magnetmaterials so weit abzuschwächen, dass die meist unerwünschten optischen Effekte vermieden werden können. Die teildurchlässige Abdeckschicht ermöglicht es zusätzlich, das Sicherheitselementmitvisuell und/odermaschinell erkennbaren Informationen zu versehen, z.B. indem in der Magnetschicht Aussparungen in Form von Zeichen vorgesehen werden oder die Magnetschicht selbst in Form von visuell und/oder maschinell erkennbaren Zeichen oder Mustern ausgebildet wird. Eine exakte registerhaltige Anordnung von Abdeckschicht und Magnetschicht ist in diesem Fall nicht länger notwendig, da die visuell erkennbaren Informationen durch die teildurchlässige Schicht hindurch erkennbar sind.It has surprisingly been found that a partially transparent in the visual spectral range cover layer is already sufficient to attenuate the dark appearance of the magnetic material so far that the most unwanted optical effects can be avoided. The partially transparent cover layer additionally makes it possible to provide the security element with visually and / or machine-recognizable information, e.g. in that recesses in the form of characters are provided in the magnetic layer or the magnetic layer itself is formed in the form of visually and / or mechanically recognizable characters or patterns. An exact register-containing arrangement of cover layer and magnetic layer is no longer necessary in this case, since the visually recognizable information can be seen through the partially transparent layer.

In seiner einfachsten Ausführungsform besteht das Sicherheitselement daher aus einer magnetischen Schicht sowie einer die Magnetschicht verdekkenden teildurchlässigen Schicht.In its simplest embodiment, therefore, the security element consists of a magnetic layer and a partially transparent layer which obscures the magnetic layer.

Gemäß einer bevorzugten Ausführungsform besteht die teildurchlässige Schicht aus einer dünnen semitransparenten Metallschicht. Eine semitransparente Metallschicht weist bei nicht zu geringer Schichtdicke optische Reflexionseigenschaften auf, die einer opaken Metallschicht sehr ähnlich sind.According to a preferred embodiment, the partially transparent layer consists of a thin semitransparent metal layer. A semitransparent metal layer has optical reflection properties, which are very similar to an opaque metal layer, if the layer thickness is not too small.

Dies kann bei der Herstellung von Sicherheitsfäden, die üblicherweise zumindest teilweise in Sicherheitspapier eingebettet werden, vorteilhaft genutzt werden. In den Bereichen, in welchen der Faden vollständig in das Papier eingebettet ist, ist er im Auflicht auf der Papieroberfläche kaum zu erkennen, da die Magnetschicht von der Metallschicht ausreichend verdeckt wird. Im Durchlicht dagegen tritt der Faden wie ein opaker metallischer Faden stark kontrastierend zur Umgebung als dunkler Streifen hervor.This can be used to advantage in the production of security threads, which are usually at least partially embedded in security paper. In the areas in which the thread is completely embedded in the paper, it is hardly recognizable in reflected light on the paper surface, since the magnetic layer is sufficiently concealed by the metal layer. In transmitted light, on the other hand, the thread emerges like an opaque metallic thread, contrasting strongly with the surroundings as a dark stripe.

Selbstverständlich können statt einer zusammenhängenden semitransparenten Metallschicht auch andere teildurchlässige Materialien oder Schichten verwendet werden, wie z.B. Druckfarben mit optisch variablen Interferenzschichtpigmenten, flüssigkristalline Schichten oder Beugungsstrukturen mit einer semitransparenten Reflexionsschicht.Of course, instead of a contiguous semi-transparent metal layer, other partially permeable materials or layers may also be used, e.g. Printing inks with optically variable interference layer pigments, liquid-crystalline layers or diffraction structures with a semitransparent reflection layer.

Gemäß einer weiteren bevorzugten Ausführungsform wird die teildurchlässige Schicht des Sicherheitselements von einer gerasterten Schicht gebildet, wobei die einzelnen Rasterelemente opak, vorzugsweise metallisch ausgeführt sind. Die Rasterelemente können hierbei beliebig geformt sein. Geometrische Standardformen, wie Punkte, Linien, Dreiecke etc., kommen ebenso in Frage wie besondere Muster, Ziffem, Buchstaben etc. Die Rasterweite wird hierbei so gewählt, dass eine ausreichende Abdeckung der Magnetschicht erfolgt, gleichzeitig jedoch auch eine eventuell unter der gerasterten Schicht vorliegende Information erkennbar bleibt. Die Rasterelemente können mit Hilfe einer beliebigen Druckfarbe, vorzugsweise jedoch einer weißen oder hellen Druckfarbe oder über beliebige Beschichtungsverfahren, wieVakuumdampfverfahren, Heißprägen etc., erzeugt werden.According to a further preferred embodiment, the partially transparent layer of the security element formed by a screened layer, wherein the individual grid elements are made opaque, preferably metallic. The raster elements can be shaped as desired. Geometric standard shapes, such as points, lines, triangles, etc., come as well as special patterns, numbers, letters, etc. The grid is chosen so that there is sufficient coverage of the magnetic layer, but at the same time also present under the screened layer Information remains recognizable. The raster elements can be produced by means of any printing ink, but preferably a white or light-colored printing ink, or by any coating method, such as vacuum vapor deposition, hot stamping, etc.

Die Magnetschicht kann unabhängig von der Art der verwendeten Abdeckschicht entweder vollflächig oder nur bereichsweise vorgesehen werden. Gemäß einer bevorzugten Ausführungsform ist die Magnetschicht in Form einer Codierung, insbesondere eines Balkencodes, aufgebracht. Die Magnetschicht kann allerdings auch nur Aussparungen in Form von visuell und/ oder maschinell lesbaren Zeichen enthalten. Zusätzlich können in den magnetschichtfreien Bereichen des Codes oder in den Aussparungen weitere visuell und/oder maschinell erkennbare Informationen angeordnet werden.The magnetic layer can be provided either over the entire surface or only partially, regardless of the type of cover used. According to a preferred embodiment, the magnetic layer is applied in the form of a coding, in particular a bar code. However, the magnetic layer may also contain only recesses in the form of visually and / or machine readable characters. In addition, further visually and / or machine-identifiable information can be arranged in the magnetic-layer-free regions of the code or in the recesses.

Gemäß einer besonderen Ausführungsform können die magnetschichtfreien Bereiche beispielsweise mit einer nichtmagnetischen Schicht ausgefüllt werden, die die gleiche Farbe wie das Magnetmaterial aufweist. Auf diese Weise wird das Vorhandensein eines magnetischen Codes zusätzlich verschleiert. Auch diese nichtmagnetische Schicht kann Aussparungen in Form von Zeichen, Mustern etc. aufweisen.According to a particular embodiment, the magnetic-layer-free regions can be filled, for example, with a nonmagnetic layer which has the same color as the magnetic material. In this way, the presence of a magnetic code is additionally obscured. This non-magnetic layer may also have recesses in the form of characters, patterns, etc.

Durch die erfindungsgemäße Kombination einer Magnetschicht und einer teildurchlässigen Abdeckschicht ist es jedoch nicht nur möglich, in der Magnetschicht prüfbare Informationen vorzusehen, sondern auch die teildurchlässige Abdeckschicht in die Gestaltung des Sicherheitselements mit einzubeziehen, wodurch sich unterschiedlichste Ausführungsformen ergeben, die neben verschiedenen spezifischen Vorteilen den gemeinsamen Vorteil besitzen, dass die Fälschungssicherheit des Sicherheitselements bzw. des mit diesem Sicherheitselement versehenen Gegenstandes erhöht wird.The inventive combination of a magnetic layer and a partially permeable cover layer, however, not only makes it possible to provide information to be inspected in the magnetic layer, but also to include the partially permeable cover layer in the design of the security element, which results in a variety of embodiments which, in addition to various specific advantages, provide the common Have the advantage that the security against counterfeiting of the security element or the object provided with this security element is increased.

Das Sicherheitselement kann hierbei, wie bereits erwähnt, als Sicherheitsfaden oder Planchetten ausgebildet sein, die zumindest teilweise in ein Sicherheitsdokument eingebracht sind. Es ist allerdings auch denkbar, das Sicherheitselement band- oder etikettenförmig auszubilden und auf der Oberfläche eines Gegenstandes zu befestigen. Bei diesen Gegenständen kann es sich ebenfalls um ein Sicherheitsdokument handeln. Das erfindungsgemäße Sicherheitselement lässt sich jedoch auf auf dem Gebiet der Produktsicherung sehr vorteilhaft einsetzen. In diesem Fall kann das Sicherheitselement neben der erfindungsgemäßen Magnetschicht und telldurchlässigen Abdeckschicht weitere diebstahlsichemde Elemente, wie z.B. eine Spule, aufweisen. Gemäß einer weiteren Variante kann das Sicherheitselement auch auf oder in einem Dokumentenmaterial vorgesehen werden, welches wiederum zur Produktsicherung auf beliebig geformte Gegenstände appliziert wird.As already mentioned, the security element can be designed as a security thread or planchettes, which are at least partially incorporated into a security document. However, it is also conceivable to form the security element band or label-shaped and to attach it to the surface of an object. These items can also be a security document. However, the security element according to the invention can be used very advantageously in the field of product security. In this case, in addition to the magnetic layer and the transmissive cover layer according to the invention, the security element may contain further anti-theft elements, such as e.g. a coil. According to a further variant, the security element can also be provided on or in a document material, which in turn is applied to product protection for arbitrarily shaped objects.

Die verschiedenen Ausführungsformen sowie ihre Vorteile werden im Folgenden anhand der Figuren näher erläutert.The various embodiments and their advantages will be explained in more detail below with reference to FIGS.

Es zeigen:

Fig. 1
erfindungsgemäßes Sicherheitsdokument,
Fig. 2
erfindungsgemäßes Folienmaterial in Form eines Transferbandes zur Herstellung eines Sicherheitselements im Querschnitt,
Fig. 3
erfindungsgemäßes Sicherheitselement mit gerasterter Abdeckschicht im Querschnitt,
Fig.4
erfindungsgemäßes Sicherheitselement mit Aussparungen in der Magnetschicht und gerasterter Abdeckschicht im Querschnitt,
Fig. 5
erfindungsgemäßes Sicherheitselement mit Aussparungen in der Magnetschicht und gerasterter Abdeckschicht, wobei die Rasterweite im Bereich der Aussparungen und im Bereich der Magnetschicht unterschiedlich ist, im Querschnitt,
Fig. 6
erfindungsgemäßes Sicherheitselement mit gerasterter Abdeckschicht, wobei in der Abdeckschicht durch Variation der Rasterweiten Informationen dargestellt werden, im Querschnitt,
Fig. 7
erfindungsgemäßes Sicherheitselement mit Beugungsstrukturen, einem Magnetcode und gerasterter Abdeckschicht im Längsschnitt,
Fig. 8
erfindungsgemäßes Sicherheitselement mit Aussparungen in der Magnetschicht, zusätzlicher Beugungsstruktur und Fluoreszenzschicht im Querschnitt,
Fig. 9
erfindungsgemäßes Sicherheitselement mit semitransparenter, vollflächiger Abdeckschicht im Querschnitt,
Fig. 10
erfindungsgemäßes Sicherheitselement mit Aussparungen in der Magnetschicht und semitransparenter Abdeckschicht im Querschnitt,
Fig. 11
besondere Ausführungsform des erfindungsgemäßen Sicherheitselements im Querschnitt,
Fig. 12
spezielle Ausführungsform der in Fig. 12 gezeigten Schicht 20 in Aufsicht,
Fig. 13
weitere spezielle Ausführungsform der in Fig. 12 gezeigten Schicht 20 in Aufsicht,
Fig. 14
weitere spezielle Ausführungsform der in Fig. 12 gezeigten Schicht 20 in Aufsicht,
Fig. 15
weitere spezielle Ausführungsform der in Fig. 12 gezeigten Schicht 20 in Aufsicht.
Show it:
Fig. 1
security document according to the invention,
Fig. 2
Inventive film material in the form of a transfer belt for producing a security element in cross-section,
Fig. 3
Security element according to the invention with screened covering layer in cross section,
Figure 4
Security element according to the invention with recesses in the magnetic layer and screened covering layer in cross section,
Fig. 5
Security element according to the invention with recesses in the magnetic layer and screened cover layer, wherein the screen width in the region of the recesses and in the region of the magnetic layer is different, in cross-section,
Fig. 6
Security element according to the invention with screened cover layer, wherein information is represented in the cover layer by varying the screen widths, in cross section,
Fig. 7
Security element according to the invention with diffraction structures, a magnetic code and screened covering layer in longitudinal section,
Fig. 8
Security element according to the invention with recesses in the magnetic layer, additional diffraction structure and fluorescent layer in cross section,
Fig. 9
Security element according to the invention with a semitransparent, full-surface covering layer in cross section,
Fig. 10
inventive security element with Recesses in the magnetic layer and semitransparent cover layer in cross section,
Fig. 11
particular embodiment of the security element according to the invention in cross-section,
Fig. 12
special embodiment of the layer 20 shown in FIG. 12 in plan view,
Fig. 13
further specific embodiment of the layer 20 shown in FIG. 12 in plan view,
Fig. 14
further specific embodiment of the layer 20 shown in FIG. 12 in plan view,
Fig. 15
further specific embodiment of the layer 20 shown in Fig. 12 in plan view.

Fig. 1 zeigt ein Sicherheitsdokument 1 gemäß der Erfindung, Im vorliegenden Fall ist eine Banknote dargestellt, in welche ein Sicherheitsfaden 2 in Form eines sogenannten "Fenstersicherheitsfadens" eingebettet ist. Dieser Sicherheitsfaden 2 wird während der Papierherstellung quasi in das Papier eingewebt und tritt in bestimmten regelmäßigen Abständen an die Oberfläche des Papiers. Diese Bereiche 3 sind hier schraffiert dargestellt.1 shows a security document 1 according to the invention. In the present case, a banknote is shown in which a security thread 2 in the form of a so-called "window security thread" is embedded. This security thread 2 is virtually woven into the paper during papermaking and occurs at regular intervals on the surface of the paper. These areas 3 are shown hatched here.

Der Begriff "Sicherheitsdokument" ist jedoch nicht auf Banknoten beschränkt. Es kann sich vielmehr um jedes beliebige Wertdokument, wie einen Scheck, eine Aktie, eine Ausweiskarte oder dergleichen, handeln.However, the term "security document" is not limited to banknotes. Rather, it can be any value document, such as a check, a share, an identity card or the like.

Bei dem erfindungsgemäßen Sicherheitselement 2 muss es sich ebenfalls nicht notwendigerweise um einen Sicherheitsfaden handeln. Das Sicherheitselement 2 kann beispielsweise auch als dünne Schichtfolge oder selbsttragendes Etikett vollständig auf der Oberfläche des Sicherheitsdokuments 1 angeordnet werden. Die Form des jeweiligen Elements ist ebenso frei wählbar. Das Element 2 kann beispielsweise streifenförmig von einer Kante des Dokuments 1 zur gegenüberliegenden Kante verlaufen oder alternativ inselförmig mit beliebigen Umrisskonturen ausgeführt sein.The security element 2 according to the invention likewise does not necessarily have to be a security thread. The security element 2 can for example also be arranged completely on the surface of the security document 1 as a thin layer sequence or self-supporting label. The shape of each element is also freely selectable. The element 2 can, for example, extend in strip form from one edge of the document 1 to the opposite edge or, alternatively, be executed in the form of an island with any contour contours.

Sofern das Sicherheitselement lediglich als dünne Schichtfolge auf dem Sicherheitsdokument vorgesehen werden soll, ist es sinnvoll, die Schichtfolgedes Sicherheitselements separat auf einem Folienmaterial vorzubereiten und anschließend auf das Dokument zu übertragen. In diesem Fall müssen die Schichten auf der Transferfolie in umgekehrter Reihenfolge zur derjenigen vorliegen, die später auf dem Dokument erwünscht ist.If the security element is to be provided only as a thin layer sequence on the security document, it makes sense to prepare the layer sequence of the security element separately on a film material and then to transfer it to the document. In this case, the layers on the transfer film must be in reverse order to that which is desired later on the document.

Fig. 2 zeigt eine mögliche Ausführungsform eines derartigen Folienmaterials, wobei die dargestellte Transferfolie 20 die Form eines Bandes aufweist.Fig. 2 shows a possible embodiment of such a sheet material, wherein the illustrated transfer sheet 20 has the shape of a band.

Der Träger 7, beispielsweise eine transparente Kunststofffolie, wird in einem ersten Schritt, sofern notwendig, mit einer Trennschicht 8 versehen, welche dafür sorgt, dass der Schichtaufbau des Sicherheitselements 1 nach dem Übertrag auf das Sicherheitsdokument von dem Träger 7 abgelöst werden kann. Auf die Trennschicht 8 wird anschließend eine erste im sichtbaren Spektralbereich teiltransparente Abdeckschicht 6 aufgebracht, gefolgt von einer Magnetschicht 5. Die Abdeckschicht 6 ist in diesem Beispiel als gerasterte Schicht mit einer konstanten Rasterweite dargestellt. Über der Magnetschicht 5 wird schließlich eine Kleberschicht 9 vorgesehen, welche für eine Befestigung des Schichtaufbaus 21 auf dem Dokument sorgt. Hierbei kann es sich beispielsweise um Heißschmelzkleber oder auch strahlungshärtbare Kleber handeln.The carrier 7, for example a transparent plastic film, is provided in a first step, if necessary, with a separating layer 8, which ensures that the layer structure of the security element 1 can be detached from the carrier 7 after transfer to the security document. A first cover layer 6, which is partially transparent in the visible spectral range, is then applied to the separating layer 8, followed by a magnetic layer 5. The covering layer 6 is shown in this example as a screened layer with a constant screen ruling. Finally, an adhesive layer 9 is provided over the magnetic layer 5, which provides for attachment of the layer structure 21 on the document. This may be, for example, hot melt adhesive or radiation-curable adhesive.

In manchen Fällen kann es vorteilhaft sein, den Träger 7 ebenfalls auf dem Dokument als Schutzschicht zu belassen. In diesem Fall darf selbstverständlich keinesfalls eine Trennschicht 8 auf dem Trägermaterial vorgesehen sein. Vielmehr müssen zusätzliche Maßnahmen ergriffen werden, dass der Schichtaufbau des Elements 1 eine gute Haftung zur Trägerschicht 7 aufweist.In some cases, it may be advantageous to leave the carrier 7 also on the document as a protective layer. In this case, of course, no separation layer 8 may be provided on the substrate. Rather, additional measures must be taken that the layer structure of the element 1 has a good adhesion to the carrier layer 7.

Sollen mit Hilfe einer solchen Transferfolie platziert etikettenartige Sicherheitselemente übertragen werden, so kann die Transferfolie entweder vollflächig mit dem Sicherheitselementschichtaufbau versehen und dieser nur in den gewünschten Bereichen, z.B. durch gezielte Aktivierung des Klebers aus der vollflächigen Beschichtung herausgelöst und übertragen werden. Alternativ kann das Trägermaterial bereits in voneinander beabstandeten Bereichen mit den gewünschten Einzelelementen versehen werden.If label-like security elements are to be transferred with the aid of such a transfer film, then the transfer film can either be provided with the security element layer structure over its full area and can only be applied in the desired areas, e.g. be removed and transferred by targeted activation of the adhesive from the full-surface coating. Alternatively, the carrier material can already be provided in spaced-apart areas with the desired individual elements.

Die im Folgenden erläuterten Schichtfolgen des Sicherheitselements können selbstverständlich alle auf einer derartigen Transferfolie erzeugt und anschließend auf das Dokument übertragen werden. Zur übersichtlicheren Darstellung werden jedoch lediglich Sicherheitselemente gezeigt und erläutert, die im Wesentlichen aus einer Trägerschicht und hierauf vorgesehenen Schichten für die Echtheitskennzeichnung bestehen. Derartige Sicherheitselemente werden meist zusammen mit der Trägerfolie auf bzw. in dem Sicherheitsdokument befestigt, wie z.B. Sicherheitsfäden oder Etiketten.Of course, the layer sequences of the security element explained below can all be generated on such a transfer film and subsequently transferred to the document. For clarity, however, only security elements are shown and explained, which consist essentially of a carrier layer and layers provided thereon for the authenticity marking. Such security elements are usually fastened together with the carrier foil on or in the security document, such as e.g. Security threads or labels.

Fig. 3 zeigt den Schichtaufbau eines erfindungsgemäßen Sicherheitselements in der einfachsten Ausführungsform. Der Träger4 ist hier vollflächig mit einer Magnetschicht 5 versehen, über welcher eine Schicht 6 in Form eines Rasters vorgesehen ist, wobei die Rasterelemente aus opakem Material bestehen. Diese gerasterte Schicht 6 muss am fertigen Dokument dem Betrachter zugewandt sein, um den erfindungsgemäßen Effekt der Abdeckung der Magnetschicht 5 gewährleisten zu können.Fig. 3 shows the layer structure of a security element according to the invention in the simplest embodiment. The carrier 4 is provided here over its entire surface with a magnetic layer 5 over which a layer 6 in the form of a grid is provided, wherein the grid elements are made of opaque material. This screened layer 6 must face the viewer on the finished document in order to be able to ensure the effect according to the invention of covering the magnetic layer 5.

Wird das Sicherheitselement als Sicherheitsfaden eingesetzt, so kann es sinnvoll sein, das Magnetmaterial auch auf der dem Raster 6 gegenüberliegenden Seite abzudecken. Hierfür kann entweder zwischen Magnetschicht 5 und Träger 4 oder auf der gegenüberliegenden Oberfläche des Trägers 4 eine weitere Rasterschicht oder auch eine vollflächige, vorzugsweise weiße oder helle Druckschicht, vorgesehen werden. Die weiße bzw. helle Schicht bietet den Vorteil, dass der Faden von der Unterseite her farblich gut an das Papier angepasst ist und daher auf der Rückseite des Papiers an der Oberfläche praktisch nicht in Erscheinung tritt.If the security element is used as a security thread, then it may be useful to cover the magnetic material on the opposite side of the grid 6. For this purpose, either between magnetic layer 5 and carrier 4 or on the opposite Surface of the support 4, a further screen layer or a full-surface, preferably white or light print layer can be provided. The white or light layer has the advantage that the thread from the bottom color well adapted to the paper and therefore practically does not appear on the back of the paper on the surface.

Die Verwendung einer zweiten gerasterten Schicht dagegen hat den Vorteil, dass der Faden auf der Vorder- und Rückseite identisch aussieht und daher auf eine seitenrichtige Einbringung in das Papier verzichtet werden kann.On the other hand, the use of a second screened layer has the advantage that the thread on the front and back sides looks identical and therefore can be dispensed with a laterally correct introduction into the paper.

Derartige zusätzliche Abdeckmaßnahmen können selbstverständlich auch bei den übrigen Ausführungsformen eingesetzt werden.Such additional covering measures can of course also be used in the other embodiments.

Fig. 4 zeigt ein Sicherheitselement mit der bereits anhand von Fig. 3 erläuterten Schichtfolge. Die Magnetschicht 5 ist im vorliegenden Fall allerdings zusätzlich mit Aussparungen 10 in Form von Zeichen, Mustern oder dergleichen versehen. Handelt es sich um ein Sicherheitseiament, welches in eine Papierschicht eingebettet wird, so wird der Träger 4 vorteilhafterweise transparent oder zumindest transluzent ausgeführt. Auf diese Weise können die Aussparungen 10 bei Betrachtung im Durchlicht als stark kontrastierende Zeichen in der durch das opake Magnetmaterial 5 gebildeten Umgebung erkannt werden. Die Rasterelemente der Schicht 6 im Bereich der Aussparungen 10 beeinträchtigen diesen Effekt kaum. Bei Betrachtung im Auflicht sorgt das Raster 6 jedoch zusätzlich für eine Verschleierung der Aussparungen 10, so dass diese praktisch nicht in Erscheinung treten. Wie bereits diskutiert, reicht die gerasterte Schicht 6 auch aus, das dunkle Erscheinungsbild der Magnetschicht 5 zu verdecken.FIG. 4 shows a security element with the layer sequence already explained with reference to FIG. 3. However, in the present case, the magnetic layer 5 is additionally provided with recesses 10 in the form of characters, patterns or the like. If it is a Sicherheitsseiament which is embedded in a paper layer, the carrier 4 is advantageously carried out transparent or at least translucent. In this way, the recesses 10 when viewed in transmitted light can be recognized as strongly contrasting characters in the environment formed by the opaque magnetic material 5. The grid elements of the layer 6 in the region of the recesses 10 hardly impair this effect. When viewed in reflected light, however, the grid 6 additionally obscures the recesses 10, so that they practically do not appear. As already discussed, the screened layer 6 is also sufficient to mask the dark appearance of the magnetic layer 5.

Fig. 5 zeigt eine weitere Variante des erfindungsgemäßen Sicherheitselements, welches, wie bereits anhand von Fig. 4 erläutert, aus einer Trägerschicht 4, einer Magnetschicht 5 mit Aussparungen 10 in Form von visuell erkennbaren Informationen sowie einer gerasterten Schicht 6 besteht. Im Bereich der Aussparungen 10 wurde jedoch die Rasterweite derSchicht 6 verändert. Fig. 5 zeigt den Fall, dass die Rasterweite a im Bereich des magnetischen Materials größer ist als die Rasterweite b im Bereich der Aussparungen 10. Der umgekehrte Fall, dass die Rasterweite a kleiner ist als die Rasterweite b, ist selbstverständlich ebenso möglich. Je nach Wahl der Rasterweiten a, b können die Aussparungen 10 in der Magnetschicht 5 mehr hervorgehoben oder verborgen werden.FIG. 5 shows a further variant of the security element according to the invention, which, as already explained with reference to FIG. 4, consists of a carrier layer 4, a magnetic layer 5 with recesses 10 in the form of visually recognizable information and a screened layer 6. In the area of the recesses 10, however, the screen width of the layer 6 was changed. Fig. 5 shows the case that the screen width a in the region of the magnetic material is greater than the screen width b in the region of the recesses 10. The opposite case, that the screen width a is smaller than the screen width b, is of course also possible. Depending on the choice of screen widths a, b, the recesses 10 in the magnetic layer 5 can be more emphasized or hidden.

Fig. 6 zeigt eine Ausführungsform des erfindungsgemäßen Sicherheitselementes 2, bei welcher die Magnetschicht 5 vollflächig auf dem Träger 4 vorliegt und lediglich die gerasterte Abdeckschicht 6 lesbare Informationen 12 enthält. Diese werden durch eine Variation der Rasterweite dargestellt. Fig. 6 zeigt erneut den Fall, dass die Rasterweite a größer ist als die Rasterweite b im Bereich der Information 12. Der umgekehrte Fall ist selbstverständlich auch hier möglich. Dieses Sicherheitselement hat den Vorteil, dass die Magnetschicht 5 ausreichend abgedeckt wird, gleichzeitig jedoch visuell und/oder maschinell erkennbare Informationen vorliegen, die auf einfache Weise im gleichen Arbeitsgang mit dem Aufbringen der Abdeckschicht 6 erzeugt werden.FIG. 6 shows an embodiment of the security element 2 according to the invention, in which the magnetic layer 5 is present over the entire surface of the carrier 4 and only the screened covering layer 6 contains readable information 12. These are represented by a variation of the screen ruling. Fig. 6 again shows the case that the screen ruling a is greater than the raster width b in the area of the information 12. The reverse case is of course also possible here. This security element has the advantage that the magnetic layer 5 is adequately covered, but at the same time visually and / or mechanically recognizable information is present, which is generated in a simple manner in the same operation with the application of the covering layer 6.

In Fig. 7 ist eine Ausführungsform des erfindungsgemäßen Sicherheitselements dargestellt, welches neben einem magnetischen Echtheitsmerkmal ein optisch variables, visuell prüfbares Echtheitsmerkmal aufweist. Das Sicherheitselement wird hier im Längsschnitt gezeigt, um die besondere Ausgestaltung der Magnetschicht 5 in Form einer Codierung besser veranschaulichen zu können. Der Träger 4 ist hierfür auf einer seiner Oberflächen mit dem magnetischen Echtheitsmerkmal 5 versehen, welches im vorliegenden Fall in Form eines magnetischen Codes vorliegt. Über der Magnetschicht 5 ist die erfindungsgemäße Abdeckschicht 6 angeordnet. Auf der gegenüberliegenden Oberfläche des Trägers 4 befindet sich eine Schicht 13, deren vom Träger 4 abgewandte Oberfläche mit einer Beugungsstruktur in Form einer Reliefstruktur versehen ist. Um die in dieser Reliefstruktur gespeicherte Information sichtbar machen zu können, ist die Schicht 13 mit einer Reflexionsschicht 14 versehen.FIG. 7 shows an embodiment of the security element according to the invention which, in addition to a magnetic authenticity feature, has an optically variable, visually testable authenticity feature. The security element is shown here in longitudinal section to better illustrate the particular embodiment of the magnetic layer 5 in the form of a coding can. For this purpose, the carrier 4 is provided on one of its surfaces with the magnetic authenticity feature 5, which in the present case is in the form of a magnetic code. Over the magnetic layer 5, the cover layer 6 according to the invention is arranged. On the opposite surface of the carrier 4 is a layer 13, the surface facing away from the carrier 4 is provided with a diffraction structure in the form of a relief structure. In order to be able to visualize the information stored in this relief structure, the layer 13 is provided with a reflection layer 14.

Je nachdem, ob das Element in Transmission oder lediglich jeweils nurvon einer Seite her überprüfbar sein soll, können die einzelnen Schichten unterschiedlich ausgestaltet werden. Für den Fall, dass das Element in Transmission prüfbarsein soll, muss der Träger 4 aus einem transparenten oder zumindest transluzenten Material bestehen. Die Reflexionsschicht 14 muss ebenfalls eine zumindest teildurchlässige Schicht sein. Sie kann beispielsweise aus einem transparenten Lack bestehen, der einen zur Schicht 13 unterschiedlichen Brechungsindex aufweist oder aber aus einer semitransparenten Metallschicht.Depending on whether the element should be verifiable in transmission or only in each case only from one side, the individual layers can be configured differently. In the event that the element is to be tested in transmission, the carrier 4 must be made of a transparent or at least translucent material. The reflection layer 14 must also be an at least partially transparent layer. It may, for example, consist of a transparent lacquer which has a different refractive index to the layer 13 or else of a semitransparent metal layer.

Eine besonders vorteilhafte Ausführungsform ergibt sich allerdings, wenn die Reflexionsschicht 14 als Raster ausgebildet ist, wobei die Rasterelemente aus einer opaken Metallschicht bestehen. In diesem Fall kann einerseits die optisch variable Information in Reflexion beobachtet werden und andererseits die auf der gegenüberliegenden Oberfläche des Trägers 4 aufgebrachte Magnetschicht 5. Dies ist von besonderem Interesse, wenn die Magnetschicht 5, nicht wie in Fig. 7 gezeigt, in Form einer Codierung auf dem Träger 4 vorliegt, sondern Aussparungen 10 in Form von Zeichen aufweist, wie in den Fig. 4 und 5 dargestellt. Die Beugungsstruktur 13 bzw. die Reflexionsschicht 14 dienen hier als zusätzliche Abdeckschicht für die Magnetschicht 5, insbesondere wenn das Sicherheitselement als Fenstersicherheitsfaden in Sicherhefspapier eingebettet wird. Ist die Beugungsschicht 13 mit der durchlässigen Reflexionsschicht 14 in den Fensterbereichen dem Betrachter zugewandt, wird dieser im Auflicht in erster Linie die optisch variablen Effekte erkennen. Erst im Duichlichtwerden die in der Magnetschicht 5 vorhandenen Aussparungen 10 durch die Rasterlücken hindurch sichtbar. Die über der Magnetschicht 5 angeordnete gerasterte Schicht 6 dient hier dazu, den Faden auch bei Betrachtung der Rückseite des Papiers unauffällig zu gestalten, d.h. die dunkle Magnetschicht abzudecken.A particularly advantageous embodiment, however, results if the reflection layer 14 is formed as a grid, wherein the grid elements consist of an opaque metal layer. In this case, on the one hand, the optically variable information can be observed in reflection and, on the other hand, the magnetic layer 5 applied on the opposite surface of the carrier 4. This is of particular interest when the magnetic layer 5, not as shown in FIG. 7, is in the form of a coding is present on the support 4, but has recesses 10 in the form of characters, as shown in FIGS. 4 and 5. The diffraction structure 13 or the reflection layer 14 serve here as an additional covering layer for the magnetic layer 5, in particular if the security element is embedded as a window security thread in security paper. If the diffraction layer 13 faces the viewer with the transmissive reflection layer 14 in the window areas, it will primarily recognize the optically variable effects in incident light. Only in Duichlicht become present in the magnetic layer 5 Recesses 10 visible through the grid gaps. The screened layer 6 arranged above the magnetic layer 5 serves here to make the thread inconspicuous even when viewing the back side of the paper, ie to cover the dark magnetic layer.

Es ist auch denkbar, die Reflexionsschicht 14 als opake Metallschicht auszubilden. Ist dem Beobachter in diesem Fall die Abdeckschicht 6 zugewandt, so kann er die Beugungsstrukturnurin den magnetschicht- und abdeckschichtfreien Bereichen beobachten. Weist die Magnetschicht 5 beispielsweise Aussparungen in Form von Zeichen auf, so zeigen diese Zeichen den optisch variablen Effekt der Schicht 13. Bei Betrachtung des Elements von der Rückseite erkennt der Betrachter allerdings lediglich die optisch variable Information. Die opake Reflexionsschicht 14 verhindert ein Erkennen der Magnetschicht 5 auf der gegenüberliegenden Trägeroberfläche.It is also conceivable to form the reflection layer 14 as an opaque metal layer. If the observer in this case faces the covering layer 6, then he can observe the diffraction structure urine in the regions free of magnetic layer and covering layer. If the magnetic layer 5 has, for example, recesses in the form of characters, these characters show the optically variable effect of the layer 13. However, when the element is viewed from the back, the observer only recognizes the optically variable information. The opaque reflection layer 14 prevents detection of the magnetic layer 5 on the opposite support surface.

In manchen Situationen kann es vorteilhaft sein, wenn die Oberflächen des Elements lediglich getrennt voneinander geprüft werden können. In diesem Fall muss das Trägermaterial 4 opak ausgeführt sein. Die Reflexionsschicht 14 kann in diesem Fall beliebig gestaltet werden.In some situations, it may be advantageous if the surfaces of the element can only be tested separately. In this case, the substrate 4 must be made opaque. The reflection layer 14 can be designed arbitrarily in this case.

Für alle genannten Beispiele gilt zudem, dass die Beugungsstruktur nicht notwendigerweise in eine separate Schicht, wie eine Lackschicht, eingeprägtwerden muss. Sie kann selbstverständlich auch direkt in die Oberfläche des Trägermaterials 4 eingebracht werden.In addition, for all the examples mentioned, the diffraction structure does not necessarily have to be embossed in a separate layer, such as a lacquer layer. Of course, it can also be introduced directly into the surface of the carrier material 4.

Eine weitere Ausführungsform gemäß der Erfindung sieht vor, alle sicherheitstechnisch relevanten Schichten auf einer Oberfläche des Trägers 4 anzuordnen, wie in Fig. 8 dargestellt. Hier wird auf dem Träger 4 zuerst die Magnetschicht 5 vorgesehen, die im vorliegenden Fall Aussparungen 10 in Form von Zeichen oder Mustern aufweist. Darüber befindet sich eine transparente Lackschicht 15 mit wenigstens einem Lumineszenzstoff, der bei Anregung mit Strahlung außerhalb und/oder innerhalb des sichtbaren Spektralbereichs emittiert. Darüber ist die Abdeckschicht 6, hier in Form eines regelmäßigen Rasters dargestellt, angeordnet. Die letzte Schicht bildet eine Lackschicht 13, in welche Beugungsstrukturen in Form einer Reliefstruktur eingebracht sind sowie eine Reflexionsschicht 14. Die Reflexionsschicht 14 muss im vorliegenden Fall ebenfallsteildurchlässig ausgeführt sein, um eine visuelle und/oder maschinelle Erkennbarkeit der in der Magnetschicht 5 eingebrachten Aussparungen 10 im Durchlicht zu ermöglichen. Wie bereits erwähnt, kann sie aus einer semitransparenten Metallschicht bzw. einer gerasterten opaken Metallschicht oder auch einer transparenten Lackschicht mit unterschiedlichem Brechungsindex bestehen. Die lumineszierende Schicht 15 kann selbstverständlich auch mehrere Lumineszenzstoffe enthalten bzw. mehrere ineinander übergehende Bereiche unterschiedlicher Emissionswellenlänge aufweisen, so dass eine Regenbogenfluoreszenz entsteht. Auch ein Aufbringen in Form von Mustern ist möglich. Um das Sicherheitselement vor Umwelteinflüssen und mechanischen Belastungen zu schützen, kann es zusätzlich noch mit einer Schutzschicht, z.B. einer transparenten Lackschicht versehen sein, die allerdings in der Figur nicht gezeigt ist.A further embodiment according to the invention provides to arrange all safety-related layers on a surface of the carrier 4, as shown in Fig. 8. Here, the magnetic layer 5 is first provided on the support 4, which has recesses 10 in the form of characters or patterns in the present case. Above is a transparent lacquer layer 15 with at least one luminescent substance which emits when excited with radiation outside and / or within the visible spectral range. In addition, the cover layer 6, shown here in the form of a regular grid, arranged. The last layer forms a lacquer layer 13, in which diffraction structures in the form of a relief structure are introduced, and a reflection layer 14. The reflection layer 14 must be made in the present case also subfloor-part permeable to a visual and / or machine recognizability of the introduced in the magnetic layer 5 recesses 10 in To allow transmitted light. As already mentioned, it may consist of a semitransparent metal layer or a screened opaque metal layer or else a transparent lacquer layer with different refractive index. The luminescent layer 15 can, of course, also contain a plurality of luminescent substances or have a plurality of mutually merging regions of different emission wavelength, so that a rainbow fluorescence is produced. An application in the form of patterns is possible. In order to protect the security element from environmental influences and mechanical loads, it may additionally be provided with a protective layer, e.g. be provided a transparent lacquer layer, which, however, is not shown in the figure.

Fig. 9 zeigt eine weitere Variante der Erfindung, bei welcher die Abdeckschicht jedoch nicht mehr aus einer gerasterten Schicht mit opaken Rasterelementen besteht. Stattdessen wird eine semitransparente Schicht 16, vorzugsweise eine semitransparente Metallschicht verwendet, welche auf die Magnetschicht 5 aufgebracht wird. Wie bereits im Zusammenhang mit der gerasterten Abdeckschicht erläutert, kann auch die semitransparente Schicht benutzt werden, um visuell erkennbare Informationen einzubringen.FIG. 9 shows a further variant of the invention, in which, however, the covering layer no longer consists of a screened layer with opaque raster elements. Instead, a semi-transparent layer 16, preferably a semi-transparent metal layer is used, which is applied to the magnetic layer 5. As already explained in connection with the screened cover layer, the semitransparent layer can also be used to introduce visually recognizable information.

Fig. 10 zeigt den Fall, dass die Magnetschicht 5 mit Aussparungen 10 in Form von Zeichen, Mustern oder dergleichen versehen ist und darüber die semitransparente Schicht 16 angeordnet wird. Auch hier sind die Zeichen im Durchlicht als stark zu ihrer Umgebung kontrastierende Informationen erkennbar, während sie bei Betrachtung im Auflicht kaum in Erscheinung treten.FIG. 10 shows the case that the magnetic layer 5 is provided with recesses 10 in the form of characters, patterns or the like, and above which the semitransparent layer 16 is disposed. Again, the characters in transmitted light are recognizable as strongly contrasting with their environment information, while they hardly appear when viewed in reflected light.

Fig. 11 zeigt eine weitere Ausführungsform des erfindungsgemäßen Sicherheitselements 2. In diesem Fall ist derTräger 4 auf einer Seite mit einer Schicht 20 versehen, die von einer gerasterten Abdeckschicht 6, hier in Form eines regelmäßigen Rasters dargestellt, abgedeckt wird. Auf der gegenüberliegenden Seite des Trägers 4 ist eine identische gerasterte Schicht 6 angeordnet, die dafür sorgt, dass das Sicherheitselement von beiden Seiten ein identisches Erscheinungsbild liefert. Die zweite auf der Unterseite des Trägers 4 aufgebrachte gerasterte Schicht 6 könnte alternativ jedoch auch zwischen der Schicht 20 und dem Träger 4 angeordnet sein oder vollständig fehlen. Bei der Schicht 20 handelt es sich um eine vollflächige Schicht, die farblich einheitlich gestaltet ist; sich aber aus Materialien mit unterschiedlichen Eigenschaften zusammensetzt.11 shows a further embodiment of the security element 2 according to the invention. In this case, the support 4 is provided on one side with a layer 20 which is covered by a screened covering layer 6, here in the form of a regular grid. On the opposite side of the carrier 4, an identical screened layer 6 is arranged, which ensures that the security element provides an identical appearance from both sides. However, the second screened layer 6 applied on the underside of the carrier 4 could alternatively also be arranged between the layer 20 and the carrier 4 or be completely absent. The layer 20 is a full-surface layer, which is designed in a uniform color; but is composed of materials with different properties.

Die Fig. 12 bis 14 zeigen unterschiedliche Ausführungsformen dieser Schicht 20 in Aufsicht. In diesen Beispielen bildet die Schicht 20 eine zusammenhängende Schicht, die sich über zumindest einen Teilbereich des Trägers 4 erstreckt.FIGS. 12 to 14 show different embodiments of this layer 20 in plan view. In these examples, the layer 20 forms a continuous layer that extends over at least a portion of the support 4.

Gemäß Fig. 12 setzt sich die Schicht 20 aus alternierend angeordneten Bereichen 5 und 21 zusammen, die aus Zwecken der Anschaulichkeit in der Figur durch Trennstriche voneinander getrennt sind. Tatsächlich können diese Bereiche visuell nicht voneinander getrennt werden, da sie farblich identisch gestaltet sind. In den Bereichen 5 ist jedoch Magnetmaterial angeordnet, das maschinell nachgewiesen werden kann, während in den Zwischenbereichen 21 ein Material gleicher Farbe ohne magnetische Eigenschaften angeordnet ist. Die magnetischen Bereiche 5 können dabei eine Codierung darstellen. Wie in Fig. 12 gezeigt, können sowohl die magnetischen Bereiche 5 als auch die nichtmagnetischen Bereiche 21 Aussparungen 10 in Form von lesbaren Informationen aufweisen. Auf diese Aussparungen 10 kann jedoch auch verzichtet werden.According to FIG. 12, the layer 20 is composed of alternately arranged regions 5 and 21 which, for purposes of clarity, are separated from one another in the figure by dividing lines. In fact, these areas can not be visually separated because they are the same color. In the areas 5, however, magnetic material is arranged, which can be detected by machine, while in the intermediate regions 21, a material of the same color is arranged without magnetic properties. The magnetic regions 5 can represent a coding. As shown in Fig. 12, both the magnetic portions 5 and the non-magnetic portions 21 may have recesses 10 in the form of readable information. However, these recesses 10 can also be dispensed with.

Fig. 13 zeigt eine andere gegenseitige Anordnung der magnetischen Bereiche 5 und der nichtmagnetischen Bereiche 21. Hier ist das Magnetmaterial 5 passerhaltig zu den in den nichtmagnetischen Bereichen vorgesehenen Aussparungen 10 im Randbereich des Sicherheitselements angeordnet. In Fig. 14 sind die magnetischen Bereiche 5 als vollflächige, parallel zu den Aussparungen 10 verlaufende, sogenannte "Magnetspuren" dargestellt. Alternativ ist es auch denkbar, diese Spuren zu unterbrechen und so eine magnetische Codierung, die parallel zu den Aussparungen 10 angeordnet ist, zu erzeugen. Die Zwischenbereiche der magnetischen Codierung müssten in diesem Fall ebenfalls mit der nichtmagnetischen Schicht 21 aufgefülltwerden.Fig. 13 shows another mutual arrangement of the magnetic portions 5 and the non-magnetic portions 21. Here, the magnetic material 5 is passerhaltig to the provided in the non-magnetic regions recesses 10 in the edge region of the security element arranged. In Fig. 14, the magnetic portions 5 are shown as full-surface, parallel to the recesses 10 extending, so-called "magnetic tracks". Alternatively, it is also conceivable to interrupt these tracks and thus to generate a magnetic coding which is arranged parallel to the recesses 10. The intermediate regions of the magnetic coding would in this case also have to be filled with the non-magnetic layer 21.

Fig. 14 zeigt ebenfalls eine Ausführungsform der Schicht 20 in Aufsicht. Hier bilden die magnetischen Bereiche 5 ebenfalls eine Codierung, deren Zwischenbereiche durch eine nichtmagnetische Schicht 21 identischer Farbe ausgefüllt.werden. Die Aussparungen 10 befinden sich in diesem Beispiel lediglich in den nichtmagnetischen Bereichen 21.Fig. 14 also shows an embodiment of the layer 20 in plan view. Here, the magnetic regions 5 also form a coding whose intermediate areas are filled by a non-magnetic layer 21 of identical color. The recesses 10 are in this example only in the non-magnetic regions 21st

Fig. 15 zeigt schließlich ein weitere mögliche Ausführungsform der Schicht 20. In diesem Beispiel ist die Schicht 20 nicht zusammenhängend ausgeführt, sondern setzt sich aus voneinander getrennten magnetischen Bereichen 5 und nichtmagnetischen Bereichen 21 zusammen. Wie in Fig. 15 dargestellt, können die nichtmagnetischen Bereiche 21, die farblich jedoch identisch zu den magnetischen Bereichen 5 gestaltet sind, beispielsweise lesbare Informationen, Muster oder dergleichen darstellen. Diese können auch je nach Abstand zwischen den magnetischen Bereichen 5 in der Größe bzw. dem Informationsgehalt variieren.Finally, FIG. 15 shows another possible embodiment of the layer 20. In this example, the layer 20 is not contiguous but consists of separate magnetic regions 5 and non-magnetic regions 21. As shown in FIG. 15, the non-magnetic regions 21 which are color-matched, however, to the magnetic regions 5 may constitute, for example, readable information, patterns, or the like. These can also vary depending on the distance between the magnetic regions 5 in size or the information content.

Für alle Ausführungsformen gilt, dass die gezeigten Darstellungsvarianten für die Magnetschicht (z. B. magnetische Codierung) und der Abdeckschicht (z. B. unterschiedliche Rasterweiten) nach Belieben im Rahmen der Erfindung miteinander kombiniert werden können. Auch zusätzliche Merkmale, wie eine optisch variable Schicht, eine Fluoreszenzschicht oder eine andere zusätzliche Merkmalsschicht können in alle gezeigten Ausführungsformen integriert werden. Bei den optisch variablen Schichten kann es sich, wie in den Figuren gezeigt, um geprägte Beugungsstrukturen, die beispielsweise Kinegramme, Moviegramme oder Hologramme darstellen, handeln. Selbstverständlich können auch andere optisch variable Schichten, wie beispielsweise transparente oder opake Interferenzschichten Anwendung finden. Diese können direkt auf das Element aufgedampft oder aber in Form von Pigmenten einer Druckfarbe beigemischt werden. Opake Effektfarben eignen sich insbesondere auch für die Erzeugung der gerasterten Abdeckschicht.For all embodiments, the illustrated variants for the magnetic layer (eg magnetic coding) and the covering layer (eg different screen widths) can be combined with one another as desired within the scope of the invention. Additional features such as an optically variable layer, a fluorescent layer, or other additional feature layer may be incorporated into all embodiments shown. As shown in the figures, the optically variable layers can be embossed diffraction structures, which represent, for example, kinegrams, moviegrams or holograms. Of course, other optically variable layers, such as transparent or opaque interference layers find application. These can be vapor-deposited directly onto the element or mixed in the form of pigments of an ink. Opaque effect colors are also suitable in particular for the production of the screened covering layer.

Die Herstellung der erfindungsgemäßen Sicherheitselemente erfolgt auf einfache Weise, indem ein Trägermaterial, wie z.B. eine Kunststofffolie oder Papier, mit den Echtheitsmerkmalen versehen und anschließend in einzelne Elemente der gewünschten Form geschnitten wird. Bei der Verwendung als Etikett muss eine der Oberflächen zusätzlich mit Klebstoff beschichtet werden. Soll lediglich der Elementschichtaufbau ohne Trägermaterial auf dem Dokument vorgesehen werden, wird ein separates Transferband, z.B. eine Heißprägefolie, mit dem Elementschichtaufbau vorbereitet und anschließend Teile hieraus z. B. unter Wärme- und Druckeinwirkung auf das Dokument oder das in Endlosform vorliegende Dokumentenmatehal übertragen. Die Sicherheitselemente können auch bereits mit ihren endgültigen Umrisskonturen auf dem Transferband erzeugt und anschließend übertragen werden. Die Magnetschicht kann entweder aufgedruckt (z.B. im Siebdruck) oder mit Beschichtungsverfahren aufgebracht werden. Weist die Magnetschicht Aussparungen in Form von Zeichen oder Mustern etc. auf oder wird sie als magnetischer Code ausgebildet, so kann gemäß einer weiteren Ausführungsform in den magnetschichtfreien Zwischenbereichen eine weitere visuell und/oder maschinell lesbare Information angeordnetwerden. Sie kann beispielsweise von Schriftzeichen oder ähnlichem gebildet werden, die mit einer metallpigmenthaltigen Druckfarbe oder durch Metallisierungsverfahren, wie hot stamping etc. erzeugt werden.The preparation of the security elements according to the invention is carried out in a simple manner by using a carrier material, such as e.g. a plastic film or paper, provided with the authenticity features and then cut into individual elements of the desired shape. When used as a label, one of the surfaces must be additionally coated with adhesive. If only the element layer construction without carrier material is to be provided on the document, a separate transfer belt, e.g. a hot stamping foil, prepared with the element layer structure and then parts thereof z. B. transmitted under heat and pressure on the document or the present in endless form document matehal. The security elements can also be generated with their final outline contours on the transfer belt and then transferred. The magnetic layer may be either printed (e.g., screen printed) or coated. If the magnetic layer has recesses in the form of characters or patterns, etc., or if it is formed as a magnetic code, according to a further embodiment, further visually and / or machine-readable information can be arranged in the magnetic-layer-free intermediate regions. It can be formed, for example, of characters or the like which are produced with a metal pigment-containing printing ink or by metallization processes such as hot stamping, etc.

Die Abdeckschicht kann ebenfalls drucktechnisch erzeugt werden. Im Fall der gerasterten Abdeckschicht eignen sich insbesondere metallpigmenthaltige, weiße oder helle Druckfarben. Es können aber auch Druckfarben verwendet werden, die spezielle Farbpigmente, wie optisch variable Interferenzschichtpigmente mit Körperfarben enthalten.The cover layer can also be produced by printing technology. In the case of the screened covering layer, metal-pigment-containing, white or bright printing inks are particularly suitable. However, it is also possible to use printing inks which contain special color pigments, such as optically variable interference-layer pigments with body colors.

Wird für die Abdeckschicht allerdings eine Vollmetallschichtverwendet, so muss diese über Metallisierungsverfahren aufgebracht werden. Die semitransparente vollflächige Abdeckschicht kann auf einfache Weise im Vakuummetallisierungsverfahren erzeugtwerden. Eine unterbrochene Metallschicht lässt sich unter Verwendung von Masken ebenfalls im Vakuumdampfverfahren erzeugen. Alternativ kann die Metallschicht im ersten Schritt vollflächig aufgebracht und anschließend über Ätztechniken in den gewünschten Bereichen wieder entfernt werden. Eine weitere Möglichkeit bieten Verfahren, bei welchen in den später zu entfernenden Bereichen eine Antihaftschicht aufgebracht wird. Nach der vollflächigen Beschichtung mit Metall wird die Antihaftschicht chemisch gelöst und damit die darüberliegende Metallschicht entfernt.However, if a full metal layer is used for the cover layer, it must be applied via metallization methods. The semi-transparent full-face covering layer can be easily produced in the vacuum metallization process. An interrupted metal layer can also be produced using masks using the vacuum vapor method. Alternatively, the metal layer in the first step can be applied over the entire surface and then removed again by etching techniques in the desired areas. Another possibility is provided by methods in which an anti-adhesion layer is applied in the areas to be removed later. After the full-surface coating with metal, the non-stick layer is chemically dissolved, thus removing the overlying metal layer.

Werden die erfindungsgemäßen Sicherheitselemente als Sicherheitsfäden verwendet, so kann es vorteilhaft sein, das Sicherheitselement symmetrisch aufzubauen. In diesem Fall werden zwei Träger mit der gleichen Schichtfolge hergestellt und so miteinander verklebt, dass die Merkmalsschichten zwischen die Träger zu liegen kommen. Auf diese Weise werden sie vor schädlichen Umwelteinflüssen, wie beispielweise Feuchtigkeit oder Korrosion geschützt. Häufig genügt allerdings auch, die sicherheitstechnisch relevanten Schichten auf einem Träger aufzubringen und die Schichten in einem letzten Schritt mit einer schützenden Lackschicht zu versehen oder eine schützende Folienschicht aufzulaminieren.If the security elements according to the invention are used as security threads, then it may be advantageous to construct the security element symmetrically. In this case, two carriers are produced with the same sequence of layers and so with each other glued that the feature layers come to lie between the carrier. In this way, they are protected from harmful environmental influences, such as moisture or corrosion. Often, however, it is also sufficient to apply the safety-relevant layers to a support and to provide the layers with a protective lacquer layer in a last step or to laminate a protective film layer.

Ebenso kann es sinnvoll sein, unterhalb der Magnetschicht ebenfalls eine Abdeckschicht vorzusehen, so dass das Sicherheitselementvon beiden Seiten das gleiche Erscheinungsbild zeigt.Likewise, it may be useful to also provide a cover layer below the magnetic layer, so that the security element shows the same appearance from both sides.

Die gezeigten und erläuterten Sicherheitselemente bzw. Sicherheitsdokumente können auch zur Absicherung unterschiedlichster Produkte verwendet werden. Diebstahlschutzetiketten beispielsweise, die meist über Spulen oder komplizierte elektronische Schaltkreise mit Überwachungsgeräten kommunizieren, können mit einem Sicherheitselement gemäß der Erfindung weiter abgesichert werden. Ebenso kann ein Sicherheitsdokument, beispielsweise ein Banknotenpapier, welches ein Sicherheitselement gemäß der Erfindung aufweist, als Echtheitszertifikat auf beliebigen Gegenständen, wie CD's, Büchern etc. appliziert werden.The illustrated and explained security elements or security documents can also be used to secure a wide variety of products. Anti-theft labels, for example, which communicate with monitors mostly via coils or complicated electronic circuits, can be further secured with a security element according to the invention. Likewise, a security document, for example a banknote paper which has a security element according to the invention, can be applied as a certificate of authenticity on any objects, such as CD's, books, etc.

Claims (20)

  1. A security element for protecting objects which has at least one mechanically testable magnetic layer and at least one further layer, characterized in that the further layer is a layer semitransparent in the visual spectral region and the semitransparent layer is disposed over the magnetic layer so as to cover the magnetic layer, and the semitransparent layer consists of a screen whose screen elements are opaque.
  2. A security element according to claim 1, characterized in that the opaque screen elements consist of a light printing ink, a printing ink containing metallic pigments, a metallic-effect ink or a metal layer.
  3. A security element according to claim 1 or 2, characterized in that visually and/or mechanically recognizable information is present in the screened layer.
  4. A security element according to claim 3, characterized in that the information is represented by variation of the screen width or the absence of screen elements in the form of the desired information.
  5. A security element for protecting objects which has at least one mechanically testable magnetic layer and at least one further layer, characterized in that the further layer is a layer semitransparent in the visual spectral region and the semitransparent layer is disposed over the magnetic layer so as to cover the magnetic layer, and the semitransparent layer is an all-over semitransparent layer.
  6. A security element according to claim 5, characterized in that the semitransparent layer is a semitransparent metal layer.
  7. A security element according to claim 6, characterized in that visually and/or mechanically recognizable information is present in the semitransparent metal layer.
  8. A security element according to at least one of claims 1 to 7, characterized in that a second opaque layer in the form of a screen or a semitransparent metal layer is disposed under the magnetic layer.
  9. A security element according to at least one of claims 1 to 8, characterized in that the magnetic layer has gaps in the form of characters, patterns or the like.
  10. A security element according to at least one of claims 1 to 8, characterized in that the magnetic layer is applied in the form of a coding, in particular a bar code.
  11. A security element according to claim 9 or 10, characterized in that further visually and/or mechanically recognizable information is disposed in the magnetic layer free areas of the code or in the gaps.
  12. A security element according to claim 11, characterized in that the magnetic layer free intermediate areas have a nonmagnetic layer having gaps in the form of patterns, characters or the like and having the same color as the magnetic layer.
  13. A security element according to at least one of claims 1 to 12, characterized in that the security element additionally has further security features such as luminescent substances, diffraction structures, interference layers, etc.
  14. A security element according to at least one of claims 1 to 13, characterized in that the security element is formed on a plastic foil optionally having the form of a thread or band.
  15. A security element according to at least one of claims 1 to 13, characterized in that the security element is designed in the form of a self-adhesive label.
  16. Foil material for producing security elements consisting of a plastic foil with at least one mechanically testable magnetic layer and at least one further layer disposed thereon, characterized in that the further layer is a layer semitransparent in the visual spectral region and the semitransparent layer is disposed over the magnetic layer so as to cover the magnetic layer, and the semitransparent layer consists of an all-over semitransparent layer or a screen whose screen elements are opaque.
  17. Foil material according to claim 16, characterized in that the foil material is formed as a transfer foil.
  18. Foil material according to at least one of claims 16 or 17, characterized in that it has diffraction structures in the form of a relief structure.
  19. A security document such as a bank note, security, ID card or the like, characterized in that it has a security element according to at least one of claims 1 to 15.
  20. A security document according to claim 19, characterized in that the security element is embedded at least partly in the security document.
EP98942617A 1997-07-24 1998-07-24 Safety document Expired - Lifetime EP0998396B2 (en)

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DE19731968A DE19731968A1 (en) 1997-07-24 1997-07-24 Security document
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AT (1) ATE211076T1 (en)
AU (1) AU9068898A (en)
DE (2) DE19731968A1 (en)
ES (1) ES2165700T5 (en)
ID (1) ID28306A (en)
PT (1) PT998396E (en)
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WO2016146551A1 (en) 2015-03-16 2016-09-22 Arjowiggins Security Security element and security document
DE102021005814A1 (en) 2021-11-23 2023-05-25 Giesecke+Devrient Currency Technology Gmbh See-through security element, data carrier and method of manufacture

Also Published As

Publication number Publication date
DE59802554D1 (en) 2002-01-31
EP0998396B1 (en) 2001-12-19
US6491324B1 (en) 2002-12-10
AU9068898A (en) 1999-02-16
DE19731968A1 (en) 1999-01-28
ES2165700T5 (en) 2007-04-16
CN1099968C (en) 2003-01-29
SI0998396T1 (en) 2002-06-30
SI0998396T2 (en) 2007-04-30
WO1999004983A1 (en) 1999-02-04
ATE211076T1 (en) 2002-01-15
PT998396E (en) 2002-06-28
JP2001510754A (en) 2001-08-07
RU2193975C2 (en) 2002-12-10
ES2165700T3 (en) 2002-03-16
ID28306A (en) 2001-05-10
EP0998396A1 (en) 2000-05-10
UA46909C2 (en) 2002-06-17
CN1264340A (en) 2000-08-23

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