EP3835075A1 - Élément de sécurité à caractéristique magnétique - Google Patents

Élément de sécurité à caractéristique magnétique Download PDF

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Publication number
EP3835075A1
EP3835075A1 EP21020007.7A EP21020007A EP3835075A1 EP 3835075 A1 EP3835075 A1 EP 3835075A1 EP 21020007 A EP21020007 A EP 21020007A EP 3835075 A1 EP3835075 A1 EP 3835075A1
Authority
EP
European Patent Office
Prior art keywords
motif
feature
magnetic
security element
magnetic feature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21020007.7A
Other languages
German (de)
English (en)
Inventor
Christoph Mengel
Yana Kisselova-Weckerle
Peter Schiffmann
Matthias Pfeiffer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giesecke and Devrient Currency Technology GmbH
Original Assignee
Giesecke and Devrient Currency Technology GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Giesecke and Devrient Currency Technology GmbH filed Critical Giesecke and Devrient Currency Technology GmbH
Publication of EP3835075A1 publication Critical patent/EP3835075A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/369—Magnetised or magnetisable materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/387—Special inks absorbing or reflecting ultraviolet light

Definitions

  • the invention relates to a security element with a magnetic feature which is used to protect security papers, documents of value and other data carriers.
  • the invention also relates to a method for producing such security elements, as well as a data carrier equipped with such a security element.
  • Data carriers such as value or identity documents, but also other objects of value such as branded items, are often provided with security elements for protection that allow the authenticity of the data carrier to be checked and at the same time serve as protection against unauthorized reproduction.
  • the security elements can be designed, for example, in the form of a security thread embedded in a bank note, a cover film for a bank note with a hole, an applied security strip, a self-supporting transfer element or also in the form of a feature area printed directly on a value document.
  • magnetically alignable effect pigments have also been used for some time, which are magnetically aligned in the form of a motif to be displayed, as for example in the printed matter WO 2009/033601 A1 described.
  • the invention is based on the object of further increasing the protection against forgery and the visual attractiveness of security elements with magnetically alignable magnetic pigments.
  • the blocking layer is advantageously designed to block the excitation of the luminescent layer and / or the emitted luminescent radiation of the excited luminescent layer.
  • the above-mentioned arrangement of luminescent layer and blocking layer relates to the excitation or viewing direction of the security element, so that the blocking layer blocks the excitation radiation for the luminescence layer or the luminescence radiation emitted by the luminescence layer.
  • the luminescent layer of the additional feature is advantageously recognizable even without excitation in the visible spectral range and then represents a component of the security element that contributes to the visual impression even with normal lighting.
  • the luminescent layer can also advantageously be provided that the luminescent layer cannot be recognized without excitation in the visible spectral range .
  • the luminescent layer can be, for example, transparent or the same color as a background layer, in particular a white paper background.
  • the luminescent layer is designed to emit luminescent radiation of different colors at different UV excitation wavelengths.
  • the luminescent layer can also be excited only in a partial range of the UV spectral range.
  • the luminescent layer can also consist of several sub-layers which have different visible colors, different excitation properties and / or different luminescent properties. The sub-layers can be arranged next to one another, one above the other or overlapping.
  • the luminescent layer can be a fluorescent layer and / or a phosphorescent layer, at least in partial areas.
  • the blocking layer is designed to block only excitation radiation from a partial range of the UV spectral range.
  • the blocking layer preferably blocks only shorter-wave excitation radiation, in particular only UV-C excitation radiation.
  • the invention also contains a data carrier with a security element of the type described.
  • the security element can in particular be applied to an opaque partial area of the data carrier, in particular printed directly, transferred via a transfer film or applied or introduced together with a carrier film be.
  • the security element can also form an integral part of the data carrier itself.
  • the security element is applied at least partially over a transparent or translucent window area of the data carrier, the magnetic feature and the additional feature at least partially overlapping the window area.
  • the color layer of the magnetic feature and the blocking layer of the additional feature are preferably produced with two printing units of the same printing machine, in particular with two screen printing units of the same screen printing machine.
  • the screen printing machine is also equipped with a magnetic module registered to the color layer of the magnetic feature, which provides the external magnetic field with which the magnetic pigments are aligned to form the desired modulation motif.
  • the invention also contains in this aspect a data carrier with a security element of the type described.
  • the security element can in particular form an integral part of the data carrier itself, the at least partially translucent fiber-based substrate being the substrate of the data carrier, for example the banknote paper of a banknote or the security paper of a Identity document represents.
  • the transparency can in particular be produced by printing a transparent substance onto the fiber-based substrate.
  • the colored layer of the magnetic feature and the transparentizing substance are preferably produced with two printing units of the same printing machine, in particular with two screen printing units of the same screen printing machine.
  • the screen printing machine is also equipped with a magnetic module registered to the color layer of the magnetic feature, which provides the external magnetic field with which the magnetic pigments are aligned to form the desired modulation motif.
  • the cover layer is preferably made opaque. Furthermore, the cover layer is advantageously not itself visually recognizable, for example because it has the same coloration as the surrounding background.
  • the cover of the print motif or the application can preferably be achieved with a fitted, transparent or translucent coating of the print motif or the application.
  • the aluminum layer of an applied hologram film can be provided with a matched, transparent or translucent coating in a yellow color.
  • a hologram film modified in this way appears golden in the area covered by the coating.
  • the print motif or the application can also be covered by matching, visually visible coloring of an applied film.
  • the invention also contains a data carrier with a security element of the type described.
  • the security element can in particular be applied to an opaque partial area of the data carrier, in particular printed directly, transferred via a transfer film or applied or introduced together with a carrier film .
  • the security element can also form an integral part of the data carrier itself.
  • the security element is applied at least partially over a transparent or translucent window area of the data carrier, the magnetic feature and the additional feature at least partially overlapping the window area.
  • the color layer of the magnetic feature and the cover layer of the additional feature are preferably produced with two printing units of the same printing machine, in particular with two screen printing units of the same screen printing machine.
  • the screen printing machine is also equipped with a magnetic module registered to the color layer of the magnetic feature, which provides the external magnetic field with which the magnetic pigments are aligned to form the desired modulation motif.
  • the scattering color layer can be opaque, but is preferably at least translucent and advantageously hardly or not at all when the window area is viewed from above. In transmitted light, the scattering color layer looks like a matt screen or a window pane covered with raindrops.
  • the color layer of the magnetic feature and the scattering color layer of the additional feature are preferably produced with two printing units of the same printing machine, in particular with two screen printing units of the same screen printing machine.
  • the screen printing machine is also equipped with a magnetic module registered to the color layer of the magnetic feature, which provides the external magnetic field with which the magnetic pigments are aligned to form the desired modulation motif.
  • the additional feature of the first aspect instead of by combining a luminescent layer with a blocking layer by means of a polarizing coating which can only be seen when viewed using a polarizing filter.
  • the polarizing coating can be formed, for example, by a liquid crystal coating.
  • the additional feature can also be formed by a line motif, a line, point or frequency-modulated raster which interprets the modulation of the modulation motif of the magnetic feature.
  • the grids mentioned can in particular be frequency-modulated or amplitude-modulated grids.
  • the additional feature is advantageously only present outside of the magnetic feature or, at least during the authenticity check, can only be visually recognized outside of the magnetic feature.
  • the additional feature or partial layers of the additional feature can also overlap with the magnetic feature. It is only essential that the visual effect of the additional feature only appears outside of the magnetic feature.
  • the additional feature forms an at least partially circumferential edge of the magnetic feature.
  • the additional feature can in particular form an edge that completely encircles the magnetic feature.
  • the additional feature can also be on the inside and the magnetic feature can form a partially or completely circumferential edge for the additional feature.
  • the additional feature directly adjoins the magnetic feature, for example on a flank of the magnetic feature.
  • the outline motif and the modulation motif of the magnetic feature are related to one another.
  • the two motifs can represent motif parts of an overall motif that are related to one another, complement one another or mutually explain one another.
  • the named data carrier is advantageously a value document, such as a bank note, in particular a paper bank note, a polymer bank note or a film composite bank note, a share, a bond, a certificate, a voucher, a check Certificate, a tax stamp, a high-quality admission ticket or a brand protection element, but also an identification card such as a credit card, a bank card, a cash card, an authorization card, an identity card or a passport personalization page.
  • a value document such as a bank note, in particular a paper bank note, a polymer bank note or a film composite bank note, a share, a bond, a certificate, a voucher, a check Certificate, a tax stamp, a high-quality admission ticket or a brand protection element, but also an identification card such as a credit card, a bank card, a cash card, an authorization card, an identity card or a passport personalization page.
  • the registration of the magnetic feature and the additional feature can be checked and evaluated, for example, with an aid in the form of an image sensor in a mobile test system, for example a camera, a smartphone with a camera or a tablet computer with a camera.
  • the registration can also be recorded and evaluated with a stationary test device, such as a bank note processing device, using sensors.
  • FIG 1 shows a schematic representation of a bank note 10 with a security element 12 according to the invention, which is shown in FIG Fig. 2 in supervision under UV lighting and in Fig. 3 is shown in more detail in cross section.
  • the security element 12 consists of two sub-areas 20, 30 which are printed on the bank note paper 14 of the bank note 10 so as to be registered with one another.
  • the first sub-area represents a magnetic feature 20 in which a color layer 22 with magnetically alignable magnetic pigments has been printed onto the bank note paper 14.
  • the magnetic pigments were aligned with an external magnetic field in the form of a desired motif while the binding agent was still moist, and the printing ink binding agent was dried, for example by exposure to UV, in order to permanently fix the alignment of the magnetic pigments.
  • the magnetic feature 20 thus contains two separate motifs, namely on the one hand an outline motif 24, which is formed by the outline shape of the printed color layer 22 and, on the other hand, a modulation motif 26, which is formed by the regionally different alignment of the magnetic pigments inside the color layer 22.
  • the outline motif is formed by a simple rectangle and the modulation motif 26 by a stripe or bar motif.
  • the magnetic feature 20 is supplemented by an additional feature 30 arranged in a matched manner to the magnetic feature 20, which repeats the modulation motif 26 of the magnetic feature 20 with different visual effects, specifically with luminescence effects in this exemplary embodiment.
  • the color layer 22 of the magnetic feature 20 is printed onto the banknote substrate 14.
  • the additional feature 30 is formed by a luminescent layer 32 and a UV-absorbing blocking layer 34 arranged over the luminescent layer 32.
  • the blocking layer 34 drawn without hatching is applied in the form of a stripe or bar motif 36, which repeats the shape of the modulation motif 26 of the magnetic feature 20 and is also applied to the magnetic feature 20 in such a way that the bar motif of the modulation motif 26 is in the bar motif 36 of the additional feature continues.
  • the luminescent layer 32 itself does not have to have any special registration with the magnetic feature 20, since the motif registration is ensured by the registered application of the blocking layer 34.
  • the luminescent layer 32 and the blocking layer 34 are colorless or transparent in the visible spectral range, so that only the magnetic feature 20 of the security element 12 is visible when viewed normally in daylight.
  • the luminescent layer 32 is excited to luminescence in the visible spectral range by the UV excitation, but only in the subregions 38 in which the UV excitation radiation is not absorbed by the blocking layer 34 becomes. Since the blocking layer 34 is applied in the form of a motif 36 repeating the modulation motif 26, the resulting luminescence image of the additional feature 30 shows the same stripe or bar motif as the magnetic feature 20 Motifs 26, 36 can be easily verified due to the immediate spatial proximity of the two partial areas 20, 30.
  • the two screen printing units of a Nota Screen TM screen printing machine are used, which have a good registration with one another.
  • the first screen printing unit is used to produce the color layer 22 with the modulation motif 26, and the second screen printing unit to apply the blocking layer 34 in register therewith.
  • the first screen printing unit is equipped with a magnetic module that is arranged registered to the color layer 22 of the magnetic feature 20.
  • printing machines which in particular have at least one first printing unit for applying a magnetically alignable ink, for example in gravure printing, flexographic printing and in particular screen printing, a magnetic module for aligning the magnetically orientable ink, a spontaneous drying device, preferably UV drying for Fixing the orientation of the pigments by means of an LED dryer for pinning, a final or intermediate dryer, as well as at least one further printing unit, which is preferably provided in front of the printing unit for printing the magnetically orientable color, this printing unit, too, is preferably coupled to a spontaneous drying device.
  • this at least one printing unit can also be arranged after the printing unit for printing the magnetically orientable color.
  • the substrate to be printed can be a web-shaped substrate or a sheet substrate.
  • a single-cylinder principle with a common impression cylinder is particularly preferred for web-shaped materials, since fluctuations in web tension are negligible.
  • printing machine designs are preferably used which avoid substrate transfer by means of gripper systems in the area of the printing units.
  • Figure 4 shows a further embodiment of a security element 40 according to the invention, wherein Fig. 4 (c) shows the complete security element 40 and Fig. 4 (a) and (b) Show partial elements for a better understanding of the structure of the security element.
  • the security element 40 contains a magnetic feature 50 with a color layer 52 with magnetically alignable magnetic pigments.
  • the outline motif 54 of the magnetic feature 50 represents a six-pointed star, which is also provided with an internal numerical value "50", while the modulation motif 56 formed by the different orientation of the magnetic pigments again represents a stripe or bar motif.
  • Fig. 4 (b) shows the magnetic feature 50 together with the luminescent layer 62 of the additional feature 60, which is located below the magnetic feature.
  • Fig. 4 (c) finally shows the finished security element 40 with magnetic feature 50 and complete additional feature 60.
  • the additional feature 60 contains its position and outline in FIG Fig. 4 (c) are indicated again with dashed lines, also a blocking layer 64 lying over the luminescent layer 62, which has the shape of a square with a star-shaped recess 66 and is applied in register with the outline 54 of the magnetic feature 50. Due to the interaction of luminescent layer 62 and blocking layer 64, the additional feature 60 shows a total of a star motif 66 which repeats or supplements the outline motif 54 of the magnetic feature 50 in the form of a circumferential edge.
  • the luminescent layer 62 and the blocking layer 64 are also in the exemplary embodiment from FIG Fig. 4 colorless or transparent in the visible spectral range, so that only the magnetic feature 50 of the security element 40 is visible when viewed normally in daylight. If the security element 40 is exposed to UV radiation, the luminescence layer 62 is excited to luminescence in the visible spectral range by the UV excitation in the areas not covered by the blocking layer 64, i.e. precisely within the star-shaped recess 66. The luminescence image of the additional feature 60 then shows, matched to the magnetic feature, the same star motif that is already shown by the outline of the magnetic feature 50. The registration of the motifs 54, 66 can be easily verified by the circumferential edge design of the two star motifs, since the human eye reacts very sensitively to any different edge widths along the circumference of the star motif 54.
  • the in Fig. 5 shows another embodiment shown Fig. 5 (a) the appearance of the security element 70 in visible light and Fig. 5 (b) the appearance when excited with UV light.
  • the security element 70 contains a magnetic feature 80 with a color layer 82 with magnetically alignable magnetic pigments.
  • the outline motif 84 of the magnetic feature 80 represents a ten-pointed star, and the modulation motif 86 formed by the different orientations of the magnetic pigments is again a stripe or bar motif.
  • the additional feature 90 of the security element 70 contains a two-colored Iriodin stripe 92, the partial stripes 92-A, 92-B of which show different luminescent colors even with UV excitation.
  • the partial stripe 92-A appears red in normal lighting and has a yellow luminescent color
  • the partial stripe 92-B appears blue in normal lighting and has a green luminescent color.
  • the Iriodin stripe 92 thus forms a luminescent layer which can be perceived by the observer even without excitation in the visible spectral range.
  • a blocking layer 94 of the additional feature 90 is arranged over the Iriodin strip 92, which, like the magnetic feature 80, is designed in the form of a ten-pointed star and is arranged in a matched manner to the outline 84 of the magnetic feature 80.
  • the blocking layer 94 is transparent in the visible spectral range and only appears when exposed to UV radiation due to its UV-absorbing effect.
  • the Iriodin strip 92 with the partial strips 92-A, 92-B is applied to the substrate 72, then the blocking layer 94 and finally the color layer 82. Since the star pattern of the blocking layer 94 is somewhat larger than the star pattern 84 of the color layer 82 is formed, a fitted, star-shaped edge 96 of the blocking layer 94 remains outside the color layer 82.
  • the Iriodin stripe 92 appears two-colored red / blue in visible light and the star-shaped magnetic feature 80 lies with its stripe or bar pattern 86 over this two-colored Iriodin stripe 92.
  • the Iriodin stripe 92 luminesces two-tone yellow / green, but only in the areas that are not covered by the blocking layer 94.
  • the viewer therefore sees the star motif 84 of the magnetic feature 80 with a fitted, star-shaped and non-luminescent edge 96 under UV light.
  • the registration of the motifs 84, 96 is easy to verify, since the human eye is very sensitive to possibly different edge widths along the Circumference of the star motif 84 reacts.
  • the blocking layer 94 is applied in register with the magnetic feature 80 in such a way that the edge of the colored layer 82 runs at a constant distance from the outline 24 of the magnetic feature 80.
  • the resulting luminescent edge thus also has the star shape of the outline motif.
  • the blocking layer 94 is designed such that it only blocks excitation radiation from a partial range of the UV spectral range, for example blocks UV-C radiation (in particular at 254 nm) but lets through UV-A radiation (in particular at 365 nm) .
  • the additional feature 90 is thereby more strongly hidden, since its presence cannot yet be made visible with the UV-A lamps of simpler bank note checking devices.
  • the security elements described can be present as a separate security element which is applied to a data carrier to be protected, but they can also be part of the data carrier to be protected itself.
  • the security elements can be present in an opaque sub-area of the data carrier, or they can be arranged entirely or partially in a transparent window area of the data carrier, for which purpose the magnetic feature 20 and the additional feature 30 can be present on a transparent carrier film 14, for example.
  • the transparent window area can also consist of a transparent partial area of a plastic film of the data carrier to be protected, to which the magnetic feature and the additional feature are applied directly.
  • the magnetic feature 20 is advantageously arranged at least partially within the window area, so that the outline motif 26 formed by the magnetic feature 20 is completely visible from one side of the data carrier and at least partially visible from the opposite side through the window area.
  • the additional feature 30 is then advantageously arranged at least partially within the transparent window area, so that the additional feature 30 is completely visible from one side of the data carrier and at least partially visible from the opposite side through the window area.
  • the blocking layer 34 is a visually undetectable UV-absorbing layer, the registration of the additional feature 30 with the magnetic feature 20 on both sides of the data carrier in the window area when the data carrier with the window area is at the test by means of UV light is positioned on a luminescent substrate and the window itself is transparent to at least part of the UV light.
  • FIG. 6 and 7 illustrate another aspect of the present invention and a further possibility for the specific embodiment of the in Fig. 1 shown security element 12. It shows Fig. 6 the security element 12 in cross section and Fig. 7 the visual appearance when viewed in a combination of incident and transmitted light.
  • the security element 12 consists of two partial areas 20, 100 which are present in register on the bank note paper 14 of the bank note 10.
  • the first sub-area represents a magnetic feature 20 in which a color layer 22 with magnetically alignable magnetic pigments has been printed onto the bank note paper 14.
  • the magnetic pigments were aligned with an external magnetic field in the form of a desired motif while the binding agent was still moist, and the printing ink binding agent was dried, for example by exposure to UV, in order to permanently fix the alignment of the magnetic pigments.
  • the magnetic feature 20 thus contains two separate motifs, namely on the one hand an outline motif 24, which is formed by the outline shape of the printed color layer 22 and, on the other hand, a modulation motif 26, which is formed by the regionally different alignment of the magnetic pigments inside the color layer 22.
  • an outline motif 24 which is formed by the outline shape of the printed color layer 22
  • a modulation motif 26 which is formed by the regionally different alignment of the magnetic pigments inside the color layer 22.
  • the outline motif is again formed by a simple rectangle and the modulation motif 26 by a stripe or bar motif.
  • the magnetic feature 20 is supplemented by an additional feature 100 arranged in a matched manner to the magnetic feature 20, which repeats the modulation motif 26 of the magnetic feature 20 with different visual effects, in this exemplary embodiment specifically with a watermark produced by printing.
  • the color layer 22 of the magnetic feature 20 is printed onto the banknote substrate 14.
  • the additional feature 100 is produced by a layer 102 of a transparent lacquer which is printed on in certain areas and which increases the transmission of the translucent banknote paper 14 locally.
  • the transparentizing layer 102 is applied in the form of a stripe or bar motif 106, which repeats the shape of the modulation motif 26 of the magnetic feature 20 and is also applied to the magnetic feature 20 in such a way that the bar motif of the modulation motif 26 is in the bar motif 106 of the Additional feature continues.
  • FIG Fig. 7 shown schematically.
  • the appearance shown there with a combination of incident and transmitted light relates to a typical viewing situation in which a banknote 10 is held against a window or a bright light source, so that on the one hand the watermark of the additional feature 100 is visible, but on the other hand also sufficient incident light for the detection of the magnetic feature 20 is available.
  • the two screen printing units of a Nota Screen TM screen printing machine are used, which have a good registration with one another.
  • the first screen printing unit is used to generate the color layer 22 with the modulation motif 26, the second screen printing unit to apply the transparentizing layer 102 in register therewith.
  • other printing machines with the properties mentioned there can also be used advantageously.
  • FIG. 8 and 9 illustrate a further aspect of the present invention and a further possibility for the specific embodiment of the in Fig. 1 shown security element 12. It shows Fig. 8 the security element 12 in cross section and Fig. 9 the visual appearance of the security element when viewed under supervision.
  • the security element 12 consists of two partial areas 20, 110, which are present on the bank note paper 14 of the bank note 10 in register with one another.
  • the first sub-area represents a magnetic feature 20 in which a color layer 22 with magnetically alignable magnetic pigments was printed on the bank note paper 14.
  • the magnetic pigments were aligned with an external magnetic field in the form of a desired motif while the binding agent was still moist, and the printing ink binding agent was dried, for example by exposure to UV, in order to permanently fix the alignment of the magnetic pigments.
  • the magnetic feature 20 thus contains two separate motifs, namely on the one hand an outline motif 24, which is formed by the outline shape of the printed color layer 22 and, on the other hand, a modulation motif 26, which is formed by the regionally different alignment of the magnetic pigments inside the color layer 22.
  • an outline motif 24 which is formed by the outline shape of the printed color layer 22
  • a modulation motif 26 which is formed by the regionally different alignment of the magnetic pigments inside the color layer 22.
  • the outline motif is again formed by a simple rectangle and the modulation motif 26 by a stripe or bar motif. It goes without saying that these simple motifs are only used for illustration and more complex motifs are also possible in practice.
  • the magnetic feature 20 is supplemented by an additional feature 110 arranged in a matched manner to the magnetic feature 20, which repeats the modulation motif 26 of the magnetic feature 20 with different visual effects, in this embodiment specifically with a matched covered print motif or a matched covered application.
  • the color layer 22 of the magnetic feature 20 is printed onto the banknote substrate 14.
  • the additional feature 110 is formed by a print motif 112 and an opaque cover layer 114 arranged over the print motif 112.
  • Covering layer 114 drawn in without hatching is applied in the form of a stripe or bar motif 116, which shows the
  • the shape of the modulation motif 26 of the magnetic feature 20 is repeated and also registered to the magnetic feature 20 so that the bar motif of the modulation motif 26 continues into the bar motif 116 of the additional feature, as in FIG Fig. 9 illustrated.
  • the print motif 112 itself does not have to have any special registration with the magnetic feature 20, since the motif registration is ensured by the registered application of the opaque cover layer 114.
  • the cover layer 114 itself cannot be visually recognized in the exemplary embodiment, since it has the same coloration as the surrounding bank note paper 14, for example.
  • the two screen printing units of a Nota Screen TM screen printing machine are used, which have a good registration with one another.
  • the first screen printing unit is used to produce the color layer 22 with the modulation motif 26, the second screen printing unit to apply the cover layer 114 in register therewith.
  • other printing machines with the properties mentioned there can also be used advantageously.
  • an applied application can also be covered by a cover layer 114 in register.
  • the print motif or the application is covered by a matched, visually visible coloring of an applied film instead of a cover layer 114.
  • FIGS. 10 and 11 show special configurations of security elements according to a further aspect of the invention, in which the security elements are partially arranged over a window area 122 of a data carrier 120.
  • Fig. 10 Referred to in Figs. 10 (a) and 10 (b) in each case a plan view of the front side 120-V and rear side 120-R of the data carrier 120, and in Fig. 10 (c) shows the appearance of the data carrier in transmitted light when viewed from the rear.
  • the security element 124 consists of two partial areas 20, 130 which are present in a matched manner partly inside and partly outside the window area 122 of the data carrier 120.
  • the first sub-area represents a magnetic feature 20 in which a color layer 22 with magnetically alignable magnetic pigments was printed either directly in the window area 122 of the data carrier or on a carrier film arranged in the window area.
  • the magnetic pigments were aligned with an external magnetic field in the form of a desired motif while the binding agent was still moist, and the binding agent of the printing ink was dried, for example by exposure to UV, in order to permanently fix the alignment of the magnetic pigments.
  • the magnetic feature 20 thus contains two separate motifs, namely on the one hand an outline motif 24, which is formed by the outline shape of the printed color layer 22 and, on the other hand, a modulation motif 26, which is formed by the regionally different alignment of the magnetic pigments inside the color layer 22.
  • the outline motif 24 is formed by a ten-pointed star and the modulation motif 26 is formed by a stripe or bar motif.
  • the magnetic feature 20 is supplemented by an additional feature 130 arranged in a matched manner to the magnetic feature 20, which repeats the outline motif 24 of the magnetic feature 20 with different visual effects, in this exemplary embodiment specifically with a strongly scattering color in the window area 122 that is essentially only visible in transparency.
  • Fig. 10 (a)
  • the color layer 22 of the magnetic feature 20 is printed on in the window area 122 of the data carrier 120.
  • the additional feature 130 is produced by a strongly scattering color layer 132 applied in the window area 122, the edge 136 of which in FIG Figures 10 (a) and (b) is indicated with dashed lines.
  • the highly scattering color layer 132 is applied in a form that repeats the star shape of the outline motif 24 of the magnetic feature 20 in the relevant window area 122 and is also applied to the magnetic feature 20 in such a way that the edge 136 of the color layer 132 is at a constant distance from the outline 24 of the magnetic feature 20 runs.
  • the window area is viewed from the rear side 120-R under mixed lighting of incident and transmitted light, as in Fig. 10 (c)
  • the magnetic feature 20 is partially recognizable through the window area 122, albeit typically with a somewhat low color.
  • the scattering effect of the color layer 132 in transmitted light creates the impression of a window pane covered with raindrops in a sub-area registered with respect to the magnetic feature 20.
  • the two screen printing units of a Nota Screen TM screen printing machine are used, which have a good registration with one another.
  • the first screen printing unit is used to produce the color layer 22 with the outline motif 24, the second screen printing unit to apply the highly scattering color layer 132 in register therewith.
  • the two colored layers can be applied directly to the data carrier 120, or also to a transparent film, which is then arranged in the window area of the data carrier.
  • other printing machines with the properties mentioned there can also be used.
  • Figure 11 shows in a view how Fig. 10 (c) a modification of the design of the Fig. 10 , in which the highly scattering color layer 132 is applied in a form 138 that repeats the stripe and bar motif 26 of the magnetic feature 20 in the relevant window area 122 and is also applied to the magnetic feature 20 in such a way that the bar motif of the modulation motif 26 is integrated into the Bar motif 138 of additional feature 130 continues.

Landscapes

  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
EP21020007.7A 2018-06-05 2019-06-05 Élément de sécurité à caractéristique magnétique Pending EP3835075A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018004439.5A DE102018004439A1 (de) 2018-06-05 2018-06-05 Sicherheitselement mit Magnetmerkmal
EP19000274.1A EP3578380B1 (fr) 2018-06-05 2019-06-05 Élément de sécurité avec une caractéristique magnétique

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP19000274.1A Division EP3578380B1 (fr) 2018-06-05 2019-06-05 Élément de sécurité avec une caractéristique magnétique
EP19000274.1A Division-Into EP3578380B1 (fr) 2018-06-05 2019-06-05 Élément de sécurité avec une caractéristique magnétique

Publications (1)

Publication Number Publication Date
EP3835075A1 true EP3835075A1 (fr) 2021-06-16

Family

ID=66793743

Family Applications (2)

Application Number Title Priority Date Filing Date
EP21020007.7A Pending EP3835075A1 (fr) 2018-06-05 2019-06-05 Élément de sécurité à caractéristique magnétique
EP19000274.1A Active EP3578380B1 (fr) 2018-06-05 2019-06-05 Élément de sécurité avec une caractéristique magnétique

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19000274.1A Active EP3578380B1 (fr) 2018-06-05 2019-06-05 Élément de sécurité avec une caractéristique magnétique

Country Status (2)

Country Link
EP (2) EP3835075A1 (fr)
DE (1) DE102018004439A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3842254A1 (fr) * 2019-12-24 2021-06-30 Thales Dis France Sa Élément de sécurité luminescente personnalisable
CN112329903B (zh) * 2020-11-09 2024-03-29 中钞特种防伪科技有限公司 磁性防伪元件、产品及其制作方法
CN112622418B (zh) * 2021-01-06 2023-05-02 黄其青 一种工业用板材商标印刷设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1669213A1 (fr) * 2004-12-09 2006-06-14 Sicpa Holding S.A. Elément de sécurité avec un aspect dépendent de l'angle d'observation
WO2009033601A1 (fr) 2007-09-11 2009-03-19 Giesecke & Devrient Gmbh Élément de sécurité optiquement variable

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1669213A1 (fr) * 2004-12-09 2006-06-14 Sicpa Holding S.A. Elément de sécurité avec un aspect dépendent de l'angle d'observation
WO2009033601A1 (fr) 2007-09-11 2009-03-19 Giesecke & Devrient Gmbh Élément de sécurité optiquement variable

Also Published As

Publication number Publication date
DE102018004439A1 (de) 2019-12-05
EP3578380A1 (fr) 2019-12-11
EP3578380B1 (fr) 2021-02-24

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