EP2646256B1 - Data carrier having an identification mark - Google Patents

Data carrier having an identification mark Download PDF

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Publication number
EP2646256B1
EP2646256B1 EP11788058.3A EP11788058A EP2646256B1 EP 2646256 B1 EP2646256 B1 EP 2646256B1 EP 11788058 A EP11788058 A EP 11788058A EP 2646256 B1 EP2646256 B1 EP 2646256B1
Authority
EP
European Patent Office
Prior art keywords
security element
substrate
data carrier
region
marking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11788058.3A
Other languages
German (de)
French (fr)
Other versions
EP2646256A1 (en
Inventor
André Gregarek
Thomas Mang
Patrick Renner
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
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 GmbH filed Critical Giesecke and Devrient GmbH
Priority to PL11788058T priority Critical patent/PL2646256T3/en
Publication of EP2646256A1 publication Critical patent/EP2646256A1/en
Application granted granted Critical
Publication of EP2646256B1 publication Critical patent/EP2646256B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/23—Identity cards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • 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
    • B42D25/355—Security threads
    • 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
    • B42D25/373—Metallic 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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/03—Forms or constructions of security seals
    • G09F3/0305—Forms or constructions of security seals characterised by the type of seal used
    • G09F3/0341—Forms or constructions of security seals characterised by the type of seal used having label sealing means
    • B42D2033/04—
    • B42D2033/10—
    • B42D2033/20—
    • B42D2033/22—
    • B42D2033/24—
    • B42D2033/28—
    • B42D2033/30—
    • B42D2033/32—
    • B42D2035/24—
    • B42D2035/36—
    • B42D2035/50—
    • 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
    • B42D25/324—Reliefs
    • 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
    • B42D25/346—Perforations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers

Definitions

  • the invention relates to a data carrier, in particular a document of value, such as a banknote, identity card and the like, with a substrate and a security element connected to the substrate, wherein the data carrier contains a marking produced by the action of laser radiation, which has a visual impression changed in transmitted light compared to reflected light having.
  • the invention also relates to a method for producing such a data carrier.
  • Data carriers such as security, value or identity documents, but also other valuables, are often provided with security features for security purposes, which allow a verification of the authenticity of the data carrier and at the same time serve as protection against unauthorized reproduction.
  • security features whose authenticity is checked in a transparent manner, such as the long-known watermark of paper banknotes, allow a particularly simple authenticity check by the user.
  • the present invention has the object to further improve data carriers of the type mentioned in terms of their imitation security and their visual appearance.
  • the marking has a visual impression which changes in transmitted light compared to reflected light.
  • the data carrier can be located on top of a base, for example, when illuminated with daylight or artificial light.
  • the data carrier is then picked up and held against a light source.
  • the visual impression of the marking changes for the viewer.
  • the change may in particular be in the visible becoming a first not visible in incident light identification part, the visible expectant identification part may appear independently of the visible in reflected light features or supplement or expand a visible already in incident light part.
  • the first identification part has a multiplicity of straight, parallel or divergent cutting lines in the substrate and / or the second identification part has a multiplicity of straight, parallel or divergent modification lines in the security element.
  • the first identification part advantageously has a multiplicity of curved, equidistant or divergent cutting lines in the substrate and / or the second identification part has a multiplicity of curved, equidistant or divergent modification lines in the security element.
  • the cut lines and the modification lines at least partially adjoin one another without offset.
  • all modification lines connect to intersection lines without offset.
  • the cut lines or modification lines are preferably formed with a width between 0.05 mm and 1 mm.
  • the center-to-center distance is advantageously between 0.05 mm and 1.5 mm, preferably between 0.4 mm and 1.0 mm, in particular about 0.7 mm, with the center-to-center Distance can be constant (equidistant cut lines or modification lines) or variable (divergent cut lines or modification lines).
  • the modification region is formed by a material removal of the security element, in particular by a local demetallization of a metal layer or by a local removal of a color layer.
  • the modification region can also be formed by an irreversible change in the optical properties of the security element, in particular by a local change in the visible color or the transparency of the security element. In the latter case, the irreversible change, for example, in a local transformation of a transparent area into an opaque area.
  • the first and second identification part represent related or complementary information.
  • the information of the second identification part can repeat the information of the first identification part or supplement it to a total information.
  • the first identification part is completely covered by the security element.
  • the first identification part When looking at the data medium front page in supervision, the first identification part is then usually not or only barely visible. In transmitted light, however, the at least one opening of the first identification part emerges brightly illuminated. When changing from reflected light to transmitted light, this results in a striking change in the visual appearance of the marking.
  • the first identification part is partially covered by the security element and partially arranged directly next to the security element.
  • the security element part of the user's attention is directed to the reflected light / transmitted light effect, as explained in detail below.
  • the substrate may be provided with a laser-modifiable marking substance at least in a partial region, and the at least one opening of the first identification part in this partial region may have an edge region modified by the action of laser radiation.
  • the substrate is in the Subregion provided with a marker whose visible color is changed by the action of the laser radiation, so that the at least one opening of the first marking part in this subregion has a colored edge region.
  • the substrate may be provided with a marking substance whose infrared-absorbing, magnetic, electrical or luminescent properties can be changed by the action of the laser radiation.
  • the openings of a subarea provided with such a marker substance then have an edge region with infrared-absorbing, magnetic, electrical or luminescent properties which are changed with respect to their environment and which offer a further possibility for automated authenticity testing.
  • laser-modifiable effect pigments or pigment-free laser-modifiable markers can be used.
  • suitable marking materials as well as the manner of their incorporation or incorporation into a substrate and the formation of a perfectly adapted edge when exposed to laser are described in the document WO 2010 / 072329A1 described in more detail, the disclosure of which is included in the present application in this respect.
  • the substrate of the data carrier may consist of paper, in particular cotton paper. Of course, it is also possible to use paper which contains a proportion of polymeric material in the range of 0 ⁇ x ⁇ 100% by weight.
  • the substrate is a plastic, in particular a plastic film, for. B. a film of polyethylene (PE), Polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polypropylene (PP) or polyamide (PA).
  • the film may also be monoaxially or biaxially stretched. Among other things, the stretching of the film leads to it obtaining polarizing properties which can be used as a further authenticity feature.
  • the tools required for exploiting these properties, such as polarization filters, are known to the person skilled in the art.
  • the data carrier is a paper-film composite or a film composite in which the substrate and the security element are embedded between two film layers.
  • three-layer composites having a layer sequence of film / paper / film or film / film / film are suitable.
  • the security element of the data carrier is preferably a security thread, a label, a transfer element, a security print or a partial metallization.
  • the metallization can basically also be replaced by a metallic effect color, for example a metallic effect color having metallic effect pigments. Even with a metallized hologram or a similar diffraction structure, the metallization provided there can be replaced by such a metallic effect color or a high-refractive dielectric layer.
  • the modification region of the security element is formed in a metal layer.
  • the metal layer may in particular be a hologram metallization, the absorber or reflector layer of a color-shifting thin-film element, a metallic matt structure, or a metallic coating of a microstructure, for example an array of microlenses or a sub-wavelength grating.
  • the first and second identification part are advantageously produced by laser application with an infrared laser, preferably with a CO 2 laser.
  • the substrate can be provided with a laser-modifiable marking substance at least in a partial region, so that the at least one opening of the first identification part in this partial region is modified by the action of the laser radiation in its edge region.
  • the security paper is preferably provided in the subregion with a marking substance whose visible color can be changed by the action of the laser radiation, so that the at least one opening of the first marking part in this subregion is provided with a colored edge region by the action of the laser radiation.
  • the substrate provided with at least one opening is embedded with the modified security element between two foils in order to form a film composite structure.
  • Fig.1 schematically shows a banknote 10, in which the banknote paper 12, a security element in the form of a metallized hologram strip 14 is applied.
  • the hologram strip 14 shows a hologram, which in the exemplary embodiment consists of a repeated sequence of a portrait 16 and the value "50" (reference numeral 18) of the banknote 10.
  • the banknote 10 according to the invention is additionally provided with a marking 30 which has a visual impression changed in the transmitted light compared to reflected light. This altered visual impression is further down in the different views of the Fig. 4 illustrated and can be seen in the schematic overall view of Fig.1 naturally not reproduced faithfully.
  • Fig. 2 a detail of the banknote 10 in the area of the marking 30 during Fig. 3 a cross section along the line III-III of Fig. 2 shows.
  • the hologram strip 14 applied to the banknote paper 12 contains an embossing lacquer layer 20, in which the desired hologram structure 22 with the portrait 16 and the value 18 is embossed, and a hologram metallization 24, for example made of aluminum, applied to the embossing lacquer layer 20.
  • the hologram 16, 18 thus represents a reflection hologram that dominates the visual impression when viewing the front of the banknotes in incident light ( Fig. 4 (a) ).
  • the hologram strip 14 or the banknote paper 12 may have further layers, which do not contribute to the optical effect of the inventive label and are therefore not shown in the rule.
  • the banknote substrate and / or the security element may have one or more adhesive and / or primer layers. If these layers are provided, they are possibly removed by application of laser radiation or modified in their appearance.
  • the in Fig. 3 layers shown also be arranged differently.
  • the metallization 24 may also be arranged between the substrate 12 and the lacquer layer 20.
  • the additional advantage that the hologram structure and the metallization are protected by the arrangement between the substrate and resist layer from manipulation and other counterfeiting attempts.
  • such embodiments may be applied to the target substrate by transfer methods.
  • the label 30 is constructed in two parts and consists of a first and a second identification part, both of which were generated in the same operation by loading the banknote paper 12 and the hologram strip 14 with laser radiation and therefore stand in perfect register despite their different nature.
  • the tag 30 includes a screened laser hole 32 formed by a line grid of a plurality of parallel cut lines 34 extending through the banknote paper 12 and the hologram strip 14 extend therethrough.
  • the rastered laser hole 32 is generally in the form of a pattern, character, or code, and in the embodiment has the shape of a maple leaf 36 in a square frame 38.
  • the tag 30 includes a modification area 40 in which the banknote paper 12 is not cut, but in which only the metallization 24 of the hologram strip 14 has been removed in a plurality of parallel demetallization lines 42 and the visual appearance of the hologram strip 14 is thereby modified.
  • the demetallization lines 42 are fitted perfectly to the cut lines 34 located outside the modification region 40.
  • the perfect registration of demetallization lines 42 and cut lines 34 is ensured by the fact that both line types 34, 42 are generated by laser application with the same processing laser beam in the same operation.
  • the different processing results, on the one hand the cutting of the hologram strip 14 and the banknote paper 12 and on the other hand only the demetallization of the hologram metallization 24, are achieved by a corresponding variation of the laser parameters, in particular the laser power and / or the cutting speed during the machining process.
  • the area of the cutting lines 34 is covered on both sides with a transparent film 50.
  • This cover may comprise only the cut line area, or may extend over a larger area, for example the entire banknote 10.
  • Such a cover can be realized particularly well in the case of composite banknotes with a layer structure film / substrate with security element / foil. there Not only is the cutting line area, but the entire security element 14 completely between the composite films 50 and is therefore particularly well protected.
  • Fig. 4 The different visual impression of the banknote 10 when viewing the front and back in reflected light or transmitted light is in Fig. 4 illustrated, where Fig. 4 (a) the visual impression when viewing the front of the lens, Fig. 4 (b) the visual impression when the transmitted light is viewed from the front, Fig. 4 (c) the visual impression in incident light viewing the back and Fig. 4 (d) shows the visual impression when viewing the transmitted light on the back.
  • Fig. 4 (a) When looking at the banknote front side in reflected light, the reflection hologram 16, 18 of the hologram strip 14 dominates the visual impression.
  • the outer contour 38 of the screened laser hole is faintly discernible, but the shape of the maple leaf 36 is not, since the perfectly matched demetalization lines 42 and cut lines 34 for the eye have only a very small difference in contrast.
  • the hologram in any case outshines the rastered laser hole 32 and the modification region 40. Because of the low contrast difference of the demetalization lines 42 and the cut lines 34, the inner motif "maple leaf" 36 is also under viewing angles. from which the hologram 16,18 is difficult to see, not recognizable.
  • the design 36 of the screened laser hole 32 surprisingly comes to the fore, as in FIG Fig. 4 (b) shown.
  • the line grid of the cut lines 34 in the transmitted light shines bright against the dark background of the metallization 24 of the hologram strip 14.
  • the outline of the maple leaf 36 and the demetallization lines 42 are also clearly visible in transmitted light, but because of the paper substrate 12 still present in the modification area 40 with lower brightness. Overall, the change from reflected light to transmitted light thus results in a striking change in the visual appearance of the marking 30.
  • Fig. 4 (c) When viewing the reverse side of the banknote 10 in incident light, the design 36 of the screened laser hole 32 can be clearly seen through the cut lines 34 in the banknote paper.
  • the hologram strip 14 applied on the front side and the demetallization lines 42 can not be seen on the rear side in reflected light, so that the interior of the maple leaf 36 appears without structure.
  • the banknote reverse side can also be provided there with a substantially opaque layer, in particular a dye-accepting layer.
  • the screened laser hole can protrude laterally out of the hologram strip 14.
  • the user recognizes from the front of the banknotes already in reflected light part of the screened laser hole and is thereby stimulated for review viewing.
  • another design namely the reflected light of the Hologram strip 14 hidden or dominated part of the screened laser hole. This surprising supplement effect is in the Figures 5 and 6 illustrated by two embodiments.
  • Fig. 5 is based on the embodiment of Fig. 4
  • the screened laser hole 32 of the Fig. 5 not only the design of a maple leaf 36 in square frame 38, which is covered by the hologram strip 14, but additionally includes a design 60, in which the value "50" (reference numeral 62) is arranged in an elliptical frame 64.
  • This design part 60 of the rastered laser hole 32 is arranged laterally next to, but directly adjacent to, the hologram strip 14 and is therefore also visible in front-side reflected-light viewing, as in FIG Fig. 5 (a) shown. If the user now holds the banknote against the light in order to be able to better recognize the design 60, the design impression of the design 60 surprisingly adds the design of the maple leaf 36 in the square frame 38, as in FIG Fig. 5 (b) shown.
  • the security element used according to the invention does not necessarily have to contain a hologram.
  • the modification of the visual appearance for example in the demetallization of a metal layer, for example the absorber or reflector layer of a color-shifting thin-film element, in the demetallization of a matt structure, in a color removal of a color layer or the partial or complete removal of another layer of the security element.
  • the removal can extend through the entire security element into the substrate of the data carrier, for example into the banknote paper, so that a watermark effect is additionally generated there.
  • a layer of the security element may also be provided with a laser-sensitive feature substance which experiences an irreversible change, for example a color change, as a result of the action of the laser radiation.
  • FIG. 7 in cross-section a data carrier 80 according to an embodiment of the invention, in which a security element with a metal layer 84 is applied to a paper substrate 82.
  • a security element with a metal layer 84 is applied to a paper substrate 82.
  • through openings 86 were introduced into the metal layer 84 and the paper substrate 82 by the action of laser radiation.
  • demetallization lines 88 have only been introduced into the metal layer 84 in which the visual appearance of the security element has been modified.
  • the reduced laser power in the modification region 85 was set such that not only the metal of the metal layer 84 is removed in the formation of the demetallization lines 88, but also thin spots 90 are generated in the paper substrate 82. at When viewed in transmitted light, the modification area 85 additionally shows a watermark effect.
  • a modification of the security element for example by a material removal or a color change, usually allows a more complex design than a through opening. It therefore makes sense to implement a motif that has more complex and less complex motivational proportions through a combination of opening and modification.
  • a security element patch with a metal layer 102 is applied to a paper substrate 100 of a banknote.
  • the marking 104 represents a coat of arms motif and is formed in a first identification part by a laser-cut opening 106 in the paper substrate 100.
  • the tag 104 is formed by a plurality of demetallization lines 108 in the metal layer 102 in which the visual appearance of the security tag patch is modified.
  • the greater complexity of the tag 104 in the modification region with the demetallization lines 108 over the laser cut aperture 106 is readily apparent.
  • the cut lines of the opening 106 and the demetallization lines 108 of the metal layer 102 are perfectly matched to one another at the locations where they meet, so that a uniform design results in transmitted light.
  • Fig. 10 shows a further embodiment of a data carrier with a generated by laser irradiation labeling 114. Similar to the embodiment of the Fig. 9
  • a security element patch with a metal layer 112 is applied to a paper substrate 110 of a banknote.
  • the mark 114 in this exemplary embodiment represents a star motif that is formed in a first identification part by a laser-cut opening 116 in the paper substrate 110.
  • the label 114 is formed by a plurality of demetallization lines 118 in the metal layer 112 in which the visual appearance of the security element patch is modified.
  • the cutting of the opening 116 and the generation of the demetallization lines 118 take place in the same operation by the same laser beam, so that the modification area with the demetallization lines 118 is perfectly matched to the opening 116.
  • the pentagonal end elements 118 brightly illuminate the inner part 116, which already appears bright in reflected light, to form the complete star motif 116, 118.
  • the data carrier in turn contains a security element, such as the window security thread 122 embedded in a banknote paper 120 Fig. 11 , Then, by laser application in the banknote paper 120, a rastered laser hole 124 of a plurality of parallel cut lines 126 is created which overlaps the window security thread 122.
  • the laser parameters are chosen so that the laser radiation in addition to the banknote paper 120 also cuts through the carrier film of the security thread 122. Subsequently, at least the cut region is covered with one or both sides each with a further film.
  • Such a combination can be used with particular advantage in laminated film banknotes, especially in composite film banknotes with a layer structure film / paper / foil, since the two outer films then not only protect the security element 122 from manipulation and prevent contamination, but there such a design as well allows to make forgery attacks by splitting the composite banknote, as described in more detail below.
  • the described design can also be used in composite film banknotes with a layer structure film / film / film.
  • Fig. 12 shows a further design of a data carrier with which a window security thread is simulated.
  • a continuous security thread 132 was first applied to the banknote paper 130 of a banknote, which was provided with a metal layer with a negative writing 134.
  • several identical openings 136 were then cut into the data carrier by the action of laser radiation, the laser parameters being selected so that the laser radiation cuts through both the banknote paper 130 and the security thread 132.
  • the combination of the applied security thread 132 and the openings 136 thus creates for the viewer the visual impression of a window security thread.
  • the invention can be used with particular advantage in laminated film banknotes, in which the outer film layers also serve to cover the openings produced by the laser radiation.
  • the composite film banknote 140 according to the invention has a substrate 142 made of paper or foil, which is connected to a security element 144.
  • a label 150 which has a changed in transmitted light compared to incident light visual impression.
  • a first identification part is formed by at least one opening 152 in the substrate 142, while a second identification part is formed in the security element 144 by a modification region 154, in which the visual appearance of the security element 144 is modified by the action of the laser radiation.
  • the laser energy or laser power is typically lowered when passing the laser beam at the transition from the cutting region 152 to the modification region 154, and vice versa during the transition from the modification region 154 to the cutting region 152 increased again. This ensures that the two marking parts, despite their different character, are in perfect register with each other.
  • cut substrate 142 and the modified security element 144 are sandwiched between two films 156 to form the desired composite film banknote 140.
  • the two outer films 156 can protect the security element not only against manipulation and contamination, but by the laser cut can also be formed an additional security feature that makes counterfeiting attacks by splitting the composite film banknote obvious ("tamper evident"). Namely, if a film of the composite is severed by the laser and the substrate scratched relatively deep or even soutrerint completely, so splits the composite film banknote unbalanced. The laser cut must form a closed contour. On the note page, which was not cut by the laser, the contour is then retained, while in the other note page a corresponding hole is created. If the laser cut is introduced in the area of another authenticity feature, this feature is also destroyed during splitting. A manipulation attempt becomes obvious.
  • the cutting lines 162 and the modification lines 172 of the rastered laser holes 160 need not necessarily be straight and parallel, as assumed for simplicity in the previous embodiments and in Fig. 14 (a) shown again. Rather, the screened laser holes 160 may also include, for example, straight and divergent cut lines 164 and modification lines 174, respectively, as in FIG Fig. 14 (b) or curved, equidistant cut lines 166 and modification lines 176, respectively, as shown in FIG Fig. 14 (c) or curved, divergent cut lines 168 or modification lines 178, as shown in FIG Fig. 14 (d) shown.
  • the widths of the cut lines in the substrate and the modification lines in the security element may differ from each other due to the generally Gaussian energy distribution of the laser beam.
  • the cutting lines of all embodiments can be provided with a laser-modified edge region, as generally described above.

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Description

Die Erfindung betrifft einen Datenträger, insbesondere ein Wertdokument, wie eine Banknote, Ausweiskarte und dergleichen, mit einem Substrat und einem mit dem Substrat verbundenen Sicherheitselement, wobei der Datenträger eine durch Einwirkung von Laserstrahlung erzeugte Kennzeichnung enthält, die einen im Durchlicht gegenüber Auflicht veränderten visuellen Eindruck aufweist. Die Erfindung betrifft auch ein Verfahren zum Herstellen eines derartigen Datenträgers.The invention relates to a data carrier, in particular a document of value, such as a banknote, identity card and the like, with a substrate and a security element connected to the substrate, wherein the data carrier contains a marking produced by the action of laser radiation, which has a visual impression changed in transmitted light compared to reflected light having. The invention also relates to a method for producing such a data carrier.

Datenträger, wie Sicherheits-, Wert- oder Ausweisdokumente, aber auch andere Wertgegenstände, werden zur Absicherung oft mit Sicherheitsmerkmalen ausgestattet, die eine Überprüfung der Echtheit des Datenträgers gestatten und die zugleich als Schutz vor unerlaubter Reproduktion dienen. Dabei erlauben Sicherheitsmerkmale, deren Echtheit in Durchsicht geprüft wird, wie etwa die seit langem bekannten Wasserzeichen von Papierbanknoten, eine besonders einfache Echtheitsprüfung durch den Benutzer.Data carriers, such as security, value or identity documents, but also other valuables, are often provided with security features for security purposes, which allow a verification of the authenticity of the data carrier and at the same time serve as protection against unauthorized reproduction. In this case, security features whose authenticity is checked in a transparent manner, such as the long-known watermark of paper banknotes, allow a particularly simple authenticity check by the user.

Davon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, Datenträger der eingangs genannten Art hinsichtlich ihrer Nachahmungssicherheit und ihres visuellen Erscheinungsbilds weiter zu verbessern.Based on this, the present invention has the object to further improve data carriers of the type mentioned in terms of their imitation security and their visual appearance.

Das Dokument DE 10 2007 036622 A1 offenbart einen Datenträger mit den Merkmalen des Oberbegriffs des Anspruchs 1.The document DE 10 2007 036622 A1 discloses a data carrier having the features of the preamble of claim 1.

Diese Aufgabe wird durch den Datenträger mit den Merkmalen des unabhängigen Anspruchs gelöst. Ein Verfahren zur Herstellung eines solchen Datenträgers ist in dem nebengeordneten Anspruch angegeben. Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by the data carrier having the features of the independent claim. A method of manufacturing such a data carrier is given in the independent claim. Further developments of the invention are the subject of the dependent claims.

Gemäß der Erfindung ist bei einem gattungsgemäßen Datenträger nach Anspruch 1 vorgesehen, dass

  • die Kennzeichnung mit einem ersten Kennzeichnungsteil durch zumindest eine durch Einwirkung von Laserstrahlung erzeugte Öffnung in dem Substrat gebildet, und
  • ist die Kennzeichnung mit einem zweiten Kennzeichnungsteil in dem Sicherheitselement durch einen Modifikationsbereich gebildet, in welchem das visuelle Erscheinungsbild des Sicherheitselements durch die Einwirkung der Laserstrahlung modifiziert ist,
  • wobei der Modifikationsbereich des zweiten Kennzeichnungsteils im Passer zu der Öffnung des ersten Kennzeichnungsteils steht.
According to the invention, it is provided in a generic data carrier according to claim 1, that
  • the marking with a first identification part is formed by at least one opening produced in the substrate by the action of laser radiation, and
  • the marking is formed with a second identification part in the security element by a modification region in which the visual appearance of the security element is modified by the action of the laser radiation,
  • wherein the modification region of the second identification part in the register faces the opening of the first identification part.

Die Kennzeichnung weist erfindungsgemäß einen im Durchlicht gegenüber Auflicht veränderten visuellen Eindruck auf. Zur Betrachtung der Kennzeichnung in Auflicht kann der Datenträger beispielsweise bei Beleuchtung mit Tages- oder Kunstlicht von oben auf einer Unterlage liegen. Für die Durchlichtbetrachtung wird der Datenträger dann aufgenommen und gegen eine Lichtquelle gehalten. Beim Wechsel von Auflicht- zur Durchlichtbetrachtung verändert sich der visuelle Eindruck der Kennzeichnung für den Betrachter. Die Änderung kann insbesondere im Sichtbar-Werden eines im Auflicht zunächst nicht sichtbaren Kennzeichnungsteils liegen, wobei der sichtbar werdende Kennzeichnungsteil unabhängig von den im Auflicht sichtbaren Merkmalen neu erscheinen kann oder einen bereits im Auflicht sichtbaren Teil ergänzen oder erweitern kann.According to the invention, the marking has a visual impression which changes in transmitted light compared to reflected light. For viewing the identification in incident light, the data carrier can be located on top of a base, for example, when illuminated with daylight or artificial light. For transparency viewing, the data carrier is then picked up and held against a light source. When changing from reflected light to transmitted light, the visual impression of the marking changes for the viewer. The change may in particular be in the visible becoming a first not visible in incident light identification part, the visible expectant identification part may appear independently of the visible in reflected light features or supplement or expand a visible already in incident light part.

In einer bevorzugten Ausgestaltung weist der erste Kennzeichnungsteil eine Vielzahl von geraden, parallelen oder divergierenden Schnittlinien in dem Substrat auf und/oder weist der zweite Kennzeichnungsteil eine Vielzahl von geraden, parallelen oder divergierenden Modifikationslinien in dem Sicherheitselement auf.In a preferred embodiment, the first identification part has a multiplicity of straight, parallel or divergent cutting lines in the substrate and / or the second identification part has a multiplicity of straight, parallel or divergent modification lines in the security element.

Alternativ oder zusätzlich weist mit Vorteil der erste Kennzeichnungsteil eine Vielzahl von gekrümmten, äquidistanten oder divergierenden Schnittlinien in dem Substrat auf und/oder weist der zweite Kennzeichnungsteil eine Vielzahl von gekrümmten, äquidistanten oder divergierenden Modifikationslinien in dem Sicherheitselement auf.Alternatively or additionally, the first identification part advantageously has a multiplicity of curved, equidistant or divergent cutting lines in the substrate and / or the second identification part has a multiplicity of curved, equidistant or divergent modification lines in the security element.

Mit besonderem Vorteil schließen die Schnittlinien und die Modifikationslinien dabei ohne Versatz zumindest teilweise aneinander an. In einer vorteilhaften Gestaltung schließen alle Modifikationslinien ohne Versatz an Schnittlinien an.With special advantage, the cut lines and the modification lines at least partially adjoin one another without offset. In an advantageous embodiment, all modification lines connect to intersection lines without offset.

In allen Gestaltungen sind die Schnittlinien bzw. Modifikationslinien vorzugsweise mit einer Breite zwischen 0,05 mm und 1 mm ausgebildet. Der Mitte-zu-Mitte-Abstand liegt mit Vorteil zwischen 0,05 mm und 1,5 mm, bevorzugt zwischen 0,4 mm und 1,0 mm, inbesondere bei ca. 0,7 mm, wobei der Mitte-zu-Mitte-Abstand konstant (äquidistante Schnittlinien bzw. Modifikationslinien) oder variabel (divergierende Schnittlinien bzw. Modifikationslinien) sein kann.In all designs, the cut lines or modification lines are preferably formed with a width between 0.05 mm and 1 mm. The center-to-center distance is advantageously between 0.05 mm and 1.5 mm, preferably between 0.4 mm and 1.0 mm, in particular about 0.7 mm, with the center-to-center Distance can be constant (equidistant cut lines or modification lines) or variable (divergent cut lines or modification lines).

In einer vorteilhaften Ausgestaltung ist der Modifikationsbereich durch einen Materialabtrag des Sicherheitselements gebildet, insbesondere durch eine lokale Demetallisierung einer Metallschicht oder durch einen lokalen Abtrag einer Farbschicht. Der Modifikationsbereich kann auch durch eine irreversible Änderung der optischen Eigenschaften des Sicherheitselements gebildet sein, insbesondere durch eine lokale Änderung der sichtbaren Farbe oder der Transparenz des Sicherheitselements. Im letzteren Fall kann die irreversible Änderung beispielsweise in einer lokalen Umwandlung eines transparenten Bereichs in einen opaken Bereich bestehen.In an advantageous embodiment, the modification region is formed by a material removal of the security element, in particular by a local demetallization of a metal layer or by a local removal of a color layer. The modification region can also be formed by an irreversible change in the optical properties of the security element, in particular by a local change in the visible color or the transparency of the security element. In the latter case, the irreversible change, for example, in a local transformation of a transparent area into an opaque area.

Vorzugsweise stellen der erste und zweite Kennzeichnungsteil aufeinander bezogene oder einander ergänzende Informationen dar. Beispielsweise kann die Information des zweiten Kennzeichnungsteils die Information des ersten Kennzeichnungsteils wiederholen oder zu einer Gesamtinformation ergänzen.Preferably, the first and second identification part represent related or complementary information. For example, the information of the second identification part can repeat the information of the first identification part or supplement it to a total information.

Gemäß einer vorteilhaften Erfindungsvariante ist der erste Kennzeichnungsteil vollständig von dem Sicherheitselement überdeckt. Der erste Kennzeichnungsteil ist dann bei Betrachtung der Datenträgervorderseite in Aufsicht in der Regel nicht oder nur kaum sichtbar. Im Durchlicht tritt die zumindest eine Öffnung des ersten Kennzeichnungsteils dagegen hell leuchtend hervor. Beim Wechsel von Auflicht zu Durchlicht ergibt sich so ein auffälliger Wechsel des visuellen Erscheinungsbilds der Kennzeichnung.According to an advantageous variant of the invention, the first identification part is completely covered by the security element. When looking at the data medium front page in supervision, the first identification part is then usually not or only barely visible. In transmitted light, however, the at least one opening of the first identification part emerges brightly illuminated. When changing from reflected light to transmitted light, this results in a striking change in the visual appearance of the marking.

Nach einer weiteren, ebenfalls vorteilhaften Erfindungsvariante ist der erste Kennzeichnungsteil teilweise von dem Sicherheitselement überdeckt und teilweise unmittelbar neben dem Sicherheitselement angeordnet. Durch den neben dem Sicherheitselement angeordneten Teil wird die Aufmerksamkeit des Benutzers auf den Auflicht-/Durchlicht-Effekt hingelenkt, wie weiter unten im Detail erläutert.According to a further, likewise advantageous variant of the invention, the first identification part is partially covered by the security element and partially arranged directly next to the security element. By the arranged next to the security element part of the user's attention is directed to the reflected light / transmitted light effect, as explained in detail below.

In einer Weiterbildung der Erfindung kann das Substrat zumindest in einem Teilbereich mit einem lasermodifzierbaren Markierungsstoff versehen sein, und kann die zumindest eine Öffnung des ersten Kennzeichnungsteils in diesem Teilbereich einen durch Einwirkung von Laserstrahlung modifizierten Randbereich aufweisen. Vorzugsweise ist das Substrat dabei in dem Teilbereich mit einem Markierungsstoff versehen, dessen sichtbare Farbe durch die Einwirkung der Laserstrahlung veränderbar ist, so dass die zumindest eine Öffnung des ersten Kennzeichnungsteils in diesem Teilbereich einen farbigen Randbereich aufweist. Durch den Einsatz unterschiedlicher Markierungsstoffe können in verschiedenen Teilbereichen auch verschiedenfarbige Ränder erzeugt werden.In one development of the invention, the substrate may be provided with a laser-modifiable marking substance at least in a partial region, and the at least one opening of the first identification part in this partial region may have an edge region modified by the action of laser radiation. Preferably, the substrate is in the Subregion provided with a marker whose visible color is changed by the action of the laser radiation, so that the at least one opening of the first marking part in this subregion has a colored edge region. Through the use of different markers also different colored edges can be generated in different sub-areas.

Alternativ oder zusätzlich kann das Substrat mit einem Markierungsstoff versehen sein, dessen Infrarot-absorbierende, magnetische, elektrische oder lumineszierende Eigenschaften durch die Einwirkung der Laserstrahlung veränderbar sind. Die Öffnungen eines mit einem solchen Markierungsstoff versehenen Teilbereichs weisen dann einen Randbereich mit gegenüber ihrem Umfeld veränderten Infrarot-absorbierenden, magnetischen, elektrischen oder lumineszierenden Eigenschaften auf, die eine weiter Möglichkeit zur maschinellen Echtheitsprüfung bieten.Alternatively or additionally, the substrate may be provided with a marking substance whose infrared-absorbing, magnetic, electrical or luminescent properties can be changed by the action of the laser radiation. The openings of a subarea provided with such a marker substance then have an edge region with infrared-absorbing, magnetic, electrical or luminescent properties which are changed with respect to their environment and which offer a further possibility for automated authenticity testing.

Als Markierungsstoffe können vorteilhaft lasermodifizierbare Effektpigmente oder auch pigmentfreie lasermodifizierbare Markierungsstoffe eingesetzt werden. Beispiele geeigneter Markierungsstoffe sowie die Art und Weise ihrer Auf- oder Einbringung in ein Substrat und die Entstehung eines perfekt gepasserten Rands bei Laserbeaufschlagung sind in der Druckschrift WO 2010/072329A1 näher beschrieben, deren Offenbarung insoweit in die vorliegende Anmeldung aufgenommen wird.As markers advantageously laser-modifiable effect pigments or pigment-free laser-modifiable markers can be used. Examples of suitable marking materials as well as the manner of their incorporation or incorporation into a substrate and the formation of a perfectly adapted edge when exposed to laser are described in the document WO 2010 / 072329A1 described in more detail, the disclosure of which is included in the present application in this respect.

Das Substrat des Datenträgers kann aus Papier, insbesondere Baumwollpapier, bestehen. Selbstverständlich kann auch Papier eingesetzt werden, welches einen Anteil x polymeren Materials im Bereich von 0 < x < 100 Gew.-% enthält. In ebenfalls bevorzugten Ausgestaltungen ist das Substrat ein Kunststoff, insbesondere eine Kunststofffolie, z. B. eine Folie aus Polyethylen (PE), Polyethylenterephthalat (PET), Polybutylenterephthalat (PBT), Polyethylennaphthalat (PEN), Polypropylen (PP) oder Polyamid (PA). Die Folie kann ferner monoaxial oder biaxial gereckt sein. Die Reckung der Folie führt unter anderem dazu, dass sie polarisierende Eigenschaften erhält, die als weiteres Echtheitsmerkmal genutzt werden können. Die zur Ausnutzung dieser Eigenschaften erforderlichen Hilfsmittel, wie Polarisationsfilter, sind dem Fachmann bekannt.The substrate of the data carrier may consist of paper, in particular cotton paper. Of course, it is also possible to use paper which contains a proportion of polymeric material in the range of 0 <x <100% by weight. In likewise preferred embodiments, the substrate is a plastic, in particular a plastic film, for. B. a film of polyethylene (PE), Polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polypropylene (PP) or polyamide (PA). The film may also be monoaxially or biaxially stretched. Among other things, the stretching of the film leads to it obtaining polarizing properties which can be used as a further authenticity feature. The tools required for exploiting these properties, such as polarization filters, are known to the person skilled in the art.

In gegenwärtig als besonders vorteilhaft angesehenen Ausgestaltungen ist der Datenträger ein Papier-Folien-Verbund oder ein Folien-Verbund, bei dem das Substrat und das Sicherheitselement zwischen zwei Folienlagen eingebettet sind. Insbesondere kommen dreischichtig aufgebaute Verbunde mit einer Schichtenfolge Folie/Papier/Folie oder Folie/Folie/Folie in Betracht.In presently considered particularly advantageous embodiments, the data carrier is a paper-film composite or a film composite in which the substrate and the security element are embedded between two film layers. In particular, three-layer composites having a layer sequence of film / paper / film or film / film / film are suitable.

Das Sicherheitselement des Datenträgers ist vorzugsweise ein Sicherheitsfaden, ein Etikett, ein Transferelement, ein Sicherheitsdruck oder eine partielle Metallisierung. Des Weiteren kann die Metallisierung grundsätzlich auch durch eine Metalleffektfarbe, beispielsweise eine Metalleffektpigmente aufweisende Metalleffektfarbe, ersetzt werden. Auch bei einem metallisierten Hologramm oder einer ähnlichen Beugungsstruktur kann die dort vorgesehene Metallisierung durch eine solche Metalleffektfarbe oder eine hochbrechende dielektrische Schicht ersetzt werden.The security element of the data carrier is preferably a security thread, a label, a transfer element, a security print or a partial metallization. Furthermore, the metallization can basically also be replaced by a metallic effect color, for example a metallic effect color having metallic effect pigments. Even with a metallized hologram or a similar diffraction structure, the metallization provided there can be replaced by such a metallic effect color or a high-refractive dielectric layer.

In zweckmäßigen Gestaltungen ist der Modifikationsbereich des Sicherheitselements in einer Metallschicht ausgebildet. Bei der Metallschicht kann es insbesondere um eine Hologrammmetallisierung, die Absorber- oder Reflektorschicht eines farbkippenden Dünnschichtelements, eine metallische Mattstruktur, oder eine metallische Beschichtung einer Mikrostruktur, beispielsweise einem Array von Mikrolinsen oder einem Subwellenlängengitter, handeln.In suitable embodiments, the modification region of the security element is formed in a metal layer. The metal layer may in particular be a hologram metallization, the absorber or reflector layer of a color-shifting thin-film element, a metallic matt structure, or a metallic coating of a microstructure, for example an array of microlenses or a sub-wavelength grating.

Die Erfindung umfasst auch ein Verfahren zum Herstellen eines Datenträgers der oben genannten Art, bei dem

  • ein Substrat bereitgestellt wird, das mit einem Sicherheitselement verbunden ist, und
  • der Datenträger durch Einwirkung von Laserstrahlung mit einer Kennzeichnung versehen wird, die einen im Durchlicht gegenüber Auflicht veränderten visuellen Eindruck aufweist,
    wobei
  • durch die Einwirkung der Laserstrahlung ein erster Kennzeichnungsteil mit zumindest einer Öffnung in dem Substrat gebildet wird, und
  • im selben Arbeitsgang im Passer zu der Öffnung des ersten Kennzeichnungsteils in dem Sicherheitselement durch einen Modifikationsbereich ein zweiter Kennzeichnungsteil gebildet wird, in dem das visuelle Erscheinungsbild des Sicherheitselements durch die Einwirkung der Laserstrahlung modifiziert wird.
The invention also includes a method for producing a data carrier of the above type, in which
  • a substrate is provided which is connected to a security element, and
  • the data carrier is provided with an identification by the action of laser radiation, which has a visual impression changed in transmitted light compared to reflected light,
    in which
  • is formed by the action of the laser radiation, a first identification part with at least one opening in the substrate, and
  • in the same operation in the register to the opening of the first identification part in the security element by a modification region, a second identification part is formed in the register, in which the visual appearance of the security element is modified by the action of the laser radiation.

Der erste und zweite Kennzeichnungsteil werden mit Vorteil durch Laserbeaufschlagung mit einem Infrarot-Laser, vorzugsweise mit einem CO2-Laser, erzeugt.The first and second identification part are advantageously produced by laser application with an infrared laser, preferably with a CO 2 laser.

Nach einer Weiterbildung kann das Substrat zumindest in einem Teilbereich mit einem lasermodifizierbaren Markierungsstoff versehen werden, so dass die zumindest eine Öffnung des ersten Kennzeichnungsteils in diesem Teilbereich durch die Einwirkung der Laserstrahlung in ihrem Randbereich modifiziert wird. Vorzugsweise wird das Sicherheitspapier in dem Teilbereich mit einem Markierungsstoff versehen, dessen sichtbare Farbe durch die Einwirkung der Laserstrahlung veränderbar ist, so dass die zumindest eine Öffnung des ersten Kennzeichnungsteils in diesem Teilbereich durch die Einwirkung der Laserstrahlung mit einem farbigen Randbereich versehen wird.According to a further development, the substrate can be provided with a laser-modifiable marking substance at least in a partial region, so that the at least one opening of the first identification part in this partial region is modified by the action of the laser radiation in its edge region. The security paper is preferably provided in the subregion with a marking substance whose visible color can be changed by the action of the laser radiation, so that the at least one opening of the first marking part in this subregion is provided with a colored edge region by the action of the laser radiation.

Mit Vorteil wird das mit zumindest einer Öffnung versehene Substrat mit dem modifizierten Sicherheitselement zwischen zwei Folien eingebettet, um eine Folien-Verbund-Struktur zu bilden.Advantageously, the substrate provided with at least one opening is embedded with the modified security element between two foils in order to form a film composite structure.

Weitere Ausführungsbeispiele sowie Vorteile der Erfindung werden nachfolgend anhand der Figuren erläutert, bei deren Darstellung auf eine maßstabs- und proportionsgetreue Wiedergabe verzichtet wurde, um die Anschaulichkeit zu erhöhen.Further exemplary embodiments and advantages of the invention are explained below with reference to the figures, in the representation of which a representation true to scale and proportion has been dispensed with in order to increase the clarity.

Es zeigen:

Fig. 1
schematisch eine Banknote nach einem Ausführungsbeispiel der Erfindung,
Fig. 2
einen Detailausschnitt der Banknote der Fig.1 im Bereich der Kennzeichnung,
Fig. 3
einen Querschnitt durch die Banknote entlang der Linie III-III der Fig. 2,
Fig. 4
den unterschiedlichen visuellen Eindruck der Banknote der Fig.1 bei Betrachtung von Vorder- und Rückseite im Auflicht bzw. Durchlicht, wobei (a) den visuellen Eindruck bei Auflichtbetrachtung der Vorderseite, (b) den visuellen Eindruck bei Durchlichtbetrachtung der Vorderseite, (c) den visuellen Eindruck bei Auflichtbetrachtung der Rückseite und (d) den visuellen Eindruck bei Durchlichtbetrachtung der Rückseite zeigt,
Fig. 5
in (a) bis (d) in einer Darstellung wie in Fig. 4 den unterschiedlichen visuelle Eindruck einer Banknote nach einem anderen Ausführungsbeispiel der Erfindung,
Fig. 6
für eine Banknote nach einem weiteren Ausführungsbeispiel der Erfindung in (a) den visuellen Eindruck bei Auflichtbetrachtung der Vorderseite und in (b) den visuellen Eindruck bei Durchlichtbetrachtung der Vorderseite,
Fig. 7 und 8
im Querschnitt jeweils einen Datenträger nach weiteren Ausführungsbeispielen der Erfindung,
Fig. 9 bis 12
jeweils einen Ausschnitt einer Aufsicht auf einen Datenträger nach einem weiteren Ausführungsbeispiel der Erfindung,
Fig. 13
eine erfindungsgemäße Folienverbundbanknote im Querschnitt, und
Fig. 14
in (a) bis (d) verschiedene Varianten zur Ausgestaltung des gerasterten Laserlochs.
Show it:
Fig. 1
schematically a banknote according to an embodiment of the invention,
Fig. 2
a detail of the bill of the Fig.1 in the field of labeling,
Fig. 3
a cross section through the bill along the line III-III of Fig. 2 .
Fig. 4
the different visual impression of the banknote the Fig.1 when viewing the front and back in incident light, wherein (a) the visual impression in incident light observation of the front side, (b) the visual impression in transmitted light observation of the front side, (c) the visual impression in incident light observation of the back and (d) shows the visual impression when viewed through the back of the light,
Fig. 5
in (a) to (d) in an illustration as in Fig. 4 the different visual impression of a banknote according to another embodiment of the invention,
Fig. 6
for a banknote according to a further embodiment of the invention in (a) the visual impression in reflected light viewing of the front side and in (b) the visual impression in transmitted light viewing of the front side,
FIGS. 7 and 8
in cross section in each case a data carrier according to further embodiments of the invention,
Fig. 9 to 12
in each case a section of a plan view of a data carrier according to a further exemplary embodiment of the invention,
Fig. 13
a film composite banknote according to the invention in cross section, and
Fig. 14
in (a) to (d) different variants for the design of the screened laser hole.

Die Erfindung wird nun am Beispiel von Banknoten erläutert. Fig.1 zeigt dazu schematisch eine Banknote 10, bei der auf das Banknotenpapier 12 ein Sicherheitselement in Form eines metallisierten Hologrammstreifens 14 aufgebracht ist. Der Hologrammstreifen 14 zeigt ein Hologramm, das im Ausführungsbeispiel aus einer wiederholten Abfolge eines Portraits 16 und der Wertzahl "50" (Bezugszeichen 18) der Banknote 10 besteht.The invention will now be explained using the example of banknotes. Fig.1 schematically shows a banknote 10, in which the banknote paper 12, a security element in the form of a metallized hologram strip 14 is applied. The hologram strip 14 shows a hologram, which in the exemplary embodiment consists of a repeated sequence of a portrait 16 and the value "50" (reference numeral 18) of the banknote 10.

Im Bereich des Hologrammstreifens 14 ist die Banknote 10 erfindungsgemäß zudem mit einer Kennzeichnung 30 versehen, die einen im Durchlicht gegenüber Auflicht veränderten visuellen Eindruck aufweist. Dieser veränderte visuelle Eindruck ist weiter unten in den verschiedenen Ansichten der Fig. 4 illustriert und kann in der schematischen Gesamtdarstellung der Fig.1 naturgemäß nicht wirklichkeitsgetreu wiedergegeben werden.In the region of the hologram strip 14, the banknote 10 according to the invention is additionally provided with a marking 30 which has a visual impression changed in the transmitted light compared to reflected light. This altered visual impression is further down in the different views of the Fig. 4 illustrated and can be seen in the schematic overall view of Fig.1 naturally not reproduced faithfully.

Zur genaueren Beschreibung der Kennzeichnung 30 zeigt Fig. 2 einen Detailausschnitt der Banknote 10 im Bereich der Kennzeichnung 30 während Fig. 3 einen Querschnitt entlang der Linie III-III der Fig. 2 zeigt.For a more detailed description of the marking 30 shows Fig. 2 a detail of the banknote 10 in the area of the marking 30 during Fig. 3 a cross section along the line III-III of Fig. 2 shows.

Wie am besten im Querschnitt der Fig. 3 zu erkennen, enthält der auf das Banknotenpapier 12 aufgebrachte Hologrammstreifen 14 eine Prägelackschicht 20, in die die gewünschte Hologrammstruktur 22 mit dem Portrait 16 und der Wertzahl 18 eingeprägt ist, sowie eine auf die Prägelackschicht 20 aufgebrachte Hologrammmetallisierung 24, beispielsweise aus Aluminium. Das Hologramm 16,18 stellt somit ein Reflexionshologramm dar, das den visuellen Eindruck bei Betrachtung der Banknotenvorderseite im Auflicht dominiert (Fig. 4(a)).How best in the cross section of Fig. 3 1, the hologram strip 14 applied to the banknote paper 12 contains an embossing lacquer layer 20, in which the desired hologram structure 22 with the portrait 16 and the value 18 is embossed, and a hologram metallization 24, for example made of aluminum, applied to the embossing lacquer layer 20. The hologram 16, 18 thus represents a reflection hologram that dominates the visual impression when viewing the front of the banknotes in incident light ( Fig. 4 (a) ).

Es versteht sich, dass es sich bei dem in Fig. 3 gezeigten Querschnitt lediglich um eine schematische Darstellung handelt und z.B. der Hologrammstreifen 14 oder das Banknotenpapier 12 weitere Schichten aufweisen kann, die in der Regel nicht zur optischen Wirkung der erfindungsgemäßen Kennzeichnung beitragen und daher nicht weiter dargestellt sind. Z.B. kann das Banknotensubstrat und/oder das Sicherheitselement eine oder mehrere Klebstoff- und/oder Primerschichten aufweisen. Sofern diese Schichten vorgesehen sind, werden diese durch Beaufschlagung mit Laserstrahlung gegebenenfalls abgetragen bzw. in ihrem Erscheinungsbild modifiziert.It is understood that it is in the in Fig. 3 shown cross-section is only a schematic representation and, for example, the hologram strip 14 or the banknote paper 12 may have further layers, which do not contribute to the optical effect of the inventive label and are therefore not shown in the rule. For example, the banknote substrate and / or the security element may have one or more adhesive and / or primer layers. If these layers are provided, they are possibly removed by application of laser radiation or modified in their appearance.

Des Weiteren können die in Fig. 3 gezeigten Schichten auch anders angeordnet sein. Beispielsweise kann die Metallisierung 24 auch zwischen Substrat 12 und Lackschicht 20 angeordnet sein. Eine solche Variante weist gegenüber der in Fig. 3 gezeigten Ausführungsform den zusätzlichen Vorteil auf, dass die Hologrammstruktur und die Metallisierung durch die Anordnung zwischen Substrat und Lackschicht vor Manipulationen und anderen Fälschungsversuchen geschützt sind. Auch können solche Ausführungsformen mit Transferverfahren auf das Zielsubstrat aufgebracht werden.Furthermore, the in Fig. 3 layers shown also be arranged differently. For example, the metallization 24 may also be arranged between the substrate 12 and the lacquer layer 20. Such a variant is opposite to in Fig. 3 embodiment shown, the additional advantage that the hologram structure and the metallization are protected by the arrangement between the substrate and resist layer from manipulation and other counterfeiting attempts. Also, such embodiments may be applied to the target substrate by transfer methods.

Mit Bezug auf die Aufsicht der Fig. 2 ist die Kennzeichnung 30 zweiteilig aufgebaut und besteht aus einem ersten und einem zweiten Kennzeichnungsteil, die beide im selben Arbeitsgang durch Beaufschlagung des Banknotenpapiers 12 und des Hologrammstreifens 14 mit Laserstrahlung erzeugt wurden und die daher trotz ihres unterschiedlichen Charakters in perfektem Passer zueinander stehen.With reference to the supervision of Fig. 2 the label 30 is constructed in two parts and consists of a first and a second identification part, both of which were generated in the same operation by loading the banknote paper 12 and the hologram strip 14 with laser radiation and therefore stand in perfect register despite their different nature.

Als ersten Kennzeichnungsteil enthält die Kennzeichnung 30 ein gerastertes Laserloch 32, das durch ein Linienraster aus einer Vielzahl paralleler Schnittlinien 34 gebildet ist, die sich durch das Banknotenpapier 12 und den Hologrammstreifen 14 hindurch erstrecken. Das gerasterte Laserloch 32 ist allgemein in Form eines Musters, von Zeichen oder einer Codierung ausgestaltet und hat im Ausführungsbeispiel die Form eines Ahornblatts 36 in einem quadratischen Rahmen 38.As a first identification part, the tag 30 includes a screened laser hole 32 formed by a line grid of a plurality of parallel cut lines 34 extending through the banknote paper 12 and the hologram strip 14 extend therethrough. The rastered laser hole 32 is generally in the form of a pattern, character, or code, and in the embodiment has the shape of a maple leaf 36 in a square frame 38.

Als ihren zweiten Kennzeichnungsteil enthält die Kennzeichnung 30 einen Modifikationsbereich 40, in dem das Banknotenpapier 12 nicht geschnitten ist, sondern in dem nur die Metallisierung 24 des Holgrammstreifens 14 in einer Vielzahl paralleler Demetallisierungslinien 42 abgetragen ist und das visuelle Erscheinungsbild des Holgrammstreifens 14 dadurch modifiziert ist.As its second identification part, the tag 30 includes a modification area 40 in which the banknote paper 12 is not cut, but in which only the metallization 24 of the hologram strip 14 has been removed in a plurality of parallel demetallization lines 42 and the visual appearance of the hologram strip 14 is thereby modified.

Wie am besten in Fig. 2 zu erkennen, schließen die Demetallisierungslinien 42 perfekt gepassert an die außerhalb des Modifikationsbereichs 40 liegenden Schnittlinien 34 an. Die perfekte Passerung von Demetallisierungslinien 42 und Schnittlinien 34 wird dadurch sichergestellt, dass beide Linienarten 34, 42 durch Laserbeaufschlagung mit demselben Bearbeitungslaserstrahl im selben Arbeitsgang erzeugt werden. Die unterschiedlichen Bearbeitungsergebnisse, nämlich einerseits das Schneiden des Hologrammstreifens 14 und des Banknotenpapiers 12 und andererseits nur die Demetallisierung der Hologrammmetallisierung 24, werden durch eine entsprechende Variation der Laserparameter, insbesondere der Laserleistung und/oder der Schnittgeschwindigkeit beim Bearbeitungsvorgang erreicht.How best in Fig. 2 4, the demetallization lines 42 are fitted perfectly to the cut lines 34 located outside the modification region 40. The perfect registration of demetallization lines 42 and cut lines 34 is ensured by the fact that both line types 34, 42 are generated by laser application with the same processing laser beam in the same operation. The different processing results, on the one hand the cutting of the hologram strip 14 and the banknote paper 12 and on the other hand only the demetallization of the hologram metallization 24, are achieved by a corresponding variation of the laser parameters, in particular the laser power and / or the cutting speed during the machining process.

Wie in Fig. 3 gezeigt, ist der Bereich der Schnittlinien 34 beidseitig jeweils mit einer transparenten Folie 50 abgedeckt. Diese Abdeckung kann nur den Schnittlinienbereich umfassen, oder kann sich auch über einen größeren Bereich, beispielsweise die gesamte Banknote 10, erstrecken. Besonders gut lässt sich eine solche Abdeckung bei Verbundbanknoten mit einem Schichtaufbau Folie/Substrat mit Sicherheitselement/Folie verwirklichen. Dabei liegt nicht nur der Schnittlinienbereich, sondern das gesamte Sicherheitselement 14 vollständig zwischen den Verbundfolien 50 und ist dadurch besonders gut geschützt.As in Fig. 3 2, the area of the cutting lines 34 is covered on both sides with a transparent film 50. This cover may comprise only the cut line area, or may extend over a larger area, for example the entire banknote 10. Such a cover can be realized particularly well in the case of composite banknotes with a layer structure film / substrate with security element / foil. there Not only is the cutting line area, but the entire security element 14 completely between the composite films 50 and is therefore particularly well protected.

Der unterschiedliche visuelle Eindruck der Banknote 10 bei Betrachtung von Vorder- und Rückseite im Auflicht bzw. Durchlicht ist in Fig. 4 illustriert, wobei Fig. 4(a) den visuellen Eindruck bei Auflichtbetrachtung der Vorderseite, Fig. 4(b) den visuellen Eindruck bei Durchlichtbetrachtung der Vorderseite, Fig. 4(c) den visuellen Eindruck bei Auflichtbetrachtung der Rückseite und Fig. 4(d) den visuellen Eindruck bei Durchlichtbetrachtung der Rückseite zeigt.The different visual impression of the banknote 10 when viewing the front and back in reflected light or transmitted light is in Fig. 4 illustrated, where Fig. 4 (a) the visual impression when viewing the front of the lens, Fig. 4 (b) the visual impression when the transmitted light is viewed from the front, Fig. 4 (c) the visual impression in incident light viewing the back and Fig. 4 (d) shows the visual impression when viewing the transmitted light on the back.

Mit Bezug zunächst auf Fig. 4(a) dominiert bei Betrachtung der Banknotenvorderseite im Auflicht das Reflexionshologramm 16,18 des Hologrammstreifens 14 den visuellen Eindruck. Der äußere Umriss 38 des gerasterten Laserlochs ist schwach erkennbar, die Form des Ahornblatts 36 jedoch nicht, da die perfekt zueinander gepasserten Demetallisierungslinien 42 und Schnittlinien 34 für das Auge nur einen sehr geringen Kontrastunterschied aufweisen. Aus den Betrachtungsrichtungen, in die das Hologramm 16,18 rekonstruiert, überstrahlt das Hologramm ohnehin das gerasterte Laserloch 32 und den Modifikationsbereich 40. Wegen des geringen Kontrastunterschieds der Demetallisierungslinien 42 und der Schnittlinien 34 ist das innere Motiv "Ahornblatt" 36 zudem auch unter Betrachtungswinkeln, aus denen das Hologramm 16,18 nur schwer zu sehen ist, nicht erkennbar.With reference first to Fig. 4 (a) When looking at the banknote front side in reflected light, the reflection hologram 16, 18 of the hologram strip 14 dominates the visual impression. The outer contour 38 of the screened laser hole is faintly discernible, but the shape of the maple leaf 36 is not, since the perfectly matched demetalization lines 42 and cut lines 34 for the eye have only a very small difference in contrast. From the viewing directions into which the hologram 16, 18 is reconstructed, the hologram in any case outshines the rastered laser hole 32 and the modification region 40. Because of the low contrast difference of the demetalization lines 42 and the cut lines 34, the inner motif "maple leaf" 36 is also under viewing angles. from which the hologram 16,18 is difficult to see, not recognizable.

Wird die Banknote nun von ihrer Vorderseite her im Durchlicht betrachtet, so tritt überraschend das Design 36 des gerasterten Laserlochs 32 in den Vordergrund, wie in Fig. 4(b) dargestellt. Das Linienraster der Schnittlinien 34 tritt im Durchlicht hell leuchtend vor dem dunklen Hintergrund der Metallisierung 24 des Hologrammstreifens 14 hervor. Auch der Umriss des Ahornblatts 36 und die Demetallisierungslinien 42 sind im Durchlicht gut erkennbar, allerdings wegen des im Modifikationsbereich 40 noch vorhandenen Papiersubstrats 12 mit geringerer Helligkeit. Insgesamt ergibt sich beim Wechsel von Auflicht zu Durchlicht somit ein frappanter Wechsel des visuellen Erscheinungsbilds der Kennzeichnung 30.If the banknote is now viewed from the front side in transmitted light, the design 36 of the screened laser hole 32 surprisingly comes to the fore, as in FIG Fig. 4 (b) shown. The line grid of the cut lines 34 in the transmitted light shines bright against the dark background of the metallization 24 of the hologram strip 14. The outline of the maple leaf 36 and the demetallization lines 42 are also clearly visible in transmitted light, but because of the paper substrate 12 still present in the modification area 40 with lower brightness. Overall, the change from reflected light to transmitted light thus results in a striking change in the visual appearance of the marking 30.

Mit Bezug auf Fig. 4(c) ist bei Betrachtung der Rückseite der Banknote 10 im Auflicht das Design 36 des gerasterten Laserlochs 32 durch die Schnittlinien 34 im Banknotenpapier gut erkennbar. Der auf der Vorderseite aufgebrachte Hologrammstreifen 14 und die Demetallisierungslinien 42 sind auf der Rückseite im Auflicht nicht zu sehen, so dass das Innere des Ahornblatts 36 ohne Struktur erscheint. Soll das gerasterte Laserloch 32 von der Rückseite nicht erkennbar sein, kann die Banknotenrückseite dort auch mit einer im Wesentlichen opaken Schicht, insbesondere einer Farbannahmeschicht, versehen sein.Regarding Fig. 4 (c) When viewing the reverse side of the banknote 10 in incident light, the design 36 of the screened laser hole 32 can be clearly seen through the cut lines 34 in the banknote paper. The hologram strip 14 applied on the front side and the demetallization lines 42 can not be seen on the rear side in reflected light, so that the interior of the maple leaf 36 appears without structure. If the rastered laser hole 32 is not recognizable from the rear side, the banknote reverse side can also be provided there with a substantially opaque layer, in particular a dye-accepting layer.

Bei Durchlichtbetrachtung von der Rückseite her entspricht der visuelle Eindruck der Banknote 10 im Wesentlichen dem Vorderseiteneindruck. Wie in Fig. 4(d) dargestellt, sind im Durchlicht sowohl das Linienraster der Schnittlinien 34 als auch die Demetallisierungslinien 42 vor dem dunklen Hintergrund der Metallisierung 24 gut zu erkennen.When viewed from the rear side by transmitted light, the visual impression of the banknote 10 substantially corresponds to the front impression. As in Fig. 4 (d) In the transmitted light, both the line grid of the cut lines 34 and the demetallization lines 42 are clearly visible against the dark background of the metallization 24.

Um die Aufmerksamkeit des Benutzers auf den Auflicht-/Durchlicht-Wechsel hinzulenken, kann das gerasterte Laserloch aus dem Hologrammstreifen 14 seitlich herausragen. Der Benutzer erkennt dann von der Banknotenvorderseite her bereits im Auflicht einen Teil des gerasterten Laserloch und wird dadurch zur Durchsichtbetrachtung angeregt. Dabei erscheint dann überraschend ein weiteres Design, nämlich der im Auflicht von dem Hologrammstreifen 14 verdeckte oder dominierte Teil des gerasterten Laserlochs. Dieser überraschende Ergänzungseffekt ist in den Figuren 5 und 6 anhand von zwei Ausführungsbeispielen illustriert.In order to draw the user's attention to the reflected light / transmitted light change, the screened laser hole can protrude laterally out of the hologram strip 14. The user then recognizes from the front of the banknotes already in reflected light part of the screened laser hole and is thereby stimulated for review viewing. It then surprisingly another design, namely the reflected light of the Hologram strip 14 hidden or dominated part of the screened laser hole. This surprising supplement effect is in the Figures 5 and 6 illustrated by two embodiments.

Das Ausführungsbeispiel der Fig. 5 basiert auf dem Ausführungsbeispiel der Fig. 4, allerdings enthält das gerasterte Laserloch 32 der Fig. 5 nicht nur das Design eines Ahornblatts 36 in quadratischem Rahmen 38, das von dem Hologrammstreifen 14 überdeckt ist, sondern enthält zusätzlich ein Design 60, in dem die Wertzahl "50" (Bezugszeichen 62) in einem elliptischen Rahmen 64 angeordnet ist.The embodiment of Fig. 5 is based on the embodiment of Fig. 4 However, the screened laser hole 32 of the Fig. 5 not only the design of a maple leaf 36 in square frame 38, which is covered by the hologram strip 14, but additionally includes a design 60, in which the value "50" (reference numeral 62) is arranged in an elliptical frame 64.

Dieser Design-Teil 60 des gerasterten Laserlochs 32 ist seitlich neben, jedoch unmittelbar an den Hologrammstreifen 14 angrenzend angeordnet und ist somit auch bei Auflichtbetrachtung der Banknotenvorderseite sichtbar, wie in Fig. 5(a) dargestellt. Hält der Benutzer nun die Banknote gegen das Licht, um das Design 60 besser erkennen zu können, so tritt zu dem visuellen Eindruck des Designs 60 überraschend das Design des Ahornblatts 36 im quadratischen Rahmen 38 hinzu, wie in Fig. 5(b) gezeigt.This design part 60 of the rastered laser hole 32 is arranged laterally next to, but directly adjacent to, the hologram strip 14 and is therefore also visible in front-side reflected-light viewing, as in FIG Fig. 5 (a) shown. If the user now holds the banknote against the light in order to be able to better recognize the design 60, the design impression of the design 60 surprisingly adds the design of the maple leaf 36 in the square frame 38, as in FIG Fig. 5 (b) shown.

Das Erscheinungsbild bei Betrachtung von der Banknotenrückseite entspricht bis auf den zusätzlich vorhandenen Design-Teil 60 dem der Fig. 4. Bei Betrachtung im Auflicht sind das Ahornblatt 36 und die Wertzahl 62 des gerasterten Laserlochs 32 durch die Schnittlinien 34 im Banknotenpapier gut erkennbar, wie in Fig. 5(c) gezeigt. Das Innere des Ahornblatts 36 erscheint dabei strukturlos, da der auf der Vorderseite aufgebrachte Hologrammstreifen 14 und die Demetallisierungslinien 42 auf der Rückseite im Auflicht nicht zu sehen sind. Im Durchlicht treten dann zusätzlich die Demetallisierungslinien 42 hervor, die zusammen mit den Schnittlinien 34 vor dem dunklen Hintergrund der Metallisierung 24 hell aufleuchten, wie in Fig. 5(d) schematisch dargestellt.The appearance when viewed from the back of the banknotes corresponds to the addition of the existing design part 60 of the Fig. 4 , When viewed in incident light, the maple leaf 36 and the value 62 of the screened laser hole 32 are clearly visible through the cut lines 34 in the banknote paper, as in FIG Fig. 5 (c) shown. The interior of the maple leaf 36 appears to be structureless since the hologram strip 14 applied on the front side and the demetallization lines 42 on the rear side can not be seen in reflected light. In transmitted light then occur in addition demetallization lines 42, which together with the cutting lines 34 before the dark Background of metallization 24 brightly lit, as in Fig. 5 (d) shown schematically.

Bei dem Ausführungsbeispiel der Fig. 6 ist, verglichen mit der Gestaltung der Fig. 4, nicht das ursprüngliche Motiv "Ahornblatt" durch ein weiteres Motiv ergänzt, sondern das Motiv "Ahornblatt" selbst ist so weit vergrößert, dass es seitlich aus dem Hologrammstreifen 14 herausragt.In the embodiment of the Fig. 6 is compared with the design of the Fig. 4 , not the original motif "maple leaf" supplemented by another motif, but the motif "maple leaf" itself is so enlarged that it protrudes laterally from the hologram strip 14.

Bei Betrachtung der Banknotenvorderseite im Auflicht (Fig. 6(a)) ist dann nur der aus dem Hologrammstreifen 14 herausragende Teil 70 des gerasterten Laserlochs 32 sichtbar. Der von dem Hologrammstreifen 14 überdeckte Teil 72 des Laserlochs ist durch die Überstrahlung durch das Hologramm 16, 18 und den geringen Kontrastunterschied der Demetallisierungslinien 42 und der Schnittlinien 34 nicht zu erkennen ist, wie oben im Zusammenhang mit Fig. 4(a) bereits erläutert.Looking at the front of the banknotes in incident light ( Fig. 6 (a) ) is then only the protruding from the hologram strip 14 part 70 of the screened laser hole 32 visible. The portion 72 of the laser hole covered by the hologram strip 14 can not be recognized by the overexposure by the hologram 16, 18 and the small contrast difference of the demetallization lines 42 and the cut lines 34, as described above Fig. 4 (a) already explained.

Der Betrachter kann somit im Auflicht zwar sehen, dass ein Durchsichtsmotiv vorhanden ist, er kann dessen Form und Informationsgehalt jedoch nicht erkennen. Er wird daher angeregt, die Banknote 10 gegen das Licht zu halten und im Durchlicht zu betrachten. Tut es dies, so erhält er den visuellen Eindruck der Fig. 6(b), der ihm das vollständige Motiv "Ahornblatt" zeigt. Eine solche Bildvervollständigung im Durchlicht stellt ein eindrucksvolles, leicht zu memorierendes und von jedermann einfach zu prüfendes Echtheitsmerkmal dar.The observer can thus see in the reflected light that a transparency is present, but he can not recognize its form and information content. He is therefore encouraged to hold the bill 10 against the light and to look at the transmitted light. If it does, it gives the visual impression of Fig. 6 (b) showing him the complete motif "maple leaf". Such image completion in transmitted light is an impressive, easy-to-memorize and easy-to-test authenticity feature.

Auch wenn die Erfindung in den bisherigen Ausführungsbeispielen am Beispiel eines Hologrammstreifens 14 erläutert wurde, versteht sich, dass das erfindungsgemäß eingesetzte Sicherheitselement nicht unbedingt ein Hologramm enthalten muss. In anderen erfindungsgemäßen Gestaltungen kann die Modifikation des visuellen Erscheinungsbilds beispielsweise in der Demetallisation einer Metallschicht, beispielsweise der Absorber- oder Reflektorschicht eines farbkippenden Dünnschichtelements, in der Demetallisation einer Mattstruktur, in einem Farbabtrag einer Farbschicht oder der teilweisen oder vollständigen Abtragung einer weiteren Schicht des Sicherheitselements bestehen. Die Abtragung kann sich dabei durch das gesamte Sicherheitselement hindurch bis ins Substrat des Datenträgers, beispielsweise in das Banknotenpapier, erstrecken, so dass dort zusätzlich ein Wasserzeicheneffekt erzeugt wird. In anderen Gestaltungen kann auch eine Schicht des Sicherheitselements mit einem lasersensitiven Merkmalsstoff versehen sein, der durch Einwirkung der Laserstrahlung eine irreversible Veränderung, beispielsweise einen Farbumschlag, erfährt.Although the invention in the previous embodiments has been explained using the example of a hologram strip 14, it is understood that the security element used according to the invention does not necessarily have to contain a hologram. In other embodiments of the invention the modification of the visual appearance, for example in the demetallization of a metal layer, for example the absorber or reflector layer of a color-shifting thin-film element, in the demetallization of a matt structure, in a color removal of a color layer or the partial or complete removal of another layer of the security element. The removal can extend through the entire security element into the substrate of the data carrier, for example into the banknote paper, so that a watermark effect is additionally generated there. In other configurations, a layer of the security element may also be provided with a laser-sensitive feature substance which experiences an irreversible change, for example a color change, as a result of the action of the laser radiation.

Zur Illustration zeigt Fig. 7 im Querschnitt einen Datenträger 80 nach einem Ausführungsbeispiel der Erfindung, bei dem auf ein Papiersubstrat 82 ein Sicherheitselement mit einer Metallschicht 84 aufgebracht ist. Zur Bildung eines ersten Kennzeichnungsteils wurden in die Metallschicht 84 und das Papiersubstrat 82 durch Einwirkung von Laserstrahlung durchgehende Öffnungen 86 eingebracht. Zusätzlich wurden zur Bildung eines zweiten Kennzeichnungsteils in einem Modifikationsbereich 85 im selben Arbeitsgang und damit in perfekter Passerung bei reduzierter Laserleistung Demetallisationslinien 88 nur in die Metallschicht 84 eingebracht, in denen das visuelle Erscheinungsbild des Sicherheitselements modifiziert ist.For illustration shows Fig. 7 in cross-section a data carrier 80 according to an embodiment of the invention, in which a security element with a metal layer 84 is applied to a paper substrate 82. In order to form a first identification part, through openings 86 were introduced into the metal layer 84 and the paper substrate 82 by the action of laser radiation. In addition, in order to form a second identification part in a modification area 85 in the same operation, and thus in perfect registration with reduced laser power, demetallization lines 88 have only been introduced into the metal layer 84 in which the visual appearance of the security element has been modified.

Bei dem Ausführungsbeispiel der Fig. 8 wurde die reduzierte Laserleistung im Modifikationsbereich 85 so eingestellt, dass bei der Erzeugung der Demetallisationslinien 88 nicht nur das Metall der Metallschicht 84 abgetragen wird, sondern auch Dünnstellen 90 im Papiersubstrat 82 erzeugt werden. Bei Betrachtung im Durchlicht zeigt der Modifikationsbereich 85 dann zusätzlich einen Wasserzeicheneffekt.In the embodiment of the Fig. 8 For example, the reduced laser power in the modification region 85 was set such that not only the metal of the metal layer 84 is removed in the formation of the demetallization lines 88, but also thin spots 90 are generated in the paper substrate 82. at When viewed in transmitted light, the modification area 85 additionally shows a watermark effect.

Grundsätzlich gestattet eine Modifikation des Sicherheitselements, beispielsweise durch einen Materialabtrag oder einen Farbumschlag, in der Regel ein komplexeres Design als eine durchgehende Öffnung. Es bietet sich daher an, ein Motiv, das komplexere und weniger komplexe Motivanteile hat, durch eine Kombination von Öffnung und Modifikationsbereich umzusetzen.In principle, a modification of the security element, for example by a material removal or a color change, usually allows a more complex design than a through opening. It therefore makes sense to implement a motif that has more complex and less complex motivational proportions through a combination of opening and modification.

Eine solche Gestaltung ist im Ausführungsbeispiel der Fig. 9 illustriert. Dort ist auf ein Papiersubstrat 100 einer Banknote ein Sicherheitselement-Patch mit einer Metallschicht 102 aufgebracht. Die erfindungsgemäße Kennzeichnung 104 stellt ein Wappenmotiv dar und ist in einem ersten Kennzeichnungsteil durch eine lasergeschnittene Öffnung 106 in dem Papiersubstrat 100 gebildet. In einem zweiten Kennzeichnungsteil ist die Kennzeichnung 104 durch eine Vielzahl von Demetallisationslinien 108 in der Metallschicht 102 gebildet, in denen das visuelle Erscheinungsbild des Sicherheitselement-Patches modifiziert ist. Die höhere Komplexität der Kennzeichnung 104 im Modifikationsbereich mit den Demetallisationslinien 108 gegenüber der lasergeschnittenen Öffnung 106 ist unmittelbar ersichtlich. Zugleich sind die Schnittlinien der Öffnung 106 und die Demetallisationslinien 108 der Metallschicht 102 an den Stellen, an denen sie aneinanderstoßen, perfekt zueinander gepassert, so dass sich im Durchlicht ein einheitliches Design ergibt.Such a design is in the embodiment of Fig. 9 illustrated. There, a security element patch with a metal layer 102 is applied to a paper substrate 100 of a banknote. The marking 104 according to the invention represents a coat of arms motif and is formed in a first identification part by a laser-cut opening 106 in the paper substrate 100. In a second tag part, the tag 104 is formed by a plurality of demetallization lines 108 in the metal layer 102 in which the visual appearance of the security tag patch is modified. The greater complexity of the tag 104 in the modification region with the demetallization lines 108 over the laser cut aperture 106 is readily apparent. At the same time, the cut lines of the opening 106 and the demetallization lines 108 of the metal layer 102 are perfectly matched to one another at the locations where they meet, so that a uniform design results in transmitted light.

Fig. 10 zeigt ein weiteres Ausführungsbeispiel eines Datenträgers mit einer durch Laserbeaufschlagung erzeugten Kennzeichnung 114. Ähnlich wie bei dem Ausführungsbeispiel der Fig. 9 ist auf einem Papiersubstrat 110 einer Banknote ein Sicherheitselement-Patch mit einer Metallschicht 112 aufgebracht. Die Kennzeichnung 114 stellt in diesem Ausführungsbeispiel ein Sternmotiv dar, das in einem ersten Kennzeichnungsteil durch eine lasergeschnittene Öffnung 116 in dem Papiersubstrat 110 gebildet ist. In einem zweiten Kennzeichnungsteil ist die Kennzeichnung 114 durch eine Vielzahl von Demetallisationslinien 118 in der Metallschicht 112 gebildet, in denen das visuelle Erscheinungsbild des Sicherheitselement-Patches modifiziert ist. Das Schneiden der Öffnung 116 und die Erzeugung der Demetallisationslinien 118 findet im selben Arbeitsgang durch denselben Laserstrahl statt, so dass der Modifikationsbereich mit den Demetallisationslinien 118 perfekt zu der Öffnung 116 gepassert ist. Im Durchlicht ergänzen die fünfeckigen Abschlusselemente 118 hell leuchtend den bereits im Auflicht hell erscheinenden Innenteil 116 zu dem vollständigen Sternmotiv 116,118. Fig. 10 shows a further embodiment of a data carrier with a generated by laser irradiation labeling 114. Similar to the embodiment of the Fig. 9 For example, a security element patch with a metal layer 112 is applied to a paper substrate 110 of a banknote. The mark 114 in this exemplary embodiment represents a star motif that is formed in a first identification part by a laser-cut opening 116 in the paper substrate 110. In a second identification part, the label 114 is formed by a plurality of demetallization lines 118 in the metal layer 112 in which the visual appearance of the security element patch is modified. The cutting of the opening 116 and the generation of the demetallization lines 118 take place in the same operation by the same laser beam, so that the modification area with the demetallization lines 118 is perfectly matched to the opening 116. In transmitted light, the pentagonal end elements 118 brightly illuminate the inner part 116, which already appears bright in reflected light, to form the complete star motif 116, 118.

In einer weiteren Gestaltung enthält der Datenträger wiederum ein Sicherheitselement, wie etwa den in ein Banknotenpapier 120 eingebetteten Fenstersicherheitsfaden 122 der Fig. 11. Dann wird durch Laserbeaufschlagung in dem Banknotenpapier 120 ein gerastertes Laserloch 124 aus einer Vielzahl paralleler Schnittlinien 126 erzeugt, das den Fenstersicherheitsfaden 122 überlappt. Die Laserparameter werden dabei so gewählt, dass die Laserstrahlung neben dem Banknotenpapier 120 auch die Trägerfolie des Sicherheitsfadens 122 durchtrennt. Anschließend wird zumindest der geschnittene Bereich mit einer oder beiden Seiten jeweils mit einer weiteren Folie abgedeckt. Eine solche Kombination lässt sich mit besonderem Vorteil bei Folienverbundbanknoten einsetzen, insbesondere bei Folienverbundbanknoten mit einem Schichtaufbau Folie/Papier/Folie, da die beiden äußeren Folien dann nicht nur das Sicherheitselement 122 vor Manipulation schützen und eine Verschmutzung verhindern können, sondern da eine solche Gestaltung auch erlaubt, Fälschungsangriffe durch Spalten der Verbundbanknote offensichtlich zu machen, wie weiter unten genauer beschrieben.In a further embodiment, the data carrier in turn contains a security element, such as the window security thread 122 embedded in a banknote paper 120 Fig. 11 , Then, by laser application in the banknote paper 120, a rastered laser hole 124 of a plurality of parallel cut lines 126 is created which overlaps the window security thread 122. The laser parameters are chosen so that the laser radiation in addition to the banknote paper 120 also cuts through the carrier film of the security thread 122. Subsequently, at least the cut region is covered with one or both sides each with a further film. Such a combination can be used with particular advantage in laminated film banknotes, especially in composite film banknotes with a layer structure film / paper / foil, since the two outer films then not only protect the security element 122 from manipulation and prevent contamination, but there such a design as well allows to make forgery attacks by splitting the composite banknote, as described in more detail below.

Wird anstelle eines Papiersubstrats 120 ein Kunststoffsubstrat eingesetzt, kann die beschriebene Gestaltung auch in Folienverbundbanknoten mit einem Schichtaufbau Folie/Folie/Folie eingesetzt werden.If a plastic substrate is used instead of a paper substrate 120, the described design can also be used in composite film banknotes with a layer structure film / film / film.

Fig. 12 zeigt eine weitere Gestaltung eines Datenträgers, mit der ein Fenstersicherheitsfaden simuliert wird. Dazu wurde auf das Banknotenpapier 130 einer Banknote zunächst ein durchgehender Sicherheitsfaden 132 aufgebracht, der mit einer Metallschicht mit einer Negativschrift 134 versehen ist. Im Bereich des Sicherheitsfadens 132 wurden dann durch Einwirkung von Laserstrahlung mehrere identische Öffnungen 136 in den Datenträger geschnitten, wobei die Laserparameter so gewählt werden, dass die Laserstrahlung sowohl das Banknotenpapier 130 als auch den Sicherheitsfaden 132 durchschneidet. Durch die Kombination des aufgebrachten Sicherheitsfadens 132 und der Öffnungen 136 entsteht für den Betrachter so der visuelle Eindruck eines Fenstersicherheitsfadens. Fig. 12 shows a further design of a data carrier with which a window security thread is simulated. For this purpose, a continuous security thread 132 was first applied to the banknote paper 130 of a banknote, which was provided with a metal layer with a negative writing 134. In the area of the security thread 132, several identical openings 136 were then cut into the data carrier by the action of laser radiation, the laser parameters being selected so that the laser radiation cuts through both the banknote paper 130 and the security thread 132. The combination of the applied security thread 132 and the openings 136 thus creates for the viewer the visual impression of a window security thread.

Die Erfindung kann mit besonderem Vorteil bei Folienverbundbanknoten eingesetzt werden, bei denen die äußeren Folienschichten zugleich der Abdeckung der durch die Laserstrahlung erzeugten Öffnungen dienen. Dies ist in allgemeiner Form in Fig. 13 illustriert. Die erfindungsgemäße Folienverbundbanknote 140 weist ein Substrat 142 aus Papier oder Folie auf, das mit einem Sicherheitselement 144 verbunden ist. In diese Kombination aus Substrat und Sicherheitselement wurde dann durch Einwirkung von Laserstrahlung eine Kennzeichnung 150 eingebracht, die einen im Durchlicht gegenüber Auflicht veränderten visuellen Eindruck aufweist. Ein erster Kennzeichnungsteil ist dabei durch zumindest eine Öffnung 152 in dem Substrat 142 gebildet, während ein zweiter Kennzeichnungsteil in dem Sicherheitselement 144 durch einen Modifikationsbereich 154 gebildet ist, in dem das visuelle Erscheinungsbild des Sicherheitselements 144 durch die Einwirkung der Laserstrahlung modifiziert ist.The invention can be used with particular advantage in laminated film banknotes, in which the outer film layers also serve to cover the openings produced by the laser radiation. This is in general form in Fig. 13 illustrated. The composite film banknote 140 according to the invention has a substrate 142 made of paper or foil, which is connected to a security element 144. In this combination of substrate and security element was then introduced by the action of laser radiation, a label 150, which has a changed in transmitted light compared to incident light visual impression. A first identification part is formed by at least one opening 152 in the substrate 142, while a second identification part is formed in the security element 144 by a modification region 154, in which the visual appearance of the security element 144 is modified by the action of the laser radiation.

Da die Modifikation des Sicherheitselements 144 typischerweise einen geringeren Energieeintrag erfordert als das Schneiden des Substrats 142, wird in der Regel die Laserenergie oder Laserleistung beim Führen des Laserstrahls am Übergang vom Schneidbereich 152 in den Modifikationsbereich 154 erniedrigt und umgekehrt beim Übergang vom Modifikationsbereich 154 in den Schneidbereich 152 wieder erhöht. Dadurch wird sichergestellt, dass die beiden Kennzeichnungsteile trotz ihres unterschiedlichen Charakters in perfektem Passer zueinander stehen.Since the modification of the security element 144 typically requires less energy input than cutting the substrate 142, the laser energy or laser power is typically lowered when passing the laser beam at the transition from the cutting region 152 to the modification region 154, and vice versa during the transition from the modification region 154 to the cutting region 152 increased again. This ensures that the two marking parts, despite their different character, are in perfect register with each other.

Schließlich werden das geschnittene Substrat 142 und das modifizierte Sicherheitselement 144 zwischen zwei Folien 156 eingebettet, um die gewünschte Folienverbundbanknote 140 zu bilden.Finally, the cut substrate 142 and the modified security element 144 are sandwiched between two films 156 to form the desired composite film banknote 140.

Die beiden äußeren Folien 156 können das Sicherheitselement nicht nur vor Manipulation und Verschmutzung schützen, sondern durch den Laserschnitt kann auch ein zusätzliches Sicherheitsmerkmal gebildet werden, das Fälschungsangriffe durch Spalten der Folienverbundbanknote offensichtlich macht ("tamper evident"). Wird nämlich eine Folie des Verbunds durch den Laser durchtrennt und das Substrat relativ tief angeritzt oder sogar ganz durchtrerint, so spaltet die Folienverbundbanknote unsymmetrisch. Der Laserschnitt muss dazu eine geschlossene Kontur bilden. Auf der Notenseite, die nicht vom Laser durchtrennt wurde, bleibt die Kontur dann erhalten, während in der anderen Notenseite ein entsprechendes Loch entsteht. Wird der Laserschnitt im Bereich eines weiteren Echtheitsmerkmals eingebracht, wird auch dieses Merkmal beim Spalten zerstört. Ein Manipulationsversuch wird somit offensichtlich.The two outer films 156 can protect the security element not only against manipulation and contamination, but by the laser cut can also be formed an additional security feature that makes counterfeiting attacks by splitting the composite film banknote obvious ("tamper evident"). Namely, if a film of the composite is severed by the laser and the substrate scratched relatively deep or even durchtrerint completely, so splits the composite film banknote unbalanced. The laser cut must form a closed contour. On the note page, which was not cut by the laser, the contour is then retained, while in the other note page a corresponding hole is created. If the laser cut is introduced in the area of another authenticity feature, this feature is also destroyed during splitting. A manipulation attempt becomes obvious.

Bei den erfindungsgemäßen Gestaltungen müssen die Schnittlinien 162 bzw. die Modifikationslinien 172 der gerasterten Laserlöcher 160 nicht zwingend gerade und parallel sein, wie der Einfachheit halber in den bisherigen Ausführungsbeispielen angenommen und in Fig. 14(a) nochmals gezeigt. Vielmehr können die gerasterten Laserlöcher 160 beispielsweise auch gerade und divergierende Schnittlinien 164 bzw. Modifikationslinien 174 enthalten, wie in Fig. 14(b) gezeigt, oder gekrümmte, äquidistante Schnittlinien 166 bzw. Modifikationslinien 176, wie in Fig. 14(c) dargestellt oder auch gekrümmte, divergierende Schnittlinien 168 bzw. Modifikationslinien 178, wie in Fig. 14(d) gezeigt.In the designs according to the invention, the cutting lines 162 and the modification lines 172 of the rastered laser holes 160 need not necessarily be straight and parallel, as assumed for simplicity in the previous embodiments and in Fig. 14 (a) shown again. Rather, the screened laser holes 160 may also include, for example, straight and divergent cut lines 164 and modification lines 174, respectively, as in FIG Fig. 14 (b) or curved, equidistant cut lines 166 and modification lines 176, respectively, as shown in FIG Fig. 14 (c) or curved, divergent cut lines 168 or modification lines 178, as shown in FIG Fig. 14 (d) shown.

Beim Laserschneiden können sich die Breiten der Schnittlinien im Substrat und der Modifikationslinien im Sicherheitselement aufgrund der in der Regel gaußförmigen Energieverteilung des Laserstrahls voneinander unterscheiden. Auch können die Schnittlinien aller Ausführungsbeispiele mit einem lasermodifizierten Randbereich versehen sein, wie weiter oben allgemein beschrieben.In laser cutting, the widths of the cut lines in the substrate and the modification lines in the security element may differ from each other due to the generally Gaussian energy distribution of the laser beam. Also, the cutting lines of all embodiments can be provided with a laser-modified edge region, as generally described above.

Die mit Bezug auf Hologrammstreifen oder Patches beschriebenen Effekte können selbstverständlich auch bei beliebigen anderen Sicherheitselementen eingesetzt werden, beispielsweise im Fenster eines Fensterfadens. Es versteht sich, dass die gezeigten Ausgestaltungen beliebig miteinander kombiniert werden können. So können etwa die divergierenden und/oder gekrümmten Schnittlinien der Figuren 14(a) bis (d) mit allen beschriebenen Sicherheitselementen kombiniert werden.Of course, the effects described with respect to hologram strips or patches can also be used with any other security elements, for example in the window of a window thread. It is understood that the embodiments shown can be combined with each other as desired. For example, the diverging and / or curved cutting lines of the FIGS. 14 (a) to (d) combined with all described safety elements.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Banknotebill
1212
BanknotenpapierBanknote paper
1414
Hologrammstreifenhologram strip
1616
Portraitportrait
1818
Wertzahlvalue number
2020
PrägelackschichtEmbossing lacquer layer
2222
Hologrammstrukturhologram structure
2424
HologrammmetallisierungHologrammmetallisierung
3030
KennzeichnungLabelling
3232
gerastertes LaserlochRasterized laser hole
3434
Schnittliniencut lines
3636
Ahornblattmaple leaf
3838
quadratischer Rahmensquare frame
4040
Modifikationsbereichmodification area
4242
DemetallisierungslinienDemetallisierungslinien
4444
Betrachterobserver
4646
reflektiertes Lichtreflected light
5050
Folienfilms
6060
Designdesign
6262
Wertzahlvalue number
6464
elliptischer Rahmenelliptical frame
7070
herausragender Teil des gerasterten Laserlochsoutstanding part of the screened laser hole
7272
überdeckter Teil des gerasterten LaserlochsCovered part of the screened laser hole
8080
Datenträgerdisk
8282
Papiersubstratpaper substrate
8484
Metallschichtmetal layer
8585
Modifikationsbereichmodification area
8686
durchgehende Öffnungthrough opening
8888
DemetallisationslinienDemetallisationslinien
9090
Dünnstellenthin places
100100
Papiersubstratpaper substrate
102102
Metallschichtmetal layer
104104
KennzeichnungLabelling
106106
Öffnungopening
108108
DemetallisationslinienDemetallisationslinien
110110
Papiersubstratpaper substrate
112112
Metallschichtmetal layer
114114
KennzeichnungLabelling
116116
Öffnungopening
118118
DemetallisationslinienDemetallisationslinien
120120
BanknotenpapierBanknote paper
122122
FenstersicherheitsfadenWindowed security thread
124124
gerastertes LaserlochRasterized laser hole
126126
Schnittliniencut lines
130130
BanknotenpapierBanknote paper
132132
Sicherheitsfadensecurity thread
134134
Negativschriftnegative writing
136136
Öffnungopening
140140
FolienverbundbanknoteFoil composite banknote
142142
Substratsubstratum
144144
Sicherheitselementsecurity element
150150
KennzeichnungLabelling
152152
Öffnungopening
154154
Modifikationsbereichmodification area
156156
Folienfilms
160160
gerastertes LaserlochRasterized laser hole
162 - 168162-168
Schnittliniencut lines
172 - 178172 - 178
Modifikationslinienmodification lines

Claims (14)

  1. A data carrier, especially a value document, such as a banknote, identification card and the like, having a substrate and a security element joined to the substrate, the data carrier including a marking, produced by the action of laser radiation, that exhibits a visual impression that is changed in transmitted light compared with reflected light,
    characterized in that the marking
    - is formed having a first marking part by at least one opening in the substrate, produced by the action of laser radiation, and
    - is formed having a second marking part by, in the security element, a modification region in which the visual appearance of the security element is modified by the action of the laser radiation, and
    - the modification region of the second marking part being in register with the opening of the first marking part, and
    - that the first marking part is completely covered by the security element, or that the first marking part is partially covered by the security element and partially arranged immediately adjacent to the security element.
  2. The data carrier according to claim 1, characterized in that the first marking part exhibits a plurality of straight, parallel or diverging cutting lines in the substrate and/or in that the second marking part exhibits a plurality of straight, parallel or diverging modification lines in the security element.
  3. The data carrier according to claim 1 or 2, characterized in that the first marking part exhibits a plurality of curved, equidistant or diverging cutting lines in the substrate and/ or in that the second marking part exhibits a plurality of curved, equidistant or diverging modification lines in the security element.
  4. The data carrier according to claim 2 or 3, characterized in that the cutting lines and the modification lines at least partially interconnect without offset.
  5. The data carrier according to at least one of claims 1 to 4, characterized in that the modification region is formed by a material ablation of the security element, especially by a local demetalization of a metal layer or by a local ablation of an ink layer.
  6. The data carrier according to at least one of claims 1 to 4, characterized in that the modification region is formed by an irreversible change in the optical properties of the security element, especially by a local change in the visible color or the transparency of the security element.
  7. The data carrier according to at least one of claims 1 to 6, characterized in that the first and second marking part constitute pieces of information that are related to or that complement each other.
  8. The data carrier according to at least one of claims 1 to 7, characterized in that the substrate is provided at least in a sub-region with a laser-modifiable marking substance, and in that, in this sub-region, the at least one opening of the first marking part exhibits an edge region that is modified by the action of laser radiation, wherein, preferably, in the sub-region, the substrate is provided with a marking substance whose visible color is changeable by the action of laser radiation, and in that, in this sub-region, the at least one opening of the first marking part exhibits a colored edge region.
  9. The data carrier according to at least one of claims 1 to 8, characterized in that the substrate is formed from paper or a foil, and/or that the data carrier is a paper-foil composite or a foil composite, in which the substrate and the security element are embedded between two foil plies.
  10. The data carrier according to at least one of claims 1 to 9, characterized in that the security element is a security thread, a label or a transfer element, and/or that the modification region of the security element is developed in a metal layer, preferably in a hologram metalization, in the absorber or reflector layer of a color-shifting thin-film element, in a metallic matte pattern, or in a metallic coating of a micropattern.
  11. A method for manufacturing a data carrier according to one of claims 1 to 10, in which
    - a substrate is provided that is joined to a security element, and
    - the data carrier is provided, by the action of laser radiation, with a marking that exhibits a visual impression that is changed in transmitted light compared with reflected light,
    characterized in that
    - by the action of the laser radiation, a first marking part having at least one opening is formed in the substrate, and
    - in the same operation is formed by a modification region in the security element, in register with the opening of the first marking part, a second marking part in which the visual appearance of the security element is modified by the action of the laser radiation.
  12. The method according to claim 11, characterized in that the first and second marking part are produced by laser impingement with an infrared laser, preferably with a CO2 laser.
  13. The method according to claim 11 or 12, characterized in that the substrate is provided at least in a sub-region with a laser-modifiable marking substance, such that, in this sub-region, the at least one opening of the first marking part is modified in its edge region by the action of the laser radiation, preferably in that the security paper is provided in the sub-region with a marking substance whose visible color is changeable by the action of the laser radiation, and in that, in this sub-region, the at least one opening of the first marking part is provided with a colored edge region by the action of the laser radiation.
  14. The method according to at least one of claims 11 to 13, characterized in that the substrate that is provided with at least one opening is embedded with the modified security element between two foils to form a foil composite structure.
EP11788058.3A 2010-12-01 2011-11-24 Data carrier having an identification mark Active EP2646256B1 (en)

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DE102009011424A1 (en) 2008-12-22 2010-07-01 Giesecke & Devrient Gmbh Disk with transparency

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ES2570660T3 (en) 2016-05-19
EP2646256A1 (en) 2013-10-09
RU2013129708A (en) 2015-01-10
PL2646256T3 (en) 2016-08-31
DE102010053052A1 (en) 2012-06-06
WO2012072214A1 (en) 2012-06-07
CN103338942A (en) 2013-10-02
CN103338942B (en) 2016-08-24

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