EP2379339B1 - Data carrier with transparent area - Google Patents

Data carrier with transparent area Download PDF

Info

Publication number
EP2379339B1
EP2379339B1 EP09799020.4A EP09799020A EP2379339B1 EP 2379339 B1 EP2379339 B1 EP 2379339B1 EP 09799020 A EP09799020 A EP 09799020A EP 2379339 B1 EP2379339 B1 EP 2379339B1
Authority
EP
European Patent Office
Prior art keywords
region
marking
motif
cutting lines
cutting
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
EP09799020.4A
Other languages
German (de)
French (fr)
Other versions
EP2379339A1 (en
Inventor
André Gregarek
Ralf Liebler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giesecke and Devrient Currency Technology GmbH
Original Assignee
Giesecke and Devrient Currency Technology GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Giesecke and Devrient Currency Technology GmbH filed Critical Giesecke and Devrient Currency Technology GmbH
Publication of EP2379339A1 publication Critical patent/EP2379339A1/en
Application granted granted Critical
Publication of EP2379339B1 publication Critical patent/EP2379339B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/21Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose for multiple purposes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29Securities; Bank notes
    • B42D2035/16
    • B42D2035/24
    • B42D2035/36
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/405Marking
    • B42D25/41Marking using electromagnetic radiation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/405Marking
    • B42D25/43Marking by removal of material

Definitions

  • the invention relates to a data carrier, in particular a document of value such as a bank note, identity card and the like, with a see-through area and a method for producing such a data carrier.
  • Data carriers such as security documents, documents of value or identity documents, but also other valuables are often equipped with security features for protection that allow the authenticity of the data carrier to be checked and at the same time serve as protection against unauthorized reproduction.
  • see-through security features such as see-through windows in banknotes, are becoming increasingly attractive.
  • a film provided with an adhesive layer on one side is applied to a bank note in order to close a previously created through opening of the bank note.
  • the present invention is based on the object of further improving data carriers of the type mentioned at the beginning with regard to their security against imitation and their visual appearance.
  • a generic data carrier in particular a document of value such as a bank note, identity card and the like, contains a carrier in which a see-through area is formed by a grid of a plurality of parallel cutting lines.
  • a motif area with a reflected light and / or transmitted-light changed visual impression arranged, which is in the form of a pattern, characters or coding.
  • the motif area is formed by a line grid of a plurality of parallel cutting lines, so that the cutting lines of the motif area form first cutting lines and the cutting lines of the see-through area lying outside the motif area form second cutting lines, the first and second cutting lines adjoining each other and having different cutting widths. Due to the different cutting widths of the first and second cutting lines and the resulting different surface coverage of the carrier, the motif area within the surrounding see-through area can be visually recognized in transmitted light and / or incident light.
  • the width of the first cutting lines can be either larger or smaller than the width of the second cutting lines.
  • the wider cutting lines are in particular at least 10%, at least 20%, at least 50% or even more than 100% wider than the narrower cutting lines.
  • the cutting width of the first and second cutting lines is in each case essentially constant in advantageous configurations. The phrase “essentially constant” takes into account the fact that the cutting width in laser cutting can vary slightly in practice, even with the same settings, and therefore cannot be completely constant.
  • the carrier is provided with a laser-modifiable marking substance in the see-through area and at least the cutting lines of the see-through area outside the motif area have an edge area modified by the action of laser radiation. If intersection lines are also present within the motif area, then these also advantageously have one as a result of the action edge area modified by laser radiation.
  • the motif area is uncut, in particular only provided with marking lines or marking contours, as explained further below.
  • the carrier can in particular be provided with a marking substance, the visible color of which can be changed by the action of the laser radiation.
  • the cut lines of the see-through area lying outside the motif area and possibly also the cut lines present within the motif area then have a colored edge area.
  • the carrier can 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 cut lines of the see-through area lying outside the motif area and possibly also the cut lines present within the motif area then have an edge area with infrared-absorbing, magnetic, electrical or luminescent properties that are different from their surroundings. Such designs allow a simple additional machine authenticity check of the see-through area.
  • Laser-modifiable effect pigments can advantageously be used as the marking substance.
  • Such effect pigments are available to the person skilled in the art with different properties, in particular with regard to their body color, the color change under the action of a laser, the threshold energy and the required laser wavelength.
  • Effect pigments, too which when irradiated with a laser do not (only) change their visible color, but also their infrared-absorbing, magnetic, electrical or luminescent properties change are known to the person skilled in the art.
  • the modification of the effect pigments can take place with laser radiation in the ultraviolet, visible or infrared spectral range, for example with a CO 2 laser with a wavelength of 10.6 ⁇ m.
  • a pigment-free, laser-modifiable marking substance is used.
  • Pigment-free marking substances can also be applied to the carrier or introduced into the carrier volume, for example as an engraving or printing ink.
  • a coating of high transparency can be produced with pigment-free marking substances, into which a permanent and high-contrast marking can be made by laser action at high speed.
  • Pigment-free marking substances can be modified by laser radiation in the ultraviolet, visible or infrared spectral range, for example with the 10.6 ⁇ m radiation of a CO 2 laser.
  • Specific, non-limiting examples of pigment-free laser-modifiable marking substances are given in the publications WO 02/101462 A1 , U.S. 4,343,885 and EP 0290 750 B1 specified. Marking substances that can be modified with a CO2 cutting laser can in particular also be those in the publication EP 1648 969 B1 specified laser-markable compositions are used.
  • the motif area is formed by an uncut area of the carrier.
  • the motif area can then be easily recognized as an uncut part of the carrier against the background of the screened see-through area, especially in transmitted light.
  • the motif area is formed by an uncut area of the carrier with a marking line grid made up of a plurality of parallel marking lines which adjoin the cutting lines outside the motif area.
  • the motif area can be easily recognized as an uncut part of the carrier in transmitted light and clearly visible through the marking lines also in plan view.
  • the carrier is preferably provided with a marking substance, the visible color of which can be changed by the action of the laser radiation, so that the marking lines of the motif area are colored.
  • the carrier can also be provided with a marking substance whose infrared-absorbing, magnetic, electrical or luminescent properties can be changed by the action of the laser radiation, so that the marking lines of the motif area are infrared-absorbing, magnetic, electrical or infrared-absorbing, magnetic, electrical or changed in relation to their surroundings have luminescent properties.
  • the substances mentioned above can also be used here as marking substances.
  • the motif area is formed by an uncut area of the carrier with several nested marking contours of decreasing size.
  • the marking contours expediently simulate the shape of the motif area, with the increasing reduction in size no longer having to show all the details of the outer contour of the motif area. Even with such a design, the motif area with the marking motif shown is clearly recognizable in incident light.
  • the carrier can also be provided with a marking substance in this variant, its visible The color and / or its infrared-absorbing, magnetic, electrical or luminescent properties can be changed by the action of the laser radiation, so that the marking contours have correspondingly changed properties.
  • a continuous motif opening in the form of a pattern, characters or coding can be arranged within the motif area.
  • the shape of the motif opening is related to the shape of the motif area.
  • Such a context of meaning can in particular consist in the fact that the motif opening represents the same motif as the motif area, it being possible for the spatial position and / or the size of the two motifs shown to differ.
  • the context of meaning can also consist in the fact that the first and second depicted motif each only form parts of the motif that complement each other to form an overall motif, or in that the first and second depicted motif complement each other to form a coherent overall picture.
  • the see-through area itself can also be designed in all designs in the form of a pattern, characters or a code, wherein the shape of the see-through area can be related to the shape of the motif area and / or a possibly existing motif opening.
  • the shapes of the see-through area, motif area and motif opening can, however, also be selected independently of one another and each represent independent motifs.
  • the see-through area in addition to the line grid made up of parallel cutting lines, also has a marking line grid made up of a plurality of parallel marking lines.
  • the cutting lines and the marking lines can be parallel or any Include angles.
  • the motif area is advantageously formed by an uncut area of the carrier with two marking line grids each consisting of a plurality of parallel marking lines, the marking lines of one marking line grid connecting to the cutting lines outside the motif area and the marking lines of the other marking line grid connecting to the marking lines outside the motif area connect.
  • the outline of the motif area is provided with a marking contour, in particular a colored marking contour, in order to increase the visibility of the motif area in incident light.
  • the cutting lines are preferably designed with a width between 0.05 mm and 1 mm, in particular between 0.1 mm and 0.4 mm and with a distance (center-center) between 0.05 mm and 1 mm.
  • the width of the cutting line is preferably between 0.10 and 0.35 mm.
  • the transparent area of the data carrier is advantageously reinforced by a film element.
  • the film element can be shaped as a patch or as a strip. Alternatively, the film element can also cover the entire surface of the data carrier.
  • the film element can be laminated or coextruded onto the carrier, either only on one surface of the carrier or on both surfaces, ie front and / or rear.
  • the film element can in particular contain a line raster that generates a moire effect with the line raster of the see-through area, in particular by having the period of the line raster of the film element slightly different from the period of the line grid of the see-through area deviates and / or the two line grids are rotated against each other.
  • the film element is matted.
  • the matting means that the visual impression of the motif area arranged in the see-through area changes more strongly in incident light and / or transmitted light than without matting.
  • the subject area is very good in transmitted light, and almost invisible in incident light.
  • the matting of the film can be achieved by applying a matting coating.
  • the coating is preferably a pressure-receiving layer.
  • the print receiving layer usually comprises a binder and silica gel as main components. The proportion of silica gel depends on the desired thickness of the matting. The more silica gel there is, the more matt the layer becomes.
  • the film element itself can also be matt.
  • the film element itself can also be matt.
  • PET polyethylene terephthalate
  • PP polypropylene
  • the film element is provided with a metallic layer at least in the area of the motif area arranged in the see-through area.
  • the metallic layer is preferably vapor deposited.
  • the thickness of the metallic layer is such that it appears opaque to an observer in incident light and at least partially transparent in transmitted light. In incident light, the viewer cannot see the motif area covered by the metallic layer, but very well in transmitted light. In the case of a metallic aspect of aluminum, the thickness is preferably between 30 nm and 40 nm.
  • the data carrier can in particular be a security element, a security paper or a value document.
  • the invention also includes a method for producing a data carrier of the above-mentioned type.
  • a see-through area is formed in the carrier by laser cutting a line grid of a plurality of parallel cutting lines, wherein within the see-through area a motif area with a reflected light and / or Transmitted light changed visual impression is generated, which is formed in the form of a pattern, characters or coding.
  • the motif area of the data carrier is preferably formed by a line grid of first parallel cutting lines, which are generated by the same cutting laser beam as the second cutting lines of the see-through area lying outside the motif area.
  • the first and second cutting lines are generated by varying the laser parameters, in particular the laser power and / or the cutting speed, with different cutting widths.
  • the carrier is provided with a laser-modifiable marking substance in the see-through area before the laser cutting, so that the cutting lines lying outside the motif area are modified in their edge area by the action of the laser radiation. If there are cutting lines within the motif area, then these are also advantageously modified by the action of the laser radiation in their edge area.
  • the surface of the carrier is coated with the marking substance, for example by a printing process.
  • the marking substance is introduced into the volume of the carrier.
  • the carrier material If the carrier is made of paper, the marking substance can advantageously be added to the paper pulp during sheet formation. Another advantageous possibility is to introduce the marking substance into the volume of the paper substrate in an immersion bath or to impregnate the paper substrate with the marking substance in a size press. If the carrier is formed from a plastic film, the marking substance can also be introduced into the volume of the film during the production of the film or subsequently by means of an impregnation step.
  • the motif area is formed by an uncut area of the carrier.
  • the motif area can be formed by an uncut area of the carrier with a marking line grid with parallel marking lines that are generated by the same laser beam as the cut lines of the see-through area lying outside the motif area.
  • the cutting lines lying outside the motif area and the marking lines of the motif area are generated by varying the laser parameters, in particular the laser power and / or the cutting speed.
  • the motif area is formed by an uncut area of the carrier with several nested marking patterns of decreasing size.
  • the paper webs are in any case so stable that they hold up to a film application of the see-through area. After the film has been applied to the see-through area, the paper webs are stabilized by the film.
  • the see-through areas according to the invention are therefore particularly suitable for security elements or documents of value with foil elements or a foil composite document. In some cases, the paper webs are so stable that they can be used without a stabilizing film.
  • FIGS. 1 and 2 show a schematic representation of a bank note 10, the one in Fig. 2 has see-through area 12 according to the invention shown in more detail.
  • the see-through area 12 on the bank note 10 can be reinforced with a transparent film element (not shown).
  • the see-through area 12 is formed by a line grid of a plurality of parallel cutting lines 22 which have been cut into the bank note paper 20 by the action of laser radiation.
  • the line grid of the cutting lines 22 has a period length of 0.5 mm with a cutting width of the cutting lines 22 of 0.15 mm, so that the area coverage of the line grid is 30%.
  • the see-through area can therefore be seen both from above and through.
  • the see-through area 12 is in the form of a geometric pattern, for example that in FIG Fig. 2 formed oval.
  • the outline of the see-through area is indicated in the figure by the outline 24 drawn in dashed lines and is only used to graphically illustrate the shape formed.
  • a motif area 30 is arranged within the see-through area 12, which, compared to the surrounding see-through area 12, has a changed visual impression in incident light and / or transmitted light and is thus recognizable for the viewer.
  • the motif area 30 is generally designed in the form of a pattern, characters or coding and, in the exemplary embodiment, has the shape of a maple leaf.
  • the outline 34 of the motif area 30 drawn in dashed lines also serves merely to illustrate the shape of the motif area 30 in the drawing and corresponds not necessarily an actually existing contour on the bank note.
  • the motif area 30 itself is also formed by a line grid of a plurality of parallel cutting lines 32, which are perfectly aligned with the cutting lines 22 of the see-through area 12 lying outside the motif area 30.
  • the cutting lines 32 of the motif area 30 are, however, formed with a cutting width of 0.3 mm and thus much wider than the cutting lines 22 present outside the motif area.
  • the light conditions and the background can be clearly seen in incident light and / or transmitted light. It goes without saying that numerical values other than those mentioned by way of example can also be considered for the period lengths and cutting widths.
  • the cutting width of the cutting lines 22 outside the motif area 30 can be between 0.10 mm and 0.20 mm and the cutting width of the cutting lines 22 within the motif area 30 can be between 0.25 mm and 0.35 mm .
  • the cutting widths can be increased or decreased accordingly.
  • the perfect registration of the cutting lines 22, 32 of different widths is ensured by the cutting lines 22, 32 being laser-cut with the same cutting laser beam can be generated in the same operation.
  • the different cutting widths are generated by varying the laser parameters, in particular the laser power and / or the cutting speed, during the cutting process.
  • FIG. 3 (a) the essentially Gaussian spatial distribution of the power W of a cutting laser beam is shown.
  • the energy input of the laser radiation into the paper exceeds the threshold energy required to cut the paper 20 in a wide cutting area 42 exceeded in a narrower cutting area 46, so that a smaller cutting width results.
  • the cutting width of the laser beam along the laser beam guide can be varied as desired by the practically instantaneous variation of the laser power.
  • Fig. 2 adjoining cutting lines 22, 32 can be generated in this way in one operation as continuous and thus perfectly matched cutting lines.
  • the laser power and thus the cutting width are increased and at the transition from the motif area 30 (cut lines 32) to the see-through area 12 (cut lines 22), the laser power and thus the Cutting width decreased again.
  • Fig. 3 (b) illustrates the change in the cutting width due to a change in the cutting speed with constant maximum laser power (distribution 50).
  • the laser radiation only acts on the paper for a relatively short time, so that the energy input into the paper is low. Accordingly, the threshold energy required for cutting the paper is exceeded only in a narrow cutting area 52 with high laser power.
  • the laser radiation acts longer on the paper, so that a higher energy input into the paper results.
  • a wider cutting area 54 results, in which the threshold energy required for cutting the paper is exceeded.
  • Adjoining cutting lines 22, 32 can therefore also be generated in one operation as continuous and therefore perfectly matched cutting lines by reducing the cutting speed at the transition from the transparent area 12 (cutting lines 22) to the motif area 30 (cutting lines 32) and thus increasing the cutting width and that at the transition from the motif area 30 (cutting lines 32) to the see-through area 12 (cutting lines 22) the cutting speed is increased again and the cutting width is thus reduced.
  • Fig. 4 shows a further exemplary embodiment of a see-through area 60 designed according to the invention, in which the parallel cutting lines 22 lying outside the motif area 64, as in FIG Fig. 2 , created by laser cutting.
  • the laser power of the cutting laser is lowered below the cutting threshold of the paper 20, so that no cutting lines were generated there.
  • the motif area 64 thus remains as an uncut piece of paper and can be clearly seen against the background of the rasterized see-through area 60, especially in transmitted light.
  • Fig. 5 are the see-through area 70 and the motif area 80, as in FIG Fig. 2 , each formed by a line grid of a plurality of parallel cutting lines 72 and 82, the cutting lines 72, 82 connecting to one another and the cutting width of the cutting lines 72 outside the motif area 80 smaller than the cutting width of the cutting lines 82 within the motif area 80 by suitable variation of the laser parameters is chosen.
  • both the cutting lines 72 and the cutting lines 82 are each surrounded on both sides by a perfectly matched colored border 74 and 84, as in the detail section of FIG Fig. 6 shown in more detail, which shows the transition from a cutting line 72 to a cutting line 82 at the edge 86 of the motif area 80.
  • the banknote paper 20 was provided with laser-modifiable effect pigments prior to laser cutting of a certain area surrounding the transparent area 70 to be created, which when exposed to laser radiation produce a desired color change, for example from colorless to red , demonstrate.
  • FIG Fig. 7 The principle of the simultaneous and perfectly matched generation of the cutting lines 72, 82 and the colored edges 74, 84 is shown in FIG Fig. 7 illustrated where again the spatial power or energy distribution 55 of the cutting laser beam is shown schematically.
  • the laser energy exceeds the threshold energy E 1 required for cutting the paper 20.
  • E 2 is in Fig. 7 denotes the reaction energy of the effect pigments which, when exceeded, results in the desired color change.
  • the marking area 58 the laser energy lies between the reaction energy E 2 required for the color change and the energy Ei required for cutting, so that a color change of the effect pigments is induced in the marking area 58 , but the carrier is not cut.
  • the bank note paper 20 provided with the laser-modifiable effect pigments is therefore produced by the laser beam 55 in a central region 72 or 82, which corresponds to the cutting region 56 of FIG Fig. 7 corresponds, cut and additionally colored in an edge area 74, 84 in perfect register with the cutting line 72 and 82, respectively.
  • the width of the colored edge area 74, 84 corresponds to the width of the marking area 58 and depends on the beam profile, the reaction energy of the effect pigments used and the material properties of the paper. Outside the cut area 56 and the marking area 58, the laser energy lies below the reaction threshold of the effect pigments, so that the paper is not changed there.
  • the laser-modifiable effect pigments can be applied to the banknote paper 20, for example printed on, or can be introduced into the volume of the banknote paper 20. This can already be done during paper production by admixing the effect pigments to the paper pulp during sheet formation or subsequently in one go Immersion bath or by impregnation in the size press. Curtain coating and painting processes can also be considered.
  • a pigment-free, laser-modifiable marking substance can also be used.
  • Such pigment-free marking substances can also be printed onto the respective carrier, for example as an engraving or printing ink, or incorporated into the volume of the carrier.
  • Non-pigmented, laser-modifiable coatings can have a very high level of transparency when they are not written on. By exposure to laser radiation, for example a CO 2 laser at 10.6 ⁇ m, permanent and high-contrast edge markings can be produced at high speed.
  • the outer contour 88 of the motif area 80 can be marked with the aid of the laser radiation, as in FIG Fig. 8 shown.
  • the laser parameters are set in such a way that the laser energy over the entire beam diameter is below the cutting threshold of the paper, but in an inner area is still above the reaction threshold of the effect pigments. This can be done, for example, by choosing a laser energy E between E 1 and E 2 in Fig. 7 or can be achieved by adjusting the cutting speed.
  • the color effect of the outer contour 88 can also be designed in such a way that the effect pigments or the pigment-free marking substance is removed in the middle of the line and the underlying layer or the paper surface is revealed.
  • Fig. 9 shows a further embodiment of a see-through area 90 according to the invention, in which the parallel cutting lines 92 lying outside of the motif area 100, as in FIG Fig. 5 , by laser cutting a banknote paper 20 provided with a marking substance together with a registered colored border 94.
  • the laser parameters of the cutting laser were varied during the transition into the motif area 100 so that the energy input into the paper is below the cutting threshold of the paper 20, but still above the reaction threshold of the marking substance. In this way, the laser beam no longer generates cutting lines with a colored border within the motif area 100, but only colored marking lines 102 which adjoin the cutting lines 92 and are perfectly matched to them.
  • a further area 110 is provided within the motif area 100, in which the marking lines 102 merge again into cut lines 92, 94 with colored edges.
  • the shape of the further area 110 can be related to the shape of the motif area 100 and, for example, represent the same motif as in FIG Fig. 11 shown as an example.
  • Such a design can also be viewed as a see-through area with an annular motif area 112.
  • the further embodiment of the Fig. 12 shows a see-through area 120 according to the invention, in which the parallel cutting lines 122 lying outside of the motif area 130, as in FIG Fig. 5 , by laser cutting of a bank note paper 20 provided with a marking substance with a registered colored border 124.
  • the cutting lines 122, 124 were interrupted so that the motif area 130 forms an uncut paper area within the see-through area 120.
  • the motif area 130 was lasered with a laser energy between the reaction threshold of the marking substance and the cutting threshold of the paper 20 with concentric marking contours 132 provided, the shape of which is modeled on the contour of the motif area.
  • the concentric marking contours do not necessarily represent exact, reduced copies of the outer contour of the motif area 130, but can, as in FIG Fig. 12 shown, with decreasing size expediently contain fewer and fewer details of the outer contour.
  • a continuous motif opening in the form of a pattern, characters or coding can also be provided within the motif area.
  • Fig. 13 shows an example of a modification of the embodiment of FIG Fig. 2 , in which a continuous motif opening 140, here also in the form of a maple leaf, is arranged within the motif area 30.
  • the shape of the motif opening 140 can in particular, as in FIG Fig. 13 , are related to the shape of the motif area 30 and / or the shape of the see-through area 12.
  • FIG. 9 An embodiment according to a development of the invention, which the at Fig. 9 is related to the design described is in Fig. 14 in supervision and in Fig. 15 Shown in a detail area at the transition from the motif area and the see-through area.
  • the embodiment of the Figures 14 and 15 contains a see-through area 150, which outside of the motif area 160 has both a cutting line grid of parallel cutting lines 152 with a colored border 154 and a marking line grid of parallel marking lines 156 which are parallel to the cutting lines 152 of the cutting line grid.
  • both the marking lines 156 and the cutting lines 152 merge in perfect register into pure marking lines 162, as already in FIG Fig. 9 explained.
  • the two types of lines 152, 156 of the see-through area are arranged alternately, but other sequences, for example of two cutting lines 152 and one marking line 156, are also conceivable. Since the marking line grid does not contain any cutting lines, it can also be arranged at any desired angle to the cutting line grid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Credit Cards Or The Like (AREA)
  • Laser Beam Processing (AREA)

Description

Die Erfindung betrifft einen Datenträger, insbesondere ein Wertdokument, wie eine Banknote, Ausweiskarte und dergleichen, mit einem Durchsichtsbereich sowie ein Verfahren zum Herstellen eines derartigen Datenträgers. 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 gewinnen zunehmend Durchsichtssicherheitsmerkmale, wie etwa Durchsichtsfenster in Banknoten, an Attraktivität. Zur Fenstererzeugung wird dabei beispielsweise eine auf einer Seite mit einer Kleberschicht versehene Folie auf eine Banknote aufgebracht, um eine zuvor erzeugte durchgehende Öffnung der Banknote zu verschließen. Weiterer Stand der Technik wird in der EP 1931523 A offenbart.The invention relates to a data carrier, in particular a document of value such as a bank note, identity card and the like, with a see-through area and a method for producing such a data carrier. Data carriers, such as security documents, documents of value or identity documents, but also other valuables are often equipped with security features for protection that allow the authenticity of the data carrier to be checked and at the same time serve as protection against unauthorized reproduction. In the process, see-through security features, such as see-through windows in banknotes, are becoming increasingly attractive. To create a window, for example, a film provided with an adhesive layer on one side is applied to a bank note in order to close a previously created through opening of the bank note. Further prior art is in the EP 1931523 A disclosed.

Davon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, Datenträger der eingangs genannten Art hinsichtlich ihrer Nachahmungssicherheit und ihres visuellen Erscheinungsbilds weiter zu verbessern.On this basis, the present invention is based on the object of further improving data carriers of the type mentioned at the beginning with regard to their security against imitation and their visual appearance.

Diese Aufgabe wird durch den Datenträger und das Herstellungsverfahren mit den Merkmalen der unabhängigen Ansprüche gelöst. Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by the data carrier and the production method with the features of the independent claims. Further developments of the invention are the subject of the subclaims.

Gemäß der Erfindung enthält ein gattungsgemäßer Datenträger, insbesondere ein Wertdokument, wie eine Banknote, Ausweiskarte und dergleichen, einen Träger, in dem durch ein Linienraster aus einer Mehrzahl paralleler Schnittlinien ein Durchsichtsbereich gebildet ist. Innerhalb des Durchsichtsbereichs ist erfindungsgemäß ein Motivbereich mit einem im Auflicht und/ oder Durchlicht veränderten visuellen Eindruck angeordnet, der in Form eines Musters, von Zeichen oder einer Codierung ausgebildet ist.According to the invention, a generic data carrier, in particular a document of value such as a bank note, identity card and the like, contains a carrier in which a see-through area is formed by a grid of a plurality of parallel cutting lines. According to the invention, a motif area with a reflected light and / or transmitted-light changed visual impression arranged, which is in the form of a pattern, characters or coding.

Der Motivbereich wird durch ein Linienraster aus einer Mehrzahl paralleler Schnittlinien gebildet, so dass die Schnittlinien des Motivbereichs erste Schnittlinien bilden und die außerhalb des Motivbereichs liegenden Schnittlinien des Durchsichtsbereichs zweite Schnittlinien bilden, wobei die ersten und zweiten Schnittlinien aneinander anschließen und unterschiedliche Schnittbreite aufweisen. Durch die unterschiedlichen Schnittbreiten der ersten und zweiten Schnittlinien und der resultierenden unterschiedlichen Flächendeckung des Trägers ist der Motivbereich innerhalb des umgebenden Durchsichtsbereichs im Durchlicht und/ oder Auflicht visuell erkennbar. Die Breite der ersten Schnittlinien kann dabei sowohl größer als auch kleiner als die Breite der zweiten Schnittlinien sein. Die breiteren Schnittlinien sind dabei insbesondere um mindestens 10%, mindestens 20%, mindestens 50% oder sogar um mehr als 100% breiter als die schmäleren Schnittlinien. Die Schnittbreite der ersten und zweiten Schnittlinien ist in vorteilhaften Gestaltungen jeweils im Wesentlichen konstant. Die Formulierung "im Wesentlichen konstant" trägt dabei der Tatsache Rechnung, dass die Schnittbreite beim Laserschneiden in der Praxis auch bei gleichen Einstellungen leicht variieren und daher nicht vollkommen konstant sein kann.The motif area is formed by a line grid of a plurality of parallel cutting lines, so that the cutting lines of the motif area form first cutting lines and the cutting lines of the see-through area lying outside the motif area form second cutting lines, the first and second cutting lines adjoining each other and having different cutting widths. Due to the different cutting widths of the first and second cutting lines and the resulting different surface coverage of the carrier, the motif area within the surrounding see-through area can be visually recognized in transmitted light and / or incident light. The width of the first cutting lines can be either larger or smaller than the width of the second cutting lines. The wider cutting lines are in particular at least 10%, at least 20%, at least 50% or even more than 100% wider than the narrower cutting lines. The cutting width of the first and second cutting lines is in each case essentially constant in advantageous configurations. The phrase “essentially constant” takes into account the fact that the cutting width in laser cutting can vary slightly in practice, even with the same settings, and therefore cannot be completely constant.

In vorteilhaften Gestaltungen der Erfindung ist der Träger im Durchsichtsbereich mit einem lasermodifizierbaren Markierungsstoff versehen und es weisen zumindest die außerhalb des Motivbereichs liegenden Schnittlinien des Durchsichtsbereichs einen durch Einwirkung von Laserstrahlung modifizierten Randbereich auf. Liegen innerhalb des Motivbereichs ebenfalls Schnittlinien vor, so weisen auch diese mit Vorteil einen durch die Einwirkung von Laserstrahlung modifizierten Randbereich auf. In anderen Gestaltungen ist der Motivbereich ungeschnitten, insbesondere lediglich mit Markierungslinien oder Markierungskonturen versehen, wie weiter unten ausgeführt.In advantageous embodiments of the invention, the carrier is provided with a laser-modifiable marking substance in the see-through area and at least the cutting lines of the see-through area outside the motif area have an edge area modified by the action of laser radiation. If intersection lines are also present within the motif area, then these also advantageously have one as a result of the action edge area modified by laser radiation. In other configurations, the motif area is uncut, in particular only provided with marking lines or marking contours, as explained further below.

Der Träger kann insbesondere mit einem Markierungsstoff versehen sein, dessen sichtbare Farbe durch die Einwirkung der Laserstrahlung veränderbar ist. Die außerhalb des Motivbereichs liegenden Schnittlinien des Durchsichtsbereichs und gegebenenfalls auch die innerhalb des Motivbereichs vorliegenden Schnittlinien weisen dann einen farbigen Randbereich auf.The carrier can in particular be provided with a marking substance, the visible color of which can be changed by the action of the laser radiation. The cut lines of the see-through area lying outside the motif area and possibly also the cut lines present within the motif area then have a colored edge area.

Alternativ oder zusätzlich kann der Träger mit einem Markierungsstoff versehen sein, dessen Infrarot-absorbierende, magnetische, elektrische oder lumineszierende Eigenschaften durch die Einwirkung der Laserstrahlung veränderbar sind. Die außerhalb des Motivbereichs liegenden Schnittlinien des Durchsichtsbereichs und gegebenenfalls auch die innerhalb des Motivbereichs vorliegenden Schnittlinien weisen dann einen Randbereich mit gegenüber ihrem Umfeld veränderten Infrarot-absorbierenden, magnetischen, elektrischen oder lumineszierenden Eigenschaften auf. Derartige Gestaltungen gestatten eine einfache ergänzende maschinelle Echtheitsprüfung des Durchsichtsbereichs.Alternatively or additionally, the carrier can 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 cut lines of the see-through area lying outside the motif area and possibly also the cut lines present within the motif area then have an edge area with infrared-absorbing, magnetic, electrical or luminescent properties that are different from their surroundings. Such designs allow a simple additional machine authenticity check of the see-through area.

Als Markierungsstoff können vorteilhaft lasermodifizierbare Effektpigmente eingesetzt werden. Solche Effektpigmente stehen dem Fachmann mit unterschiedlichen Eigenschaften, insbesondere bezüglich ihrer Körperfarbe, dem Farbumschlag unter Lasereinwirkung, der Schwellenergie und der benötigten Laserwellenlänge zur Verfügung. Auch Effektpigmente, die bei Laserbestrahlung nicht (nur) ihre sichtbare Farbe, sondern ihre Infrarot-absorbierenden, magnetischen, elektrischen oder lumineszierenden Eigenschaften verändern, sind dem Fachmann bekannt. Die Modifikation der Effektpigmente kann mit Laserstrahlung im ultravioletten, sichtbaren oder infraroten Spektralbereich beispielsweise mit einem CO2-Laser einer Wellenlänge von 10,6 µm erfolgen.Laser-modifiable effect pigments can advantageously be used as the marking substance. Such effect pigments are available to the person skilled in the art with different properties, in particular with regard to their body color, the color change under the action of a laser, the threshold energy and the required laser wavelength. Effect pigments, too, which when irradiated with a laser do not (only) change their visible color, but also their infrared-absorbing, magnetic, electrical or luminescent properties change are known to the person skilled in the art. The modification of the effect pigments can take place with laser radiation in the ultraviolet, visible or infrared spectral range, for example with a CO 2 laser with a wavelength of 10.6 μm.

Bei einer anderen ebenfalls vorteilhaften Erfindungsvariante wird ein pigmentfreier lasermodifizierbarer Markierungsstoff eingesetzt. Auch pigmentfreie Markierungsstoffe können, beispielsweise als Stich- oder Druckfarbe, auf den Träger aufgebracht oder in das Trägervolumen eingebracht werden. Mit pigmentfreien Markierungsstoffen lässt sich eine Beschichtung hoher Transparenz erzeugen, in die durch Lasereinwirkung mit hoher Geschwindigkeit eine dauerhafte und kontrastreiche Markierung eingebracht werden kann. Pigmentfreie Markierungsstoffe können durch Laserstrahlung im ultravioletten, sichtbaren oder infraroten Spektralbereich beispielsweise mit der 10,6 µm-Strahlung eines CO2-Lasers modifiziert werden. Konkrete, nicht beschränkende Beispiele für pigmentfreie lasermodifizierbare Markierungsstoffe sind in den Druckschriften WO 02/101462 A1 , US 4,343,885 und EP 0290 750 B1 angegeben. Als Markierungsstoffe, die mit einem CO2-Schneidlaser modifizierbar sind, können insbesondere auch die in der Druckschrift EP 1648 969 B1 angegebenen lasermarkierbaren Zusammensetzungen eingesetzt werden.In another likewise advantageous variant of the invention, a pigment-free, laser-modifiable marking substance is used. Pigment-free marking substances can also be applied to the carrier or introduced into the carrier volume, for example as an engraving or printing ink. A coating of high transparency can be produced with pigment-free marking substances, into which a permanent and high-contrast marking can be made by laser action at high speed. Pigment-free marking substances can be modified by laser radiation in the ultraviolet, visible or infrared spectral range, for example with the 10.6 µm radiation of a CO 2 laser. Specific, non-limiting examples of pigment-free laser-modifiable marking substances are given in the publications WO 02/101462 A1 , U.S. 4,343,885 and EP 0290 750 B1 specified. Marking substances that can be modified with a CO2 cutting laser can in particular also be those in the publication EP 1648 969 B1 specified laser-markable compositions are used.

Der Motivbereich wird durch einen ungeschnittenen Bereich des Trägers gebildet. Der Motivbereich ist dann als ungeschnittener Teil des Trägers vor dem Hintergrund des gerasterten Durchsichtsbereichs vor allem im Durchlicht gut zu erkennen.The motif area is formed by an uncut area of the carrier. The motif area can then be easily recognized as an uncut part of the carrier against the background of the screened see-through area, especially in transmitted light.

Gemäß einer weiteren vorteilhaften Erfindungsvariante ist der Motivbereich durch einen ungeschnittenen Bereich des Trägers mit einem Markierungslinienraster aus einer Mehrzahl paralleler Markierungslinien gebildet, die an die Schnittlinien außerhalb des Motivbereichs anschließen. Der Motivbereich ist dabei als ungeschnittener Teil des Trägers im Durchlicht gut zu erkennen und durch die Markierungslinien auch im Aufsicht deutlich sichtbar.According to a further advantageous variant of the invention, the motif area is formed by an uncut area of the carrier with a marking line grid made up of a plurality of parallel marking lines which adjoin the cutting lines outside the motif area. The motif area can be easily recognized as an uncut part of the carrier in transmitted light and clearly visible through the marking lines also in plan view.

Der Träger ist in dieser Erfindungsvariante vorzugsweise mit einem Markierungsstoff versehen, dessen sichtbare Farbe durch die Einwirkung der Laserstrahlung veränderbar ist, so dass die Markierungslinien des Motivbereichs farbig sind. Alternativ oder zusätzlich kann der Träger auch mit einem Markierungsstoff versehen sein, dessen Infrarot-absorbierende, magnetische, elektrische oder lumineszierende Eigenschaften durch die Einwirkung der Laserstrahlung veränderbar sind, so dass die Markierungslinien des Motivbereichs gegenüber ihrem Umfeld veränderte Infrarot-absorbierende, magnetische, elektrische oder lumineszierende Eigenschaften aufweisen. Als Markierungsstoffe kommen auch hier die oben erwähnten Stoffe in Betracht.In this variant of the invention, the carrier is preferably provided with a marking substance, the visible color of which can be changed by the action of the laser radiation, so that the marking lines of the motif area are colored. Alternatively or additionally, the carrier can also be provided with a marking substance whose infrared-absorbing, magnetic, electrical or luminescent properties can be changed by the action of the laser radiation, so that the marking lines of the motif area are infrared-absorbing, magnetic, electrical or infrared-absorbing, magnetic, electrical or changed in relation to their surroundings have luminescent properties. The substances mentioned above can also be used here as marking substances.

Bei einer weiteren vorteilhaften Erfindungsvariante ist der Motivbereich durch einen ungeschnittenen Bereich des Trägers mit mehreren ineinanderliegenden Markierungskonturen abnehmender Größe gebildet. Die Markierungskonturen bilden dabei zweckmäßig die Form des Motivbereichs nach, wobei mit zunehmender Verkleinerung nicht mehr alle Details der Außenkontur des Motivbereichs dargestellt werden müssen. Auch bei einer solchen Gestaltung ist der Motivbereich mit dem dargestellten Markierungsmotiv im Auflicht deutlich erkennbar.In a further advantageous variant of the invention, the motif area is formed by an uncut area of the carrier with several nested marking contours of decreasing size. In this case, the marking contours expediently simulate the shape of the motif area, with the increasing reduction in size no longer having to show all the details of the outer contour of the motif area. Even with such a design, the motif area with the marking motif shown is clearly recognizable in incident light.

Wie bei der vorhergehenden Erfindungsvariante kann der Träger auch bei dieser Variante mit einem Markierungsstoff versehen sein, dessen sichtbare Farbe und/ oder dessen Infrarot-absorbierende, magnetische, elektrische oder lumineszierenden Eigenschaften durch die Einwirkung der Laserstrahlung veränderbar sind, so dass die Markierungskonturen entsprechend veränderte Eigenschaften aufweisen.As with the previous variant of the invention, the carrier can also be provided with a marking substance in this variant, its visible The color and / or its infrared-absorbing, magnetic, electrical or luminescent properties can be changed by the action of the laser radiation, so that the marking contours have correspondingly changed properties.

In allen Gestaltungen kann innerhalb des Motivbereichs eine durchgehende Motivöffnung in Form eines Musters, von Zeichen oder einer Codierung angeordnet sein. In vorteilhaften Gestaltungen steht die Form der Motivöffnung mit der Form des Motivbereichs in einem Sinnzusammenhang. Ein solcher Sinnzusammenhang kann insbesondere darin bestehen, dass die Motivöffnung das gleiche Motiv wie der Motivbereich darstellt, wobei sich die räumliche Lage und/ oder die Größe der beiden dargestellten Motive unterscheiden können. Der Sinnzusammenhang kann auch darin bestehen, dass das erste und zweite dargestellte Motiv jeweils nur Motivteile bilden, die sich zu einem Gesamtmotiv ergänzen, oder darin, dass sich das erste und zweite dargestellte Motiv zu einem schlüssigen Gesamtbild ergänzen.In all designs, a continuous motif opening in the form of a pattern, characters or coding can be arranged within the motif area. In advantageous designs, the shape of the motif opening is related to the shape of the motif area. Such a context of meaning can in particular consist in the fact that the motif opening represents the same motif as the motif area, it being possible for the spatial position and / or the size of the two motifs shown to differ. The context of meaning can also consist in the fact that the first and second depicted motif each only form parts of the motif that complement each other to form an overall motif, or in that the first and second depicted motif complement each other to form a coherent overall picture.

Auch der Durchsichtsbereich selbst kann in allen Gestaltungen in Form eines Musters, von Zeichen oder einer Codierung ausgebildet sein, wobei die Form des Durchsichtsbereichs mit der Form des Motivbereichs und/ oder einer gegebenenfalls vorhandenen Motivöffnung in einem Sinnzusammenhang stehen kann. Die Formen von Durchsichtsbereich, Motivbereich und Motivöffnung können jedoch auch unabhängig voneinander gewählt werden und jeweils eigenständige Motive darstellen.The see-through area itself can also be designed in all designs in the form of a pattern, characters or a code, wherein the shape of the see-through area can be related to the shape of the motif area and / or a possibly existing motif opening. The shapes of the see-through area, motif area and motif opening can, however, also be selected independently of one another and each represent independent motifs.

Bei einer Weiterbildung der Erfindung weist der Durchsichtsbereich neben dem Linienraster aus parallelen Schnittlinien auch ein Markierungslinienraster aus einer Mehrzahl paralleler Markierungslinien auf. Die Schnittlinien und die Markierungslinien können dabei parallel sein oder einen beliebigen Winkel einschließen. Der Motivbereich ist in dieser Weiterbildung mit Vorteil durch einen ungeschnittenen Bereich des Trägers mit zwei Markierungslinienrastern aus jeweils einer Mehrzahl paralleler Markierungslinien gebildet, wobei die Markierungslinien des einen Markierungslinienrasters an die Schnittlinien außerhalb des Motivbereichs anschließen und die Markierungslinien des anderen Markierungslinienrasters an die Markierungslinien außerhalb des Motivbereichs anschließen.In a further development of the invention, in addition to the line grid made up of parallel cutting lines, the see-through area also has a marking line grid made up of a plurality of parallel marking lines. The cutting lines and the marking lines can be parallel or any Include angles. In this development, the motif area is advantageously formed by an uncut area of the carrier with two marking line grids each consisting of a plurality of parallel marking lines, the marking lines of one marking line grid connecting to the cutting lines outside the motif area and the marking lines of the other marking line grid connecting to the marking lines outside the motif area connect.

Nach einer weiteren vorteilhaften Erfindungsvariante ist der Umriss des Motivbereichs mit einer Markierungskontur, insbesondere einer farbigen Markierungskontur, versehen, um die Erkennbarkeit des Motivbereichs im Auflicht zu erhöhen.According to a further advantageous variant of the invention, the outline of the motif area is provided with a marking contour, in particular a colored marking contour, in order to increase the visibility of the motif area in incident light.

In allen Gestaltungen sind die Schnittlinien vorzugsweise mit einer Breite zwischen 0,05 mm und 1 mm, insbesondere zwischen 0,1 mm und 0,4 mm und mit einem Abstand (Mitte-Mitte) zwischen 0,05 mm und 1 mm ausgeführt. Bei einem typischen Abstand von 0,5 mm liegt die Breite der Schnittlinie vorzugsweise zwischen 0,10 und 0,35 mm.In all designs, the cutting lines are preferably designed with a width between 0.05 mm and 1 mm, in particular between 0.1 mm and 0.4 mm and with a distance (center-center) between 0.05 mm and 1 mm. With a typical distance of 0.5 mm, the width of the cutting line is preferably between 0.10 and 0.35 mm.

Der Durchsichtsbereich des Datenträgers ist mit Vorteil durch ein Folienelement verstärkt. Das Folienelement kann als Patch oder als Streifen ausgeformt sein. Alternativ kann das Folienelement auch die gesamte Fläche des Datenträgers bedecken. Das Folienelement kann auf den Träger aufkaschiert oder coextrudiert werden, entweder nur auf einer Oberfläche des Trägers oder auf beiden Oberflächen, d.h. Vorder- und/oder Rückseite. Das Folienelement kann dabei insbesondere ein Linienraster enthalten, das mit dem Linienraster des Durchsichtsbereichs einen Moireeffekt erzeugt, insbesondere indem die Periode des Linienrasters des Folienelements leicht von der Periode des Linienrasters des Durchsichtsbereichs abweicht und/oder die beiden Linienraster gegeneinander gedreht sind.The transparent area of the data carrier is advantageously reinforced by a film element. The film element can be shaped as a patch or as a strip. Alternatively, the film element can also cover the entire surface of the data carrier. The film element can be laminated or coextruded onto the carrier, either only on one surface of the carrier or on both surfaces, ie front and / or rear. The film element can in particular contain a line raster that generates a moire effect with the line raster of the see-through area, in particular by having the period of the line raster of the film element slightly different from the period of the line grid of the see-through area deviates and / or the two line grids are rotated against each other.

In einer weiteren Ausführungsform ist das Folienelement mattiert. Die Mattierung führt dazu, dass der visuelle Eindruck des im Durchsichtsbereich angeordneten Motivbereichs im Auflicht und/ oder Durchlicht sich stärker verändert als ohne Mattierung. Insbesondere ist der Motivbereich im Durchlicht sehr gut, im Auflicht so gut wie nicht mehr sichtbar. Die Mattierung der Folie kann durch Aufbringen einer mattierenden Beschichtung erreicht werden. Vorzugsweise handelt es sich bei der Beschichtung um eine Druckannahmeschicht. Die Druckannahmeschicht umfasst üblicherweise als Hauptkomponenten ein Bindemittel und Kieselgel. Der Kieselgelanteil richtet sich nach der gewünschten Stärke der Mattierung. Je mehr Kieselgel enthalten ist, umso matter wird die Schicht.In a further embodiment, the film element is matted. The matting means that the visual impression of the motif area arranged in the see-through area changes more strongly in incident light and / or transmitted light than without matting. In particular, the subject area is very good in transmitted light, and almost invisible in incident light. The matting of the film can be achieved by applying a matting coating. The coating is preferably a pressure-receiving layer. The print receiving layer usually comprises a binder and silica gel as main components. The proportion of silica gel depends on the desired thickness of the matting. The more silica gel there is, the more matt the layer becomes.

Alternativ zum Aufbringen einer mattierenden Schicht kann auch das Folienelement selbst matt sein. Beispielsweise kommen Polyethylentherephthalat (PET)- oder Polypropylen (PP)-Folie zum Einsatz.As an alternative to applying a matting layer, the film element itself can also be matt. For example, polyethylene terephthalate (PET) or polypropylene (PP) films are used.

In weiteren Ausführungsformen ist das Folienelement zumindest im Bereich des im Durchsichtsbereichs angeordneten Motivbereichs mit einer metallischen Schicht versehen. Vorzugsweise wird die metallische Schicht aufgedampft. Die Dicke der metallischen Schicht ist so bemessen, dass sie einem Betrachter im Auflicht opak erscheint und im Durchlicht zumindest teiltransparent. Im Auflicht kann der Betrachter somit den von der metallischen Schicht überdeckten Motivbereich nicht erkennen, im Durchlicht jedoch sehr gut. Bei einer metallischen Sicht aus Aluminium liegt die Dicke vorzugsweise zwischen 30 nm und 40 nm.In further embodiments, the film element is provided with a metallic layer at least in the area of the motif area arranged in the see-through area. The metallic layer is preferably vapor deposited. The thickness of the metallic layer is such that it appears opaque to an observer in incident light and at least partially transparent in transmitted light. In incident light, the viewer cannot see the motif area covered by the metallic layer, but very well in transmitted light. In the case of a metallic aspect of aluminum, the thickness is preferably between 30 nm and 40 nm.

Es ist jedoch auch möglich, den gerasterten Durchsichtsbereich ohne zusätzliches Folienelement als Sicherheitselement einzusetzen. Bei dem Datenträger kann es sich insbesondere um ein Sicherheitselement, ein Sicherheitspapier oder ein Wertdokument handeln.However, it is also possible to use the screened see-through area as a security element without an additional film element. The data carrier can in particular be a security element, a security paper or a value document.

Die Erfindung enthält auch ein Verfahren zum Herstellen eines Datenträgers der oben genannten Art. Dabei wird in dem Träger ein Durchsichtsbereich gebildet, indem durch Laserschneiden ein Linienraster aus einer Mehrzahl paralleler Schnittlinien erzeugt wird, wobei innerhalb des Durchsichtsbereichs ein Motivbereich mit einem im Auflicht und/ oder Durchlicht veränderten visuellen Eindruck erzeugt wird, der in Form eines Musters, von Zeichen oder einer Codierung ausgebildet wird.The invention also includes a method for producing a data carrier of the above-mentioned type. In this case, a see-through area is formed in the carrier by laser cutting a line grid of a plurality of parallel cutting lines, wherein within the see-through area a motif area with a reflected light and / or Transmitted light changed visual impression is generated, which is formed in the form of a pattern, characters or coding.

Der Motivbereich des Datenträgers wird vorzugsweise durch ein Linienraster aus ersten parallelen Schnittlinien gebildet, die durch denselben Schneidlaserstrahl wie die außerhalb des Motivbereichs liegenden zweiten Schnittlinien des Durchsichtsbereichs erzeugt werden. Die ersten und zweiten Schnittlinien werden dabei durch eine Variation der Laserparameter, insbesondere der Laserleistung und/ oder der Schnittgeschwindigkeit, mit unterschiedlicher Schnittbreite erzeugt.The motif area of the data carrier is preferably formed by a line grid of first parallel cutting lines, which are generated by the same cutting laser beam as the second cutting lines of the see-through area lying outside the motif area. The first and second cutting lines are generated by varying the laser parameters, in particular the laser power and / or the cutting speed, with different cutting widths.

In vorteilhaften Ausgestaltungen wird der Träger vor dem Laserschneiden im Durchsichtsbereich mit einem lasermodifizierbaren Markierungsstoff versehen, so dass die außerhalb des Motivbereichs liegenden Schnittlinien durch die Einwirkung der Laserstrahlung in ihrem Randbereich modifiziert werden. Liegen innerhalb des Motivbereichs Schnittlinien vor, so werden auch diese mit Vorteil durch die Einwirkung der Laserstrahlung in ihrem Randbereich modifiziert.In advantageous embodiments, the carrier is provided with a laser-modifiable marking substance in the see-through area before the laser cutting, so that the cutting lines lying outside the motif area are modified in their edge area by the action of the laser radiation. If there are cutting lines within the motif area, then these are also advantageously modified by the action of the laser radiation in their edge area.

Um den Träger mit einem Markierungsstoff zu versehen, wird der Träger in einer vorteilhaften Erfindungsvariante auf seiner Oberfläche mit dem Markierungsstoff beschichtet, beispielsweise durch ein Druckverfahren. Nach einer anderen ebenfalls vorteilhaften Variante der Erfindung wird der Markierungsstoff in das Volumen des Trägers eingebracht. Dafür stehen je nach Trägermaterial verschiedene Verfahren zur Verfügung. Ist der Träger aus Papier gebildet, kann der Markierungsstoff mit Vorteil schon bei der Blattbildung der Papiermasse beigemischt werden. Eine weitere vorteilhafte Möglichkeit besteht darin, den Markierungsstoff in einem Tauchbad in das Volumen des Papiersubstrats einzubringen oder das Papiersubstrat in einer Leimpresse mit dem Markierungsstoff zu imprägnieren. Ist der Träger aus einer Kunststofffolie gebildet, kann der Markierungsstoff gleichfalls bereits bei der Herstellung der Folie oder nachträglich durch einen Imprägnierungsschritt in das Volumen der Folie eingebracht werden.In order to provide the carrier with a marking substance, in an advantageous variant of the invention the surface of the carrier is coated with the marking substance, for example by a printing process. According to another likewise advantageous variant of the invention, the marking substance is introduced into the volume of the carrier. Various methods are available for this, depending on the carrier material. If the carrier is made of paper, the marking substance can advantageously be added to the paper pulp during sheet formation. Another advantageous possibility is to introduce the marking substance into the volume of the paper substrate in an immersion bath or to impregnate the paper substrate with the marking substance in a size press. If the carrier is formed from a plastic film, the marking substance can also be introduced into the volume of the film during the production of the film or subsequently by means of an impregnation step.

In einer vorteilhaften Verfahrensvariante wird der Motivbereich durch einen ungeschnittenen Bereich des Trägers gebildet. Insbesondere kann der Motivbereich durch einen ungeschnittenen Bereich des Trägers mit einem Markierungslinienraster mit parallelen Markierungslinien gebildet werden, die durch denselben Laserstrahl wie die außerhalb des Motivbereichs liegenden Schnittlinien des Durchsichtsbereichs erzeugt werden. Die außerhalb des Motivbereichs liegenden Schnittlinien und die Markierungslinien des Motivbereichs werden dabei durch eine Variation der Laserparameter, insbesondere der Laserleistung und/oder der Schnittgeschwindigkeit, erzeugt.In an advantageous variant of the method, the motif area is formed by an uncut area of the carrier. In particular, the motif area can be formed by an uncut area of the carrier with a marking line grid with parallel marking lines that are generated by the same laser beam as the cut lines of the see-through area lying outside the motif area. The cutting lines lying outside the motif area and the marking lines of the motif area are generated by varying the laser parameters, in particular the laser power and / or the cutting speed.

Gemäß einer weiteren vorteilhaften Erfindungsvariante wird der Motivbereich durch einen ungeschnittenen Bereich des Trägers mit mehreren ineinanderliegenden Markierungskunturen abnehmender Größe gebildet.According to a further advantageous variant of the invention, the motif area is formed by an uncut area of the carrier with several nested marking patterns of decreasing size.

Bei der Erzeugung des Linienrasters aus der Mehrzahl paralleler Schnittlinien entstehen im Allgemeinen sehr dünne Papierstege. Überraschenderweise wurde jedoch gefunden, dass die Papierstege jedenfalls so stabil sind, dass sie bis zu einer Folienapplikation des Durchsichtsbereichs halten. Nach der Folienapplikation des Durchsichtsbereichs sind die Papierstege durch die Folie stabilisiert. Die erfindungsgemäßen Durchsichtsbereiche eignen sich daher insbesondere für Sicherheitselemente bzw. Wertdokumente mit Folienelementen oder ein Folienverbunddokument. Teilweise sind die Papierstege sogar so stabil, dass sie auch ohne eine stabilisierende Folie eingesetzt werden können.When the line grid is generated from the plurality of parallel cutting lines, very thin paper webs are generally produced. Surprisingly, however, it has been found that the paper webs are in any case so stable that they hold up to a film application of the see-through area. After the film has been applied to the see-through area, the paper webs are stabilized by the film. The see-through areas according to the invention are therefore particularly suitable for security elements or documents of value with foil elements or a foil composite document. In some cases, the paper webs are so stable that they can be used without a stabilizing film.

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 as well as advantages of the invention are explained below with reference to the figures, in the representation of which a reproduction true to scale and proportion was dispensed with in order to increase the clarity.

Es zeigen:

Fig. 1
eine schematische Darstellung einer Banknote mit einem erfindungsgemäßen Durchsichtsbereich,
Fig. 2
eine Detailaufsicht auf den Durchsichtsbereich von Fig. 1,
Fig. 3
in (a) eine Skizze zur Erläuterung der Veränderung der Schnittbreite bei Schneidlaserstrahlen mit unterschiedlich hohen Maximalleistungen und in (b) zur Erläuterung der Veränderung der Schnittbreite durch eine Änderung der Schnittgeschwindigkeit bei konstanter maximaler Laserleistung,
Fig. 4
eine Aufsicht auf einen Durchsichtsbereich nach einem anderen Ausführungsbeispiel der Erfindung,
Fig. 5
eine Aufsicht auf einen Durchsichtsbereich nach einem weiteren Ausführungsbeispiel der Erfindung,
Fig. 6
einen Detailausschnitt von Fig. 5 am Übergang von Motivbereich und Durchsichtsbereich,
Fig. 7
schematisch die räumliche Energieverteilung eines Schneidlaserstrahls zur Erläuterung der Entstehung des Randeffekts,
Fig. 8
eine Aufsicht auf einen Durchsichtsbereich nach einem weiteren Ausführungsbeispiel der Erfindung,
Fig. 9
eine Aufsicht auf einen Durchsichtsbereich nach noch einem weiteren Ausführungsbeispiel der Erfindung,
Fig. 10
einen Detailausschnitt von Fig. 9 am Übergang von Motivbereich und Durchsichtsbereich,
Fig. 11 bis 14
Aufsichten auf Durchsichtsbereiche nach weiteren Ausführungsbeispielen der Erfindung, und
Fig. 15
einen Detailausschnitt von Fig. 14 am Übergang von Motivbereich und Durchsichtsbereich.
Show it:
Fig. 1
a schematic representation of a bank note with a see-through area according to the invention,
Fig. 2
a detailed view of the viewing area of Fig. 1 ,
Fig. 3
in (a) a sketch to explain the change in the cutting width in the case of cutting laser beams with different maximum powers and in (b) to explain the change in the cutting width due to a change in the cutting speed at constant maximum laser power,
Fig. 4
a plan view of a see-through area according to another embodiment of the invention,
Fig. 5
a plan view of a see-through area according to a further embodiment of the invention,
Fig. 6
a detail of Fig. 5 at the transition between the motif area and the see-through area,
Fig. 7
schematically the spatial energy distribution of a cutting laser beam to explain the origin of the edge effect,
Fig. 8
a plan view of a see-through area according to a further embodiment of the invention,
Fig. 9
a plan view of a see-through area according to yet another embodiment of the invention,
Fig. 10
a detail of Fig. 9 at the transition between the motif area and the see-through area,
Figures 11-14
Top views of see-through areas according to further exemplary embodiments of the invention, and
Fig. 15
a detail of Fig. 14 at the transition between the motif area and the see-through area.

Die Erfindung wird nun am Beispiel einer Banknote erläutert. Die Figuren 1 und 2 zeigen dazu eine schematische Darstellung einer Banknote 10, die einen in Fig. 2 genauer dargestellten erfindungsgemäßen Durchsichtsbereich 12 aufweist. Zur Stabilisierung kann der Durchsichtsbereich 12 auf der Banknote 10 mit einem nicht dargestellten transparenten Folienelement verstärkt sein.The invention will now be explained using the example of a bank note. the Figures 1 and 2 show a schematic representation of a bank note 10, the one in Fig. 2 has see-through area 12 according to the invention shown in more detail. For stabilization, the see-through area 12 on the bank note 10 can be reinforced with a transparent film element (not shown).

Mit Bezug auf die Aufsicht der Fig. 2 ist der Durchsichtsbereich 12 durch ein Linienraster aus einer Mehrzahl paralleler Schnittlinien 22 gebildet, die durch Einwirkung von Laserstrahlung in das Banknotenpapier 20 geschnitten wurden. Im Ausführungsbeispiel weist das Linienraster der Schnittlinien 22 eine Periodenlänge von 0,5 mm bei einer Schnittbreite der Schnittlinien 22 von 0,15 mm auf, so dass die Flächendeckung des Linienrasters bei 30% liegt. Der Durchsichtsbereich ist daher sowohl in Aufsicht als auch in Durchsicht erkennbar.With reference to the supervision of the Fig. 2 the see-through area 12 is formed by a line grid of a plurality of parallel cutting lines 22 which have been cut into the bank note paper 20 by the action of laser radiation. In the exemplary embodiment, the line grid of the cutting lines 22 has a period length of 0.5 mm with a cutting width of the cutting lines 22 of 0.15 mm, so that the area coverage of the line grid is 30%. The see-through area can therefore be seen both from above and through.

Der Durchsichtsbereich 12 ist in Form eines geometrischen Musters, beispielsweise des in Fig. 2 dargestellten Ovals ausgebildet. Der Umriss des Durchsichtsbereichs ist in der Figur durch die gestrichelt eingezeichnete Umrandung 24 angedeutet und dient lediglich der zeichnerischen Veranschaulichung der gebildeten Form.The see-through area 12 is in the form of a geometric pattern, for example that in FIG Fig. 2 formed oval. The outline of the see-through area is indicated in the figure by the outline 24 drawn in dashed lines and is only used to graphically illustrate the shape formed.

Innerhalb des Durchsichtsbereichs 12 ist ein Motivbereich 30 angeordnet, der verglichen mit dem umgebenden Durchsichtsbereich 12 im Auflicht und/ oder Durchlicht einen veränderten visuellen Eindruck aufweist und dadurch für den Betrachter erkennbar ist. Der Motivbereich 30 ist allgemein in Form eines Musters, von Zeichen oder einer Codierung ausgebildet und hat im Ausführungsbeispiel die Form eines Ahornblattes. Auch der gestrichelt eingezeichnete Umriss 34 des Motivbereichs 30 dient lediglich der zeichnerischen Veranschaulichung der Form des Motivbereichs 30 und entspricht nicht notwendigerweise einer tatsächlich vorhandenen Kontur auf der Banknote.A motif area 30 is arranged within the see-through area 12, which, compared to the surrounding see-through area 12, has a changed visual impression in incident light and / or transmitted light and is thus recognizable for the viewer. The motif area 30 is generally designed in the form of a pattern, characters or coding and, in the exemplary embodiment, has the shape of a maple leaf. The outline 34 of the motif area 30 drawn in dashed lines also serves merely to illustrate the shape of the motif area 30 in the drawing and corresponds not necessarily an actually existing contour on the bank note.

Auch wenn der Durchsichtsbereich und der Motivbereich in diesem und den nachfolgend beschriebenen Ausführungsbeispielen beispielhaft in Form eines Ovals bzw. eines Ahornblattes dargestellt sind, dienen diese speziellen Formen lediglich der übersichtlichen Darstellung der verschiedenen Ausführungsbeispiele und sind keinesfalls einschränkend zu verstehen.Even if the see-through area and the motif area in this and the exemplary embodiments described below are shown as an example in the form of an oval or a maple leaf, these special shapes only serve to provide a clear representation of the various exemplary embodiments and are in no way to be understood as restrictive.

Bei dem Ausführungsbeispiel der Fig. 2 ist auch der Motivbereich 30 selbst durch ein Linienraster aus einer Mehrzahl paralleler Schnittlinien 32 gebildet, die perfekt gepassert an die außerhalb des Motivbereichs 30 liegenden Schnittlinien 22 des Durchsichtsbereichs 12 anschließen. Die Schnittlinien 32 des Motivbereichs 30 sind allerdings mit einer Schnittbreite von 0,3 mm ausgebildet und damit wesentlich breiter als die außerhalb des Motivbereichs vorliegenden Schnittlinien 22. Aufgrund der geringeren Flächendeckung des Papiers im Motivbereich 30 ist das von diesem gebildete Motiv "Ahornblatt" je nach den Lichtverhältnissen und dem Hintergrund im Auflicht und/ oder Durchlicht deutlich zu erkennen. Es versteht sich, dass auch andere als die beispielhaft genannten Zahlenwerte für die Periodenlängen und Schnittbreiten in Betracht kommen. Beispielsweise kann bei einer Periodenlänge von 0,5 mm die Schnittbreite der Schnittlinien 22 außerhalb des Motivbereichs 30 zwischen 0,10 mm und 0,20 mm und die Schnittbreite der Schnittlinien 22 innerhalb des Motivbereichs 30 zwischen 0,25 mm und 0,35 mm liegen. Bei größeren oder kleineren Periodenlängen können die Schnittbreiten entsprechend erhöht bzw. erniedrigt werden.In the embodiment of Fig. 2 the motif area 30 itself is also formed by a line grid of a plurality of parallel cutting lines 32, which are perfectly aligned with the cutting lines 22 of the see-through area 12 lying outside the motif area 30. The cutting lines 32 of the motif area 30 are, however, formed with a cutting width of 0.3 mm and thus much wider than the cutting lines 22 present outside the motif area The light conditions and the background can be clearly seen in incident light and / or transmitted light. It goes without saying that numerical values other than those mentioned by way of example can also be considered for the period lengths and cutting widths. For example, with a period length of 0.5 mm, the cutting width of the cutting lines 22 outside the motif area 30 can be between 0.10 mm and 0.20 mm and the cutting width of the cutting lines 22 within the motif area 30 can be between 0.25 mm and 0.35 mm . With larger or smaller period lengths, the cutting widths can be increased or decreased accordingly.

Die perfekte Passerung der verschieden breiten Schnittlinien 22, 32 wird dadurch sichergestellt, dass die Schnittlinien 22, 32 durch Laserschneiden mit demselben Schneidlaserstrahl im selben Arbeitsgang erzeugt werden. Die unterschiedlichen Schnittbreiten werden durch eine Variation der Laserparameter, insbesondere der Laserleistung und/ oder der Schnittgeschwindigkeit, beim Schneidevorgang erzeugt.The perfect registration of the cutting lines 22, 32 of different widths is ensured by the cutting lines 22, 32 being laser-cut with the same cutting laser beam can be generated in the same operation. The different cutting widths are generated by varying the laser parameters, in particular the laser power and / or the cutting speed, during the cutting process.

Zur Illustration ist in Fig. 3(a) die im Wesentlichen gaußförmige räumliche Verteilung der Leistung W eines Schneidlaserstrahls gezeigt. Bei konstanter Schnittgeschwindigkeit und hoher Maximalleistung (Verteilung 40) überschreitet der Energieeintrag der Laserstrahlung ins Papier die zum Schneiden des Papiers 20 benötigte Schwellenenergie in einem breiten Schnittbereich 42. Bei einer Verteilung 44 mit einer niedrigeren Maximalleistung wird die zum Schneiden des Papiers 20 benötigte Schwellenenergie dagegen nur in einem schmäleren Schnittbereich 46 überschritten, so dass eine kleinere Schnittbreite resultiert. Auf diese Weise kann bei konstanter Schnittgeschwindigkeit durch die praktisch instantan mögliche Variation der Laserleistung die Schnittbreite des Laserstrahls entlang der Laserstrahlführung nach Wunsch variiert werden.For illustration is in Fig. 3 (a) the essentially Gaussian spatial distribution of the power W of a cutting laser beam is shown. With a constant cutting speed and high maximum power (distribution 40), the energy input of the laser radiation into the paper exceeds the threshold energy required to cut the paper 20 in a wide cutting area 42 exceeded in a narrower cutting area 46, so that a smaller cutting width results. In this way, with a constant cutting speed, the cutting width of the laser beam along the laser beam guide can be varied as desired by the practically instantaneous variation of the laser power.

Mit Bezug auf Fig. 2 können aneinander anschließende Schnittlinien 22, 32 auf diese Weise in einem Arbeitsgang als durchgehende und damit perfekt gepasserte Schnittlinien erzeugt werden. Beim Übergang vom Durchsichtsbereichs 12 (Schnittlinien 22) in den Motivbereich 30 (Schnittlinien 32) wird dazu die Laserleistung und damit die Schnittbreite erhöht und beim Übergang vom Motivbereich 30 (Schnittlinien 32) in den Durchsichtsbereich 12 (Schnittlinien 22) wird die Laserleistung und damit die Schnittbreite wieder erniedrigt.Regarding Fig. 2 adjoining cutting lines 22, 32 can be generated in this way in one operation as continuous and thus perfectly matched cutting lines. At the transition from the see-through area 12 (cut lines 22) to the motif area 30 (cut lines 32), the laser power and thus the cutting width are increased and at the transition from the motif area 30 (cut lines 32) to the see-through area 12 (cut lines 22), the laser power and thus the Cutting width decreased again.

Fig. 3(b) illustriert die Veränderung der Schnittbreite durch eine Änderung der Schnittgeschwindigkeit bei konstanter maximaler Laserleistung (Verteilung 50). Bei einer hohen Schnittgeschwindigkeit wirkt die Laserstrahlung nur relativ kurz auf das Papier ein, so dass der Energieeintrag ins Papier gering ist. Entsprechend wird die zum Schneiden des Papiers benötigte Schwellenenergie nur in einem schmalen Schnittbereich 52 mit hoher Laserleistung überschritten. Bei einer niedrigeren Schnittgeschwindigkeit wirkt die Laserstrahlung dagegen länger auf das Papier ein, so dass ein höherer Energieeintrag ins Papier resultiert. Entsprechend ergibt sich ein breiterer Schnittbereich 54, in dem die zum Schneiden des Papiers benötigte Schwellenergie überschritten wird. Fig. 3 (b) illustrates the change in the cutting width due to a change in the cutting speed with constant maximum laser power (distribution 50). At a high cutting speed, the laser radiation only acts on the paper for a relatively short time, so that the energy input into the paper is low. Accordingly, the threshold energy required for cutting the paper is exceeded only in a narrow cutting area 52 with high laser power. At a lower cutting speed, on the other hand, the laser radiation acts longer on the paper, so that a higher energy input into the paper results. Correspondingly, a wider cutting area 54 results, in which the threshold energy required for cutting the paper is exceeded.

Mit Bezug auf Fig. 2 können aneinander anschließende Schnittlinien 22, 32 daher auch dadurch in einem Arbeitsgang als durchgehende und daher perfekt gepasserte Schnittlinien erzeugt werden, dass die Schnittgeschwindigkeit beim Übergang vom Durchsichtsbereichs 12 (Schnittlinien 22) in den Motivbereich 30 (Schnittlinien 32) erniedrigt und damit die Schnittbreite erhöht wird und dass beim Übergang vom Motivbereich 30 (Schnittlinien 32) in den Durchsichtsbereich 12 (Schnittlinien 22) die die Schnittgeschwindigkeit wieder erhöht und damit die Schnittbreite erniedrigt wird.Regarding Fig. 2 Adjoining cutting lines 22, 32 can therefore also be generated in one operation as continuous and therefore perfectly matched cutting lines by reducing the cutting speed at the transition from the transparent area 12 (cutting lines 22) to the motif area 30 (cutting lines 32) and thus increasing the cutting width and that at the transition from the motif area 30 (cutting lines 32) to the see-through area 12 (cutting lines 22) the cutting speed is increased again and the cutting width is thus reduced.

Der Einfachheit wurden die Auswirkungen der Änderung der Laserparameter Leistung und Schnittgeschwindigkeit in Fig. 3 jeweils getrennt erläutert. Es versteht sich jedoch, dass die beiden Parameter auch gemeinsam und gleichzeitig verändert werden können, um eine größere Variationsbreite zur Verfügung zu haben.The effects of changing the laser parameters power and cutting speed in Fig. 3 each explained separately. It goes without saying, however, that the two parameters can also be changed jointly and simultaneously in order to have a greater range of variation available.

Fig. 4 zeigt ein weiteres Ausführungsbeispiel eines erfindungsgemäß gestalteten Durchsichtsbereichs 60, bei dem die außerhalb des Motivbereichs 64 liegenden parallelen Schnittlinien 22, wie bei Fig. 2, durch Laserschneiden erzeugt wurden. Im Unterschied zur Gestaltung der Fig. 2 wurde innerhalb des Motivbereichs 64 die Laserleistung des Schneidlasers unter die Schneideschwelle des Papiers 20 gesenkt, so dass dort keine Schnittlinien erzeugt wurden. Der Motivbereich 64 bleibt so als ungeschnittenes Papierstück stehen und ist vor dem Hintergrund des gerasterten Durchsichtsbereichs 60 vor allem im Durchlicht deutlich zu erkennen. Fig. 4 shows a further exemplary embodiment of a see-through area 60 designed according to the invention, in which the parallel cutting lines 22 lying outside the motif area 64, as in FIG Fig. 2 , created by laser cutting. In contrast to the design of the Fig. 2 was within of the motif area 64, the laser power of the cutting laser is lowered below the cutting threshold of the paper 20, so that no cutting lines were generated there. The motif area 64 thus remains as an uncut piece of paper and can be clearly seen against the background of the rasterized see-through area 60, especially in transmitted light.

Bei dem Ausführungsbeispiel der Fig. 5 sind der Durchsichtsbereich 70 und der Motivbereich 80, wie in Fig. 2, jeweils durch ein Linienraster aus einer Mehrzahl paralleler Schnittlinien 72 bzw. 82 gebildet, wobei die Schnittlinien 72, 82 aneinander anschließen und die Schnittbreite der Schnittlinien 72 außerhalb des Motivbereichs 80 durch geeigneten Variation der Laserparameter kleiner als die Schnittbreite der Schnittlinien 82 innerhalb des Motivbereichs 80 gewählt ist.In the embodiment of Fig. 5 are the see-through area 70 and the motif area 80, as in FIG Fig. 2 , each formed by a line grid of a plurality of parallel cutting lines 72 and 82, the cutting lines 72, 82 connecting to one another and the cutting width of the cutting lines 72 outside the motif area 80 smaller than the cutting width of the cutting lines 82 within the motif area 80 by suitable variation of the laser parameters is chosen.

Zusätzlich sind sowohl die Schnittlinien 72 als auch die Schnittlinien 82 jeweils an beiden Seiten von einen perfekt gepasserten farbigen Rand 74 bzw. 84 umgeben, wie in dem Detailausschnitt der Fig. 6 näher dargestellt, der den Übergang einer Schnittlinie 72 in eine Schnittlinie 82 am Rand 86 des Motivbereichs 80 zeigt.In addition, both the cutting lines 72 and the cutting lines 82 are each surrounded on both sides by a perfectly matched colored border 74 and 84, as in the detail section of FIG Fig. 6 shown in more detail, which shows the transition from a cutting line 72 to a cutting line 82 at the edge 86 of the motif area 80.

Um einen solchen zu den Schnittlinien perfekt gepasserten farbigen Rand 74, 84 zu erzeugen, wurde das Banknotenpapier 20 vor dem Laserschneiden einer gewissen Umgebung des zu erzeugenden Durchsichtsbereichs 70 mit lasermodifizierbaren Effektpigmenten versehen, die bei Einwirkung von Laserstrahlung eine gewünschte Farbänderung, beispielsweise von farblos zu rot, zeigen.In order to create such a colored edge 74, 84 that perfectly matches the cutting lines, the banknote paper 20 was provided with laser-modifiable effect pigments prior to laser cutting of a certain area surrounding the transparent area 70 to be created, which when exposed to laser radiation produce a desired color change, for example from colorless to red , demonstrate.

Das Prinzip der gleichzeitigen und perfekt gepasserten Erzeugung der Schnittlinien 72, 82 und der farbigen Ränder 74, 84 ist in Fig. 7 illustriert, wo wiederum schematisch die räumliche Leistungs- bzw. Energieverteilung 55 des Schneidlaserstrahls gezeigt ist. In einem inneren Bereich, dem Schnittbereich 56, überschreitet die Laserenergie die zum Schneiden des Papiers 20 benötigte Schwellenergie E1. Mit E2 ist in Fig. 7 die Reaktionsenergie der Effektpigmente bezeichnet, bei deren Überschreiten die gewünschte Farbänderung erfolgt. Wie aus der Figur unmittelbar ersichtlich, liegt in einem äußeren Bereich des Laserstrahlprofils, dem Markierungsbereich 58, die Laserenergie zwischen der für die Farbänderung benötigen Reaktionsenergie E2 und der zum Schneiden benötigen Energie Ei, so dass in dem Markierungsbereich 58 eine Farbänderung der Effektpigmente induziert wird, der Träger aber nicht geschnitten wird.The principle of the simultaneous and perfectly matched generation of the cutting lines 72, 82 and the colored edges 74, 84 is shown in FIG Fig. 7 illustrated where again the spatial power or energy distribution 55 of the cutting laser beam is shown schematically. In an inner area, the cutting area 56, the laser energy exceeds the threshold energy E 1 required for cutting the paper 20. With E 2 is in Fig. 7 denotes the reaction energy of the effect pigments which, when exceeded, results in the desired color change. As can be seen directly from the figure, in an outer area of the laser beam profile, the marking area 58, the laser energy lies between the reaction energy E 2 required for the color change and the energy Ei required for cutting, so that a color change of the effect pigments is induced in the marking area 58 , but the carrier is not cut.

Das mit den lasermodifizierbaren Effektpigmenten versehene Banknotenpapier 20 wird daher durch den Laserstrahl 55 in einem zentralen Bereich 72 bzw. 82, der dem Schnittbereich 56 der Fig. 7 entspricht, geschnitten und zusätzlich in einem Randbereich 74, 84 in perfekter Passerung zu den Schnittlinie 72 bzw. 82 eingefärbt. Die Breite des eingefärbten Randbereichs 74, 84 entspricht dabei der Breite des Markierungsbereichs 58 und hängt von dem Strahlprofil, der Reaktionsenergie der verwendeten Effektpigmente und den Materialeigenschaften des Papiers ab. Außerhalb des Schnittbereichs 56 und des Markierungsbereichs 58 liegt die Laserenergie unterhalb der Reaktionsschwelle der Effektpigmente, so dass das Papier dort nicht verändert wird.The bank note paper 20 provided with the laser-modifiable effect pigments is therefore produced by the laser beam 55 in a central region 72 or 82, which corresponds to the cutting region 56 of FIG Fig. 7 corresponds, cut and additionally colored in an edge area 74, 84 in perfect register with the cutting line 72 and 82, respectively. The width of the colored edge area 74, 84 corresponds to the width of the marking area 58 and depends on the beam profile, the reaction energy of the effect pigments used and the material properties of the paper. Outside the cut area 56 and the marking area 58, the laser energy lies below the reaction threshold of the effect pigments, so that the paper is not changed there.

Die lasermodifizierbaren Effektpigmente können auf das Banknotenpapier 20 aufgebracht, beispielsweise aufgedruckt werden, oder können in das Volumen des Banknotenpapiers 20 eingebracht werden. Dies kann bereits bei der Papierherstellung durch Beimischung der Effektpigmente zur Papiermasse bei der Blattbildung geschehen oder auch nachfolgend in einem Tauchbad oder durch eine Imprägnierung in der Leimpresse. Auch Curtain Coating und Streichverfahren kommen in Betracht.The laser-modifiable effect pigments can be applied to the banknote paper 20, for example printed on, or can be introduced into the volume of the banknote paper 20. This can already be done during paper production by admixing the effect pigments to the paper pulp during sheet formation or subsequently in one go Immersion bath or by impregnation in the size press. Curtain coating and painting processes can also be considered.

Anstelle der beispielhaft genannten Effektpigmente kann auch ein pigmentfreier lasermodifizierbarer Markierungsstoff eingesetzt werden. Auch solche pigmentfreie Markierungsstoffe können, beispielsweise als Stich- oder Druckfarbe, auf den jeweiligen Träger aufgedruckt oder in das Volumen des Trägers eingebracht werden. Nicht pigmentierte lasermodifizierbare Beschichtungen können im unbeschrifteten Zustand eine sehr hohe Transparenz aufweisen. Durch Einwirkung von Laserstrahlung, beispielsweise eines CO2-Lasers bei 10,6 µm, lassen sich mit hoher Geschwindigkeit dauerhafte und kontrastreiche Randmarkierungen erzeugen.Instead of the effect pigments mentioned by way of example, a pigment-free, laser-modifiable marking substance can also be used. Such pigment-free marking substances can also be printed onto the respective carrier, for example as an engraving or printing ink, or incorporated into the volume of the carrier. Non-pigmented, laser-modifiable coatings can have a very high level of transparency when they are not written on. By exposure to laser radiation, for example a CO 2 laser at 10.6 µm, permanent and high-contrast edge markings can be produced at high speed.

Neben der Modifikation der Effektpigmente bzw. des pigmentfreien Markierungsstoffs durch die Laserstrahlung selbst kommt auch eine Modifikation der Effektpigmente durch die beim Laserstrahlschneiden erzeugte Wärme infrage. Auf diese Weise kann der modifizierte Randbereich der Schnittlinien sogar größer als die Strahlausdehnung sein.In addition to the modification of the effect pigments or the pigment-free marking substance by the laser radiation itself, a modification of the effect pigments by the heat generated during laser cutting is also possible. In this way, the modified edge area of the cutting lines can even be larger than the beam extension.

Um den Umriss 86 des Motivbereichs 80 im Auflicht besser erkennbar zu machen, kann die Außenkontur 88 des Motivbereichs 80 mithilfe der Laserstrahlung markiert werden, wie in Fig. 8 gezeigt. Zur Erzeugung der Außenkontur 88 werden die Laserparameter so eingestellt, dass die Laserenergie über dem gesamten Strahldurchmesser unterhalb der Schneideschwelle des Papiers, jedoch in einem inneren Bereich noch oberhalb der Reaktionsschwelle der Effektpigmente liegt. Dies kann beispielsweise durch die Wahl einer Laserenergie E zwischen E1 und E2 in Fig. 7 oder auch durch eine Anpassung der Schnittgeschwindigkeit erreicht werden. Der Farbeffekt der Außenkontur 88 kann auch so gestaltet werden, dass die Effektpigmente bzw. der pigmentfreie Markierungsstoffs in der Mitte der Linie abgetragen wird und die darunterliegende Schicht oder die Papieroberfläche zum Vorschein kommt.In order to make the outline 86 of the motif area 80 more recognizable in incident light, the outer contour 88 of the motif area 80 can be marked with the aid of the laser radiation, as in FIG Fig. 8 shown. To generate the outer contour 88, the laser parameters are set in such a way that the laser energy over the entire beam diameter is below the cutting threshold of the paper, but in an inner area is still above the reaction threshold of the effect pigments. This can be done, for example, by choosing a laser energy E between E 1 and E 2 in Fig. 7 or can be achieved by adjusting the cutting speed. The color effect of the outer contour 88 can also be designed in such a way that the effect pigments or the pigment-free marking substance is removed in the middle of the line and the underlying layer or the paper surface is revealed.

Fig. 9 zeigt ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Durchsichtsbereichs 90, bei dem die außerhalb des Motivbereichs 100 liegenden parallelen Schnittlinien 92, wie bei Fig. 5, durch Laserschneiden eines mit einem Markierungsstoff versehenen Banknotenpapiers 20 zusammen mit einem gepasserten farbigen Rand 94 erzeugt wurden. Im Unterschied zur Gestaltung der Fig. 5 wurden die Laserparameter des Schneidlasers beim Übergang in den Motivbereich 100 so variiert, dass der Energieeintrag ins Papier unterhalb der Schneideschwelle des Papiers 20, jedoch noch oberhalb der Reaktionsschwelle des Markierungsstoffs liegt. Auf diese Weise erzeugt der Laserstrahl innerhalb des Motivbereichs 100 keinen Schnittlinien mit farbigen Rand mehr, sondern nur noch farbige Markierungslinien 102, die an die Schnittlinien 92 anschließen und perfekt zu diesen gepassert sind. Fig. 9 shows a further embodiment of a see-through area 90 according to the invention, in which the parallel cutting lines 92 lying outside of the motif area 100, as in FIG Fig. 5 , by laser cutting a banknote paper 20 provided with a marking substance together with a registered colored border 94. In contrast to the design of the Fig. 5 the laser parameters of the cutting laser were varied during the transition into the motif area 100 so that the energy input into the paper is below the cutting threshold of the paper 20, but still above the reaction threshold of the marking substance. In this way, the laser beam no longer generates cutting lines with a colored border within the motif area 100, but only colored marking lines 102 which adjoin the cutting lines 92 and are perfectly matched to them.

Das Erscheinungsbild der Schnittlinien 92 mit farbigem Rand 94 und den anschließenden Markierungslinien 102 im Bereich des Umrisses 106 des Motivbereichs ist in dem Detailausschnitt der Fig. 10 nochmals näher dargestellt. Ein derartiger gepasserter Übergang von farbigen Markierungslinien zu farbig berandeten Schnittlinien ist visuell attraktiv, einfach nachzuweisen und stellt zudem für einen Fälscher eine schwer zu überwindende technische Hürde dar. Auch bei dieser Ausgestaltung kann die Außenkontur des Motivbereichs 100 zusätzlich mit Laserstrahlung markiert werden, wie im Zusammenhang mit Fig. 8 bereits erläutert.The appearance of the cutting lines 92 with colored border 94 and the subsequent marking lines 102 in the area of the outline 106 of the motif area is shown in the detail section of FIG Fig. 10 shown again in more detail. Such a matched transition from colored marking lines to colored bordered cutting lines is visually attractive, easy to detect and also represents a technical hurdle difficult to overcome for a forger with Fig. 8 already explained.

Bei der in Fig. 11 gezeigten Variante der Gestaltung der Fig. 9 ist innerhalb des Motivbereichs 100 ein weiterer Bereich 110 vorgesehen, in dem die Markierungslinien 102 wieder in farbig berandete Schnittlinien 92, 94 übergehen. Die Form des weiteren Bereichs 110 kann dabei mit der Form des Motivbereichs 100 in einem Sinnzusammenhang stehen und beispielsweise dasselbe Motiv darstellen, wie in Fig. 11 beispielhaft gezeigt. Eine solche Gestaltung kann auch als ein Durchsichtsbereich mit einem ringförmigen Motivbereich 112 angesehen werden.At the in Fig. 11 shown variant of the design of the Fig. 9 a further area 110 is provided within the motif area 100, in which the marking lines 102 merge again into cut lines 92, 94 with colored edges. The shape of the further area 110 can be related to the shape of the motif area 100 and, for example, represent the same motif as in FIG Fig. 11 shown as an example. Such a design can also be viewed as a see-through area with an annular motif area 112.

Es versteht sich, dass entlang der Laserstrahlführung in einem Durchsichtsbereich auch mehrere Übergänge zwischen Markierungslinien 102 und farbig berandeten Schnittlinien 92, 94 vorgesehen sein können. Derartige Gestaltungen können allgemein als Durchsichtsbereich mit einem Motivbereich betrachtet werden, der nicht notwendigerweise zusammenhängend oder konvex ist, also beispielsweise aus mehreren nicht zusammenhängenden Teilbereichen mit Löchern besteht. Auch bei solchen Ausgestaltungen kann die Kontur des Motivbereichs bzw. deren Teilbereiche mit Laserstrahlung markiert werden, wie bereits bei Fig. 8 erläutert.It goes without saying that several transitions between marking lines 102 and color-edged cutting lines 92, 94 can also be provided along the laser beam guide in a see-through area. Such designs can generally be viewed as a see-through area with a motif area that is not necessarily contiguous or convex, that is, for example, consists of several non-contiguous partial areas with holes. In such configurations, too, the contour of the motif area or its partial areas can be marked with laser radiation, as already in Fig. 8 explained.

Das weitere Ausführungsbeispiel der Fig. 12 zeigt einen erfindungsgemäßen Durchsichtsbereich 120, bei dem die außerhalb des Motivbereichs 130 liegenden parallelen Schnittlinien 122, wie bei Fig. 5, durch Laserschneiden eines mit einem Markierungsstoff versehenen Banknotenpapiers 20 mit einem gepasserten farbigen Rand 124 erzeugt wurden. Im Motivbereich 130 wurden die Schnittlinien 122,124 unterbrochen, so dass der Motivbereich 130 einen ungeschnittenen Papierbereich innerhalb des Durchsichtsbereichs 120 bildet.The further embodiment of the Fig. 12 shows a see-through area 120 according to the invention, in which the parallel cutting lines 122 lying outside of the motif area 130, as in FIG Fig. 5 , by laser cutting of a bank note paper 20 provided with a marking substance with a registered colored border 124. In the motif area 130, the cutting lines 122, 124 were interrupted so that the motif area 130 forms an uncut paper area within the see-through area 120.

Dann wurde der Motivbereich 130 mit dem Laser mit einer Laserenergie, die zwischen der Reaktionsschwelle des Markierungsstoffs und der Schneideschwelle des Papiers 20 liegt, mit konzentrischen Markierungskonturen 132 versehen, deren Form der Kontur des Motivbereichs nachgebildet ist. Die konzentrischen Markierungskonturen stellen dabei nicht notwendigerweise exakte, verkleinerte Kopien der Außenkontur des Motivbereichs 130 dar, sondern können, wie in Fig. 12 gezeigt, mit abnehmender Größe zweckmäßig immer weniger Einzelheiten der Außenkontur enthalten.Then the motif area 130 was lasered with a laser energy between the reaction threshold of the marking substance and the cutting threshold of the paper 20 with concentric marking contours 132 provided, the shape of which is modeled on the contour of the motif area. The concentric marking contours do not necessarily represent exact, reduced copies of the outer contour of the motif area 130, but can, as in FIG Fig. 12 shown, with decreasing size expediently contain fewer and fewer details of the outer contour.

Bei allen gezeigten Ausgestaltungen kann innerhalb des Motivbereichs zusätzlich eine durchgehende Motivöffnung in Form eines Musters, von Zeichen oder einer Codierung vorgesehen sein. Fig. 13 zeigt dazu beispielhaft eine Abwandlung des Ausführungsbeispiels der Fig. 2, bei der innerhalb des Motivbereichs 30 eine durchgehende Motivöffnung 140, hier ebenfalls in Form eines Ahornblatts, angeordnet ist. Die Form der Motivöffnung 140 kann insbesondere, wie in Fig. 13, in einem Sinnzusammenhang mit der Form des Motivbereichs 30 und/ oder der Form des Durchsichtsbereichs 12 stehen.In all of the configurations shown, a continuous motif opening in the form of a pattern, characters or coding can also be provided within the motif area. Fig. 13 shows an example of a modification of the embodiment of FIG Fig. 2 , in which a continuous motif opening 140, here also in the form of a maple leaf, is arranged within the motif area 30. The shape of the motif opening 140 can in particular, as in FIG Fig. 13 , are related to the shape of the motif area 30 and / or the shape of the see-through area 12.

Ein Ausführungsbeispiel nach einer Weiterbildung der Erfindung, das der bei Fig. 9 beschriebenen Gestaltung verwandt ist, ist in Fig. 14 in Aufsicht und in Fig. 15 in einem Detailbereich am Übergang von Motivbereich und Durchsichtsbereich dargestellt.An embodiment according to a development of the invention, which the at Fig. 9 is related to the design described is in Fig. 14 in supervision and in Fig. 15 Shown in a detail area at the transition from the motif area and the see-through area.

Das Ausführungsbeispiel der Figuren 14 und 15 enthält einen Durchsichtsbereich 150, der außerhalb des Motivbereichs 160 sowohl ein Schnittlinienraster aus parallelen Schnittlinien 152 mit farbigem Rand 154 aufweist als auch ein Markierungslinienraster aus parallelen Markierungslinien 156, die zu den Schnittlinien 152 des Schnittlinienrasters parallel sind. Innerhalb des nicht geschnittenen Motivbereichs 160 gehen sowohl die Markierungslinien 156 als auch die Schnittlinien 152 in perfektem Passer in reine Markierungslinien 162 über, wie bereits bei Fig. 9 erläutert.The embodiment of the Figures 14 and 15 contains a see-through area 150, which outside of the motif area 160 has both a cutting line grid of parallel cutting lines 152 with a colored border 154 and a marking line grid of parallel marking lines 156 which are parallel to the cutting lines 152 of the cutting line grid. Within the non-cut motif area 160, both the marking lines 156 and the cutting lines 152 merge in perfect register into pure marking lines 162, as already in FIG Fig. 9 explained.

Im gezeigten Ausführungsbeispiel sind die beiden Linienarten 152,156 des Durchsichtsbereichs alternierend angeordnet, es sind jedoch auch andere Abfolgen, beispielsweise von je zwei Schnittlinien 152 und einer Markierungslinie 156, denkbar. Da das Markierungslinienraster keine Schnittlinien enthält, kann es auch in einem beliebigen Winkel zu dem Schnittlinienraster angeordnet sein.In the exemplary embodiment shown, the two types of lines 152, 156 of the see-through area are arranged alternately, but other sequences, for example of two cutting lines 152 and one marking line 156, are also conceivable. Since the marking line grid does not contain any cutting lines, it can also be arranged at any desired angle to the cutting line grid.

Claims (17)

  1. A data carrier (10), especially a value document, such as a banknote, identification card and the like, having a support in which a see-through region (12) is formed by a line grid composed of a plurality of parallel cutting lines (22), there being arranged within the see-through region a motif region (30) having a visual impression that is changed in reflected light and/ or transmitted light and that is developed in the form of a pattern, characters or a code, wherein the motif region is formed either
    a) by a line grid composed of a plurality of parallel cutting lines (32), such that the cutting lines of the motif region form first cutting lines, and the cutting lines (22) of the see-through region that lie outside the motif region form second cutting lines, the first and second cutting lines connecting to each other and exhibiting different cutting widths, or
    b) by an uncut region of the support (10).
  2. The data carrier according to claim 1, characterized in that the support is provided in the see-through region with a laser-modifiable marking substance, and in that the cutting lines of the see-through region that lie outside the motif region exhibit an edge region (74) that is modified by the action of laser radiation, preferably, that the support is provided with a marking substance whose visible color is changeable by the action of laser radiation, and in that the cutting lines of the see-through region that lie outside the motif region exhibit a colored edge region.
  3. The data carrier according to claim 2, characterized in that the motif region is formed by a line grid composed of a plurality of parallel cutting lines, such that the cutting lines of the motif region form first cutting lines, and the cutting lines of the see-through region that lie outside the motif region form second cutting lines, the first and second cutting lines connecting to each other, and the first cutting lines and preferably also the second cutting lines exhibiting an edge region that is modified by the action of laser radiation.
  4. The data carrier according to claim 1, characterized in that in case b) the motif region is formed by an uncut region of the support having a marking line grid composed of a plurality of parallel marking lines that connect to the cutting lines outside the motif region.
  5. The data carrier according to claim 4, characterized in that the support is provided with a marking substance whose visible color is changeable by the action of laser radiation, and in that the marking lines (156) of the motif region are colored.
  6. The data carrier according to claim 4 or 5, characterized in that the support is provided with a marking substance whose infrared-absorbing, magnetic, electric or luminescent properties are changeable by the action of laser radiation, and in that the marking lines of the motif region exhibit changed infrared-absorbing, magnetic, electric or luminescent properties compared with their surroundings.
  7. The data carrier according to claim 2, characterized in that in case b) the motif region is formed by an uncut region of the support having multiple nested marking contours of decreasing size, preferably that the support is provided with a marking substance whose visible color is changeable by the action of laser radiation, and in that the marking contours of the motif region are colored.
  8. The data carrier according to at least one of claims 1 to 7, characterized in that a through motif opening (140) is arranged within the motif region in the form of a pattern, characters or a code.
  9. The data carrier according to at least one of claims 1 to 8, characterized in that the see-through region exhibits, in addition to the line grid composed of parallel cutting lines, a marking line grid composed of a plurality of parallel marking lines, preferably that the motif region is formed by an uncut region of the support having two marking line grids each composed of a plurality of parallel marking lines, of which the marking lines of one marking line grid connect to the cutting lines outside the motif region, and the marking lines of the other marking line grid connect to the marking lines outside the motif region.
  10. The data carrier according to at least one of claims 1 to 9, characterized in that the contour of the motif region is provided with a marking contour, especially a colored marking contour.
  11. The data carrier according to at least one of claims 1 to 10, characterized in that the cutting lines exhibit a width between 0.05 mm and 1 mm, especially between 0.1 mm and 0.4 mm, and a center-to-center distance between 0.05 mm and 1 mm, especially between 0.3 mm and 0.7 mm.
  12. The data carrier according to at least one of claims 1 to 11, characterized in that the see-through region is reinforced by a foil element, preferably, that the foil element includes a line grid that, with the line grid of the see-through region, produces a moire effect.
  13. The data carrier according to at least one of claims 1 to 12, characterized in that the data carrier is a security element, a security paper or a value document.
  14. A method for manufacturing a data carrier (10) according to one of claims 1 to 13, that exhibits a support into which a see-through region (12) is to be introduced, in which a see-through region is formed in the support in that a line grid composed of a plurality of parallel cutting lines (22) is produced by laser cutting, there being produced within the see-through region a motif region (30) having a visual impression that is changed in reflected light and/or transmitted light and that is developed in the form of a pattern, characters or a code, wherein the motif region is formed either
    a) by a line grid composed of first parallel cutting lines (32) that are produced by the same cutting laser beam as the second cutting lines of the see-through region lying outside the motif region, and in that the first and second cutting lines are produced having different cutting widths by a variation in the laser parameters, especially in the laser power and/or the cutting speed, or
    b) by an uncut region of the support (10).
  15. The method according to claim 14, characterized in that the support is provided in the see-through region with a laser-modifiable marking substance, such that the cutting lines that lie outside the motif region are modified in their edge region by the action of laser radiation.
  16. The method according to claim 14 and 15, characterized in that also the cutting lines that lie within the motif region are modified in their edge region by the action of laser radiation.
  17. The method according to claim 14 or 15, characterized in that in case b) the motif region is formed by an uncut region of the support having a marking line grid having parallel marking lines that are produced by the same laser beam as the cutting lines of the see-through region that lie outside the motif region, and in that the cutting lines that lie outside the motif region and the marking lines of the motif region are produced by a variation in the laser parameters, especially in the laser power and/or the cutting speed, or that the motif region is formed by an uncut region of the support having multiple nested marking contours of decreasing size.
EP09799020.4A 2008-12-22 2009-12-09 Data carrier with transparent area Active EP2379339B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008064395 2008-12-22
DE102009011424A DE102009011424A1 (en) 2008-12-22 2009-03-03 Disk with transparency
PCT/EP2009/008776 WO2010072329A1 (en) 2008-12-22 2009-12-09 Data media having inspection area

Publications (2)

Publication Number Publication Date
EP2379339A1 EP2379339A1 (en) 2011-10-26
EP2379339B1 true EP2379339B1 (en) 2021-09-08

Family

ID=42220970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09799020.4A Active EP2379339B1 (en) 2008-12-22 2009-12-09 Data carrier with transparent area

Country Status (8)

Country Link
EP (1) EP2379339B1 (en)
BR (1) BRPI0918341B1 (en)
CA (1) CA2748091A1 (en)
DE (1) DE102009011424A1 (en)
ES (1) ES2897514T3 (en)
RU (1) RU2508203C2 (en)
WO (1) WO2010072329A1 (en)
ZA (1) ZA201105340B (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009048145A1 (en) 2009-10-02 2011-04-07 Giesecke & Devrient Gmbh Disk with window
DE102010047949A1 (en) 2010-10-08 2012-04-12 Giesecke & Devrient Gmbh Disk with cut lines
DE102010047950A1 (en) 2010-10-08 2012-04-12 Giesecke & Devrient Gmbh Security paper with watermark
DE102010053052A1 (en) 2010-12-01 2012-06-06 Giesecke & Devrient Gmbh Data carrier with marking
DE102013019943A1 (en) 2013-11-27 2015-05-28 Giesecke & Devrient Gmbh Safety element with magnetically orientable magnetic pigments and process for its production
DE102014016249A1 (en) 2014-11-04 2016-05-04 Giesecke & Devrient Gmbh Data carrier with see-through security element
DE102015003785A1 (en) 2015-03-23 2016-09-29 Giesecke & Devrient Gmbh Method for producing a window in a paper substrate with a security element
GB2537830B (en) 2015-04-24 2017-05-31 De La Rue Int Ltd Improvements in security substrates
DE102015009164A1 (en) 2015-07-14 2017-01-19 Giesecke & Devrient Gmbh Disk with breakthrough area
DE102016002120A1 (en) 2016-02-24 2017-08-24 Giesecke & Devrient Gmbh Security feature and method for its manufacture
DE102016004424A1 (en) 2016-04-12 2017-10-12 Giesecke+Devrient Currency Technology Gmbh Laser coating with effect pigments
DE102016006929A1 (en) 2016-06-06 2017-12-07 Giesecke+Devrient Currency Technology Gmbh Security feature and method for its manufacture
DE102016009437A1 (en) 2016-08-03 2018-02-08 Giesecke+Devrient Currency Technology Gmbh Security element and method for producing a security element
DE102016009512A1 (en) * 2016-08-04 2018-02-08 Giesecke+Devrient Currency Technology Gmbh Security element, method for producing a security element and value document with such a security element
DE102016014662A1 (en) 2016-12-09 2018-06-14 Giesecke+Devrient Currency Technology Gmbh value document
DE102016014845A1 (en) 2016-12-13 2018-06-14 Giesecke+Devrient Currency Technology Gmbh Laser cutting and laser staining of security documents
DE102018005990A1 (en) 2018-07-27 2020-01-30 Giesecke+Devrient Currency Technology Gmbh Method for producing a security feature using laser radiation
DE102019006255A1 (en) 2019-09-04 2021-03-04 Giesecke+Devrient Currency Technology Gmbh Security paper and value document protected against splitting

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4343885A (en) 1978-05-09 1982-08-10 Dynachem Corporation Phototropic photosensitive compositions containing fluoran colorformer
AU612143B2 (en) 1987-03-19 1991-07-04 Xytronyx, Inc. Systems for the visualization of exposure to ultraviolet radiation and for the utilization of ultraviolet radiation to effect color changes
DE4243987C2 (en) * 1992-12-23 2003-10-09 Gao Ges Automation Org ID cards with visually visible authenticity
CA2164629C (en) * 1993-06-08 2001-04-10 Wayne Kevin Jackson Embossing banknotes or the like with security devices
WO1999051446A1 (en) * 1998-04-03 1999-10-14 I.D. Tec, S.L. Multilayer polymer structure and process for producing protection covers for high security identity documents
GB0016356D0 (en) * 2000-07-03 2000-08-23 Optaglio Ltd Optical structure
GB0114266D0 (en) 2001-06-12 2001-08-01 Ciba Sc Holding Ag Laser marking method
DE10237059A1 (en) * 2002-08-09 2004-02-26 Giesecke & Devrient Gmbh Valuable data support, e.g. a banknote, has half-tone illustrations or motifs to prevent copying, the grid lines of which have widths that vary on only one side only to improve copying protection
ATE406421T1 (en) 2003-07-30 2008-09-15 Datalase Ltd LASER MARKABLE COMPOSITIONS
US7021549B2 (en) * 2004-06-30 2006-04-04 Illinois Tool Works, Inc. Laser markable variable data heat transfer label and marking system
DE102005039113A1 (en) * 2005-08-18 2007-02-22 Zintzmeyer, Jörg Microrefraction
DE102005048033B4 (en) * 2005-10-06 2010-01-21 Bundesdruckerei Gmbh The security document
EP1845496A1 (en) * 2006-04-12 2007-10-17 Trüb AG Security element for a data carrier, data carrier comprising such security element, sub-assembly and method for manufacturing a data carrier
DE102006052413A1 (en) * 2006-11-07 2008-05-08 Giesecke & Devrient Gmbh safety film
DE102007009646A1 (en) * 2007-02-26 2008-08-28 Giesecke & Devrient Gmbh Holographic grid image for security element of e.g. bank note, has grid fields which are achromatic grid fields, and formed of sub-ranges overlapping with one another, where dimension of sub-ranges lies below resolution limit of naked eye

Also Published As

Publication number Publication date
ZA201105340B (en) 2012-03-28
ES2897514T3 (en) 2022-03-01
BRPI0918341B1 (en) 2021-03-09
RU2011129698A (en) 2013-01-27
CA2748091A1 (en) 2010-07-01
RU2508203C2 (en) 2014-02-27
BRPI0918341A2 (en) 2016-09-06
WO2010072329A1 (en) 2010-07-01
EP2379339A1 (en) 2011-10-26
DE102009011424A1 (en) 2010-07-01

Similar Documents

Publication Publication Date Title
EP2379339B1 (en) Data carrier with transparent area
EP2164707B1 (en) Security feature and method for producing the same
EP2580069B1 (en) Data carrier comprising feature region and method
EP2448767B1 (en) Security element, and method for the production thereof
EP1525102A1 (en) Security document
EP3215371B1 (en) Data carrier with see-through security element
EP2448766B1 (en) Security element, and method for the production thereof
EP2439074B1 (en) Security paper with watermark
EP3243669B1 (en) Production method of a security element
EP2516175A1 (en) Security element and method for the manufacture thereof
EP3291999B1 (en) Security feature and method for producing the same
WO2018127269A2 (en) Security element comprising a lasered surface
EP4037913B1 (en) Method for producing a security paper and security paper obtainable by said method
EP4219185A1 (en) Film, film strip, valuable document and relative production method
EP3072703B1 (en) Method of producing a window in a paper substrate with a security element
EP2965918B1 (en) Data carrier with tactile relief structure

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20110722

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20150428

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 502009016392

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: B42D0015100000

Ipc: B42D0025430000

RIC1 Information provided on ipc code assigned before grant

Ipc: B42D 25/29 20140101ALI20190508BHEP

Ipc: B42D 25/43 20140101AFI20190508BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20210412

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1428267

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210915

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502009016392

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211208

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211208

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211209

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2897514

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20220301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220108

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220110

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20220119

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502009016392

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502009016392

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed

Effective date: 20220609

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20211209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20211231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211209

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211209

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211209

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1428267

Country of ref document: AT

Kind code of ref document: T

Effective date: 20211209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20091209

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230520

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20240129

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20231219

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221210

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210908

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221210