Data carrier with motif images which are visible from opposite faces, and corresponding production method

Abstract

The invention relates to a data carrier (10) with two different motif images which are visible from opposite faces of the data carrier, namely a front-face motif (22) and a rear-face motif (32). According to the invention, the data carrier (10) has a multilayer construction with an upper motif layer (52), a lower motif layer (62), and an intermediate layer (40) which is arranged between the motif layers (52, 62) and which is translucent at least in some regions. Furthermore, a respective sub-motif (22A, 22B) of the front-face motif (22) is arranged in the upper and lower motif layer (52, 62), wherein the two sub-motifs (22A, 22B) complement each other so as to form the front-face motif (22) when the data carrier is viewed from the front face and / or each sub-motif (32A, 32B) of the rear-face motif (32) is arranged in the upper and lower motif layer (52, 62), and the two sub-motifs (32A, 32B) complement each other so as to form the rear-face motif (32) when the data carrier is viewed from the rear face. Each of the upper and lower motif layers (52, 62) is made of a laser-modified printing ink, the motif information thereof which is produced by laser application and which forms the front-face motif (22) and the rear-face motif (32) is only visible when viewed from above and not when viewed in transmitted light.

Description

[0001] Data carrier with motif images visible from opposite sides and associated manufacturing process

[0002] The invention relates to a data carrier, in particular a value or security document, with two different motif images visible from opposite sides of the data carrier, as well as an associated manufacturing method.

[0003] Data storage devices, such as valuables or identification documents, as well as other valuable items such as branded goods, are often provided with security features for security purposes. These allow verification of the authenticity of the data storage device and also serve as protection against unauthorized reproduction. However, all security features carry the risk of misuse through falsification and / or total forgery of the security feature.

[0004] Based on this, the invention is based on the object of providing a data carrier of the type mentioned above with a high level of forgery security and an attractive visual appearance.

[0005] This object is achieved by the features of the independent claims. Further developments of the invention are the subject of the dependent claims.

[0006] The invention provides a data carrier with two different motif images visible from opposite sides of the data carrier. For ease of reference and differentiation, the two motif images are referred to as the front motif and the back motif in this description. However, this is not a limitation, as both motif images can represent any desired, albeit different, information.

[0007] The data carrier has a multi-layer structure with an upper motif layer, a lower motif layer and an intermediate layer arranged between the motif layers, which is at least partially translucent.

[0008] It is provided that one partial motif of the front-side motif is arranged in the upper and lower motif layer, and the two partial motifs complement each other when viewing the data carrier from the front to the front motif, and / or that one partial motif of the back-side motif is arranged in the upper and lower motif layer, and the two partial motifs complement each other when viewing the data carrier from the back to the back motif. At least one of the two motif images is therefore divided into at least two partial motifs in the manner mentioned, wherein, in particularly advantageous embodiments, both motif images are divided accordingly into partial motifs.

[0009] The front and back motifs are formed using a laser-modified printing ink whose motif information, generated by laser exposure, is only visible when viewed from above, not through the print. In other words, the front motif is only visible when viewed from above, from the side of the upper motif layer, while the back motif is only visible when viewed from above, from the side of the lower motif layer.

[0010] The division of at least one motif image into two different layers provides the data carrier with a high level of protection against falsification or total forgery, since tampering with the layer structure would destroy the overall impression of the divided motif image. The partial images, separated by the intermediate layer and thus located on different layers, are created by laser irradiation according to the invention and are therefore perfectly aligned with each other.

[0011] Furthermore, by arranging the partial images on different levels, a depth effect can be created that is very difficult to imitate in any other way.

[0012] Preferably, laser exposure creates areas in the laser-modified printing ink with different reflectivity but essentially unchanged opacity, which form the aforementioned motif information of the front-side motif and the back-side motif. In particular, the reflectivity in the laser-exposed areas of the printing ink can be increased, so that these areas appear brighter in incident light than the non-exposed areas.

[0013] In an advantageous embodiment, the laser-modified printing ink is formed by laser exposure to a laser-modifiable printing ink, namely a printing ink provided with platelet-shaped, multilayer interference pigments, in which an outer layer of the interference pigments can be modified by laser exposure, and an outer layer of the interference pigments is modified, in particular made transparent, by the laser exposure in the areas containing motif information of the front-side motif and / or the back-side motif. The platelet-shaped, multilayer interference pigments of the printing ink are preferably aligned substantially parallel to the layer surface in the upper and lower motif layers.

[0014] The interference pigments advantageously comprise a central reflective layer, two dielectric layers surrounding the central reflective layer, and two outer, partially transparent layers. Advantageously, in the areas containing motif information of the front-side motif and / or the back-side motif, one or both outer layers of the interference pigments are modified for laser exposure, in particular made transparent, while the central reflective layer remains unchanged.

[0015] The layer structure of the unmodified interference pigments is preferably symmetrical, i.e. the materials and layer thicknesses of the dielectric layers and the semi-transparent layers are the same on both sides of the reflection layer.

[0016] The middle reflective layer is preferably a metal layer, for example, made of aluminum or silver, especially an opaque metal layer. The transmission of the outer, partially transparent layers is advantageously between 30% and 65% in the unmodified state, and preferably below 30%, especially below 10%, in the laser-modified state. The outer, partially transparent layers can be made of chromium.

[0017] The unmodified interference pigments advantageously exhibit a color-shift effect or a fixed color. By altering the outer layer of the interference pigments, the color-shift effect or the fixed color changes, so that the laser-exposed area appears with a different color impression in reflection. For example, the outer layer can be made largely or completely transparent by laser exposure, so that the bright reflection of the middle reflective layer dominates there, thus creating a brighter color impression than that produced by the color-shift effect or the fixed color. Since the middle reflective layer remains unchanged during laser exposure, the opacity of the interference pigments and thus also of the printing ink remains virtually unchanged.

[0018] It is advantageous for the upper and lower motif layers to be formed using the same laser-modified printing ink. The unmodified areas of both motif layers therefore appear with the same color impression.

[0019] The upper and lower motif layers are preferably offset from one another; in particular, the upper and lower motif layers are designed to overlap one another in projection or to directly abut one another in projection. In a further advantageous embodiment, the upper motif layer is arranged completely within, but not congruent with, the lower motif layer. Conversely, the lower motif layer can be arranged completely within, but not congruent with, the upper motif layer. In the context of this description, "projection" means a projection perpendicular to the layer plane of the motif layers or the entire data carrier.

[0020] Advantageously, the upper and lower motif layers are opaque.

[0021] In an advantageous embodiment, the intermediate layer is transparent in the area of ​​the motif images. In particular, the intermediate layer is formed by an opaque core layer, which is provided with a transparent insert in the area of ​​the motif images. The opaque core layer can also be composed of several sublayers. The intermediate layer advantageously has a thickness of more than 100 μm, in particular a thickness between 100 μm and 500 μm. The optical properties of the insert can be further modified to achieve additional effects.

[0022] Preferably, the upper and lower motif layers are each covered with a transparent cover film. In particular, the upper and lower motif layers are printed onto the respective covering cover film. This results in a further advantage of a large surface area available for each motif image. Even if the laser-modifiable printing inks used for the motif layers have a relatively weak bond to the adjacent cover layers, so that the practical realizable area of ​​each motif layer is limited, dividing the image motifs into two levels can double the available surface area for each image.

[0023] In addition, the division, especially when using dot and / or line grids, has the advantageous side effect of reducing the printed area in relation to the unprinted area, so that the laser behavior of the motif layers is improved during subsequent laser exposure and, in particular, so-called cracking can be reduced or even completely avoided.

[0024] The motif information of at least one of the motif images advantageously contains a personalization, in particular a portrait and / or a signature. The data carrier represents, in particular, a valuable or security document and is advantageously an identification card, in particular an ID card, a data page for an ID document, a bank card, a credit card, or a driver's license.

[0025] The invention also includes a method for producing a data carrier of the type mentioned, in which the data carrier is formed with a multi-layer structure with an upper motif layer, a lower motif layer and an intermediate layer arranged between the motif layers, which is at least partially translucent, a partial motif of the front-side motif is arranged in the upper and lower motif layers and the two partial motifs complement each other when viewing the data carrier from the front to the front motif, and / or a partial motif of the back-side motif is arranged in the upper and lower motif layers and the two partial motifs complement each other when viewing the data carrier from the back to the back motif, and the upper and lower motif layers are each formed by a laser-modified printing ink,in which, by laser exposure, motif information forming the front-side motif and the back-side motif is generated, which is only visible when viewed from above, but not when viewed through. In an advantageous process, a laser-modifiable printing ink is arranged on opposite sides of the intermediate layer to generate the motif images, and the motif information of the front-side motif is generated in the upper and / or lower motif layers by laser exposure from the side of the upper motif layer, and the motif information of the back-side motif is generated by laser exposure from the side of the lower motif layer.

[0026] In particular, the motif information of the partial images of the front and / or back motifs separated by the intermediate layer is generated by laser irradiation in the same process step. The partial images are therefore perfectly aligned with each other.

[0027] Advantageously, the method provides that the laser-modifiable printing ink of the upper and lower motif layer is printed onto a transparent cover film, the printed cover films are bonded to the intermediate layer, and subsequently the laser-modifiable printing ink is exposed to laser radiation in order to generate the motif information of the front-side motif and the back-side motif in the upper and / or lower motif layer.

[0028] Further embodiments and advantages of the invention are explained below with reference to the figures, in which a true-to-scale and true-to-proportion reproduction has been omitted in order to increase clarity.

[0029] 1 shows schematically an identification card according to the invention, wherein (a) shows the appearance of the card when viewed from the front and (b) shows the appearance when viewed from the back,

[0030] Fig. 2 schematically shows the layer structure of the identification card in the window area along the line II-II of Fig. 1,

[0031] Fig. 3 shows schematically a laser-modifiable and partially already laser-modified printing ink for use for the motif layers of the identification card of Figs. 1 and 2,

[0032] Fig. 4 shows an identification card according to another embodiment of the invention with overlapping motif layers, and

[0033] Fig. 5 shows an identification card according to a further embodiment of the invention, in which the upper motif layer is arranged completely within, but not congruent with, the lower motif layer.

[0034] The invention will now be explained using the example of identification cards. Figure 1 shows a schematic representation of an identification card 10, such as an ID card, bank card, credit card, or driver's license. Figure 1(a) shows the appearance of the card when viewed from the front 12 of the card, and Figure 1(b) shows the appearance when viewed from the back 14 of the card.

[0035] A window area 16 is formed in the identification card 10, in which different motif images 22, 32 are visible when viewed from the front (Fig. 1(a)) and the back (Fig. 1(b)). In the exemplary embodiment, the front motif 22 represents a passport photo 24 of the cardholder 10, visible against a solid-color background 26. For example, in black and white, the passport photo 24 appears silvery bright against a relatively dark, blue, hexagonal background 26.

[0036] The reverse motif 32 is a graphic motif 34, for example, a national emblem combined with a reproduction of the card number, which is visible against a solid-colored background 36. In the illustrated example, the graphic motif 34 also appears light silver against a hexagonal background 36, which is also blue.

[0037] While the backgrounds 26, 36 of the two motifs are congruent in the shape of a hexagon and are visible from both sides with the same blue color, the front motif 22 with the passport photo 24 is only visible when viewed from the front, and the back motif 32 with the graphic motif 34 is only visible when viewed from the back. From the opposite side, the front and back motifs are not visible and therefore do not influence or interfere with each other.

[0038] As a further special feature, each of the two motif images 22, 32 consists of two partial motifs 22A, 22B and 32A, 32B, respectively, which are arranged at different heights inside the card 10, as can be seen by the viewer, and which together form the complete motif image 22 or 32.

[0039] The point where the sub-motifs meet is indicated in Figures 1(a) and 1(b) by a dashed line 18. This dashed line is for illustrative purposes only and is not part of the motif images. The motif images 22, 32 show a depth effect, whereby the viewer, for example, upon movement, in particular upon tilting of the card 10, recognizes through a slight mutual displacement of the sub-motifs that the sub-motifs are not arranged in the same plane, but at two different heights.

[0040] The structure and creation of the described appearances of the identification card 10 when viewed from the front and back will now be explained in more detail with reference to Fig. 2, which schematically shows the layered structure of the identification card 10 in the window area along line II-II of Fig. 1. For clarity, the various elements of the card are shown in an exploded view. In the figure, the front 12 of the card is shown at the top, the back 14 at the bottom.

[0041] The identification card 10 comprises a central core layer 40, which is equipped with a transparent insert 42 in the window area 16. The core layer 40 itself can consist of several sublayers, for example, a first, opaque core film 44, a second, transparent or opaque core film 46, and a third, opaque core film 48. The shape and size of the transparent insert 42 define the shape and size of the window area 16 of Fig. 1.

[0042] The middle core layer 40 is covered on both the front and back with a transparent cover film 50 or 60. In the window area 16, an upper motif layer 52 is provided between the middle core layer 40 and the upper cover film 50, and a lower motif layer 62 made of a laser-modified printing ink is provided between the core layer 40 and the lower cover film 60. The aforementioned printing ink has the special property that the printed motif layers, in the unmodified state of the printing ink, can be locally modified by laser exposure from both the front and back of the card in such a way that their appearance in reflected light, i.e. from the respective side of exposure, becomes brighter, but their opacity in transmitted light remains unchanged.

[0043] For a more detailed explanation, Figure 3 schematically shows a concrete example of such a laser-modifiable or partially laser-modified printing ink 100. In the printing ink 100, a plurality of platelet-shaped interference pigments 110 are embedded in a binder 102, which align themselves substantially parallel to the carrier surface when the printing ink 100 is printed onto a carrier.

[0044] The platelet-shaped interference pigments 110 have a five-layer structure and consist of a central reflective layer 112, two dielectric layers 1140, 114U surrounding the central reflective layer 112, and two outer, partially transparent layers 1160, 116U. The layers are coordinated with one another in such a way that the interference pigments exhibit a color shift effect from both sides, for example, from magenta to green or from gold to green. Depending on the choice of materials and layer thicknesses, other color shift effects or other color impressions can also be created. In the present case, a symmetrical layer structure with identical dielectric layers 1140, 114U and identical partially transparent layers 1160, 116U is assumed, so that the same color shift effect is visible on both sides. The top / bottom orientation of the pigments 110 in the printing ink 100 is then irrelevant.By applying a suitable laser to the printing ink 100, it can be achieved that only the partially transparent layers 1160 or 116U of the interference pigments 110 facing the direction of exposure are affected. In particular, it has been found that the light transmittance of the partially transparent layer of a pigment can be increased by laser exposure to such an extent that the color shift effect on the exposure side practically disappears. In reflected light, the observer then sees the lighter reflection color of the central reflection layer 112 instead of the relatively darker interference color of the pigment, which typically produces a silvery, glossy color impression.

[0045] The modification is not visible from the opposite side of the pigment, since the color impression there is determined by the layer sequence of reflective layer, dielectric layer, and unchanged semi-transparent layer. Furthermore, the opacity of the interference pigments 110 is essentially determined by the opacity of the unchanged reflective layer 112, so the opacity of the interference pigments is also not changed by the laser exposure.

[0046] In Fig. 3, the left part of the figure shows a region of a motif layer 52 or 62 produced with printing ink 100, in which no laser modification of the interference pigments 110 has taken place. In the exemplary embodiment, the layers of pigments 110 are somewhat coordinated with one another such that, when viewed vertically in incident light from both sides, a blue color impression is perceptible. This corresponds to the situation in a region of the motif layers 52, 62 in which the dark, blue background 26 or 36 is visible from both sides. The middle part of Fig. 3 shows a region of the motif layer 52 or 62 in which the interference pigments 110 were modified only from the front side by laser exposure 104. As described, the upper partially transparent layer 116OT becomes practically completely transparent due to the laser exposure, so that the bright reflection color of the reflection layer 112 dominates.The modified area therefore presents a bright, silvery color impression when viewed from the front. This corresponds to the situation in an area of ​​the motif layers 52, 62, where a bright part of the passport photo 24 is visible on the front and the dark, blue background 36 is visible on the back.

[0047] Finally, the right part of Fig. 3 shows an area of ​​the motif layer 52 or 62 in which the interference pigments 110 have been modified from the back by laser exposure 106. In this case, the laser exposure renders the lower, partially transparent layer 116UT virtually completely transparent, resulting in a bright, silvery color impression when viewed from the back. This corresponds to the situation in an area of ​​the motif layers 52, 62 in which a bright part of the graphic motif 34 is visible on the back and the dark, blue background 26 is visible on the front.

[0048] It is understood that there may also be regions of the motif layer 52 or 62 in which the interference pigments 110 have been modified from both sides by laser exposure 104, 106. In this case, both the upper and the lower partially transparent layers are practically completely transparent, so that a light, silvery color impression is visible on both sides. This corresponds to the situation in a region of the motif layers 52, 62 in which a light part of the passport photo 24 is visible on the front and a light part of the graphic motif 34 is visible on the back. Returning to the illustration in Fig. 2, the motif layers 52, 62 formed by the printing ink 100 are not congruent, but offset from one another. In the exemplary embodiment in Fig. 2, the motif layers 52, 62 are specifically arranged such that they directly adjoin one another in projection.

[0049] During personalization, the card 10 was exposed to laser radiation vertically from the front side 12 in the window area 16, locally modifying both the upper motif layer 52 and the lower motif layer 62, thereby creating the front-side motif 22. The simultaneous modification of the two motif layers 52, 62 is possible because both the upper cover layer 50 and the insert 12 are transparent to the modifying laser radiation, and the motif layers 52, 62 are arranged next to one another from the front-side exposure direction. Therefore, during laser exposure, a first partial motif 22A is created in the upper motif layer 52 and a second partial motif 22B is created in the lower motif layer 62 from the front-side motif 22.

[0050] When viewed vertically from the front, the partial motifs 22A, 22B complement each other in precise registration to form the overall motif 22. Depending on the thickness of the middle core layer 40, the viewer can perceive, upon slight movement or tilting of the card 10, that the two partial motifs 22A, 22B move relative to one another and are therefore arranged at different heights within the card 10. With relatively large layer thicknesses of the middle core layer 40, for example up to 500 μm, this displacement of the partial motifs can be very clearly perceptible. However, with small layer thicknesses and / or with a suitable design of the motif images, the relative displacement may also be barely perceptible or hidden for the viewer.In the former case, the depth effect serves as an additional, characteristic and visually verifiable feature of authenticity, while in the latter case, the additional security provided by the arrangement of the motif images in different levels represents a hidden feature of authenticity.

[0051] As described in connection with Fig. 3, the modification of the motif layers 52, 62 introduced from the front side is only visible when viewed from the front side 12, but not when viewed from the back side 14.

[0052] Analogous to the creation of the front motif, during personalization, card 10 was exposed to laser radiation vertically from the back 14 in the window area 16. Both the upper motif layer 52 and the lower motif layer 62 were locally modified, thereby creating the back motif 24. Simultaneous modification of the motif layers 52, 62 is possible because both the lower cover layer 60 and the insert 12 are transparent to the modifying laser radiation, and the motif layers 52, 62 are arranged next to one another from the back exposure direction. Therefore, a first partial motif 32A is created from the back motif 32 in the upper motif layer 52 and a second partial motif 32B is created in the lower motif layer 62.

[0053] As with the front view, the partial motifs 32A, 32B also complement each other in precise registration to form the overall motif 32 when viewed vertically from the back, and the viewer can recognize by moving or tilting the card 10 that the partial motifs 32A, 32B are arranged at different heights inside the card 10. The modification of the motif layers 52, 62 introduced from the back is not recognizable when viewed from the front 12.

[0054] The identification card 10 offers excellent counterfeit protection because if one of the cover layers 50, 60 with the printed motif layers 52, 62 is tampered with, the two partial motifs of the motif images 22, 32 are separated from each other, thus destroying their overall appearance. This makes tampering with the layer structure, for example, by milling off the information on the back of the card, immediately recognizable on the front. Furthermore, the simultaneous laser personalization of the motif layers 52, 62 on two levels and in a single step makes it impossible to repair the destroyed motif images.

[0055] Figure 4 shows an identification card 70 according to a further embodiment of the invention. The structure of the identification card 70 largely corresponds to the structure of the card 10 in Fig. 2, but differs in the design of the motif layers 52, 62. The upper motif layer 52 and the lower motif layer 62 are offset from one another in the embodiment of Fig. 4 such that the upper and lower motif layers 52, 62 overlap one another in projection. In the overlap region 72, the upper motif layer 52 is essentially only visible when viewed from the front, and the lower motif layer 62 is essentially only visible when viewed from the back. The overlap ensures that when the data carrier is viewed at an angle, no transparent gap can be seen between the respective partial images of the motif images 22, 32, but that the dark background 26, 36 appears continuous from both viewing directions.In the further embodiment of Fig. 5, the structure of the identification card 80 also largely corresponds to the structure of the card 10 of Fig. 2 and differs only in the design of the motif layers 52, 62.

[0056] In the embodiment of Fig. 5, the upper motif layer 52 is provided in an area 82 which, in projection, is arranged completely within, but not congruent with, the lower motif layer 62. In this embodiment, only the front motif 22 consists of two partial motifs 22A, 22B at different heights, while the back motif

[0057] 32 is formed only at a single height level, namely in the lower motif layer. The described protective effect is also realized in this embodiment, since the front motif 22 is destroyed by the removal of the back information of card 80.

[0058] List of reference symbols

[0059] Identification card

[0060] Card front

[0061] Card back

[0062] Window area

[0063] Dividing line sub-motifs

[0064] Front motif A, 22B partial motifs

[0065] Passport photo background backside motif A, 32B partial motifs graphic motif background core layer transparent insert opaque core film transparent or opaque core film opaque core film transparent cover film upper motif layer transparent cover film lower motif layer 0 printing ink 2 binder 4, 106 laser treatment 0 interference pigments 2 middle reflection layer 1140, 114U upper or lower dielectric layer

[0066] 1160, 116U upper or lower partially transparent layer

[0067] 116OT transparent upper outer layer

[0068] 116UT transparent lower outer layer

Claims

P a t e n t a n s p r ü c h e 1. Data carrier, in particular a valuable or security document, with two different motif images visible from opposite sides of the data carrier, namely a front motif and a back motif, wherein the data carrier has a multi-layer structure with an upper motif layer, a lower motif layer and an intermediate layer arranged between the motif layers, which is at least partially transparent, wherein a partial motif of the front motif is arranged in the upper and lower motif layers and the two partial motifs combine to form the front motif when the data carrier is viewed from the front, and / or a partial motif of the back motif is arranged in the upper and lower motif layers and the two partial motifs combine to form the back motif when the data carrier is viewed from the back, and wherein the upper and lower motif layers are each formed by a laser-modified printing ink.whose motif information, generated by laser exposure and forming the front and back motifs, is only visible from above, but not from behind.

2. Data carrier according to claim 1, characterized in that areas with different reflectivity but essentially unchanged opacity are created in the laser-modified printing ink by laser exposure, which form the said motif information of the front side motif and the back side motif.

3. Data carrier according to claim 1 or 2, characterized in that the laser-modified printing ink is formed by laser exposure of a laser-modifiable printing ink, namely a printing ink provided with platelet-shaped, multi-layered interference pigments, in which an outer layer of the interference pigments can be modified by laser exposure, and an outer layer of the interference pigments in the areas with motif information of the front motif and / or the back motif is modified, in particular made transparent, by laser exposure.

4. Data carrier according to claim 3, characterized in that the interference pigments comprise a middle reflective layer, two dielectric layers surrounding the middle reflective layer and two outer, semi-transparent layers.

5. Data carrier according to claim 4, characterized in that in the areas with motif information of the front side motif and / or the back side motif, one or both outer layers of the interference pigments are modified by the laser exposure, in particular made transparent, while the middle reflective layer remains unchanged.

6. Data carrier according to at least one of claims 1 to 5, characterized in that the upper and lower motif layers are formed by the same laser-modified printing ink.

7. Data carrier according to at least one of claims 1 to 6, characterized in that the upper and lower motif layers are offset from each other, in particular that the upper and lower motif layers are designed to overlap each other in projection or to directly abut each other in projection.

8. Data carrier according to at least one of claims 1 to 7, characterized in that the upper and lower motif layers are opaque.

9. Data carrier according to at least one of claims 1 to 8, characterized in that the intermediate layer is transparent in the area of ​​the motif images, in particular that the intermediate layer is formed by an opaque core layer which is equipped with a transparent insert in the area of ​​the motif images.

10. Data carrier according to at least one of claims 1 to 9, characterized in that the intermediate layer has a thickness above 100 µm, in particular a thickness between 100 µm and 500 gm.

11. Data carrier according to at least one of claims 1 to 10, characterized in that the upper and lower motif layers are each covered with a transparent cover film.

12. Data carrier according to at least one of claims 1 to 11, characterized in that the motif information of at least one of the motif images contains a personalization, in particular a portrait and / or a signature.

13. Data carrier according to at least one of claims 1 to 12, characterized in that the data carrier is an identification card, in particular an identity card, a data page for an identity document, a bank card, a credit card or a driver's license.

14. A method for manufacturing a data carrier according to any one of claims 1 to 13, wherein the data carrier is formed with a multilayer structure comprising an upper motif layer, a lower motif layer, and an intermediate layer arranged between the motif layers that is at least partially transparent, wherein a partial motif of the front-side motif is arranged in each of the upper and lower motif layers, and the two partial motifs combine to form the front-side motif when the data carrier is viewed from the front, and / or a partial motif of the back-side motif is arranged in each of the upper and lower motif layers, and the two partial motifs combine to form the back-side motif when the data carrier is viewed from the back, and The upper and lower motif layers are each formed by a laser-modified printing ink, in which laser exposure generates motif information forming the front and back motifs, which is only visible in top view, but not in through view.

15. Method according to claim 14, characterized in that, for the production of the motif images, a laser-modifiable printing ink is arranged on opposite sides of the intermediate layer, and the motif information of the front motif is produced in the upper and / or lower motif layer by laser exposure from the side of the upper motif layer and the motif information of the back motif is produced by laser exposure from the side of the lower motif layer.

16. Method according to claim 14 or 15, characterized in that the laser-modifiable printing ink of the upper and lower motif layers is printed onto a transparent cover film, the printed cover films are joined to the intermediate layer, and subsequently the laser-modifiable printing ink is subjected to laser radiation to generate the motif information of the front motif and the back motif in the upper and / or lower motif layer.

Images