EP3322595B2 - Data carrier having a perforated portion - Google Patents

Description

The invention relates to a data carrier, in particular a document of value or a security paper, comprising a data carrier substrate having a breakthrough area with a front and a back, the front of the data carrier substrate being provided with a film security element in the breakthrough area.

Data carriers, especially valuable documents, are usually equipped with security elements for security purposes, which allow the authenticity of the data carrier to be checked and at the same time serve as protection against unauthorized reproduction of the data carrier. Possible security elements include, for example, film security elements which have a film substrate or plastic substrate and are applied to the data carrier using an adhesive layer.

To increase security against forgery, it is known to combine such film security elements with continuous openings in the valuable documents.

The WO 95/10420 A1 describes a document of value in which the carrier is provided with a window-like opening, which is closed with a cover film that is at least partially transparent, the cover film being able to be provided with additional security features, for example diffraction structures, particularly in the area of the window-like opening.

The WO 2005/025891 A2 describes a data carrier with a foil security element, wherein both the foil security element and the data carrier have a breakthrough area; The opening areas preferably overlap at least partially and particularly preferably they are congruent. In a further variant, the opening area in the data carrier is covered with a further film on the side facing away from the data carrier carrying the film security element.

The WO 2010/000432 A1 describes a document of value with an opening that is closed on one side with a translucent film. To increase security against forgery, both the top and bottom of the document of value are covered with a translucent coating, which is preferably carried out over the entire surface. Preferably, the coatings are each extruded or laminated independently of one another.

The WO 2011/015622 A1 describes a document of value with an opening which is closed on one side with an at least partially translucent or transparent film, with a coating being located on the side of the document of value opposite the film in the area of the opening and essentially in the area of the film surface, the coating being within the Opening is not present or essentially not present.

The WO 2014/108329 A1 describes a process for producing an endless paper web for the production of security and valuable documents. The paper web is first provided with a continuous opening. A film with security features to be applied to the paper web is then applied in precise register. Experimental studies in which the circulation stability of valuable documents was simulated by bringing a test substrate similar to a valuable document into contact with dirt and mechanical stress led to the result that the film applied above a continuous opening in the test substrate is subject to rapid destruction under extreme test conditions.

document WO 2006/056089 A2 discloses a data carrier according to the preamble of claim 1.

Proceeding from this, the present invention is based on the object of developing a generic data carrier in such a way that the disadvantages of the prior art are eliminated and, in particular, protection against counterfeiting is further increased.

This task is solved by the combinations of features defined in independent claims 1 and 7. Further developments of the invention are the subject of the subclaims.

Summary of the invention

Data carrier according to independent claim 1 or 7. The second appearance of the film security element, which can be seen in transmitted light, can in particular be in a meaningful connection with the opening area motif of the data carrier substrate. Furthermore, the second appearance of the film security element, which can be seen in transmitted light, can produce a combination image together with the opening area motif of the data carrier substrate.

Detailed description of the invention

For the purposes of this invention, viewing in incident light means illuminating the security element from one side and viewing the security element from the same side. Viewing in reflected light therefore occurs, for example, when the front of the security element is illuminated and also viewed.

For the purposes of this invention, viewing in transmitted light means illuminating a security element from one side and viewing the security element from another side, in particular the opposite side. Viewing in transmitted light therefore occurs, for example, when the back of the security element is illuminated and the front of the security element is viewed. The light thus shines through the security element.

The document of value mentioned in the present description can be, for example, a banknote, in particular a paper banknote, a polymer banknote or a film composite banknote, a share, a bond, a certificate, a voucher, a check, a high-quality admission ticket, but also a Entitlement card, ID card or passport personalization page.

The film security element mentioned in the present description can be, for example, a patch or a label, an (endless) strip or an (endless) thread.

According to the invention, it is provided to form the breakthrough area of the data carrier substrate by means of a plurality of recesses which break through the data carrier substrate and which together form a breakthrough area motif. It is preferred that the breakthrough recesses forming the breakthrough region motif are created in the data carrier substrate by the action of laser radiation on the data carrier substrate (i.e. by means of laser cutting).

The data carrier substrate is in particular a paper substrate or a paper-like substrate.

The opening area motif can be in the form of a pattern or an image, in the form of characters or in the form of a coding.

In a preferred variant, the breakthrough region motif is a so-called macroscopic breakthrough region motif, which is composed of a plurality of so-called microscopic breakthrough recesses. The microscopic openings can be in the form of grid elements, for example in the form of a dot grid and/or line grid. A line grid can in particular be formed by parallel lines, approximately parallel lines, diverging lines or by a combination of the types mentioned above.

The term "microscopic" as used herein is not to be understood in the sense of "dimension in the micrometer range" or the like, but is to be understood only in relative terms. The microscopic breakthrough recesses are each perceptible to the observer with the naked eye, i.e. without the use of optical aids, and in the case of the preferred variant above, they produce an overall image, i.e. a macroscopic breakthrough area motif.

In a further preferred variant, the breakthrough area motif is composed of several macroscopic breakthrough recesses. The macroscopic breakthrough recesses in particular form a pattern or an image or part of an image, a character or a character sequence or a coding.

In a further preferred variant, the breakthrough area motif is composed by one or more macroscopic breakthrough recesses on the one hand and by a plurality of microscopic breakthrough recesses on the other hand. The macroscopic breakthrough recess (or the plurality of macroscopic breakthrough recesses) forms in particular a pattern or an image or part of an image, a character or a character sequence or a coding. The microscopic openings can be in the form of grid elements, as described above.

In all designs, the microscopic breakthrough recesses can preferably have a point dimension (in the case of a dot grid) or line width (in the case of a line grid) with a width in a range of 0.05 mm to 1 mm, in particular in a range of 0.1 mm to 0. 4mm. The distance between the adjacent microscopic breakthrough recesses (center-center) is preferably in a range of 0.05mm to 1mm.

The breakthrough area of the data carrier substrate is advantageously created by the action of laser radiation (or laser cutting), such as in WO 2010/072329 A1 and in the WO 2011/154112 A1 described.

It was found that delicate opening areas in the data carrier substrate, which lead to very thin (paper) webs, are extremely sensitive to mechanical damage. Surprisingly, the one-sided application of a film element using an adhesive layer leads to a significantly longer rotational stability of the data carrier substrate. In addition, it was found that the breakthrough region of the data carrier substrate formed by means of a plurality of breakthrough recesses on the one hand and the film element on the other hand stabilize each other against mechanical wear and are therefore more robust against destruction. In particular, a film element that is applied by means of an adhesive layer above a breakthrough region of a data carrier substrate formed by a plurality of breakthrough recesses is significantly more robust against destruction than a film element that is applied by means of an adhesive layer above a breakthrough region of a data carrier substrate formed by a single breakthrough recess.

In addition, by means of the data carrier structure according to the invention, it is possible to match the visual appearance of the film element or film security element to the visual appearance of the breakthrough area motif of the data carrier substrate.

According to one aspect of the invention, even better protection of the opening area formed in the data carrier substrate can be ensured by providing a film element on both the front and the back.

• einer reflektierenden Schicht (insbesondere einer metallischen, reflektierenden Schicht);
• einer semitransparenten (Spiegel-)Schicht (die insbesondere von der Gruppe bestehend aus Al, Ag, Ni, Cr, Cu, Au und einer Legierung eines oder mehrerer der vorstehend genannten Elemente gewählt ist); und
• einer zwischen der reflektierenden Schicht und der semitransparenten (Spiegel-)Schicht angeordneten dielektrischen Schicht,

wobei sich die Farbe des mehrschichtigen Aufbaus mit der Änderung des Betrachtungswinkels ändert.A preferred film security element includes, for example, an interference-capable, multi-layer structure with

• a reflective layer (in particular a metallic reflective layer);
• a semi-transparent (mirror) layer (selected in particular from the group consisting of Al, Ag, Ni, Cr, Cu, Au and an alloy of one or more of the above-mentioned elements); and
• a dielectric layer arranged between the reflective layer and the semi-transparent (mirror) layer,

where the color of the multi-layer structure changes as the viewing angle changes.

The first appearance of the interference-capable, multi-layer structure, which can be seen when looking at the front of the data carrier in reflected light, and the second appearance of the interference-capable, multi-layer structure, which can be seen when looking at the front of the data carrier in transmitted light, can advantageously be created by recesses in the reflective layer and / or the semi-transparent layer be generated. Such a film security element with different reflected light/transmitted light appearance is from the WO 2009/149831 A2 known. For example, the semi-transparent layer can have a large number of recesses arranged in a grid-like manner, which as a whole form a character, an image or a pattern. The pattern created in this way is visible in reflected light and disappears in transmitted light. Alternatively and/or additionally, a different reflected light/transmitted light appearance of the multilayer structure can be achieved by combining the structure with a relief structure, in particular a diffractive relief structure, a micro-optical relief structure or a sublambda structure.

• die beiden semitransparenten Spiegelschichten werden bevorzugt von Al oder Ag gewählt; die dielektrische Schicht ist insbesondere eine SiO₂-Schicht;
• im Falle, dass jede der beiden semitransparenten Spiegelschichten auf Al beruht, liegt die jeweilige bevorzugte Schichtdicke in einem Bereich von 5 nm bis 20 nm, insbesondere bevorzugt in einem Bereich von 10 nm bis 14 nm; die dielektrische SiO₂-Schicht hat vorzugsweise eine Schichtdicke in einem Bereich von 50 nm bis 450 nm, weiter bevorzugt in einem Bereich von 80 nm bis 260 nm, wobei die Bereiche von 80nm bis 100nm und von 220nm bis 240nm speziell für die Bereitstellung eines Gold/Blau-Farbwechsels besonders bevorzugt werden;
• im Falle, dass jede der beiden semitransparenten Spiegelschichten auf Ag beruht, liegt die jeweilige bevorzugte Schichtdicke in einem Bereich von 15 nm bis 25 nm; die dielektrische SiO₂-Schicht hat vorzugsweise eine Schichtdicke in einem Bereich von 50 nm bis 450 nm, weiter bevorzugt in einem Bereich von 80 nm bis 260 nm, wobei die Bereiche von 80nm bis 100nm und von 220nm bis 240nm speziell für die Bereitstellung eines Gold/Blau-Farbwechsels besonders bevorzugt werden.

According to another aspect of the invention, the film security element comprises a multi-layer structure with two semi-transparent layers and a dielectric layer arranged between the two semi-transparent layers, the multi-layer structure having different color tones when viewed in reflected light on the one hand and when viewed in transmitted light on the other hand, in particular when viewed in reflected light Appears gold-colored when viewed in reflected light and has a blue tone when viewed in transmitted light. The two different shades are, in particular, complementary colors. Such a multilayer structure is based in particular on two semi-transparent mirror layers and a dielectric layer arranged between the two semi-transparent mirror layers. Such a multi-layer structure, which appears gold when viewed in reflected light and shows a blue tone when viewed in transmitted light, is, for example, from the WO 2011/082761 A1 known. A metal selected from the group consisting of Al, Ag, Ni, Cr, Cu, Au and an alloy of one or more of the above-mentioned elements is particularly suitable as a semi-transparent mirror layer, with Al or Ag being preferred as a semi-transparent mirror layer and Al is particularly preferred. Suitable multilayer structures with two semi-transparent mirror layers and a dielectric layer arranged between the two semi-transparent mirror layers preferably have the following physical properties:

• the two semi-transparent mirror layers are preferably chosen from Al or Ag; the dielectric layer is in particular an SiO ₂ layer;
• in the event that each of the two semi-transparent mirror layers is based on Al, the respective preferred layer thickness is in a range from 5 nm to 20 nm, particularly preferably in a range from 10 nm to 14 nm; the dielectric SiO ₂ layer preferably has a layer thickness in a range from 50 nm to 450 nm, more preferably in a range from 80 nm to 260 nm, with the ranges from 80 nm to 100 nm and from 220 nm to 240 nm specifically for providing a gold /Blue color change is particularly preferred;
• in the case that each of the two semi-transparent mirror layers is based on Ag, the respective preferred layer thickness is in a range from 15 nm to 25 nm; the dielectric SiO ₂ layer preferably has a layer thickness in a range from 50 nm to 450 nm, more preferably in a range from 80 nm to 260 nm, with the ranges from 80 nm to 100 nm and from 220 nm to 240 nm specifically for providing a gold /Blue color change are particularly preferred.

• im Auflicht Magenta, im Durchlicht Blau-Grün;
• im Auflicht Türkis, im Durchlicht Orange-Gelb;
• im Auflicht Gold, im Durchlicht Blau-Violett;
• im Auflicht Silber, im Durchlicht Violett.

The multi-layered layer structures mentioned not only enable the creation of a semi-transparent functional layer, which appears gold-colored when viewed in reflected light and shows a blue tone when viewed in transmitted light, but depending on the choice of layer thickness, in particular of the dielectric layer, further color changes can be created, for example

• Magenta in reflected light, blue-green in transmitted light;
• Turquoise in reflected light, orange-yellow in transmitted light;
• Gold in reflected light, blue-violet in transmitted light;
• Silver in reflected light, violet in transmitted light.

A further preferred film security element comprises, for example, a liquid crystal layer which, when viewed in reflected light, shows a different color than when viewed in transmitted light. Alternatively and/or additionally, a different reflected light/transmitted light appearance can be achieved by providing the liquid crystal layer with a relief structure combined, in particular a diffractive relief structure, a micro-optical relief structure or a sublambda structure.

A further preferred film security element includes, for example, a print layer with an effect pigment composition which, when viewed in reflected light, shows a different color than when viewed in transmitted light, in particular a gold/blue color change, a gold/violet color change, a green-gold /magenta color change, a violet/green color change or a silver/opaque color change. Such printing inks are used, for example, in the WO 2011/064162 A2 described. Alternatively and/or additionally, a different reflected light/transmitted light appearance can be achieved by combining the print layer with a relief structure, in particular a diffractive relief structure, a micro-optical relief structure or a sublambda structure.

Further exemplary embodiments and advantages of the invention are explained below with reference to the figures, which are not reproduced to scale and proportions in order to increase clarity.

Figur 1

die Draufsicht auf ein Wertdokument mit einem Durchbrechungsbereich und einem oberhalb des Durchbrechungsbereichs angeordneten Foliensicherheitselement;

Figur 2

die Querschnittansicht eines Wertdokuments gemäß einem Vergleichsbeispiel;

Figur 3

die Querschnittansicht eines Wertdokuments gemäß einem erfindungsgemäßen Beispiel;

Figur 4

einen Teil eines Foliensicherheitselements gemäß einem ersten erfindungsgemäßen Beispiel im Auflicht;

Figur 5

den Teil des Foliensicherheitselements gemäß dem ersten erfindungsgemäßen Beispiel im Durchlicht;

Figur 6

einen Teil eines Papiersubstrats mit einem Durchbrechungsbereich gemäß einem ersten erfindungsgemäßen Beispiel;

Figur 7

das Papiersubstrat und das Foliensicherheitselement gemäß dem ersten erfindungsgemäßen Beispiel (jeweils ein Teil hiervon) im Durchlicht;

Figur 8

die Querschnittansicht eines Wertdokuments gemäß einem weiteren erfindungsgemäßen Beispiel;

Figur 9

einen Teil eines Foliensicherheitselements gemäß einem zweiten erfindungsgemäßen Beispiel im Auflicht;

Figur 10

den Teil des Foliensicherheitselements gemäß dem zweiten erfindungsgemäßen Beispiel im Durchlicht;

Figur 11

einen Teil eines Papiersubstrats mit einem Durchbrechungsbereich gemäß einem zweiten erfindungsgemäßen Beispiel;

Figur 12

das Papiersubstrat und das Foliensicherheitselement gemäß dem zweiten erfindungsgemäßen Beispiel (jeweils ein Teil hiervon) im Durchlicht;

Figur 13

einen Teil eines Foliensicherheitselements gemäß einem dritten erfindungsgemäßen Beispiel im Auflicht;

Figur 14

den Teil des Foliensicherheitselements gemäß dem dritten erfindungsgemäßen Beispiel im Durchlicht;

Figur 15

einen Teil eines Papiersubstrats mit einem Durchbrechungsbereich gemäß einem dritten erfindungsgemäßen Beispiel;

Figur 16

das Papiersubstrat und das Foliensicherheitselement gemäß dem dritten erfindungsgemäßen Beispiel (jeweils ein Teil hiervon) im Durchlicht.

Show it:

Figure 1

the top view of a document of value with a breakthrough area and a film security element arranged above the breakthrough area;

Figure 2

the cross-sectional view of a value document according to a comparative example;

Figure 3

the cross-sectional view of a value document according to an example according to the invention;

Figure 4

a part of a film security element according to a first example according to the invention in reflected light;

Figure 5

the part of the film security element according to the first example according to the invention in transmitted light;

Figure 6

a part of a paper substrate with a perforation area according to a first example according to the invention;

Figure 7

the paper substrate and the film security element according to the first example according to the invention (each a part thereof) in transmitted light;

Figure 8

the cross-sectional view of a document of value according to a further example according to the invention;

Figure 9

a part of a film security element according to a second example according to the invention in reflected light;

Figure 10

the part of the film security element according to the second example according to the invention in transmitted light;

Figure 11

a part of a paper substrate with a perforation area according to a second example according to the invention;

Figure 12

the paper substrate and the film security element according to the second example according to the invention (each a part thereof) in transmitted light;

Figure 13

a part of a film security element according to a third example according to the invention in incident light;

Figure 14

the part of the film security element according to the third example according to the invention in transmitted light;

Figure 15

a part of a paper substrate with a perforation area according to a third example of the invention;

Figure 16

the paper substrate and the film security element according to the third example according to the invention (each a part thereof) in transmitted light.

Figure 1 shows a document of value 1, in the present example a banknote, in a top view. The banknote 1 has an opening area 2 (shown in dashed lines). The banknote 1 is provided on its front with a foil security element 3, which covers the opening area 2 of the banknote 1 on one side.

Figure 2 shows a document of value 4 according to a comparative example in a cross-sectional view (along the line in the Figure 1 shown line A-A'). The document of value 4 is based on a paper substrate 5 which has a single opening recess 6. The recess 6 was created by punching and is in the paper substrate 5 when viewed in plan view in the form of a square with the dimensions 1cm x 1cm. The document of value 4 is provided on the front with a film security element 7, which covers the opening recess 6 on one side. The film security element 7 is attached to the paper substrate 5 by means of an edge-shaped adhesive layer (not shown in the figure).

That in the Figure 2 The document of value 4 shown was subjected to an experimental study in which the stability of the document of value was tested was simulated by bringing the document of value into contact with dirt and mechanical stress. The investigation led to the conclusion that, under extreme test conditions, the part of the film 7 that was located directly above the continuous square opening 6 of the paper substrate 5 was completely destroyed. In the edge area surrounding the square opening 6, the film 7 was still somewhat intact.

Figure 3 shows a document of value 8 according to an example according to the invention in a cross-sectional view (along the line in the Figure 1 shown line A-A'). The document of value 8 is based on a paper substrate 9 with a breakthrough area 10, which is formed by a plurality of recesses breaking through the paper substrate 9. In the example, the opening area 10 has the appearance according to Figure 11 , where the black color denotes the areas cut out of the paper using laser cutting and the white color denotes the areas of paper left after the laser treatment. In the example, the paper areas remaining after laser treatment form the "macroscopic" character string "PL", surrounded by sixteen thin, line-shaped paper bars. The breakthrough area 10 is in the paper substrate 9 when viewed in plan view in the form of a square with dimensions of 1cm x 1cm. The document of value 8 is provided on the front with a film security element 11 which covers the opening area 10 on one side. The film security element 11 is attached to the paper substrate 9 by means of an edge-shaped adhesive layer (not shown in the figure).

That in the Figure 3 Document of value 8 shown was subjected to the same experimental study as in the comparative example above, in which the circulation stability of the document of value is simulated by bringing the document of value into contact with dirt and mechanical stress. The investigation led to the result that, under extreme test conditions, the part of the film 11, which is located directly above the opening area 10 of the paper substrate 9, is worn, but not completely destroyed as in the comparison example above.

Figure 4 shows the section of a film security element 12 according to a first example according to the invention in reflected light. When viewing the film security element 12 in reflected light, the viewer perceives a brightly outlined area 13 (in the form of a sky) and a darkly outlined area 14 (in the form of a sea with waves).

Figure 5 shows the section of the film security element 12 when viewed in transmitted light. In addition to the brightly outlined area 13 (in the form of a sky) and the darkly outlined area 14 (in the form of a sea with waves), the viewer perceives the darkly outlined area 15 (in the form of a sun).

That the Figures 4 and 5 The underlying film security element 12 can, for example, have a film substrate (eg polyethylene terephthalate) which is provided with a three-layer, interference-capable structure, such as that in WO 2009/149831 A2 is described (see in the WO 2009/149831 A2 e.g. that Figures 1 and 5 ).

Figure 6 shows the opening area of a paper substrate 16, which is connected to the film security element 12 Figures 4 and 5 should be provided. The paper substrate 16 has a paper area 17 (in the Figure 6 shown in white), from which paper areas 18 were cut out by punching or laser cutting. The paper areas 18 together form a breakout area motif (in the form of an island and a palm tree).

Figure 7 shows the paper substrate 16 of Figure 6 , which is connected to the film security element 12 Figures 4 and 5 when viewed in transmitted light. In addition to the appearance of the film security element 12 in transmitted light (see Figure 5 ) the breakthrough area motif 18 (see Figure 6 ) true.

Figure 8 shows the cross-sectional view of a valuable document 19 according to a further example according to the invention. Unlike that in the Figure 3 The value document 8 shown has the value document 19 Figure 8 a paper substrate 20 with a breakthrough area 21, which is provided with a film security element 23 or a film element 22 on both the front and the back. In this way, the opening area 21 in the paper substrate 20 is particularly protected from damage. The film security element 23 can, for example, be found further above in connection with Figures 4 and 5 described film security element 12, which is attached to the paper substrate 20 by means of an adhesive layer. The film element 22 can also be a film security element, i.e. a film element that is provided with security features such as a hologram or a security print. In addition, the film element 22 can be a film security element that is similar to the film security element 23. The interaction of the two films 22 and 23 synergistically enhances the appearance for the viewer in transmitted light. In the simplest case, the film element 22 can also be a conventional film (without any security features), which is attached to the paper substrate 20 by means of an adhesive layer.

Figure 9 shows a film security element 24 according to a second example according to the invention when viewed in reflected light. The viewer perceives the areas 25 and 26 in the form of a golden color. The area 26 forms the character string "50" and appears to the viewer compared to the background 25 in the form of a deceptively real, three-dimensionally curved surface.

The film security element 24 includes a film substrate and a multi-layer structure two semi-transparent layers and a dielectric layer arranged between the two semi-transparent layers, which appears gold when viewed in reflected light and shows a blue tone when viewed in transmitted light. Such a multi-layer structure is from the WO 2011/082761 A1 known. The multi-layer structure is also combined with a micro-optical relief structure in area 26. The production of a micro-optical relief structure is known in the art (see, for example, WO 2014/060089 A2 ). Here, the film substrate is first provided with an embossing varnish, which has a micro-optical relief structure in some areas. The multilayer structure with two semi-transparent layers and a dielectric layer arranged between the two semi-transparent layers is then applied to the embossing varnish.

Figure 10 shows the film security element 24 of Figure 9 when viewed in transmitted light. The viewer perceives the film in the form of a full-surface, uniform area 27 with a blue color.

Figure 11 shows the breakthrough area 28 of a paper substrate that is connected to the film security element 24 Figures 9 and 10 should be combined. The black color indicates the areas cut out of the paper using laser cutting. With white color are in the Figure 11 refers to the paper areas left after laser treatment. In the example, the paper areas remaining after laser treatment form the "macroscopic" character string "PL", surrounded by sixteen thin, line-shaped paper bars. The area 28 has the shape of a square with dimensions of 1cm x 1cm.

Figure 12 shows that in the Figure 11 paper substrate 28 shown, combined with the film security element 24 of the Figures 9 and 10 , when viewed in transmitted light. The viewer takes the in the Figure 12 Areas shown in black appear with gold color in the form of a dark background, in front of which the in the Figure 12 areas shown in white with a blue color stand out in the form of a bright, visually appealing appearance.

Figure 13 shows a film security element 29 according to a third example according to the invention when viewed in reflected light. The viewer perceives the areas 30 and 31 in the form of a golden color. The area 31 forms the character string "50" and appears to the viewer compared to the background 30 in the form of a deceptively real, three-dimensionally curved surface.

The film security element 29 comprises a film substrate and a multilayer structure with two semi-transparent layers and a dielectric layer arranged between the two semi-transparent layers, which appears gold when viewed in reflected light and shows a blue tone when viewed in transmitted light. Such a multi-layer structure is from the WO 2011/082761 A1 known. The multi-layer structure is also combined with a micro-optical relief structure in area 31. The production of a micro-optical relief structure is known in the art (see, for example, WO 2014/060089 A2 ).

Figure 14 shows the film security element 29 of Figure 13 when viewed in transmitted light. The viewer perceives the film in the form of a full-surface, uniform area 32 with a blue color.

Figure 15 shows the opening area 33 of a paper substrate that is connected to the film security element 29 Figures 13 and 14 should be combined. The black color indicates the areas cut out of the paper using laser cutting. With white color are in the Figure 15 refers to the paper areas left after laser treatment. The area 33 shown has the shape of a square with dimensions of 1cm x 1cm.

Figure 16 shows that in the Figure 15 paper substrate 33 shown, combined with the film security element 29 of Figures 13 and 14 , when viewed in transmitted light. The viewer takes the in the Figure 16 Areas shown in black appear with gold color in the form of a dark background, in front of which the in the Figure 16 areas shown in white with a blue color stand out in the form of a bright, visually appealing appearance.

In the examples above, the opening area in the paper substrate had the dimensions 1 cm x 1 cm and the shape of a square, purely as an example. It goes without saying that both the exact dimensions and the exact shape of the opening area (square shape, rectangle shape, trapezoid shape, round shape, oval shape, archway shape, etc.) can be chosen arbitrarily.

Claims (7)

1. A data carrier (1), in particular a value document or a security paper, comprising a data-carrier substrate (5) having a break-through area (2, 10) having a front side and a back side, wherein

   - the front side of the data-carrier substrate is furnished with a foil security element (7) in the break-through area;

   - the break-through area of the data-carrier substrate is formed by a multiplicity of gaps breaking through the data-carrier substrate, which together form a break-through area motif, wherein the break-through area motif is recognizable through the foil security element upon viewing the front side of the data carrier in transmitted light and upon viewing the front side of the data carrier in incident light the break-through area motif is not recognizable and is hidden by the foil security element;

   - the foil security element upon viewing the front side of the data carrier in incident light shows a first appearance and upon viewing the front side of the data carrier in transmitted light shows a second appearance, which supplements with the break-through area motif of the data-carrier substrate,

   wherein the foil security element has a multilayer construction having two semi-transparent layers and a dielectric layer arranged between the two semi-transparent layers, wherein the multilayer construction has different color tones upon viewing in incident light on the one hand and upon viewing in transmitted light on the other hand.
2. The data carrier according to claim 1, wherein the multilayer construction is combined with a relief structure, in particular a diffractive relief structure, a micro-optic relief structure or a sublambda structure.
3. The data carrier according to claim 2, wherein the relief structure leads to an appearance which is visually recognizable merely upon viewing the front side of the data carrier in incident light, but not upon viewing the front side of the data carrier in transmitted light.
4. The data carrier according to any of claims 1 to 3, wherein the breaking-through gaps forming the break-through area motif in the data-carrier substrate are obtainable by the action of laser radiation on the data-carrier substrate.
5. The data carrier according to any of claims 1 to 4, wherein the back side of the data-carrier substrate in the break-through area is furnished with a foil element, in particular a foil security element which is chosen independently of foil security element arranged on the front side of the data-carrier substrate.
6. The data carrier according to claim 5, wherein the back side of the data-carrier substrate in the break-through area is furnished with a foil security element which upon viewing the back side of the data carrier in incident light shows a first appearance and upon viewing the back side of the data carrier in transmitted light shows a second appearance which supplements with the break-through area motif of the data-carrier substrate.
7. A data carrier (1), in particular a value document or a security paper, comprising a data-carrier substrate (5) having a break-through area (2, 10) having a front side and a back side, wherein

   - the front side of the data-carrier substrate is furnished with a foil security element (7) in the break-through area;

   - the break-through area of the data-carrier substrate is formed by a multiplicity of gaps breaking through the data-carrier substrate, which together form a break-through area motif, wherein the break-through area motif is recognizable through the foil security element upon viewing the front side of the data carrier in transmitted light and upon viewing the front side of the data carrier in incident light the break-through area motif is not recognizable and is hidden by the foil security element;

   - the foil security element upon viewing the front side of the data carrier in incident light shows a first appearance and upon viewing the front side of the data carrier in transmitted light shows a second appearance, which supplements with the break-through area motif of the data-carrier substrate,

   - wherein the back side of the data-carrier substrate in the break-through area is furnished with a foil security element which is chosen independently of foil security element arranged on the front side of the data-carrier substrate and which upon viewing the back side of the data carrier in incident light shows a first appearance and upon viewing the back side of the data carrier in transmitted light shows a second appearance which supplements with the break-through area motif of the data-carrier substrate.

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