WO2008046489A1

WO2008046489A1 - Security document comprising a scrapeable security layer, and transfer film

Info

Publication number: WO2008046489A1
Application number: PCT/EP2007/008222
Authority: WO
Inventors: Gerhard Zinner
Original assignee: Leonhard Kurz Stiftung & Co. Kg
Priority date: 2006-10-19
Filing date: 2007-09-21
Publication date: 2008-04-24
Also published as: DE102006053362A1; DE202006015989U1

Abstract

The invention relates to a security document (1, 1') comprising confidential information (2, 20), especially in the form of alphanumeric characters, symbols and/or pictorial or graphic representations, the confidential information being hidden by an opaque security layer that can be scraped without damaging the confidential information, said security layer comprising at least one continuous opaque covering layer (3b). At least one transparent first base layer is arranged between the scrapeable security layer and the confidential information, said base layer remaining over the confidential information when the security layer is scraped off. The invention also relates to a transfer film.

Description

Security document with scratch-off security layer. as well as transfer foil

The invention relates to a security document with confidential information, in particular in the form of alphanumeric characters, symbols and / or pictorial or graphical representations, the confidential information being concealed by an opaque security layer scratch-off without compromising the confidential information, comprising at least one continuous opaque Covering layer comprises. The invention further relates to a transfer film for forming an opaque, scratch-off security layer on a security document.

Security documents which contain a confidential information covered by an opaque, scratch-off security layer are sufficiently known from DE 699 14 187 T2. The confidential information, which may be secret code, PIN, sequence of symbols, etc., becomes readable in such documents when the security layer is scratched. The scratching off of the security layer takes place without impairing the readability of the confidential information hidden underneath.

Well-known security documents of this type are, for example, lottery coupons, in particular so-called "scratch-offs", telephone cards, trading vouchers, game tickets and letters from banks, telephone companies, etc. for the communication of PIN numbers, etc.

A transfer film in the form of an embossing film for forming an opaque, scratch-off security layer on a security document is known from German Utility Model DE 92 17 061 U1. The embossing film has in this order a carrier film, a release layer, a decorative layer, which a optical diffraction, in particular holographically effective structure, and a wax adhesion layer on. The decorative layer is preferably formed at least two layers, wherein the waxy layer facing the continuous layer is formed of an opaque material.

If a scratch-off security layer is now applied to a security document with a relatively rough surface, it has been found that residue-free scratching is difficult and often accompanied by smearing of the security layer, which severely impairs the readability of the confidential information and, in the worst case, a read-out which makes confidential information impossible. When using a security document with a soft surface or scratch-sensitive confidential information, it has also been found that there is a risk of damaging the confidential information when scraping off the security layer, so that even in this case it is difficult or impossible to read out the confidential information ,

It is therefore an object of the invention to provide an improved security document in which a read-out of the confidential information even when using a security document with a rough and / or soft surface and / or when using a scratch-sensitive confidential information is readily possible. Furthermore, a transfer film is to be provided which enables the formation of a security document improved to that effect.

The object is achieved for the security document containing confidential information, in particular in the form of alphanumeric characters, symbols and / or pictorial or graphical representations, the information being hidden by an opaque, scratch-off security layer comprising at least one continuous opaque cover layer, in that at least one transparent first primer layer, which remains on the confidential information when the security layer is scratched, is arranged between the scratch-off security layer and the confidential information.

The at least one transparent first primer layer acts on the one hand as a scratch-resistant protective layer over the confidential information and prevents the confidential information is scratched when scratching the security layer. On the other hand, the at least one transparent first primer layer provides a smooth surface from which the security layer can be scraped off without residue. The confidential information can be easily read out through it due to the transparency of the at least one first primer layer. An impairment of the readability of the confidential information when scratching the security layer is reliably prevented.

With regard to a transfer film for forming an opaque, scratch-off security layer on a security document, wherein the transfer film has a carrier film and a transfer layer which can be detached from the carrier film and comprises the security layer, the object is achieved in that the transfer layer starts from the carrier film

at least one optional decorative layer as a constituent of the security layer, at least one continuous opaque cover layer as a component of the

Security layer

- Optionally, a partially formed on the at least one opaque cover layer printed image of a color pigmented lacquer layer as part of the security layer, and further - at least one transparent first primer layer.

The transfer film according to the invention enables the formation of a security document according to the invention with the advantages mentioned above.

In this case, the at least one first primer layer can be formed colorless, but also colored transparent. Here, a color transparent first primer layer may also interact with the confidential information, e.g. function as a color filter to hide certain information pieces of the confidential information, etc ..

It has proven useful if the scrapable security layer comprises on its side facing the at least one first primer layer at least one second primer layer. In this case, the at least one second primer layer is designed so that these scratch off the Safety layer easily and residue-free from the at least one first primer layer can be replaced. The at least one second primer layer may be both transparent and opaque.

In order to be able to set the properties of the primer layers precisely, it has proven useful if at least two first primer layers and / or at least two second primer layers are present. Thus, the at least one first primer layer preferably has an adhesive layer for producing an adherent bond with the security document, and further a scratch-resistant protective layer, which by means of the adhesive layer on

Security document is attached and prevents damage to the confidential information when scratching the security layer. The at least one second primer layer preferably has a layer which can be easily and residue-free removed from the adjacent first primer layer and optionally an adhesion promoter layer for producing an adherent bond with the remaining layers of the security layer.

If the transfer film is a hot stamping film, the adhesion between the at least one first primer layer and the at least one second primer layer must be such that a release of the security layer from the at least one first primer layer does not take place during hot stamping, but only during the mechanical scraping.

Preferably, a layer thickness of the at least one second primer layer is in the range of 3 to 10 μm. A layer thickness for the at least one first primer layer is preferably in the range of 1 to 5 μm. If the security layer is formed by the transfer layer of a hot stamping foil, then the primer layers are usually composed in such a way that they become tacky only when heat is applied accordingly.

In order to ensure a residue-free scraping off of the at least one second primer layer, it has proven useful if its surface tension is less than 20 mN / m and preferably in the range of 10 to 20 mN / m. The determination was carried out using a contact angle measuring device from Krüss, model: FM40 EasyDrop.

The security layer preferably has, in regions, at least one printed image matched to the confidential information, which prevents unauthorized reading out of the confidential information when the security document is viewed in transmitted light or at least makes it more difficult. The printed image is invisible to the normal viewer of the security document.

In particular, in the case of security documents which have a thin and / or particularly translucent substrate to which the confidential information has been applied, it has been found that it is often possible to illuminate the confidential information without the removal of the opaque, merely by backlighting the security document. Scratchable security layer read through them without authorization. Especially a back lighting of the

Security document with an intense, punctiform light source in a darkened environment is often suitable for detecting the information through the security layer. Moreover, if the security element is bent or kinked around the light source, this can lead to the formation of fine cracks or cracks in the security layer that can not be detected under normal illumination, through which an unauthorized reading of the confidential information can be made even easier. In an unauthorized Ausleseversuch the confidential information of the security document in transmitted light is now not only the confidential information recognizable, but also the printed image. The printed image is matched to the confidential information so that it is no longer different for the viewer, or at least only with difficulty, which information content actually belongs to the confidential information or confusion creating print image.

Thus, for example, the printed image can be designed so that it simply complements the confidential information in transmitted light, without the viewer becomes aware that not the confidential but instead another, misleading information is read. Is it the confidential one Information about a sequence of numbers, the image may be formed as at least one number that appears to the viewer in transmitted light at any point in the sequence of numbers and thus falsified the confidential information. Likewise, it is possible to proceed with character, symbol or letter sequences as well as combinations thereof.

The printed image can also be designed so that it covers the confidential information seen in transmitted light with an irregular pattern of lines, characters or the like, so that the viewer in the transmitted light is immediately aware that the confidential information is not or at least not readily readable , If the confidential information is a string of letters, for example, the printed image may contain a large number of further letter sequences which, viewed in transmitted light, may appear next to and / or above the confidential information for the viewer, thus concealing the confidential information. Likewise, it is possible to proceed with character, symbol or letter sequences as well as combinations thereof.

The security document equipped with such a print image thus reliably prevents unauthorized reading of the confidential information through the security layer.

It has proven useful for the security document and the transfer film if the at least one first primer layer comprises at least one single layer of at least one thermoplastic resin, optionally with the addition of at least one filler. As thermoplastics or thermoplastic resins, polyvinyl chloride, modified rosin, polyvinyl acetate, ethylene-vinyl acetate terpolymers, sufficiently tacky acrylates, chlorinated polypropylene or polyethylene, polyesters, polyurethanes or mixtures thereof have proven useful. In one embodiment, an acrylate-modified resin which has acrylate and / or acrylic acid monomers as the main component has proven to be useful. Preferred fillers are, for example, silicon dioxide, Al ₂ O ₃ , silicates, TiO ₂ and the like. The at least one first primer layer ensures the bond between the security layer and the security document.

Furthermore, it has proven useful if the at least one second primer layer comprises at least one individual layer which is formed from a resin comprising or consisting of at least one silicone-modified resin and / or at least one fluorine-modified resin and / or at least one wax or consists of. A silicone-modified resin is understood as meaning a carrier polymer, for example of polyurethanes, acrylates, vinyl acetates, polyesters or mixtures thereof, the carrier polymer being modified by silicone groups. By a fluorine-modified resin is meant a resin modified by fluorine groups. For example, a wax can be understood to mean a polyolefin wax, such as a polyethylene or polypropylene wax. Wax mixtures are also usable. On the one hand, the at least one second primer layer must be scratch-free from the at least one first primer layer and, on the other hand, have a sufficient bond to it. In particular, the adhesion of the at least one second primer layer to the first primer layer will be adjusted so that the security layer can not be separated from the at least one first primer layer by means of a tape test (e.g., Tesa 4104).

The at least one opaque cover layer is preferably formed by an opaque color coat layer and / or by an opaque metal layer.

It has proved to be advantageous if the scrapable security layer further comprises at least one decorative layer arranged on the at least one opaque cover layer and facing a viewer of the security document. The decorative layer makes it difficult to reproduce the scratch-off security layer after at least partially removing it from the security document and after unauthorized reading of the confidential information. It has proven useful if the at least one decorative layer is designed in the form of a filigree and / or complicated pattern, in particular in the form of a guilloche. The decorative layer can be monochrome or be designed as multi-color printing.

It has proven particularly useful if the color-pigmented lacquer layer for forming the printed image has a higher elasticity than the at least one optional decorative layer and the at least one opaque cover layer. If the security document is bent or kinked, this leads to the fact that the color pigmented lacquer layer of the printed image does not break or crack at a much greater bending or buckling stress than the at least one opaque cover layer and the optionally present at least one decorative layer. Seen in transmitted light, the viewer is given the impression that the scratch-off security layer as a whole is already covered with fine cracks and that the confidential information can now be read out. However, since the printed image does not show any cracks, only a combination of the confidential information and the printed image, ie a falsified information content, can be read out.

The elasticity of the color-pigmented lacquer layer for forming the printed image is preferably set as a function of the flexibility or bendability of the security document. If it is a security document that can be bent or even kinked without visible damage, such as a security document with a substrate made of paper or thin plastic film, the color pigmented lacquer layer to form the print image in the security layer must be so elastic be that even with a buckling stress no cracks or cracks occur that increase the light transmission of the printed image.

If the security document is, for example, a plastic card for telephone cards or the like, which has a much lower flexibility than paper or thin plastic film due to its usual thickness, then the color-pigmented lacquer layer can be correspondingly less elastic to form the printed image. The main factor influencing the elasticity of a security document is its thickness.

To increase the contrast in the case of transmitted light, the color-pigmented lacquer layer is preferably opaque, in particular opaque black educated.

To increase the safety, it has proved to be advantageous if the at least one opaque cover layer and / or the at least one decorative layer has an optically variable element which exhibits an optically variable effect. The reproduction of such a trained security layer after an at least partial removal of these from the security document and after an unauthorized reading of the confidential information is particularly difficult.

Preferably, the optically variable element to a viewing angle-dependent optically variable effect, in particular it comprises a hologram and / or a Kinegram ^® and / or a diffractive relief structure and / or a liquid crystalline material and / or an optically variable pigment with blickwinkelabhängigem interference color effect. Furthermore, it is advantageous if the optically variable element has a thermochromic and / or a luminescent material.

Such optically variable elements require complex manufacturing processes and / or sometimes involve difficult to obtain, cost-intensive materials.

Furthermore, it has proven useful if the scratch-off security layer has a machine-readable feature substance, in particular a magnetic and / or an electrically conductive feature substance. The presence of such feature substances is not apparent to the viewer without technical aids and thus opens up another possibility to check the security document for manipulative changes.

The at least one decorative layer may further comprise a metallic and / or a dielectric reflective layer and / or a thin-film interference layer stack included with blickwinkelabhängigem color change effect, in particular also in combination with an optically diffractive structure such as a hologram, a Kinegram ^® or a diffractive relief structure. If a continuous opaque metallic reflection layer is used, it may be possible to dispense with an opaque embodiment of underlying cover layers. In particular, it is preferred if the printed image is in the form of alphanumeric characters, symbols and / or pictorial or graphic representations. Ideally, the print image is designed to use the same range of shapes that also serve as the basis for forming the associated confidential information. If the confidential information is formed, for example, by numbers or a number sequence, the printed image preferably also contains numbers. If the confidential information is formed by different symbols or symbol sequences, for example in the form of shamrocks and crosses, the printed image preferably also contains such symbols. Furthermore, a similar design of the printed image with regard to the confidential information is preferably selected, in particular with regard to a line width, a font, a character size, a character spacing, etc. If, for example, the confidential information is formed as a halftone image in the form of small halftone dots, this becomes Printed image preferably designed in the same way.

It is preferred if the surface hardness in the area of the scratch-off layer applied to the security document is in the range of 0.5 to 1.5 Newtons (Erichsen Model 318 Hardness Test Rod).

It has proven useful if the security document has a translucent substrate and the confidential information is printed on the substrate. As a translucent substrate in particular paper, plastic or a laminate of paper and / or plastic have been found. The security document is in particular a telephone card, a lottery coupon, a ticket, a trading coupon, or a document containing secret numbers or secret codes.

It has proved to be favorable in view of the scratchability of the security layer, if this is formed by a transfer layer of a transfer film. In this case, the transfer layer comprises the security layer and the at least one transparent first primer layer. A first primer layer may be formed as an adhesive layer, a second primer layer as a wax adhesion layer. A suitable wax adhesion layer can also be found in DE 92 17 061 U1.

The transfer film according to the invention can furthermore have a release layer between the carrier film and the transfer layer, which facilitates a detachment of the transfer layer from the carrier film. In particular, stripping layers of wax or silicones have proven useful here. The release layer may remain on the carrier film or form part of the transfer layer. In the latter case, however, the release layer may need to be transparent in order to make the at least one decorative layer and / or the at least one opaque cover layer visible.

The transfer layer may comprise further layers, such as adhesion promoter layers, layers for filling relief structures or the like, as long as the scratchability of the security layer is retained by the security document.

FIGS. 1a to 6 are intended to illustrate the idea of the invention by way of example. So shows:

FIG. 1a shows a security document according to the invention in the form of a map in plan view;

FIG. 1 b shows the security document from FIG. 1 a in the sectional view A - A ^' ;

FIG. 2a shows another security document according to the invention;

FIG. 2b shows the security document from FIG. 2a in sectional view B-B ^' ;

FIG. 3 shows a transfer film according to the invention;

FIG. 4 shows a further transfer film according to the invention; Figure 5 is a photograph of a conventional security document in transmitted light; and

FIG. 6 shows a photograph of a security document according to the invention in transmitted light;

FIG. 1a shows a security document 1 according to the invention in the form of a map in plan view. The security document 1 has a substrate 10 made of opaque colored but translucent plastic. A confidential information 2 in the form of the secret code "124578 B1C" is printed on the substrate 10. A rectangular shaped area of a transfer layer 3 of a transfer film, which comprises an opaque, scratch-off security layer, was affixed over the confidential information 2. In a transfer process has on its side facing the viewer a colored decorative layer 3a in the form of a grid-like imprinting through the grating gaps of the decorative layer 3a through an opaque cover layer 3b in the form of a highly pigmented colored lacquer layer can be seen.

Underneath the cover layer 3b, invisible in this illustration, are a second primer layer 3c of 10 parts of cyclohexanone 55 parts of xylene

20 parts of silicone-polyester (T _9: 15 - 20 ⁰ C) 15 parts polyethylene wax (softening point: 14O ⁰ C)

and a transparent first primer layer 3d of 29 parts acrylate dispersion (38% in water, MFT: <4 ° C), 44 parts acrylate / styrene dispersion (45% in water, MFT: 67 ° C), 14 parts water, 11 parts isopropyl alcohol, 2 parts silicon dioxide.

MFT is an abbreviation for the minimum film temperature, ie the minimum temperature that must be present for film formation. The scratch-off from the first primer layer 3d security layer is thus composed here of the decorative layer 3a, the opaque cover layer 3b and the second primer layer 3c and conceals the confidential information 2 in front of the eye of an observer. The security document 1 is shown in FIG. 1 a such that the confidential information 2 can be read out through the security layer. Under normal lighting, however, the confidential information 2 would not be recognizable. A determination of the surface hardness in the area of the scratch-off security layer gave a value of 1 Newton (Erichsen Hardness Test Rod Model 318).

Figure 1 b shows the security document 1 of Figure 1a in the sectional view A - A ^' . It is the substrate 10 and printed thereon confidential information 2 recognizable. Above this is the transfer layer 3, which has the transparent first primer layer 3d for attachment to the substrate 10. On the first primer layer 3d are the continuous second primer layer 3c, the continuous opaque cover layer 3b and the lattice-shaped printed decorative layer 3a.

FIG. 2 a shows a security document 1 ^' according to the invention in the form of a map in plan view. The security document 1 ^' has a substrate 10 made of opaque, but translucent plastic. 1a, a confidential information 2 in the form of the secret code "124578 B1C" is printed on the substrate 10. A rectangular shaped area of a transfer layer 3 ^'of a transfer film, which comprises a scratch-off security layer, was affixed over the confidential information 2 in a transfer process . the transfer layer 3 ^'has, on its side facing the observer's side, a colored decorative layer 3a in the form of a grid-like imprint on. Because of the vacancy of the decorative layer 3a through is an opaque covering layer 3b visible in the form of a highly pigmented color coat layer. Furthermore, the transfer layer ^3', a print image 3e in the form of the number two, which is arranged in the middle of it in agreement with the confidential information 2. Underneath the covering layer 3b, invisible in this illustration, there are a second primer layer 3c and a transparent first primer layer 3d in the position shown in FIG annealed compositions. The opaque scratch-off security layer is composed here of the decorative layer 3a, the opaque cover layer 3b, the printed image 3e and the second primer layer 3c and conceals the confidential information 2 in front of the eye of an observer. The security document 1 'is shown in FIG. 2a in such a way that it is irradiated from the rear side with a punctiform light source, so that the confidential information 2 can be read out through the security layer. In this case, the print image 3d is recognizable, wherein the viewer can not distinguish between the confidential information 2 and the print image 3d, without the security layer is removed. The printed image 3e fits perfectly into the confidential information 2, so that in case of an unauthorized reading this instead of the correct secret code "124578 B1C" a wrong code, namely "1245782B1C" is read out as a supposedly correct secret code. Under normal lighting neither the confidential information 2 nor the print image 3e would be recognizable.

There are a variety of other ways to falsify or obscure the confidential information using a printed image, for example, by changing the position of the printed image against the confidential information or a print image is applied comprising a variety of similar codes. So is guaranteed at each Ausleseversuch that the

Observers can never be clear about what or where before, in the middle or after the confidential information 2, this is supplemented by a matching print image or which of the many recognizable codes is now the right one. Only scratching the decorative layer 3a, the opaque cover layer 3b, the printed image 3e and optionally the second primer layer 3c discloses the actual code.

FIG. 2b shows the security document 1 ^' from FIG. 2a in sectional view B-B ^' . It is the substrate 10 and printed thereon confidential information 2 recognizable. Above is the transfer layer 3 ^' , which has the transparent first primer layer 3d for attachment to the substrate 10. On the undercoat layer 3d are the second primer layer 3c, the print image 3d, the continuous opaque cover layer 3b and the lattice-shaped printed decorative layer 3a. FIG. 3 shows a transfer film 100 according to the invention in a sectional view, as can be used to form the security document 1 ^' according to FIGS. 2a and 2b. The transfer film 100 has a carrier film 5 made of PET, on which an optional release layer 6 made of silicone and a detachable transfer layer 3 ^'are located. On the release layer 6, a decorative layer 3a is printed, which is formed by a grid-shaped multi-color printing. On the decorative layer 3a, a continuous opaque cover layer 3b in the form of a highly pigmented colored lacquer layer is arranged. On the opaque cover layer 3b, a printed image 3e is formed from an opaque, black-pigmented lacquer layer which has a higher elasticity than the materials for forming the decorative layer 3a and the opaque cover layer 3b. Finally, there are a second primer layer 3c and a transparent first primer layer 3d, the latter being suitable for attaching the transfer layer 3 ^' to a security document.

FIG. 4 shows a further transfer film 100 ^' according to the invention in a sectional view, as it can be used to form a security document according to the invention. The transfer film 100 ^'has a backing sheet 5 made from PET, an optional release layer 6 of silicon and one of them peelable transfer layer 3 is located on softer ^". On the release layer 6 is a decorative layer ^3a' printed, which are formed by a continuous, colorless transparent varnish is. on the decorative layer 3a ^'3b is disposed of aluminum a continuous opaque cover. In the decorative layer ^3a' and the opaque covering layer 3b is a diffractive relief structure 4 is arranged, which shows a viewing angle-dependent optically variable effect. In the opaque covering layer 3b is a printed image 3e is formed from an opaque black pigmented lacquer layer which has a higher elasticity than the materials for forming the decorative layer 3a and the opaque cover layer 3b Finally, a second primer layer 3c in the form of a wax adhesion layer is present to remove the security layer from the transparent first primer layer to be able to replace 3d. The first primer layer 3d is suitable for affixing the transfer layer 3 ^" to a security document." After affixing the transfer layer 3 "over confidential information on a security document, the carrier film 5 including the release layer 6 is removed and the viewer recognizes it generated by the diffractive relief structure 4, optically variable effect through the decorative layer 3a ^' therethrough.

Figure 5 is a photograph of a portion of a conventional security document having a translucent substrate 10 and confidential information 20 in the form of a sequence of digits covered by a strip of transfer layer 30 of a transfer sheet containing an opaque, scratch-off security layer. The substrate 10 is irradiated from the rear side with a strong point light source at the time of photographing and bent around the light source. Due to the bending stress, extremely fine cracks form in the opaque, scratch-off security layer, through which the confidential information 20 now becomes readable. Here are the numbers "7 7" recognizable.

FIG. 6 shows a photograph of a region of a security document according to the invention with a translucent substrate 10 and confidential information printed on the substrate 10, which is covered by a strip of a transfer layer 30 of a transfer film containing an opaque, scratch-off security layer. The substrate 10 is irradiated from the rear side with a strong point light source at the time of photographing and bent around the light source. Due to the bending stress, the finest cracks form in the opaque covering layer of the opaque, scratch-off security layer, through which the confidential information 20 and, furthermore, a printed image 3Oe hiding the confidential information 20 are visible. The printed image 3Oe is formed as a black-pigmented lacquer layer, which has a higher elasticity compared to the opaque cover layers of the opaque, scratch-off security layer, so that the printed image 3Oe shows no cracks despite the bending stress. Reading out the confidential information 20 from the visible line tangles, which is composed of the confidential information 20 and the print image 3Oe is thus no longer or no longer readily possible. Depending on the appearance of the confidential information, a large number of printed images can thus be used in order to prevent unauthorized reading of the confidential information through the opaque, scratch-off security layer.

Claims

claims

A security document (1, 1 ^' ) having confidential information (2, 20), in particular in the form of alphanumeric characters, symbols and / or pictorial or graphic representations, the confidential information (2, 20) being represented by an opaque, without a Concealing the confidential information (2, 20) scratch-off security layer, which comprises at least one continuous opaque cover layer (3b), characterized in that between the scratch-off security layer and the confidential information (2, 20) at least one transparent first primer layer (3d) which remains on the confidential information (2, 20) when scratching the security layer.

2. Security document according to claim 1, characterized in that the scratch-off security layer on its at least one first primer layer (3d) side facing at least a second

Primer layer (3c) comprises.

3. Security document according to one of claims 1 or 2, characterized in that at least two first primer layers (3d) and / or at least two second primer layers (3c) are formed.

4. Security document according to one of claims 1 to 3, characterized in that the at least one first primer layer (3d) comprises at least one single layer of a thermoplastic resin.

A security document according to any one of claims 1 to 4, characterized in that the at least one second primer layer (3c) comprises at least a single layer of a resin comprising or consisting of a silicone-modified resin and / or a fluorine-modified resin, or / or has or consists of a wax.

6. Security document according to one of claims 1 to 5, characterized in that the scratch-off security layer partially at least one on the confidential information (2, 20) tuned print image (3e), which an unauthorized reading of the confidential information (2, 20) at Viewing the security document (1, 1 ^' ) prevented in transmitted light or at least made more difficult.

7. Security document according to claim 6, characterized in that the printed image (3e) between the at least one second primer layer (3c) and the cover layer (3b) is arranged.

8. Security document according to one of claims 1 to 7, characterized in that the scratch-off security layer further at least one, on the at least one opaque cover layer (3b) arranged and a viewer of the security document (1, 1 ^' ) facing decorative layer (3a, 3a ^' ) having.

9. Security document according to one of claims 6 to 8, characterized in that the printed image (3e) is formed by a colored pigmented lacquer layer which has a higher elasticity than the at least one opaque cover layer (3b) and optionally the at least one decorative layer (3a . 3a ^' ).

10. Security document according to one of claims 8 or 9, characterized in that the at least one decorative layer (3a, 3a ^' ) in the form of a filigree and / or complicated pattern is formed, in particular in the form of a guilloche.

11. Security document according to one of claims 1 to 10, characterized in that the at least one opaque cover layer (3b) and / or the at least one decorative layer (3a, 3a ^' ) have an optically variable element which exhibits an optically variable effect.

12. Security document according to claim 11, characterized in that the optically variable element has a viewing angle-dependent optically variable effect, in particular a hologram, and / or a Kinegram ^® and / or a diffractive relief structure and / or a liquid crystalline material and / or an optically variable pigment with viewing angle dependent interference color effect.

13. Security document according to one of claims 11 or 12, characterized in that the optically variable element comprises a thermochromic and / or a luminescent material.

14. Security document according to one of claims 1 to 13, characterized in that the scratch-off security layer has a machine-readable feature substance, in particular a magnetic and / or an electrically conductive feature substance.

15. Security document according to one of claims 6 to 14, characterized in that the printed image (3e) in the form of alphanumeric characters, symbols and / or pictorial or graphical representations is formed.

16. Security document according to one of claims 1 to 15, characterized in that the security document (1, 1 ^' ) has a translucent substrate (10) and that the confidential information (2, 20) is printed on the substrate (10).

17. Security document according to claim 16, characterized in that the substrate (10) made of paper, plastic or a laminate of paper and / or plastic is formed.

18. Security document according to one of claims 1 to 17, characterized in that the security document (1, 1 ^' ) containing a telephone card, a lottery coupon, a trading coupon, a game ticket or a letter

Secret numbers or secret codes is.

19. Security document according to one of claims 1 to 18, characterized in that the scratch-off security layer by a transfer layer (3 ^' , 3 ^" ) of a transfer film (100, 100'), in particular according to one of claims 20 to 36, is formed.

20. Transfer film (100, 100 ^' ) for forming an opaque, scratch-off security layer on a security document (1, 1 ^' ), in particular according to one of claims 1 to 19, wherein the transfer film (100, 100 ^' ) comprises a carrier film (5) and a transfer layer (3 ^' , 3 ^" ) removable from the carrier film (5) and comprising the security layer, characterized the transfer layer (3 ^# , 3 ") starting from the carrier film (5)

at least one optional decorative layer (3a, 3a ^' ) as part of the security layer,

at least one continuous opaque cover layer (3b) as a constituent of the security layer,

Optionally, a printed image (3e) of a color-pigmented area formed on the at least one opaque cover layer (3b) is formed in regions

Lacquer layer as a component of the safety layer, and

- Has at least one transparent first primer layer (3d).

21. Transfer film according to claim 20, characterized in that the scratch-off security layer on its at least one first primer layer (3d) side facing at least one second primer layer (3c).

22. Transfer film according to one of claims 20 or 21, characterized in that at least two first primer layers (3d) and / or at least two second primer layers (3c) are formed.

23. Transfer film according to one of claims 20 to 22, characterized in that the at least one first primer layer (3d) has at least one single layer of a thermoplastic resin.

24. Transfer film according to claim 20, characterized in that the at least one second primer layer (3c) comprises at least one single layer of a resin which comprises or consists of a silicone-modified resin and / or comprises or consists of a wax.

25. Transfer film according to one of claims 20 to 24, characterized the color-pigmented lacquer layer has a higher elasticity than the at least one optional decorative layer (3a, 3a ') and the at least one opaque cover layer (3b).

26. Transfer film according to one of claims 20 to 25, characterized in that the printed image (3e) in the form of alphanumeric characters, symbols and / or pictorial or graphical representations is formed.

27. Transfer film according to one of claims 20 to 26, characterized in that the color-pigmented lacquer layer is opaque, in particular opaque black.

28. Transfer film according to one of claims 20 to 27, characterized in that the decorative layer (3a, 3a ^' ) is designed in the form of a filigree and / or complicated pattern, in particular in the form of a guilloche.

29. Transfer film according to one of claims 20 to 28, characterized in that the at least one opaque cover layer (3b) and / or the at least one decorative layer (3a, 3a ^' ) have an optically variable element which exhibits an optically variable effect.

30. Transfer film according to claim 29, characterized in that the optically variable element has a viewing angle-dependent optically variable effect, in particular a hologram, and / or a Kinegram ^® and / or a diffractive relief structure and / or a liquid crystalline material and / or an optically variable pigment with viewing angle dependent interference color effect.

31. Transfer film according to one of claims 29 or 30, characterized in that the optically variable element comprises a thermochromic and / or a luminescent material.

32. Transfer film according to one of claims 20 to 31, characterized in that the transfer layer (3 ^' , 3 ^" ) has a machine-readable feature substance, in particular a magnetic and / or an electrically conductive feature substance.

33. Transfer film according to one of claims 20 to 32, characterized in that the at least one first primer layer (3d) comprises an adhesive layer.

34. Transfer film according to one of claims 20 to 33, characterized in that the at least one second primer layer (3c) comprises a wax adhesion layer.

35. Transfer film according to one of claims 20 to 34, characterized in that the transfer film (100, 100 ^' ) is a hot stamping film.

36. Transfer film according to one of claims 20 to 35, characterized in that a release layer (6) is arranged between the carrier film (5) and the transfer layer (3 ^' , 3 ^" ).