EP3274187A1

EP3274187A1 - Security element with effect pigments and an embossing structure and method for the production thereof

Info

Publication number: EP3274187A1
Application number: EP16700527.1A
Authority: EP
Inventors: Christoph Mengel; Peter Franz; Thanh-Hao Huynh; Karlheinz Mayer; Christian Fuhse; Stefan Bichlmeier; Matthias Pfeiffer; Christof Baldus
Original assignee: Giesecke and Devrient Currency Technology GmbH
Current assignee: Giesecke and Devrient Currency Technology GmbH
Priority date: 2015-03-27
Filing date: 2016-01-13
Publication date: 2018-01-31
Also published as: CN107531078B; WO2016155859A1; DE102015004027A1; US20180117946A1; US10322601B2; HK1243978A1; CN107531078A

Abstract

The invention relates to a value and security document, which consists of a substrate with a front side and a rear side, wherein on the front side or rear side of the substrate there is an applied ink layer. A first motif in the form of a pattern, symbol or coding is incorporated in the ink layer. The first motif takes the form here of an embossing structure, which consists of a multiplicity of raised embossing elements with areas of differing orientation and shows a first tilting or moving effect when the value and security document is tilted, in that at least two different groups of embossing elements with different characteristic parameters reflect incident light in different spatial areas. The embossing elements respectively have a lateral dimension of more than 30 µm and a height of more than 10 µm. The invention also relates to a method for producing a corresponding value and security document. According to the invention, the first motif is combined with a second motif in the form of a pattern, symbol or coding, wherein the second motif is arranged on the same side of the substrate as the first motif. The second motif takes the form here of an embossing structure which consists of a multiplicity of raised embossing elements with areas of differing orientation. The embossing structure forms the second motif with a second tilting or moving effect, in that various groups of embossing elements with different characteristic parameters reflect incident light in different spatial areas. The embossing elements respectively have a lateral dimension of less than 30 µm and a height of less than 10 µm. In addition, the pattern, symbol or coding of the first motif is at least partially adapted to the pattern, symbol or coding of the second motif.

Description

Security element with effect pigments and an embossed structure and method for its production

The invention relates to a value and security document, which consists of a substrate with a front and a back, wherein on the front or back of the substrate, a color layer is applied. In the color layer, a first motif in the form of a pattern, character or a coding is introduced. The first motif is in the form of an embossed structure, which consists of a plurality of raised embossing elements with surfaces of different orientation, which are characterized by the parameters size, outline shape, relief shape, reflectivity and spatial orientation. This embossing structure shows a first tilting or movement effect when tilting the value and security document by at least two different groups of embossing elements with different characteristic parameters reflecting incident light into different spatial areas. The embossing elements each have a lateral dimension of more than 30 μιη and a height of more than 10 μηι. The invention further relates to a method for producing a corresponding value and security document.

A generic value and security document is known for example from EP 2608964 A2. Securities and security documents, such as banknotes, valuables or ID documents, but also other valuables, such as branded articles, are often provided with security elements for security that allow verification of the authenticity of the data carrier and at the same time serve as protection against unauthorized reproduction. The security elements may, for example, be in the form of a security embedded in a banknote. thread, a cover sheet for a banknote with hole, an applied security strip, a self-supporting transfer element or in the form of a directly applied to a value document feature area be formed.

A special role in the authenticity assurance play security elements, the viewing angle-dependent visual effects show, as they can not be reproduced even with the latest copiers. For this purpose, also effect pigments are used, which show different representations and thus a tilting effect at different viewing angles.

The invention has the object of developing a generic value and security document in such a way that the protection against counterfeiting is further increased.

This object is solved by the features of the independent claims. Further developments of the invention are the subject of the dependent claims.

According to the invention, the first motif is combined with a second motif in the form of a pattern, character or a coding, wherein the second motif is arranged on the same side of the substrate as the first motif. The second motif is hereby designed in the form of an embossed structure, which consists of a multiplicity of raised embossing elements with surfaces of different orientation, which are characterized by the parameters size, outline shape, relief shape, reflection capacity and spatial orientation. The embossed structure forms the second motif with a second tilting or movement effect by having different groups of embossing elements different incidental parameters reflect incident light into different spatial areas. Here, the embossing elements each have a lateral dimension of less than 30 μιη and a height of less than 10 μπι. In addition, the pattern, the character or the encoding of the first motif is at least partially adapted to the pattern, the character or the coding of the second motif.

An embossed structure with embossing elements in the form of micromirrors, each having a lateral dimension of less than 30 μπι and a height of less than 10 μιτι, is known from WO 2007/079851 AI.

In this case, a combination of an achromatic reflection of electromagnetic radiation, in particular light, at micromirrors and a coloring interference structure arranged on the surface of these micromirrors (so-called "Colorshift") is described.

By combining a first motif with a first tilting or movement effect and a second motif from an embossing structure with a second tilting or movement effect, the attention and recognition value and thus the forgery-proofing of the value and security document are significantly increased. In addition, provided by the second motif in the form of embossed structures, an optical security feature that also increases the security against counterfeiting of the value and security document, since the embossed structures can be analyzed by a counterfeiter or imitator only with increased technical effort and therefore difficult to imitate.

According to a preferred embodiment, by a logical combination of two individual effects, namely the effect pigments and the embossing elements, a larger context, the two individual effects in one better correlated and thus easier to authenticate relationship with each other. The interplay of both individual effects is formed by a meaningfulness which is only possible through their special combination and thus offers an additional possibility of authentication.

An object in the sense of this invention is, for example, a letter or text, a numeral or number, a motif, a portrait, a combination of the aforementioned objects or any geometric shape or graphic image, such as an oval, a star or a Wheel.

For the purposes of this invention, the at least partial adaptation of an image to another image or the pattern, the character or the coding of the first motif to the pattern, the character or the coding of the second motif means, for example

• there is a relationship between the two images, patterns or characters, in which, for example, in both images, the tilting of the value and security document results in a change from a graphic image, for example a star, to a value number, for example the number 50,

• both images or patterns each represent a partial image of an overall image and the overall image results in the interaction of the two partial images, for example, one image represents a first part of a digit or a text and the other image represents the remaining part of the digit or text Text or

• Both images or patterns show the same motif or appearance

• a picture a name or a name and the other picture the corresponding portrait or the corresponding picture for this Name or name; For example, the one picture shows the name "bird" as text and the other picture shows the pictorial representation of a bird or shows one picture the name of a person and the other picture the portrait of this person.

In this context, at least partially means that at least partial areas of one image, pattern or motif are adapted to partial areas of the second image, pattern or motif, wherein the remaining partial areas can show no or another dynamic movement effect. In this case, the entire area of the one image, pattern or motif is preferably adapted to a partial area or the entire area of the other image, pattern or motif.

According to the invention, a logical connection between the two motifs must therefore result for a viewer, which goes beyond mere juxtaposition or juxtaposition of individual motifs.

According to the invention, the first and second motif have a similar but not exactly the same appearance, which is due to the characteristic features of the associated, preferably different production methods. Thus, for example, a second motif can be realized by a film element (eg embossing structures in a thermoplastic or radiation-curing lacquer, which are subsequently metallized), which shines much more strongly than a first motif, which is realized by intaglio blind embossing in a screen printing ink. At the same time, for example, the area with intaglio blind embossing can be tactile, ie palpable with the fingers and, for example, noticeably rough or ribbed, while a second motif realized by a film element has a smooth surface without any noticeable relief. A viewer thus connects the two motifs and sees similar optical effects, while at the same time noticing different properties. Therefore, a counterfeiter must be able to falsify these different properties and, as a rule, will have to master two different production methods for the first and second motifs, which makes the production of a hardly distinguishable forgery much more difficult.

According to the invention, the second motif is applied on the same side of the substrate on which the first motif is located. The first and the second motif may be arranged directly or directly on the surface of the substrate. Alternatively, the second motif can also be arranged indirectly or indirectly on the surface of the substrate, in which case the second motif is arranged on a further substrate. The further substrate on which the second motif is arranged is arranged directly on the substrate or at least partially within the substrate of the security and value document. According to a further preferred embodiment, it is provided here that the second motif is arranged in the form of an embossed structure on a security thread or security strip, which is applied to the substrate or at least partially introduced into the substrate. In this case, the security thread is preferably a so-called window or pendulum thread which is embedded in the substrate and guided at certain points of the substrate to the surface of the substrate, wherein the first motif and the second motif are arranged in register with each other.

The color layer is preferably made translucent and arranged in at least a portion above the security thread or security strip. According to a preferred embodiment, it is provided that the first motif reflects two or more different image motifs into different spatial regions, so that a first tilt or motion image is created for a viewer upon corresponding movement of the value and security document. In addition, the second motif also creates the impression of a second tilt or movement image. The first tilt or movement image is now at least partially adapted to the second tilt or movement image or the second tilt or movement image at least partially to the first tilt or movement image.

This results in two tilting or moving images whose appearance is at least partially adapted to each other. For example, the first tilt or motion image shows a rotating object as the asset and security document is tilted. The second motive also gives the impression of a rotation as the asset and security document is tilted, which picks up or continues the rotation of the object of the first subject. Particularly preferably, the second motif is arranged around the first motif around and turn the two subjects in the same direction, so that the viewer the impression of a single rotating object results. In another advantageous embodiment, the rotational movements may also be opposite, resulting in a very dynamic appearing movement.

Translucency in the sense of this invention means that an object, such as the substrate or the color layer, allows light incident in a certain proportion to pass through. When light strikes one side of the object, a certain portion of the light is transmitted to the other side of the object and exits there again. The greater the percentage of transmitted light in relation to the incident light, the greater the transmittance lucent is the object. If the percentage is at least 90%, ie if the object allows the incident light to pass through almost unimpaired, as in the case of a window, the object is called transparent. On the other hand, an object that transmits about 0% of the incident light, that is, in which the amount of transmitted light is small or close to zero, is called opaque or non-translucent.

According to a further preferred embodiment, it is provided that a laser inscription is placed on at least one side of the substrate such that the laser inscription overlaps at least partially both the first motif and the second motif.

The substrate according to the invention can be designed as a single-layer or multi-layer security paper. Multi-ply security paper contains at least one ply of paper. The further layers can likewise be made of paper, but also of other materials, for example by plastic films. The security paper is particularly preferably made of cotton fibers, as used for example for banknotes.

Preferably, the substrate may also consist of paper of other natural fibers, also preferably of synthetic fibers, ie a mixture of natural and synthetic fibers or also preferably of at least one plastic film. Further preferably, the substrate consists of a combination of at least two superimposed and interconnected different substrates, a so-called hybrid, for example a combination plastic film-paper plastic film, ie a paper substrate is covered on each side by a plastic film, or paper Plastic film paper, ie a substrate a plastic film is covered on both sides by a paper substrate.

Details of the weight of the substrate used are given, for example, in the document DE 102 43 653 A9, the statements of which are fully incorporated in this application in this regard. The document DE 10243653 A9 states in particular that the paper layer usually has a weight of 50 g / m ² to 100 g / m ² , preferably from 80 g / m ² to 90 g / m ² . Of course, depending on the application, any suitable weight can be used.

Security elements or documents of value for which such a substrate or security paper can be used are, in particular, banknotes, stocks, bonds, certificates, vouchers, checks, high-quality admission cards, but also other counterfeited papers, such as passports and other identity documents, as well as Cards, such as credit or debit cards, whose card body has at least one layer of security paper, and also product securing elements, such as labels, seals, packaging and the like.

The simplified term security paper or value document includes all the above materials, documents and product securing means. According to a further preferred embodiment, it is provided that the color layer consists of at least one effect color. The effect colors are in particular substrate, flexographic or screen printing inks, in particular screen printing inks with high reflectivity and a relatively small pigment size. This property is exhibited, for example, by UV-curable screen printing inks (silver, Gold, bronze). A colourfulness can be achieved by overprinting with translucent colors. Of course, a multicolor can be displayed in this way.

Colorshift inks made from interference-layer pigments, colors based on pearlescent pigments or liquid-crystal pigments are also suitable. However, since banknote paper has a rough surface, it is advantageous to print Colorshift inks on either smooth surfaces of plastic substrates or multilayer substrates whose outer layer is a plastic layer, or to place an (invisible or visible) primer under the color layer. This primer can be applied either underground, screen or flexographic printing and smoothes the rough surface of the substrate. The screen-printed pigments are thus better aligned. In addition, due to the UV-curing binder systems, the ink film is smoother and has a higher reflectivity.

Printing inks containing magnetically-alignable effect pigments are expressly excluded from the scope of this invention because they are expensive to purchase and to process. An alignment directed effect reflective pigments is rather preferably provided by embossing, for example by means of Intaglio blind embossing.

It could be demonstrated that a higher reflectivity of the starting material causes a better optical effect of the embossing. But even a primer under the screen printing layer improves the effect, since the gloss of the optically active color surface is increased. The following table summarizes the measured gloss values by way of example: Screen printing ink 1 Screen printing ink 2 Gloss value

GD Silver 4410 224.2

OASIS Green / Blue 5 DC 0000 31.1 + 17% LC 528

Primer SICPA 5 DC 0000 OASIS Green / blue 5 DC 0000 35.6

+ 17% LC 528

OASIS Green / Blue 5 DC 0000 Primer SICPA 5 DC 0000 48.1 + 17% LC 528

OASIS Green / Cu 5 DC 0000 18.5 + 23% LC 636

Primer SICPA 5 DC 0000 OASIS Green / Cu 5 DC 0000 34.3

+ 23% LC 636

OASIS Green / Cu 5 DC 0000 + Primer SICPA 5 DC 0000 40.9 23% LC 636

Primer SICPA 5 DC 0000 OVI Magenta / Green 9Z3D50 27.0

OVI Magenta / Green 9Z3D50 Primer SICPA 5 DC 0000 38.0

GD Silver 4410 Blue GSI 680821 65

GD Silver 4410 Yellow GSI 680102 55

In this case, the screen printing ink 1 is the lower screen printing layer or the primer and the screen printing ink 2 is the upper screen printing layer, if it has been printed on a printer.

The gloss values were measured with a glossmeter "micro-gloss" from BYK-Gardner at an angle of 60 ° with respect to the vertical, the measurement results of the glossmeter are not related to the amount of light irradiated, but to a black, polished The glass standard with the defined refractive index of 1.567. For this standard, the reading is set to 100 gloss units.

While the UV silver color GD Silver 4410 alone shows a very high reflectivity, selectively reflective ink systems have much lower gloss values (15 to 30 gloss units), which can be increased to 35 to 50 gloss units by combining them with a primer. Although overprinting the UV silver color GD Silver 4410 with background colors leads to a reduction in the gloss value, the effect of the embossing is nevertheless very clearly visible.

The size of the effect pigments is also decisive for the quality of the effect, since small pigments can follow the structures of the embossing much better, whereas larger pigments can possibly break. Preferably, the size of the effect pigments is between 1 μιη to 50 μπ \, preferably between 5 μη to 25 μιη to allow embossing of the ink layer, resulting in a clearly recognizable change of information or a clearly discernible dynamic motion effect. Alternatively, the color layer can also consist of at least one vapor-deposited metal layer or of multilayer thin-film layer interference layers, which are known, for example, from WO 2009/149831 A2. Recesses in the overprinting increase the design possibilities, so that in the supervision also so-called "bimetallic" impressions (silver / gold) can be implemented, whereby a yellowish overprint on a silver background creates a golden hue. If the yellow overpressure is omitted in some areas, the result is an alternating gold-colored and silver-colored and thus "bimetallic" area.

The invention further relates to a method for producing a value and security document according to the invention, wherein the color layer is printed on the substrate with effect pigments. In this case, all known from the prior art printing methods can be used, particularly preferably the screen printing method or the flexographic printing process. In the flexographic printing process, a color layer with a high layer thickness is applied to the substrate, for example with the aid of an anilox roller an inking with a weight per unit area of 20 g / m ² .

The embossed structures are preferably produced with an embossing plate or an embossing cylinder, particularly preferably a intaglio printing plate or a gravure printing cylinder, into which the embossed structures are introduced, for example by means of lasering. The dimensions of the embossed structures are laterally more than 30 μπι, preferably more than 30 μπι to 2000 μιη, more preferably more than 30 μπι to 300 μηα and most preferably more than 30 μιη to 150 μιη and in height more than 10 μτη , Preferably more than 10 μιη to 150 μπι, more preferably more than 10 μιη to 100 μιτι and most preferably more than 10 μιη to 60 μπι.

Such embossed structures are known, for example, from WO 2013/045055 A1.

It is understood that the features mentioned above and those yet to be explained below can be used not only in the specified combinations but also in other combinations, without the frame As far as this is covered by the scope of the claims.

Reference to the following embodiments and the additional figures, the advantages of the invention will be explained. The embodiments represent preferred embodiments, to which, however, the invention should not be limited in any way. Furthermore, the representations in the figures of the better understanding are highly schematized and do not reflect the realities. In particular, the proportions shown in the figures do not correspond to the conditions present in reality and serve exclusively to improve the clarity. Furthermore, the embodiments described in the following exemplary embodiments are reduced to the essential core information for the sake of clarity. In practice, much more complex patterns or images can be used.

In detail, schematically show a section of a fiction, contemporary value and security document

1 with a first motif on a security thread and a second motif in the form of an oval imprint in a first embodiment, with a first motif on a security thread and a second motif in the form of an oval imprint in a second embodiment, with a first motif on a security thread and a second motif of an imprint in the form of a numeral, with a first motif on a security thread and a second motif of an imprint in the form of a part of a numeral, with a first motif in the form of a stripe-shaped, optical variable imprint and a second motif arranged above it, which show the same motif change when tilted.

Fig. 1 shows an oval print 1, which is printed on one side of a substrate of a banknote. The imprint 1 consists here of individual embossed structures which are not visible to a viewer and which show a second motif with a dynamic movement effect in the form of moving lines. Within the imprint 1 are recesses 2 in the form of the text "CT100" and recesses 3 in the form of the number "100".

Right next to the imprint 1 is a security thread 4, which is introduced in the form of a window thread in the substrate of the banknote. In this case, three regions of the window thread are arranged on the surface of the banknote and two regions of the pendulum thread lying between these regions are arranged inside the substrate of the banknote and thus are not visible. On the security thread 4 is a first motif 5, which, like the imprint, shows a moving effect with moving lines, this effect of movement being produced by an effect color. In the effect color are recesses 5 in the form of the text "CT100". The numeral "100" here represents the value of the banknote, which is thus located both on the security thread 4 and in the imprint 1. In this way, a viewer can recognize a logical connection between the motifs of the security thread 4 and the imprint 1. Further The viewer perceives that both motifs have the same or at least a very similar movement effect.

Fig. 2 shows a similar embodiment as Fig. 1, in which case the oval imprint 1 is printed on the surface of the bill that it overlaps the security thread 4 slightly. Furthermore, recesses 6 in the form of the number "100" in the imprint 1 are arranged in such a way that they apparently protrude beyond the edge of the imprint 1 and are continued or supplemented with imprinting with black ink outside the imprint 1. Additionally, also on the security thread 4 recesses 7 in the form of part of the text "CT100" are arranged so that they complement each other with recesses in the imprint 1 and a black imprint on the banknote to the overall text "CT100".

3 shows an imprint 8 in the form of the number "100." The outline shape of the imprint 8 thus corresponds to the recesses on the security thread 4.

In the embodiment of Fig. 4, the central portion of the security thread 4 forms part of the numeral "1" of the imprint 9. This area of the security thread and the imprint 9 thus complement each other to the number "100". This results in an additional relationship between the security thread 4 and the imprint 1 for a viewer. 5 shows in FIG. 5 a, in vertical plan view, a detail of one side of a banknote with a strip-shaped security strip 10 and an optically variable imprint 12. The optically variable imprint 12 consists of a color layer of an effect color, which in some areas forms the first motif 11 in the form shows the numeral "50", which changes into a five-pointed star during tilting The embossing structure 12 consists of embossing elements arranged in parallel, as are known, for example, from WO 2013/045055 A1, and partially shows the first motif 13.

The security strip 10 also exhibits a tipping effect between the value "50" and a five-pointed star forming the second motif here In a particularly advantageous variant, the "50" and the star may also appear arched, which in the case of a smooth-feeling security strip e.g. On film basis is particularly amazing and memorable. The realization of such tilting images with arching effect is known, for example, from WO 2014/060089 A2. When the banknote is tilted about the axis AA in the direction of the arrow, the representation of the two motifs in each case changes from the number "50" into a five-pointed star, which additionally appears three-dimensional in the security strip 10 and apparently bulges out of the surface Banknote around the axis AA show both motifs thus a similar tilting effect.

In a further variant, the motifs can also tilt just opposite. Thus, in the example mentioned the security strip 10 at a first tilt angle the star and the same tilt angle of Imprint 12, the "50" show, while at a second tilt angle then the security strip 10, the "50" and the imprint shows the star.

Claims

P a n t a n s p r e c h e

Value and security document, which consists of a substrate with a front and a back, wherein on the front or back of the substrate, a color layer is applied, in which a first motif in the form of a pattern, a character or a coding is introduced, wherein the first Motif in the form of an embossed structure is formed, which consists of a plurality of raised embossing elements with surfaces of different orientation, which are characterized by the parameters size, outline, relief shape, reflectivity and spatial orientation, and the tilting of the value and security document a first tilt or motion effect by at least two different groups of embossing elements with different characteristic parameters reflecting incident light in different spatial areas, and the embossing elements each have a lateral dimension of more than 30 μπ and a height of more than 10 μη, dadu characterized in that the first motif is combined with a second motif in the form of a pattern, character or a coding, wherein the second motif is arranged on the same side of the substrate as the first motif, wherein the second motif is in the form of an embossed structure, which consists of a plurality of raised embossing elements with faces of different orientation, characterized by the parameters size, outline, relief shape, reflectivity and spatial orientation, and which shows the second motif with a second dynamic tilting or movement effect, by at least two different groups of imprinting elements with different characteristic parameters reflect incident light into different spatial regions, and in which the embossing elements each have a lateral dimension of less than 30 μιη and have a height of less than 10 μη, wherein the pattern, the character or the coding of the first motif is at least partially adapted to the pattern, the character or the coding of the second motif.

Value and security document according to claim 1, characterized in that the first motif reflects two or more different image motifs in different spatial areas, so that the viewer with a corresponding movement of the value and security document, a first tilt or movement image is formed, and the second motif two or more different motifs reflected in different spatial areas, so that the viewer with appropriate movement of the value and security document, a second tilt or motion image is formed, the first tilt or motion image is at least partially adapted to the second tilt or movement image or the second tilt or movement image is at least partially adapted to the first tilt or movement image.

Value and security document according to at least one of the preceding claims, characterized in that the first motif is arranged on the substrate and the second motif is arranged on a security thread or security strip which is applied to the substrate or at least partially introduced into the substrate.

Value and security document claim 3, characterized in that the security thread is a window or pendulum thread embedded in the substrate and guided at certain points of the substrate to the surface of the substrate, wherein the first motif and the second motif in the register are arranged to each other.

5. value and security document claim 3 or 4, characterized in that the color layer is made translucent and is arranged in at least a portion above the security thread or security strip.

6. value and security document according to at least one of the preceding claims, characterized in that the color layer consists of at least one effect color. 7. value and security document according to at least one of the preceding claims, characterized in that a laser marking is placed on at least one side of the substrate such that the laser marking overlaps both the first motif and the second motif at least partially.

8. value and security document according to at least one of the preceding claims, characterized in that the first motif and the second motif in their interaction form a common third motif.

A method for producing a value and security document which is formed from a substrate having a front side and a rear side, wherein a color layer is applied to the front or back side of the substrate, which forms a first motif in the form of a pattern, character or a coding, wherein the first motif is formed in the form of an embossed structure consisting of a plurality of raised embossing elements with surfaces of different orientation, which are characterized by the parameters size, outline, relief shape, reflectivity and spatial orientation, and the tilting of the value and security document a first tilt or move tion effect by at least two different groups of embossing elements with different characteristic parameters reflect incident light in different spatial areas, and the embossing elements each have a lateral dimension of more than 30 μπι and a height of more than 10 μπι, characterized in that the first motif is combined with a second motif in the form of a pattern, character or a coding, and wherein the second motif is applied on the same side of the substrate as the first motif, wherein the second motif is formed in the form of an embossed structure, which consists of a plurality of raised Emboss elements is formed with areas of different orientation, which are characterized by the parameters size, outline shape, relief shape, reflectivity and spatial orientation, and form the second motif with a second tilting or movement effect by at least two different groups of Pr EEG elements with different characteristic parameters reflect incident light in different spatial areas, and in which the embossing elements each have a lateral dimension of less than 30 μηι and a height of less than 10 μιη, the pattern, the character or the coding of the first motif at least partially adapted to the pattern, character or encoding of the second motif.

10. The method according to claim 9, characterized in that the color layer is printed by a screen printing process or a flexographic printing process on the substrate

11. The method according to claim 10, characterized in that the color layer consists of an effect color.

12. The method according to claim 10 or 11, characterized in that the color layer is embossed by an Intaglio blind embossing.