EP3319812A1

EP3319812A1 - Security element and data carrier

Info

Publication number: EP3319812A1
Application number: EP16741533.0A
Authority: EP
Inventors: Björn Teufel
Original assignee: Giesecke and Devrient Currency Technology GmbH
Current assignee: Giesecke and Devrient Currency Technology GmbH
Priority date: 2015-07-10
Filing date: 2016-07-08
Publication date: 2018-05-16
Anticipated expiration: 2036-07-08
Also published as: DE102015008971A1; CN107848323B; EP3319812B1; CN107848323A; WO2017008897A1

Abstract

The invention relates to a security element for safeguarding a valuable document or a security paper, wherein the security element has a layer structure having the following layer sequence: a) a first film substrate; b) a first embossing lacquer layer; c) a first semitransparent functional layer; d) a printed layer applied on the first semitransparent functional layer; e) an adhesive layer; f) a second semitransparent functional layer; g) a second embossing lacquer layer; h) optionally a second film substrate; wherein – the first semitransparent functional layer c) forms a first motif, discernible when the front side of the security element is viewed in reflected light; – the semitransparent second functional layer f) forms a second motif, discernible when the rear side of the security element is viewed in reflected light; – the printed layer d) applied on the first semitransparent functional layer forms a hidden third motif, discernible when the security element is viewed in transmitted light both from the front side and from the rear side.

Description

Security element and disk

The invention relates to a security element for securing a

Value document or a security paper. The invention further relates to a data carrier, in particular a value document or a security paper, which is equipped with the security element.

Data carriers, in particular value documents or security papers, are usually provided with security elements for security purposes, which permit verification of the authenticity of the data carrier and at the same time serve as protection against unauthorized reproduction of the data carrier. When

Security elements come e.g. Foil security elements into consideration, which have a film substrate or plastic substrate and are applied by means of an adhesive layer on the disk.

To increase the security against counterfeiting is known such

To combine foil security elements with window areas in the value documents. A window area may e.g. be formed by means of a continuous recess in a (paper) substrate of a value document. In the case of one on a transparent polymer substrate

based value document, a window area, e.g. by means of

congruent recesses are generated in the applied on the front and back of the polymer substrate opaque print layers.

WO 95/10420 AI describes a document of value, in which the carrier is provided with a window-like opening, which is closed with an at least partially transparent cover film, wherein the

Cover film can be provided in particular in the region of the window-like opening with additional security features, such as diffraction structures. WO 2005/025891 A2 describes a data carrier with a

Foil security element, wherein both the foil security element, as well as the volume have a breakthrough area; the

Breakthrough areas preferably overlap at least partially, and more preferably they are congruent. In a further variant of the breakthrough range in the disk of the

Foils security element bearing volume side facing away from covered with another film.

WO 2010/000432 Al describes a document of value with an opening which is closed on one side with a translucent film. To increase the security against counterfeiting, both the top side and the bottom side of the document of value are provided with a translucent surface

Coating covered, which is preferably carried out over the entire surface.

Preferably, the coatings are each independently extruded or laminated.

WO 2011/015622 A1 describes a document of value having an opening which is closed on one side with an at least partially translucent or transparent film, wherein on the side of the value document opposite the film in the region of the opening and substantially in the

Area of the film surface is a coating, wherein the coating within the opening is not present or substantially absent.

WO 2014/108329 Al describes a method for producing an endless paper web for the production of security and

Value documents. The paper web is first with a continuous Opening provided. Subsequently, register-accurate application of a film with applied to the paper web security features.

Based on this, the object of the present invention is to provide a security element by means of which the protection of a data carrier equipped with the same against counterfeiting can be further increased. Another object is to provide a data carrier equipped with the security element. This object is achieved by the feature combinations defined in the independent claims. Further developments of the invention are the subject of the dependent claims.

Summary of the invention

1. (First aspect of the invention) Security element for securing a value document or a security paper, wherein the security element has a layer structure with the following layer sequence:

a) a first film substrate;

b) a first embossing lacquer layer;

c) a first semitransparent functional layer;

d) a printing layer applied to the first semitransparent functional layer;

e) an adhesive layer;

f) a second semitransparent functional layer;

g) a second embossing lacquer layer;

h) optionally a second film substrate; in which

- the consideration of the security element with a view to the first

Film substrate a) from the side opposite to the layers b) to h) defines the consideration of the security element front and the

Contemplating the security element with respect to the optional second film substrate h) defining the side of the security element from the side opposite the layers a) to g);

the first semitransparent functional layer c), when considering the

Security element front side recognizable in incident light recognizable first motif;

- The semitransparent second functional layer f) forms a recognizable when viewing the security element back in incident light second motif;

- The applied on the first semitransparent functional layer

Print layer d) forms a hidden third motif, which in the

Viewing the security element front side is not recognizable in reflected light and is obscured by the first semitransparent functional layer c) and which is not recognizable when viewing the security element back in reflected light and is obscured by the second semitransparent functional layer f) and which is considered in the consideration of Security elements in transmitted light both from the front, as well as from the back is recognizable.

The applied on the first semitransparent functional layer

Printing layer d) can be produced in particular by a gravure printing, flexographic printing, screen printing or inkjet process, wherein the

Gravure printing method is preferred.

2. (Preferred embodiment) Security element according to paragraph 1, wherein the second film substrate h) is mandatory and the security element by gluing two separate security element parts by means of the adhesive layer e) is available, wherein the first security element part of the layers a) to d) and the second security element part comprises layers f) to h). Alternatively, this is the layers a) to g) In a first step, two separate security element parts are glued by means of the adhesive layer e), wherein the first security element part comprises the layers a) to d) and the second security element part comprises the layers f) to h), and in a second step the second film substrate h) is detached from the resulting layer structure (in this case the second film substrate h) is a so-called transfer film).

3. (Preferred embodiment) A security element according to paragraph 1 or 2, wherein the second semitransparent functional layer f) is a semitransparent mirror layer, in particular a metal consisting of the group consisting of Al, Ag, Ni, Cr, Cu, Au and an alloy of a or more of the above elements is selected. 4. (Preferred embodiment) Security element according to paragraph 3, wherein the second semitransparent functional layer f) is based on Al or an Al alloy.

5. (Preferred embodiment) Security element according to one of the paragraphs 1 to 4, wherein the first semitransparent functional layer c) in the

Contemplation in reflected light on the one hand and when viewed in transmitted light on the other hand has different shades.

6. (Preferred embodiment) A security element according to paragraph 5, wherein the first semitransparent functional layer c) has a multilayer structure with two semitransparent mirror layers and a dielectric layer arranged between the two semitransparent mirror layers, which appears gold-colored in particular when viewed in reflected light and when viewed in transmitted light shows a blue hue. 7. (Preferred Embodiment) A security element according to paragraph 6, wherein the two semitransparent mirror layers are respectively selected from Al or Ag and the dielectric layer is a SiO 2 layer.

8. (Preferred embodiment) The security element according to paragraph 7, wherein each of the two semitransparent mirror layers is based on Al and has a layer thickness in a range from 5 nm to 20 nm, preferably in a range from 10 nm to 14 nm, and the dielectric Si0 ₂ Layer has a layer thickness in a range of 50 nm to 450 nm, preferably in a range of 80 nm to 260 nm, and more preferably in a range of 210 nm to 260 nm.

9. (Preferred embodiment) Security element according to paragraph 7, wherein each of the two semitransparent mirror layers is based on Ag and a

Layer thickness in a range of 15 nm to 25 nm and the dielectric Si0 ₂ layer has a layer thickness in a range of 50 nm to 450 nm, preferably in a range of 80 nm to 260 nm and more preferably in a range of 210 nm 260 nm.

10. (Preferred embodiment) Security element according to paragraph 5, wherein the first semitransparent functional layer c) is based on a printable layer having an effect pigment composition. 11. (Preferred embodiment) Security element according to one of the paragraphs 1 to 10, wherein the first embossing lacquer layer b) and the first semi-transparent functional layer c) a first optically variable structure, in particular a diffractive relief structure or hologram structure or a

micro-optical relief structure (in particular a micromirror arrangement), form and the second embossing lacquer layer g) and the second semitransparent functional layer f) a second optically variable structure, in particular a diffractive relief structure or hologram structure or a

microoptical relief structure (in particular a micromirror arrangement) form, wherein the second optically variable structure is selected independently of the first optically variable structure.

12. (Preferred embodiment) Security element according to paragraph 11, wherein the first embossing lacquer layer b) and the first semitransparent

Functional layer c) form a diffractive relief structure and the second

Embossing lacquer layer g) and the second semitransparent functional layer f) form a microoptical relief structure, or vice versa.

13. (Preferred embodiment) A security element according to any one of paragraphs 1 to 12, wherein the layer structure in addition to the layers a), b), c), d), e), f) and g) and the optionally present layer h) a over a

i) for bonding the security element to a valuable document or security paper, the adhesive layer i) in particular on the first film substrate a), on the optional second

Film substrate h) or, in the case where the film substrate h) is absent, is arranged on the second embossing lacquer layer g).

14. (Preferred embodiment) Security element according to one of the paragraphs 1 to 13, wherein the hidden third motif is in the context of meaning with the first motif and / or the second motif. 15. (Second aspect of the invention) data carrier, in particular a

A security document or security paper equipped with the security element according to one of claims 1 to 14. 16. (Preferred embodiment) Disk according to paragraph 15, wherein the

Disk is based on a disk substrate with a window area and the security element is located in the window area of the disk substrate. Detailed description of the invention

The value document mentioned in the present description may be a banknote, in particular a paper banknote, a

Polymer banknote or a foil composite banknote, a share, a bond, a certificate, a coupon, a check, a high-quality admission ticket, but also an identification card, such as a credit card, bank card, cash card, authorization card, identity card or passport personalization page act. For the purposes of this invention, viewing in incident light is illumination of the security element from one side and observation of the light

Security elements from the same page. A reflection in reflected light is thus present, for example, when the front of the security element is illuminated and also viewed.

A reflection in transmitted light is in the sense of this invention

Lighting a security element from one side and a view of the security element from another side, in particular the

opposite side. A consideration in transmitted light is thus 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 security element according to the invention can be present, for example, as a patch or label, as a (continuous) strip or as an (endless) thread.

The data carrier substrate of the data carrier to be equipped with the security element according to the invention is in particular a paper substrate or a paper-like substrate, a polymer substrate

Paper / film / paper composite substrate or a film / paper / film composite substrate. A security document provided with a window portion may be used in the case of a paper substrate, a

Paper / film / paper composite substrate or a film / paper / film composite substrate e.g. be produced by means of a continuous recess within the paper layer (s). Alternatively, the paper layer may be coated by means of a suitable liquid, e.g. by means of aqueous

Sulfuric acid solution to be made transparent in a certain range. In the case of one on a transparent polymer substrate

based value document, a window area e.g. by means of

A preferred security element comprises at least one

semitransparent functional layer, which when viewed in incident light on the one hand and when viewed in transmitted light on the other

has different shades. The two different shades are e.g. Complementary colors. Such a semitransparent

Functional layer is based, for example, on a multilayer structure with two semitransparent mirror layers and one between the two

semitransparent mirror layers arranged dielectric layer. Such a multi-layered structure, which appears gold-colored when viewed in reflected light and shows a blue hue when viewed in transmitted light, is e.g. from WO 2011/082761 AI known.

Suitable multi-layered structures with two semitransparent

Mirror layers and one between the two semitransparent

Mirror layers arranged dielectric layer preferably have the following physical nature:

the two semitransparent mirror layers are preferably selected from Al or Ag; the dielectric layer is in particular an SiO ₂ layer;

in the case where each of the two semitransparent mirror layers is based on Al, the respective preferred layer thickness is in a range of 5 nm to 20 nm, particularly preferably in a range of 10 nm to 14 nm; the SiO ₂ dielectric layer preferably has a layer thickness in a range of 50 nm to 450 nm, more preferably in a range of 80 nm to 260 nm, and particularly preferably in a range of 210 nm to 260 nm, wherein the ranges of 80 nm up to 100 nm and from 210 nm to 240 nm are especially preferred for providing a gold / blue color change;

in the case where each of the two semitransparent mirror layers is based on Ag, the respective preferred layer thickness is in a range of 15 nm to 25 nm; the SiO ₂ dielectric layer preferably has one

Layer thickness in a range of 50 nm to 450 nm, more preferably in a range of 80 nm to 260 nm, and particularly preferably in a range of 210 nm to 260 nm, wherein the ranges of 80 nm to 100 nm and 210 nm to 240 especially preferred for providing a gold / blue color change. The aforementioned multilayered layer structures not only enable the production of a semitransparent functional layer, which appears golden when viewed in reflected light and shows a blue hue when viewed in transmitted light, but depending on the choice of the layer thickness, in particular of the dielectric layer further color changes can be generated, eg

Magenta in transmitted light, blue-green in transmitted light;

- in incident light turquoise, in transmitted light orange-yellow;

- in reflected light gold, in transmitted light blue - violet;

- in reflected light silver, in transmitted light violet.

A semitransparent functional layer, which when viewed in incident light on the one hand and when viewed in transmitted light on the other

has different shades, can further on a

Effect pigment composition based. Printed layers based on an effect pigment composition which, when viewed in reflected light, exhibit 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, for example in WO 2011/064162 A2

described.

In a preferred security element, the first motif recognizable when viewed in front of the security element frontside represents a hologram (i.e., the first embossing lacquer layer b) and the first one

semitransparent functional layer c) form a diffractive relief structure or hologram structure), and the second motif which can be recognized by the reflection of the rear side of the security element is based on a second motif

Micro-optical relief structure, in particular a micromirror arrangement (ie the second embossing lacquer layer g) and the second semitransparent functional layer f) form a microoptical relief structure, in particular a micromirror arrangement). The production of a micro-optical relief structure is known in the art (see, for example, WO

2014/060089 A2).

According to an alternative to the above preferred security element, the first motif, which is discernable when the security element front side is viewed in reflected light, is based on a microoptical relief structure,

in particular a micromirror arrangement, and the second motif recognizable when viewing the security element rear side in reflected light constitutes a hologram.

According to another alternative to the above two preferred security elements, both when considering the

Security element front recognizable in reflected light first motif, as well as the recognizable when looking at the security element back in incident light second motif each represents a hologram. According to another alternative to the above three preferred

Security elements are based both when looking at the

Security element front recognizable in reflected light first motif, as well as the view of the security element back in incident light recognizable second motif each on a micro-optical relief structure, in particular a micromirror arrangement.

In the security element according to the invention, the first motif, the second motif and the third motif independently of each other in the form of a Pattern or an image, in the form of characters or a string or in the form of an encoding.

According to the invention it is provided that on the first

semitransparent functional layer applied pressure layer d) forms a hidden third motif, which in the consideration of

Front side of the security element is not recognizable in reflected light and is obscured by the first semitransparent functional layer c) and which is not recognizable when viewing the security element back in incident light and is obscured by the second semitransparent functional layer f), and this when viewing the security element in FIG Transmitted light can be seen from the front as well as from the back. The third motif may e.g. by gravure printing, flexographic printing, screen printing or by an inkjet process, preferably by means of intaglio printing. The third motif may e.g. in the form of a character or a string, in the form of a coding, in the form of a pattern, a picture or a portrait.

Further exemplary embodiments and advantages of the invention are explained below with reference to the figures, in the representation of which a representation true to scale and proportion has been dispensed with in order to increase the clarity.

Show it:

Figure 1 shows the top view of a document of value with a

Window area and arranged above the window area security element; FIG. 2 shows the cross-sectional view of the value document shown in FIG. 1;

3 shows the window area of a value document according to a

Embodiment in the consideration of

Front side of the document of value in incident light;

FIG. 4 shows the window area of a value document in accordance with FIG

Embodiment when viewing the back of the document of value in reflected light;

FIG. 5 shows the window area of a value document according to FIG

Embodiment when viewing the front or the back of the document of value in transmitted light;

Figures 6 to 9 an example of the production of a

security elements according to the invention;

9 shows a security element according to a

Embodiment;

FIG. 10 shows the security element of FIG. 9, which additionally has a

Has adhesive layer.

FIG. 1 shows a value document 1, in the present example a banknote, in plan view. The value document 1 is based on a paper substrate and has a window area 2 (shown in dashed lines). The window area 2 can, for example, by means of a continuous generated by punching Aperture can be obtained in the paper substrate. The value document 1 is provided on its front side with a security element 3, which covers the window area 2 of the value document 1 on one side. FIG. 2 shows the value document 1 of FIG. 1 in a cross-sectional view (along the line A-A 'shown in FIG. 1).

The value document 1 is based on a paper substrate 4, which has a

having breakthrough recess 2. The recess 2 was produced by punching and is present in the paper substrate 4 when viewed in plan view in the form of a square with the dimensions 1cm x 1cm (the

Dimensions can be chosen arbitrarily, as well as the shape of the window or the recess). The value document 4 is provided on the front side with a film security element 3, which covers the breakthrough recess 2 on one side. The film security element 3 is by means of a peripheral adhesive layer (not shown in the figure) on the

Paper substrate 4 attached.

FIG. 3 shows the window area 2 of the document of value 1 according to an exemplary embodiment when viewing the front side in incident light. The viewer perceives a metallic hologram motif 5.

FIG. 4 shows the window area 2 of the value document 1 according to FIG

Embodiment when viewing the back in incident light. The viewer perceives the areas 6 and 7 in the form of a golden color. The area 6 forms the denomination of the banknote "50" and appears to the viewer as compared to the background 7 in the form of a deceptively real, three-dimensional curved surface. FIG. 5 shows the window region 2 of the document of value 1 when viewed in transmitted light, from the front or the back side. The observer perceives the white area 8 in the form of a blue background in front of which the blackened characters 9 (which in the example represent the denomination "50" of the banknote) stand out clearly.

FIGS. 6 to 10 illustrate an example for producing the security element 3 shown in FIGS. 1 to 5.

Figure 6 shows the manufacture of a first security element part, in which an embossing lacquer layer 11 is first applied to a film substrate 10 (for example a polyethylene terephthalate film). The embossing lacquer layer 11 may be e.g. are based on a UV-curable varnish, which is printed on the film substrate 10, then provided with an embossed pattern and finally UV-crosslinked. On the embossing lacquer layer 11 is then by means of an AI / S1O2 / Al layer sequence (in the figure, the denote

Reference numerals 12 and 14 respectively, an Al layer, reference numeral 13 denotes an Si0 ₂ layer) generates a subject.

The provision of the motif shown in FIG. 6, formed by the layer sequence 12 to 14, can e.g. by means of a washing process known in the prior art, in which the carrier film 10 and the embossing lacquer layer 11 applied thereto are first coated with an ink which can be activated with suitable solvents ("washing ink") in the form of

Character is printed, is successively provided with an aluminum layer, with a Si0 ₂ layer and with another layer of aluminum and finally the ink together with the directly above it

Areas of the AI, S1O2 and Al layers by washing with a Liquid is removed to produce coating-free areas in the form of the characters. Suitable printing inks are described, for example, in WO

97/23357. Alternatively, however, the motif shown in FIG. 6 formed by the layer sequence 12 to 14 can also be produced by laser demetalization or by etching, optionally with the aid of any photoresist layers that may be present. The use of photoresist coatings in security element fabrication is e.g. from EP 2 049 345 B1. In FIG. 6, the Al layer 12, the SiC layer 13 and the Al layer 12 form

Layer 14 together a semitransparent functional layer 15, which appears golden when viewed in reflected light and shows a blue hue when viewed in transmitted light. Such a multi-layered structure, which appears gold-colored when viewed in reflected light and shows a blue hue when viewed in transmitted light, is e.g. known from WO 2011/082761 AI.

According to FIG. 7, the semitransparent functional layer 15 is formed by gravure printing with a black which forms the hidden motif

Printed layer 16 provided.

The semitransparent functional layer 15 shown in FIGS. 6 and 7 forms the motif shown in FIG. The observer takes the semitransparent functional layer 15 when viewing the

Security elements 3 in incident light through the layers 10 and 11 through in the form of areas 6 and 7 metallic golden true. The area 6 forms the denomination of the banknote "50" and appears to the viewer in the form of a deceptively real, three-dimensionally curved surface compared to the background 7. The three-dimensional impression can thereby be generated be that the embossing lacquer layer 11 with a micro-optical

Relief structure equips. The production of a micro-optical

Relief structure is known in the art (see for example WO

2014/060089 A2).

Figure 8 shows the fabrication of a second security element portion in which an embossing lacquer layer 18 is first applied to a film substrate 17 (e.g., a polyethylene terephthalate film). The embossing lacquer layer 18 may e.g. are based on a UV-curable varnish, which is printed on the film substrate 17, then provided with an embossed pattern and finally UV-crosslinked. On the embossing lacquer layer 18, a motif is subsequently produced by means of a semitransparent Al layer 19. The exact generation of the motif may e.g. by means of a washing process, by laser demetallization or by an etching process, as described above.

The semitransparent functional layer 19 shown in FIG. 8 forms the hologram motif 5 shown in FIG. 3. The observer takes the semitransparent functional layer 19 when viewing the

Security elements 3 in incident light through the layers 17 and 18 through metallic shiny true. The generation of the hologram motif 5 is based on the embossing lacquer layer 18 having a diffractive

Relief structure equips. FIG. 9 shows the step of bonding the first security element part shown in FIG. 7 to the second one shown in FIG

Security element part by means of an adhesive layer 20. As can be seen, the bonding of the two security element parts is accurate register, so that the hidden motif forming pressure layer 16 on the one hand the semi-transparent functional layer 15 and on the other hand by the semi-transparent functional layer 19 is covered.

The printed layer 16 forming the hidden motif is taken by the viewer in transmitted light, both from the front side and from the rear side, in the form of the black characters 9 shown in FIG. 5 in front of blue

Background 8 true. The blue background 8 is based on the semitransparent functional layer 15, which appears gold-colored when viewed in reflected light and shows a blue hue when viewed in transmitted light (and which consists of the Al layer 12, the Si0 ₂ layer 13 and the Al Layer 14 is composed).

According to FIG. 10, the security element can be provided, via an optional primer layer 21, with an adhesive layer 22 for bonding to a valuable document substrate or security paper substrate. FIG. 10 shows the case that the adhesive layer 22 is attached to the film substrate 17. Alternatively, the adhesive layer 22 could be attached to the film substrate 10 via an optional primer layer.

Furthermore, the film substrate 17 shown in FIG. 10 is merely optional, ie the film substrate 17 is not absolutely necessary. The layer structure shown in FIG. 9, which can be obtained from a first security element part according to FIG. 7 and a second security element part from FIG. 8, can also be obtained by virtue of the second security element part according to FIG a removable film substrate 17 is equipped. The removable film substrate 17 can be removed from the layer structure shown in FIG Adhesive layer 22 over an optionally present primer layer 21 applies.

The security element according to FIG. 10 represents the security element 3 shown in FIG. 2 arranged in the window area 2 of the value document 1. When the front side of the value document 1 is viewed in incident light, the viewer perceives the motif created by the semitransparent functional layer 15 (see FIG 4). When viewing the back side of the value document 1 in incident light, the observer perceives the motif generated by the semitransparent functional layer 19 (see FIG. 3). When viewing the value document 1 in transmitted light, whether from the front or the back, the viewer perceives the hidden printing information 16 (see FIG. 5).

Claims

Patent claims

A security element for securing a value document or a security paper, wherein the security element has a layer structure with the following layer sequence:

a) a first film substrate;

b) a first embossing lacquer layer;

c) a first semitransparent functional layer;

d) a printing layer applied to the first semitransparent functional layer;

e) an adhesive layer;

f) a second semitransparent functional layer;

g) a second embossing lacquer layer;

h) optionally a second film substrate; in which

- the consideration of the security element with a view to the first

Film substrate a) from the side opposite to the layers b) to h) defines the viewing of the security element front side and the viewing of the security element with regard to the optional second film substrate h) from the side opposite to the layers a) to g) the security element back defined;

the first semitransparent functional layer c) forms a first motif that can be recognized when viewing the security element front side in reflected light;

- The semitransparent second functional layer f) forms a recognizable when viewing the security element back in incident light second motif; the pressure layer d) applied on the first semitransparent functional layer forms a hidden third motif, which in the case of

Contemplation of the security element front side is not recognizable in reflected light and is obscured by the first semitransparent functional layer c) and that when viewing the security element back in incident light is not recognizable and is obscured by the second semitransparent functional layer f) and that can be seen when viewing the security element in transmitted light both from the front side and from the rear side.

2. Security element according to claim 1, wherein the security element by gluing two separate security element parts by means of

Adhesive layer e) is available, wherein the first security element part comprises the layers a) to d) and the second security element part comprises the layers f) to h), wherein after bonding optionally the second film substrate h) is detached from the resulting layer structure ,

3. Security element according to claim 1 or 2, wherein the second

semitransparent functional layer f) is a semitransparent mirror layer, in particular a metal selected from the group consisting of Al, Ag, Ni, Cr, Cu, Au and an alloy of one or more of the aforementioned elements.

4. The security element according to claim 3, wherein the second semitransparent functional layer f) is based on Al or an Al alloy.

5. Security element according to one of claims 1 to 4, wherein the first semitransparent functional layer c) when viewed in incident light on the one hand and when viewed in transmitted light on the other

has different shades.

6. The security element according to claim 5, wherein the first semitransparent functional layer c) has a multilayer construction with two

semitransparent mirror layers and one between the two Semitransparent mirror layers arranged dielectric layer which appears gold-colored in particular when viewed in reflected light and shows a blue hue when viewed in transmitted light.

7. The security element according to claim 6, wherein the two semitransparent mirror layers of Al or Ag are selected and the dielectric layer is a SiC layer.

8. The security element according to claim 7, wherein each of the two

semitransparent mirror layers based on Al and has a layer thickness in a range of 5 nm to 20 nm, preferably in a range of 10 nm to 14 nm, and the dielectric SiC layer has a layer thickness in a range of 50 nm to 450 nm, preferably in a range of 80 nm to 260 nm.

9. Security element according to claim 7, wherein each of the two

Semitransparent mirror layers based on Ag and has a layer thickness in a range of 15 nm to 25 nm and the dielectric Si0 ₂ - layer has a layer thickness in a range of 50 nm to 450 nm, preferably in a range of 80 nm to 260 nm.

10. The security element according to claim 5, wherein the first semitransparent functional layer c) is based on a printable layer having an effect pigment composition.

11. The security element according to claim 1, wherein the first embossing lacquer layer b) and the first semitransparent functional layer c) form a first optically variable structure, in particular a diffractive relief structure or a microoptical relief structure, and the second Embossing lacquer layer g) and the second semitransparent functional layer f) form a second optically variable structure, in particular a diffractive relief structure or a microoptical relief structure, wherein the second optically variable structure is selected independently of the first optically variable structure.

12. The security element according to claim 11, wherein the first embossing lacquer layer b) and the first semitransparent functional layer c) are a diffractive one

Form relief structure and the second embossing lacquer layer g) and the second semitransparent functional layer f) form a micro-optical relief structure, or vice versa.

13. Security element according to one of claims 1 to 12, wherein the

Layer structure in addition to the layers a), b), c), d), e), f) and g) and the optionally present layer h) has an adhesive layer i) for bonding the security element with a value document or security paper.

14. Security element according to one of claims 1 to 13, wherein the hidden third motif is in the context of meaning with the first motif and / or the second motif.

15. A data carrier, in particular a valuable document or a security paper, which is equipped with the security element according to one of claims 1 to 14.

16. A data carrier according to claim 15, wherein the data carrier on a

Disk substrate based with a window area and that Security element is arranged in the window region of the data carrier substrate.