EP3228471B1 - Security document with view window - Google Patents

Description

The invention relates to a security document, such as a banknote, identification card and the like, with a substrate having a see-through window, wherein in the region of the see-through window, a first layer and a second layer are arranged one above the other.

Data carriers, such as valuables or identity documents, but also other valuables, such as branded articles, are often provided with security elements for the purpose of security, which permit verification of the authenticity of the data carrier and at the same time serve as protection against unauthorized reproduction. Increasingly transparent security features, such as transparent windows in banknotes, are becoming increasingly attractive.

For producing a window, for example, a film provided on all sides with an adhesive layer on a side is applied to a paper substrate in order to close a previously inserted through opening. In other configurations, the substrate of the banknote is based on a per se transparent polymer substrate, which is provided in partial areas with a covering ink-receiving layer and whose uncoated portions in this way form transparent windows in an opaque environment.

Typically, security features, for example based on optically variable colors, are provided in such a viewing window. The protection is based, however, only on the limited availability of the special color, while the complexity of the pressure is usually low and therefore the security feature can often be readjusted with a barely distinguishable color for the layman. Often it is not easy for a viewer to understand why such a color works is applied in the see-through window, as in viewing and supervision no significantly different appearance can be seen.

The document DE 10 2004 051 919 A1 discloses a security document according to the preamble of claim 1.

Based on this, the present invention has for its object to provide a security document of the type mentioned, in which the see-through window is visually attractive and tamper-proof. This object is solved by the features of the independent claims. Further developments of the invention are the subject of the dependent claims.

The general statement that the first and second layer are arranged one above the other means here that the layers have an overlap in a projection perpendicular to the substrate surface, that is, they are not completely adjacent to one another. Since the first and second layers are arranged one above the other in the region of the see-through window, the second layer is arranged in the see-through window in the region of the first layer. If reference is made to the arrangement of a plurality of layers located on the same substrate side, the directional indications "above" and "below" always proceed from the substrate so that a layer farther from the substrate lies "above" a layer closer to the substrate , and these accordingly "under" the more distant layer.

In this case, the first layer can completely cover the see-through window, in which case the see-through information is essentially given by the motif-shaped subregion of the second layer which lies in the see-through window. At present, however, it is preferred that the first layer in the see-through window has a recess, in particular in the form of a motif, so that the see-through information which is discernible when looking through the transparency is not only formed by the motif-shaped image Part of the second layer, but also by the particular motif-shaped recess of the first layer is co-determined.

The recess of the first layer can be formed, for example, in the form of a first motif, which is partially or completely overlapped by the motif-shaped partial region of the second layer as a second motif. The recognizable transparency information is then obtained by an interaction of the first and second motif of the first and second layer.

In a further advantageous embodiment, the first layer has a recess in the form of a first motif, which is closed again by the second layer in the see-through window, so that when viewed from the side of the first layer, a non-optically variable motif can be seen differs from the non-optically variable motif recognizable when viewed from the side of the second layer.

The first layer advantageously contains optically variable interference layer pigments, preferably interference layer pigments having an at least five-layer structure with a first absorber layer, a first dielectric layer, a reflector layer, a second dielectric layer and a second absorber layer. With particular advantage, the optically variable interference layer pigments are magnetic and then advantageously have an at least seven-layer structure with a first absorber layer, a first dielectric layer, a first magnetic layer, a reflector layer, a second magnetic layer, a second dielectric layer and a second absorber layer.

However, the first layer need not be formed by a print layer. It may also be formed, for example, by a translucent thin-film element preferably formed by a vacuum vapor method, which includes a reflective layer, an absorber layer and a dielectric spacer layer disposed between the reflective layer and the absorber layer, or which has an alternating sequence of high and low refractive dielectric layers. Such a thin-film element can form the first layer together with its carrier film, but the carrier film can also be removed after a transfer of the thin-film element, so that only the thin-film element itself remains as the first layer in the layer structure. In other configurations, the first layer is formed by a translucent embossed structure, in particular in the form of embossed and translucently coated micromirrors. Again, the embossed structure may be integrated with or without carrier film as the first layer in the security document.

In an advantageous embodiment, it is provided that the second layer lies completely within the area covered by the first layer.

The second layer may be partially within and partially outside the see-through window, however, in some configurations it is preferred that the second layer be completely within the see-through window.

In an advantageous embodiment of the security document, it is provided that the first layer lies partly inside and partly outside the see-through window. For example, the area outside the see-through window may form a window frame for the see-through window or may also appear as a sub-element of the first layer and contribute to the first supervisory information in a complementary or visually supportive manner.

In a further development of the invention, the first layer is provided with a laser marking, which is recognizable only when viewed from the side of the first layer as optically non-variable and non-colored marking against the background of the optically variable effect layer.

Said substrate is advantageously opaque outside the see-through window.

In an advantageous variant of the invention, the see-through window is formed by a continuous opening in the substrate, which is closed by a transparent film element. In an alternative, likewise advantageous variant, the see-through window is formed by a transparent subregion of an otherwise opaque substrate.

The first and second layers may be on the same side of the substrate, but presently it is preferred that the two layers be on opposite sides of the substrate and thus on opposite sides of the see-through window.

The second layer may in particular be formed by two or more subregions of different opaque colors, advantageously with substantially the same hiding power. The different colors of the subregions are particularly advantageous in the color wheel adjacent to Goethe, so are in particular two adjacent colors of the sequence yellow, orange, red, purple, blue, green, and yellow again. Advantageously, the different colors of the subregions are designed so that these one have similar hue as the first layer when viewed from different viewing directions.

It is understood that in the region of the see-through window, more than the two mentioned layers can be present one above the other. For example, the second layer may be combined with a transparent color layer, which may also have a different hue than the second layer. In addition to the second layer, at least one further opaque, optically non-variable layer may be provided on the opposite side of the substrate, which is likewise arranged at least partially in the see-through window and formed there motif-like. The opaque layers can be viewed as viewed in both adjacent to one another and overlapping, wherein in the latter case in the overlapping areas a particularly strong cover is produced in transparency.

In addition to the first layer, it is also possible to provide at least one further translucent, optically variable effect layer which is present on the same or the opposite side of the substrate as the first layer. The at least one further translucent effect layer advantageously has a similar translucency as the first layer, ie a transmission which differs from the transmission of the first layer by 10% or less. In an advantageous embodiment, the translucent effect layers complete to form an overall motif.

The first and second layers can be applied in the inventive method with the same or different printing methods, in particular offset, indirect high pressure, intaglio, flexo, screen, laser, injection pressure in question as printing. Particularly preferably, the first layer is applied by screen printing, gravure printing or flexographic printing.

It is also possible to apply the first and / or second layer by means of a transfer film method, for example in cold foil transfer. For example, the first layer can be applied by means of sputtering or by a vacuum vapor deposition method to a transparent carrier foil, which is subsequently applied in the window region of the substrate. The motif formed by the first layer can be produced by a washing process or by laser ablation. In a further advantageous variant, the carrier film to be applied additionally contains the second layer. In this case, a particularly good register can be realized because the washing color for structuring the first layer and the opaque color of the second layer in one operation, such as a gravure printing step, can be applied.

According to a further advantageous embodiment, the first layer is additionally provided with a micromirror grid, which in particular generates a dynamic movement effect or a 3D effect.

In an advantageous development, the first layer contains magnetically alignable pigments and these are magnetically aligned in the form of a desired pattern during or shortly after the application of the first layer.

According to an expedient development, the first layer can also be exposed to laser radiation in order to produce an optically non-variable and non-colored laser marking in the first layer.

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.

Fig. 1

eine schematische Darstellung einer Banknote mit einem Durchsichtsbereich nach einem Ausführungsbeispiel der Erfindung,

Fig. 2

einen Querschnitt durch die Banknote der Fig. 1 im Bereich des Durchsichtsbereichs entlang der Linie II-II,

Fig. 3

das Erscheinungsbild der Banknote der Fig. 1 bei Auflichtbetrachtung der Oberseite der Banknote,

Fig. 4

in (a) das Erscheinungsbild der Banknote der Fig. 1 bei senkrechter Auflichtbetrachtung der Unterseite und in (b) das Erscheinungsbild bei schräger Auflichtbetrachtung der Unterseite,

Fig. 5

das Erscheinungsbild der Banknote der Fig. 1 in Durchsichtsbetrachtung,

Fig. 6

in (a) bis (g) verschiedene vorteilhafte Schichtenfolgen erfindungsgemäßer Sicherheitsdokumente,

Fig. 7

in (a) bis (c) Zwischenschritte in einem bevorzugten Herstellungsverfahrens für ein erfindungsgemäßes Sicherheitsdokument, und

Fig. 8

eine vorteilhafte Abwandlung des Ausgestaltung der Figuren 2 bis 5.

Show it:

Fig. 1

a schematic representation of a banknote with a see-through area according to an embodiment of the invention,

Fig. 2

a cross section through the banknote of Fig. 1 in the area of the viewing area along the line II-II,

Fig. 3

the appearance of the banknote the Fig. 1 in reflected light the top of the banknote,

Fig. 4

in (a) the appearance of the banknote Fig. 1 with vertical reflected light view of the underside and in (b) the appearance with an oblique incident light viewing of the underside,

Fig. 5

the appearance of the banknote the Fig. 1 in transparent view,

Fig. 6

in (a) to (g) various advantageous layer sequences of security documents according to the invention,

Fig. 7

in (a) to (c) intermediate steps in a preferred manufacturing process for a security document according to the invention, and

Fig. 8

an advantageous modification of the embodiment of FIGS. 2 to 5 ,

The invention will now be explained using the example of hedging a banknote. Fig. 1 shows a schematic representation of a banknote 10, the paper substrate 12 has a dashed line indicated through opening 14, which printed on the top of the bill by a translucent Film strip 16 is closed and thereby forms a see-through area 18 in the banknote 10.

The see-through area 18 or the layers applied in its area show, in viewing and supervision from the opposite sides of the banknote 10, respectively different information and different visual appearances, their complex interplay with respect to FIG FIGS. 2 to 5 is explained in more detail. It shows Fig. 2 to explain the layer structure a cross section through the banknote 10 in the vicinity of the see-through region 18 along the line II-II of Fig. 1 , The different appearances of the banknote are in the FIGS. 3 to 5 illustrated, where Fig. 3 shows the appearance when reflected light of the top 24 of the bill, Fig. 4 (a) shows the appearance in vertical incident light observation of the underside 26, Fig. 4 (b) the appearance of oblique incident light view of the bottom 26 shows, and Fig. 5 the appearance in a transparent view shows.

In the schematic representation of Fig. 2 the opening 14 of the banknote 10 closed with the film strip 16 is shown generally as a transparent window area 22 in a substrate 20 for the sake of simplicity. On the upper side 24 of the substrate 20, a first layer 30 in the form of a translucent, optically variable effect layer is printed, which contains magnetic, optically variable interference layer pigments. As best in the supervision of Fig. 3 The first layer 30 completely covers the window region 22 or the opening 14 and is also applied in the form of a motif, in the form of a distorted star in the exemplary embodiment.

The interference layer pigments of the first layer 30 were magnetically aligned three-dimensionally in the form of a beam 32 when the printing ink was applied. As a result of this alignment, when the layer 30 or the banknote 10 provided therewith is tilted back and forth, a kinematic effect is produced in the form of an optically moving beam 32, as indicated by the arrows 34, 36 in FIG Fig. 3 indicated.

In another embodiment, the portion 32 may also be provided with embossed structures in order to achieve the desired three-dimensional effect. For example, an arrangement of impressed micromirrors can produce the visual impression of a three-dimensional spherical cap. In such an embodiment, the first layer 30 does not have to contain any magnetically alignable pigments, but can be formed, for example, on the basis of non-magnetic optically variable interference pigments.

The first layer 30 can be printed, for example, with a screen printing ink based on OVMI® pigments from SICPA and even aligned in the printing machine by a magnet in the desired shape. The optically variable pigments show in addition to the magnetic alignment in bar form 32 when tilting a color change, in the embodiment between magenta in vertical and violet in oblique view.

On the underside 26 of the substrate 20, a second layer 40 is printed in the form of an opaque, optically non-variable layer, for example in offset printing. As in the supervision of Fig. 4 (a) 2, the second layer 40 is printed in the form of a flag, which has an annular recess 42 in the window region 22, in the interior of which there is a further subregion 44 of the second layer in the form of the letter "A". As in Fig. 2 and 4 (a) To recognize, the second layer 40 is partially printed outside and partially within the window portion 22. As a result of the annular recess 42 and the letters 44 in the interior of the recess 42, both the second layer as a whole and the subregion of the second layer 40 arranged within the window region 22 are designed to be motif-shaped.

In addition, the second layer 40 consists of several, for example, two different-colored opaque portions that form a desired pattern or additional information in the second layer. For example, the in-flag small star 46 is printed with a blue color formed on the basis of a blue colored pigment and a colorless opacifying TiO ₂ based pigment. By contrast, the letter 44 lying in the recess 42 and the remainder of the flag 48 are printed with a violet printing ink containing a violet colored pigment and TiO ₂ as a colorless covering pigment.

In a supervisory view of the banknote 10 thus secured from its top side 24, the appearance of the banknote is dominated by the optically variable first layer 30. For the viewer, the optically variable effect of the first layer 30, whose color impression changes from magenta when viewed perpendicularly to violet when viewed obliquely, becomes clear. At the same time when tilting the banknote and the beam 32 seems to run back and forth, as in Fig. 3 shown (arrows 34, 36). As a result of these optical effects and the strong color effect of the first layer 30 when viewed in reflected light, the presence of a window region 22 is virtually non-existent, despite the translucency of the first layer 30.

When the banknote 10 is viewed from the underside 26, the observer sees the flag formed by the second layer 40 with the motif formed by the differently-colored opaque subareas (violet subregions 44 and 48 or blue subarea 46). In addition, in the region of the annular recess 42 on the underside 26, the optically variable color 30 of the top 24 visible, optionally including the current bar 32. The recognizable from the back forth supervisory information is therefore by a combination of the second layer 40 with that in the window area 22, in particular in the recess 42 visible part of the first layer 30 given.

At the in Fig. 4 (a) The optically non-variable and therefore color-constant second layer 40 appears violet, while the color-variable first layer 30 appears magenta through the recess 42. When tilting the banknote in an oblique position, as in Fig. 4 (b) As shown, the color of the color variable first layer 30 changes from magenta to violet while the color impression of the color constant second layer 40 remains unaltered violet. From the oblique viewing direction of Fig. 4 (b) Therefore, the flag and the recess 42 with the underlying first layer 30 therefore appears with a substantially same hue, so that the recess 42 visually withdraws or even no longer appears. It can disappear because of the lack of contrast and the information in the form of the letter 44 for the viewer. The bar 32, which can also be seen from the underside, also appears to run when the banknote 10 is tilted and, depending on the design, can also run out of the region of the recess 42 or into the recess 42.

At the in Fig. 5 1, the color difference of the differently-colored opaque partial regions 44, 46, 48 visually appears strong and the second layer 40 and the substrate 20 appear as a more or less homogenous dark surface 50. The visual impression is made in view of the brightness difference between the two annular recess 42 on the one hand and the letters contained in the interior of the recess 44 and the surrounding opaque coating or the surrounding opaque substrate on the other hand dominates. The annular recess 42 appears to be uniformly bright, since the translucent layer 30 transmits part of the incident light and the different magnetic orientation of the interference layer pigments in the transmitted light is practically not recognizable.

The observer thus receives different but closely related and closely related supervisory or review information in the supervisory view from the top or bottom side and the review view. Through this connection, the respective information is linked together and put into relation, whereby an increased attention and recognition value for the user and thus increased counterfeit security of the banknote 10 can be achieved.

Fig. 8 shows an advantageous modification of the embodiment of FIGS. 2 to 5 in which the optically variable first layer 30 does not completely cover the window area 22, but is provided with a motif-shaped recess 34 in which the second optically non-variable layer 40 is visible. In this way, the presence of a window area 22 in the banknote 10 is also very easy to recognize for a layman. In addition, through the interaction of the motif forms of the first and second layer complex Supervision / see-through effects are generated. It is also possible that the second layer 40 does not overlap at least a portion of a recess 34 in the first layer 30, so that there is an open window area with high translucency in this subarea.

Fig. 6 shows various advantageous layer sequences of security documents according to the invention. As mentioned, the directional information "above" or "below" in the directional information is taken from the substrate, so a layer further from the substrate is above a layer closer to the substrate.

In the embodiment of Fig. 6 (a) For example, both the first layer 30 and the second layer 40 are disposed in the window area 22 on the same side of an opaque substrate 20, the first translucent layer 30 overlying the second opaque layer 40. The top and bottom appearances are similar in the embodiment of the FIGS. 2 to 5 however, as viewed from the bottom 26, only the portions of the opaque layer 40 lying in the window area 22 are visible. In this embodiment, the second layer 40 may therefore suitably lie completely within the window region 22. The second layer 40 may be formed in particular by two or more subregions of different opaque colors with the same hiding power. The second layer 40 may also be combined with a transparent color, which may also have a different hue. The first layer 30 may optionally be provided with a recess 34, in particular a recess in motif form, in which the second layer 40 is visible. At least a portion of the recess 34 may also form an open window area without an overlapping second layer 40.

Also in the design of the Fig. 6 (b) For example, both the first layer 30 and the second layer 40 are disposed in the window area 22 on the same side of the substrate 20, however, in this configuration, the first translucent layer 30 lies beneath the second opaque layer 40. The appearances in plan and see are similar as in the embodiment of FIGS. 2 to 5 However, when viewed from the top 24 only the part lying in the window portion 22 of the optically variable layer 30 is visible. Again, the second layer 40 may be formed in particular by two or more portions of different opaque colors with the same hiding power. The second layer 40 may also be combined with a transparent color, which may also have a different hue. The first layer 30 can optionally be provided with a recess 34, in particular a recess in motif form, in which the second layer 40 is visible or an open window area is formed.

In the embodiment of Fig. 6 (c) For example, the first and second layers 30, 40 are disposed on opposite sides of the substrate 20, as already described in connection with FIGS FIGS. 2 to 5 and 8th described in detail.

The design of the Fig. 6 (d) builds on the design of the Fig. 6 (c) on, wherein in addition a further opaque, optically non-variable layer 60 is provided on the upper side 24 of the substrate 20, which is at least partially disposed in the window portion 22 and formed there motivic. The two opaque layers 40, 60 can be viewed as viewed both adjacent to each other and overlapping.

Finally, the design of the Fig. 6 (e) on the design of Fig. 6 (d) on, on the underside 26 of the substrate 20 in addition a further translucent, optically variable effect layer 62 is provided, which is the window area 22 at least partially covered. The two opaque layers 40, 60 can be viewed as viewed both adjacent to each other and overlapping. The further translucent effect layer 62 advantageously has a similar translucency as the first layer 30, and particularly advantageously the effect layers 30, 62 of the top and bottom are completed. Alternatively, the effect layer 62 may also be disposed on and cooperate with the same side as the first layer 30 to produce a translucent effect coating.

The design of the Fig. 6 (f) is a modification of the design of the Fig. 6 (d) in which the sequence of the first layer 30 and the further opaque layer 60 is reversed. The two opaque layers 40, 60 are applied with particular advantage in the register to each other and show on the one hand in supervision of the top 24 and bottom 26 each have their own motif and complement each other on the other hand in review complementary to an overall motif. The opaque layers are in particular, as in Fig. 6 (f) shown, non-overlapping, but applied shock to impact.

The further embodiment of Fig. 6 (g) is a modification of the design of the Fig. 6 (e) , wherein again the sequence of the first layer 30 and the further opaque layer 60 is reversed. Again, the two opaque layers 40, 60 are applied particularly in the register, particularly preferably shock to impact and show both on supervision of the top 24 and bottom 26 each have their own motif and complement each other on the other hand in review complementary to an overall motif. The complementary opaque layers 40, 60 of the embodiments of FIGS. 6 (f) and 6 (g) For example, a super-size press, such as KBA NotaSys or Komori, can be applied to the opposite sides of the substrate 20.

It is understood that the window area 22 in the FIGS. 2 to 6 only shown schematically. If the window region 22 is formed in practice, for example, by an opening 14 which is closed only on the upper side 24 of the substrate 20 with a film element 16, then the in Fig. 2 shown second layer 40 partially on the underside 26 of the substrate 20 and in the window area on the underside of the film member 16 before, such as in below Fig. 7 illustrated.

Fig. 7 shows intermediate steps of a preferred manufacturing method for a security document according to the invention. Initially, a paper substrate 12 is provided, which is provided with a through opening 14. The through opening 14 can be produced, for example, after papermaking by punching or papermaking already in papermaking. The opening 14 is then closed by a still unprinted film element 16 on the top of the paper substrate, as in Fig. 7 (a) shown. The film element 16 may be a patch that covers substantially only the opening 14 or may also represent an endless belt.

Subsequently, the first, translucent layer 30 with the optically variable interference layer pigments is printed on the upper side of the film element 16 in the screen printing method, as in FIG Fig. 7 (b) shown. If the screen printing ink contains magnetic interference layer pigments, these are aligned at or immediately after the application of the first layer 30 to provide a desired three-dimensional structure, such as the beam 32 described above.

Finally, the second, opaque layer 40 is printed on the underside of the paper substrate in offset printing, as in Fig. 7 (c) shown, wherein the second layer 40 is printed in a portion 70 outside the opening 14 on the lower surface of the paper substrate 12 and in a portion 72 within the opening 14 on the lower surface of the film member 16.

LIST OF REFERENCE NUMBERS

10

bill

12

paper substrate

14

through opening

16

transparent foil strip

18

Through area

20

substratum

22

transparent window area

24

top

26

bottom

30

first shift

32

bar

34

recess

40

second layer

42

recess

44

Letter

46

small star, blue part

48

Rest of the flag

50

dark area

60

another opaque, optically non-variable layer

62

additional translucent, optically variable effect layer

70, 72

subregions

Claims (17)

1. A security document (10), such as a banknote, identity card and the like, having a substrate (20) having a see-through window (22), with a first layer (30) and a second layer (40) being stacked in the region of the see-through window,

   - the first layer constituting a translucent, optically variable effect layer that at least partially covers the see-through window,

   - the second layer constituting an opaque, optically non-variable layer that is at least partially arranged in the see-through window and whose sub-region arranged in the see-through window is developed in the shape of a motif,

   - when viewed from the side of the first layer, a first piece of top-view information being perceptible in the form of the optically variable appearance of the first layer, when looked through, a piece of see-through information being perceptible that is at least codetermined by the sub-region of the second layer that lies in the see-through window and is developed in the shape of a motif, and when viewed from the side of the second layer, a second piece of top-view information being perceptible that is given by a combination of the optically non-variable second layer and the portion of the optically variable first layer that is visible in the see-through window, characterized in that

   - the second layer displays a fixed color impression in at least a sub-region and, with said sub-region, is coordinated with the optically variable first layer in such a way that the first layer and the sub-region of the second layer at least partially display substantially the same hue at a predetermined viewing angle.
2. The security document according to claim 1, characterized in that the first layer completely covers the see-through window.
3. The security document according to claim 1, characterized in that the first layer in the see-through window comprises a gap, especially in the form of a motif, such that the piece of see-through information that is perceptible when looked through is also codetermined by the especially motif-shaped gap in the first layer.
4. The security document according to at least one of claims 1 to 3, characterized in that the first layer includes optically variable interference layer pigments, preferably interference layer pigments having an at least five-layer structure having a first absorber layer, a first dielectric layer, a reflector layer, a second dielectric layer and a second absorber layer.
5. The security document according to claim 4, characterized in that the optically variable interference layer pigments are magnetic and preferably comprise an at least seven-layer structure having a first absorber layer, a first dielectric layer, a first magnet layer, a reflector layer, a second magnet layer, a second dielectric layer and a second absorber layer.
6. The security document according to at least one of claims 1 to 5, characterized in that the second layer lies completely inside the area covered by the first layer.
7. The security document according to at least one of claims 1 to 6, characterized in that the second layer lies completely inside the see-through window.
8. The security document according to at least one of claims 1 to 7, characterized in that the first layer lies partially inside and partially outside the see-through window.
9. The security document according to at least one of claims 1 to 8, characterized in that the first layer is furnished with a laser marking that is perceptible as an optically non-variable and non-colored marking against the background of the optically variable effect layer only when viewed from the side of the first layer.
10. The security document according to at least one of claims 1 to 9, characterized in that the substrate outside of the see-through window is opaque.
11. The security document according to at least one of claims 1 to 10, characterized in that the see-through window is formed by a through opening in the substrate that is closed with a transparent foil element.
12. The security document according to at least one of claims 1 to 10, characterized in that the see-through window is formed by a transparent sub-region of an otherwise opaque substrate.
13. The security document according to at least one of claims 1 to 12, characterized in that the first and second layer are present on opposite sides of the substrate.
14. A method for manufacturing a security document according to one of claims 1 to 13, in which

    - a substrate having a see-through window is provided and is furnished in the region of the see-through window with two stacked layers, in that

    - as a first layer, a translucent, optically variable effect layer is applied that at least partially covers the see-through window,

    - as a second layer, an opaque, optically non-variable layer is applied that is arranged at least partially in the see-through window and whose sub-region arranged in the see-through window is developed to be motif-shaped,

    - the second layer displaying a fixed color impression in at least a sub-region and, with said sub-region, is coordinated with the optically variable first layer in such a way that the first layer and the sub-region of the second layer at least partially display substantially the same hue at a predetermined viewing angle.
15. The method according to claim 14, characterized in that the first layer is applied in a screen printing, intaglio printing or flexographic printing process, or by means of sputtering or a vacuum evaporation process.
16. The method according to claim 14 or 15, characterized in that the first layer includes magnetically alignable pigments, and said pigments are magnetically aligned in the form of a desired pattern upon or shortly after the application of the first layer.
17. The method according to at least one of claims 14 to 16, characterized in that the first layer is impinged on with laser radiation to produce a non-optically variable and non-colored laser marking in the first layer.

Images