EP3565722B1 - Value document - Google Patents

Description

The invention relates to a document of value, comprising a document of value substrate having a perforation area with a front side and a rear side, the front side of the document of value substrate being provided with a film security element at least in the area of the perforation of the document of value substrate; the value-document substrate perforation area can be seen when viewing the back of the value-document substrate in incident light and is formed in the form of a first motif consisting of a first partial area and a second partial area; the foil security element has a transparent area, which is formed in the first partial area of the value document substrate perforation area, and has a non-transparent area, which is arranged overlapping the second partial area of the value document substrate perforation area; the transparent area of the film security element formed in the first partial area of the value-document substrate perforation area can be seen in incident light in the form of a second motif when the front side of the value-document substrate is viewed; the non-transparent area of the film security element arranged to overlap the second partial area of the value-document substrate perforation area can be seen when viewing the front side of the value-document substrate in incident light in the form of a third motif, which develops an optically variable effect when the value document is tilted and is based on a reflective embossed structure .

A value document according to the invention can be, for example, banknotes or identification documents, but also stocks, certificates, stamps, checks, tickets, tickets, airline tickets, ID cards, visa stickers or the like, as well as labels, seals, packaging or other elements. In the following, the simplified designation "document of value" therefore always includes documents of the type mentioned. The term document of value also includes security paper for the production of banknotes.

For security purposes, documents of value are generally equipped with security elements which allow the authenticity of the document of value to be checked and which at the same time serve as protection against unauthorized reproduction of the document of value. Foil security elements, for example, come into consideration as security elements, which have a foil substrate or plastic substrate and are applied to the value document substrate by means of an adhesive layer.

In order to increase protection against forgery, it is known to combine such film security elements with continuous openings or perforation areas in the documents of value.

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

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

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

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

the WO 2014/108329 A1 describes a method for producing an endless paper web for the production of security and valuable documents. The paper web is first provided with a continuous opening. A film with security features to be applied to the paper web is then applied in register.

the WO 2016/091381 A1 describes a bank note with a transparent window area which is provided with a security element. The security element includes a carrier and one on the carrier arranged layer structure, comprising a reflective layer, which is arranged on the carrier by means of an embossed lacquer layer with an embossed relief structure, a colored thin-layer element and a transparent adhesive layer, the reflective layer being obtainable by printing and based on platelet-shaped metal pigments which are constituted in such a way that they are three-dimensional Align along the relief structure of the embossing lacquer layer. According to a preferred variant, the embossing lacquer layer with an embossed relief structure is provided with the reflection layer in a first partial area and with the colored thin-film element in a second partial area, with the two partial areas each forming a pattern, character or a code and in particular being arranged at least partially in register with one another .

the WO 2011/082761 A1 describes a thin-film element with a multi-layer structure for security papers, documents of value and the like, which appears gold-colored when viewed in reflected light and which has at least two semi-transparent mirror layers and at least one dielectric spacer layer arranged between the at least two mirror layers, so that when measuring the transmission of unpolarized light in the blue Wavelength range from 420 to 490 nm shows a resonance with a full width at half maximum of 70 to 150 nm. Furthermore, a data carrier, for example a bank note, is described therein with such a thin-film element, in which the thin-film element is arranged in or above a transparent window area or a continuous opening of the data carrier.

The invention is based on the object of providing a document of value with a document of value substrate having a perforation area, the document of value with regard to the verifiability is improved with regard to its authenticity and with regard to the protection against unauthorized reproduction of the document of value.

This object is achieved by the one defined in claim 1

Feature combination solved. Developments are the subject of the dependent claims.

Detailed Description of the Invention

In terms of this invention, observation in incident light is illumination of the document of value from one side and observation of the document of value from the same side. Observation in reflected light is therefore present, for example, when the front side of the document of value is illuminated and also viewed.

In terms of this invention, viewing in transmitted light is illuminating a value document from one side and viewing the value document from another side, in particular the opposite side. An observation in transmitted light is therefore present, for example, when the back of the document of value is illuminated and the front of the document of value is viewed. The light thus shines through the document of value.

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

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

The value document substrate is in particular a paper substrate or a paper-like substrate.

According to the invention, provision is made for the perforation area of the value-document substrate to be formed by means of a recess which breaks through the value-document substrate and which forms a perforation-area motif. It is preferred that the break-through recess forming the break-through area motif is produced in the value-document substrate by the action of laser radiation on the value-document substrate, in particular by means of laser cutting. Laser cutting can be used to create smooth edges. In addition, very filigree breakdown area motifs can be created using laser radiation. The break-through area motif can furthermore be formed by a plurality of cut-outs breaking through the value-document substrate, which together produce a motif.

According to the WO 95/10420 A1 It is known that a document of value substrate is provided with a window-like opening which is then closed with an at least partially transparent covering film, wherein the covering film can be provided with additional security features, for example diffraction structures, particularly in the region of the window-like opening. In contrast, the der is based The idea on which the present invention is based is based on the finding that by means of the perforation area and a foil security element covering the perforation area, which has a transparent area and a non-transparent area that develops an optically variable effect and is based on a reflective embossed structure, when changing between a front-side and a rear view of the document of value, surprising, superordinate motifs can be generated. The value document substrate perforation area forms a first motif having a transparent window area and a metallization, which can be seen when viewing the value document in reflected light from the back, but cannot be guessed by the viewer when viewing the value document from the front in reflected light. When viewing the document of value from the front in reflected light, the viewer sees a second motif in the form of the transparent window area and a third motif adjoining it in the form of a reflective embossed structure that develops an optically variable effect. The first motif, which can be recognized by the viewer when changing from the front view to the rear view of the value document in incident light, is surprising for the viewer because it is a superordinate motif made up of two components, the first component being the second motif, which can also be recognized when viewed from the front incident light is in the form of the transparent window area and the second component is a part or a section of the non-transparent area of the film security element covering the perforation area that is recognizable when viewed from the front with incident light and develops an optically variable effect and is based on a reflective embossed structure.

The embossed structure that can be used according to the invention is embossed in particular in an embossing varnish. In the context of the present application, the expression “optically variable effect” includes not only holograms but also hologram-like diffraction structures, ie, for example, structures that do not produce a defined image but instead create a blurred, colored impression. Diffraction patterns, structures with a color shift effect, kinoforms, structures with a microlens effect, structures with isotropic or anisotropic scattering effects or with other interference effects, sub-wavelength structures, moth-eye structures, microlens structures and microstructures for moiré magnifiers or modulo mappers are also subsumed under the term "optically variable effect". , micromirror structures and microprismatic structures.

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

wobei sich die Farbe des mehrschichtigen Aufbaus mit der Änderung des Betrachtungswinkels ändert.Preferred reflective embossed structures contain, for example, an interference-capable, multi-layer structure

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

the color of the multi-layer structure changes with the change in viewing angle.

It is possible to create a first appearance of the multilayer structure capable of interference that is recognizable when viewing the front side in incident light and a second appearance of the multilayer structure capable of interference that is recognizable when viewing the front side in transmitted light, e.g. by gaps in the reflective layer and/or the semi-transparent layer. Such a film security element with different reflected light / transmitted light appearance is from WO 2009/149831 A2 known. For example, the semi-transparent layer can have a large number of gaps arranged in a grid-like manner, which in their entirety result in a character, an image or a pattern. The pattern created in this way is visible in reflected light and disappears in transmitted light. Alternatively and/or additionally, a different reflected light/transmitted light appearance of the multilayer structure can be achieved by combining the structure with a relief structure, in particular a diffractive relief structure, a microoptical relief structure or a sublambda structure.

• die beiden semitransparenten Spiegelschichten werden bevorzugt von Al oder Ag gewählt; die dielektrische Schicht ist insbesondere eine SiO_2-Schicht;
• im Falle, dass jede der beiden semitransparenten Spiegelschichten auf Al beruht, liegt die jeweilige bevorzugte Schichtdicke in einem Bereich von 5 nm bis 20 nm, insbesondere bevorzugt in einem Bereich von 10 nm bis 14 nm; die dielektrische SiO_2-Schicht hat vorzugsweise eine Schichtdicke in einem Bereich von 50 nm bis 450 nm, weiter bevorzugt in einem Bereich von 80 nm bis 260 nm, wobei die Bereiche von 80nm bis 100nm und von 220nm bis 240nm speziell für die Bereitstellung eines Gold/Blau-Farbwechsels besonders bevorzugt werden;
• im Falle, dass jede der beiden semitransparenten Spiegelschichten auf Ag beruht, liegt die jeweilige bevorzugte Schichtdicke in einem Bereich von 15 nm bis 25 nm; die dielektrische SiO_2-Schicht hat vorzugsweise eine Schichtdicke in einem Bereich von 50 nm bis 450 nm, weiter bevorzugt in einem Bereich von 80 nm bis 260 nm, wobei die Bereiche von 80nm bis 100nm und von 220nm bis 240nm speziell für die Bereitstellung eines Gold/Blau-Farbwechsels besonders bevorzugt werden.

Other preferred reflective embossed structures contain, for example, a multilayer structure with two semitransparent layers and a dielectric layer arranged between the two semitransparent layers, the multilayer structure having different shades of color when viewed in incident light on the one hand and when viewed in transmitted light on the other hand, in particular when viewed in Incident light appears gold-colored and shows a blue tint when viewed in transmitted light. The two different hues are, in particular, complementary colors. Such a multi-layer structure is based in particular on two semi-transparent mirror layers and a dielectric layer arranged between the two semi-transparent mirror layers. Such a multilayer structure, which appears gold when viewed in reflected light and shows a blue hue when viewed in transmitted light, is, for example, from WO 2011/082761 A1 known. As a semi-transparent mirror layer is particularly suitable a metal from the group consisting of Al, Ag, Ni, Cr, Cu, Au and an alloy of one or several of the above elements is selected, with Al or Ag being preferred as the semi-transparent mirror layer and Al being particularly preferred. Suitable multilayer structures with two semi-transparent mirror layers and a dielectric layer arranged between the two semi-transparent mirror layers preferably have the following physical properties:

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

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

The multi-layered layer structures mentioned not only enable the production of a semi-transparent functional layer, which appears gold-colored when viewed in reflected light and shows a blue hue when viewed in transmitted light, but depending on the choice of layer thickness, in particular the dielectric layer, further color changes can be generated, e.g

• magenta in reflected light, blue-green in transmitted light;
• turquoise in incident light, orange-yellow in transmitted light;
• reflected light gold, transmitted light blue-violet;
• reflected light silver, transmitted light violet.

Other preferred reflective embossed structures include, for example, a liquid crystal layer that exhibits a different color when viewed in reflected light than when viewed in transmitted light. Alternatively and/or additionally, a different incident light/transmitted light appearance can be brought about by combining the liquid crystal layer with a relief structure, in particular a diffractive relief structure, a micro-optical relief structure or a sublambda structure.

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

The relief structure forming a diffractive structure is in particular a hologram structure. The dimensions of the structural elements of the diffractive structure are preferably in the order of Light wavelength, more preferably in a range that is greater than 100 nm and less than 1 μm, with a range greater than 300 nm and less than 1 μm being particularly preferred.

The relief structure forming a micromirror arrangement is also referred to herein as a micro-optical relief structure. The production of a micro-optical relief structure is known in the prior art (see, for example, WO 2014/060089 A2 ). The dimensions of the structural elements of the micromirror arrangement are preferably in a range that is greater than 1 μm and less than 40 μm, with a range greater than 1 μm and less than 30 μm being particularly preferred. The dimensions of the structural elements of the micromirror arrangement have, for example, a height of up to 15 μm and a lateral extent of up to 30 μm. In this case, both the height and the lateral extent of the structural elements of the micromirror arrangement are preferably greater than 1 μm.

Other preferred micro-optical relief structures are, for example, from WO 2007/079857 A1 known. Here, the reflective microstructure has the form of a mosaic made up of a large number of reflective mosaic elements, which are characterized by the parameters of size, outline shape, relief shape, reflectivity and spatial orientation and which form a predetermined motif by different groups of mosaic elements with different characteristic parameters incident light in reflect different areas of space, and in which the mosaic elements have a lateral dimension below the resolution limit of the eye.

Further exemplary embodiments and advantages of the invention are explained below with reference to the diagrammatically greatly simplified figures, in the depiction of which a true-to-scale and proportionate reproduction was dispensed with in order to increase clarity.

Figur 1

ein erfindungsgemäßes Wertdokument gemäß einem ersten Ausführungsbeispiel;

Figur 2a

die Vorderseite des Papiersubstrats des Wertdokuments gemäß dem ersten Ausführungsbeispiel;

Figur 2b

die Rückseite des Papiersubstrats des Wertdokuments gemäß dem ersten Ausführungsbeispiel;

Figur 3

das Erscheinungsbild der Vorderseite des Foliensicherheitselements vor dem Aufbringen auf das Papiersubstrat;

Figur 4

das Erscheinungsbild der Vorderseite des Wertdokuments im Auflicht im Bereich des auf die Vorderseite des Papiersubstrats aufgebrachten Foliensicherheitselements;

Figur 5

das Erscheinungsbild der Rückseite des Wertdokuments im Auflicht im Foliensicherheitselement-Bereich, d.h. das Erscheinungsbild des Wertdokuments auf der dem Foliensicherheitselement abgewandten Seite im Auflicht;

Figur 6

das Erscheinungsbild der Vorderseite des Wertdokuments im Durchlicht im Bereich des auf die Vorderseite des Papiersubstrats aufgebrachten Foliensicherheitselements;

Figuren 7 bis 15

ein Beispiel für die Herstellung eines Foliensicherheitselements; und

Figuren 16 bis 22

ein weiteres Beispiel für die Herstellung eines Foliensicherheitselements.

Show it:

figure 1

an inventive value document according to a first embodiment;

Figure 2a

the front side of the paper substrate of the value document according to the first embodiment;

Figure 2b

the back of the paper substrate of the value document according to the first embodiment;

figure 3

the appearance of the front of the film security element prior to application to the paper substrate;

figure 4

the appearance of the front of the document of value in incident light in the area of the film security element applied to the front of the paper substrate;

figure 5

the appearance of the back of the document of value in reflected light in the area of the film security element, ie the appearance of the document of value on the side facing away from the film security element in reflected light;

figure 6

the appearance of the front of the document of value in transmitted light in the area of the film security element applied to the front of the paper substrate;

Figures 7 to 15

an example of the production of a film security element; and

Figures 16 to 22

another example for the production of a foil security element.

First embodiment

the figure 1 shows the front of a document of value 1 according to the invention, in the present case a bank note, according to a first exemplary embodiment. The bank note 1 is based on a paper substrate 2 which is provided with a strip-shaped foil security element 3 on its front side. In the present example, the foil security element 3 has a width of 1.4 cm and a length of 7.5 cm.

the Figure 2a shows the front side of the paper substrate 2 of the document of value 1 according to the invention in the state before the foil security element 3 was glued onto the paper. In the paper area, in which the foil security element 3 is to be glued later, the paper substrate 2 has two perforation areas 4 and 5 produced by laser cutting, of which the perforation area 4 is in the shape of a fish and the perforation area 5 is in the shape of a star. The creation of a perforated area in a paper substrate by means of Exposure to laser radiation (particularly by laser cutting) is, for example, in the WO 2010/072329 A1 and in the WO 2011/154112 A1 described.

the Figure 2b 1 shows the back of the paper substrate 2 with the perforation areas 4 and 5 produced by means of laser cutting (in the state before the foil security element 3 was glued onto the front of the paper substrate 2).

the figure 3 shows the appearance of the front of the foil security element 3 before it is applied to the front of the in FIG Figure 2a Paper substrate 2 shown, which has the perforation areas 4 and 5 (the imaginary dashed line AA' is used for the later description of the production method for the film security element 3 in FIGS Figures 7-15 or 16-22 relevant). The film security element 3 is in the form of a security strip and is based on a transparent plastic substrate (eg polyethylene terephthalate). The back of the plastic substrate has an adhesive layer with which the foil security element 3 can be glued to a paper substrate. The front side of the plastic substrate has a UV lacquer which has a diffractive relief structure in areas 6 and 8 and a micro-optical relief structure in area 7 . The diffractive relief structures 6 and 8 formed in the UV lacquer are provided with a reflective metallization, namely an Al layer, and each form a metallic-silver, optically variable hologram motif. The micro-optical relief structure 7 formed in the UV lacquer is provided with a semi-transparent multi-layer structure with two semi-transparent layers (one Al layer each) and a dielectric layer (an SiO ₂ layer) arranged between the two semi-transparent layers, the multi-layer Structure when viewed in the Incident light on the one hand and when viewed in transmitted light on the other hand has different color tones. In the example, the multilayer Al/SiO _2/ Al structure appears gold when viewed in reflected light and bluish when viewed in transmitted light. Such a multi-layer structure is, for example, from WO 2011/082761 A1 known. The area 7 appears to the viewer when viewed in incident light in the form of a metallic-gold-colored, optically variable microstructure motif. Such optically variable microstructures are, for example, from the WO 2007/079851 A1 known.

The film security element 3 is additionally printed with black printing ink in the form of three tiny rings 9 on its front side in the middle area on the left.

The areas 6, 7, 8 and 9 of the film security element 3 are non-transparent. Outside of the areas 6, 7, 8 and 9, the film security element 3 is transparent.

That in the figure 3 Foil security element 3 shown is now by means of the arranged on the back of the foil security element plastic substrate adhesive layer on the front of the in the Figure 2a The paper substrate 2 shown, which has the perforation areas 4 and 5, is glued so that the perforation area 5 of the paper substrate 2 is completely covered by the non-transparent area 8 of the film security element 3, and the perforation area 4 of the paper substrate 2 is only partially covered by the non-transparent areas 7 and 9 of the film security element 3 is covered.

the figure 4 shows the appearance of the front of the value document 1 in incident light in the area of the film security element 3 applied to the front of the paper substrate 2.

The semicircular-oval area 10 forms a transparent window within the value document 1 through which the viewer can see through the value document. The viewer also sees the metallic-silver, optically variable hologram motifs 6 and 8 and the metallic-gold-colored, optically variable microstructure motif 7 in the form of a shell. In the lower, left area of the shell 7, the viewer perceives the transparent window 10 together with the small black rings 9 in the shape of the head of a fish, which keeps its body hidden behind the shell 7 and generates air bubbles 9.

The reference number 11 designates the opaque white area of the paper substrate 2 .

the figure 5 shows the appearance of the back of the document of value 1 in reflected light (in the area of the film security element 3 applied to the front of the paper substrate 2).

The reference number 12 designates the opaque white area of the paper substrate 2 . In area 13, the viewer sees a metallic-silver, optically variable hologram motif in the shape of a star. In the area 14 the viewer sees a metallic-gold-colored, optically variable microstructure motif, pictorially in the shape of the body of a fish. The semicircular-oval area 15 forms a transparent window within the document of value 1, through which the viewer can see through the document of value can see through. The viewer visually perceives the transparent window 15 in the shape of the head of a fish, the torso of the fish being formed by the metallic-gold-colored, optically variable microstructure 14 .

• der im Papier erzeugte Durchbrechungsbereich 4 in der Gestalt eines Fisches als ein erstes Motiv, mit einem ersten Teilbereich (Kopf) und einem zweiten Teilbereich (Rumpf);
• der erste Teilbereich (Kopf) des ersten Motivs (Fisch) ist infolge der Transparenz im Bereich des den ersten Teilbereich abdeckenden Foliensicherheitselements 3 transparent;
• der zweite Teilbereich (Rumpf) des ersten Motivs (Fisch) ist infolge des nicht-transparenten, metallisch-goldfarbigen Bereichs 7 des den zweiten Teilbereich abdeckenden Foliensicherheitselements 3 metallischgoldfarben;
• folglich nimmt der Betrachter beim Wechsel der Betrachtung des Wertdokuments 1 im Auflicht von der Vorderseite (Figur 4) hin zur Rückseite (Figur 5) das "erste Motiv" in Form eines Fisches (Bezugsnummern 14,15 in der Figur 5) als ein übergeordnetes Motiv wahr; die untergeordneten Motive sind einerseits das in vorderseitiger Draufsicht erkennbare transparente Fenster in der Form eines Fischkopfes (Bezugsnummer 10 in der Figur 4) als das "zweite Motiv", sowie die in vorderseitiger Draufsicht erkennbare metallisch-goldfarbige Mikrostruktur (Bezugsnummer 7 in der Figur 4) in der Form einer Muschel als das "dritte Motiv".

The provided with the foil security element 3 front of the document of value 1, whose appearance in reflected light in the figure 4 is shown, and the back of the value document 1, whose appearance in reflected light in the figure 5 shown, each have motifs that together form a surprising, overarching motif:

• the perforated area 4 created in the paper in the shape of a fish as a first motif, with a first partial area (head) and a second partial area (trunk);
• the first partial area (head) of the first motif (fish) is transparent due to the transparency in the area of the film security element 3 covering the first partial area;
• the second partial area (trunk) of the first motif (fish) is metallic gold-colored as a result of the non-transparent, metallic gold-colored area 7 of the film security element 3 covering the second partial area;
• Consequently, when changing the viewing of the document of value 1 in incident light, the viewer takes from the front ( figure 4 ) to the back ( figure 5 ) the "first motif" in the form of a fish (reference numbers 14,15 in the figure 5 ) true as a higher motive; the subordinate motifs are, on the one hand, the transparent window in the form of a fish head (reference number 10 in the figure 4 ) as the "second motif", as well as the metallic gold-colored one recognizable in the front plan view Microstructure (reference number 7 in the figure 4 ) in the shape of a shell as the "third motif".

the figure 6 shows the appearance of the front side of the document of value 1 in transmitted light in the area of the film security element 3 applied to the front side of the paper substrate 2. Compared with the incident light observation (see figure 4 ) the viewer now also perceives the area 16 in the shape of the body of a bluish fish. Together with the transparent window 10 in the shape of a fish head, the bluish, semi-transparent fish body 16 forms a fish as the overriding motif, which surprisingly becomes recognizable when viewing the front side of the document of value 1 in transmitted light.

That in the Figures 1 to 6 The exemplary embodiment shown is therefore surprising for the viewer in two respects, because on the one hand a surprising, superordinate motif in the shape of a fish can be seen when changing from the front plan view to the rear plan view of the value document, and on the other hand when changing from the front plan view to the front transmitted light Considering the document of value, a surprising, overriding motif in the shape of a fish becomes apparent.

the Figures 7 to 15 illustrate a first example of the manufacture of a in the figure 3 Foil security element 3 shown, which is suitable for sticking onto a document of value paper substrate. In the Figures 7 to 15 is a cross-sectional view of the layer structure in the course of the formation of the in the figure 3 shown film security element 3 along the dashed line AA 'shown. Such a manufacturing process is from WO 2016/091381 A1 known.

According to the figure 7 a carrier 17 in the form of a (eg transparent) plastic film, eg a PET film, is provided with an embossing varnish 18 . The relief structure (ie the surface) of the embossing varnish 18 has a microstructure in the partial area 18a and a nanostructure in the partial area 18b.

According to the figure 8 a soluble wash ink 19 is printed in such a way that the area of the relief structure 18b forming a diffractive structure forms a recess in the wash ink 19 applied.

According to the figure 9 the layer structure provided with the wash color 19 is coated over the entire surface by means of vapor deposition with a metallization 20, in the present case aluminum. The metallization 20 adapts to the diffractive relief of the embossing lacquer layer 18 in the partial area 18b.

According to the figure 10 a demetallization step is carried out in which the printed washing ink area 19 is washed off together with the overlying areas of the metallization 20. The reflection layer 20 remains in the area of the relief structure 18b of the embossing lacquer 18, which forms a diffractive structure.

According to the figure 11 a soluble wash ink 21 is printed in such a way that the area of the relief structure 18a forming a micromirror arrangement forms a recess in the wash ink 21 applied.

According to the figure 12 the layer structure provided with the wash color 21 is covered over the entire surface with a semi-transparent multi-layer structure 22, which appears gold-colored when viewed in incident light and shows a blue tint when viewed in transmitted light. Such a multilayer structure 22 has a semitransparent Al layer 23 with a layer thickness of 14 nm, for example, a dielectric spacer layer 24 (SiO ₂ with a layer thickness of 230 nm, for example) and a semitransparent Al layer 25 with a layer thickness of 14 nm, for example, and can be produced by vapor deposition. Such a multilayer structure, which appears gold when viewed in reflected light and shows a blue hue when viewed in transmitted light, is, for example, from WO 2011/082761 A1 known.

According to the figure 13 a demetallization step is carried out, in which the printed washing ink area 21 is washed off together with the overlying areas of the multilayer structure 22.

According to the figure 14 the layer structure obtained is provided with a (eg transparent) intermediate layer or primer layer 26 (eg a UV varnish) and then according to the figure 15 provided with a heat-sealing lacquer 27 suitable for gluing the security element to a value-document substrate.

When the security element is viewed in reflected light from the side of the carrier 17, the resulting embossing varnish 18 has a metallic-gold-colored micromirror motif in the partial area 18a and a silver hologram motif in the partial area 18b.

the Figures 16 to 22 illustrate a second example of the manufacture of a in the figure 3 Foil security element 3 shown, which is suitable for sticking onto a document of value paper substrate. In the Figures 16 to 22 is a cross-sectional view of the layer structure in the course of the formation of the in the figure 3 shown film security element 3 along the dashed line AA 'shown.

According to the figure 16 a carrier 28 in the form of a transparent plastic film, eg a PET film, is provided with an embossing lacquer 29 . The relief structure (ie the surface) of the embossing lacquer 29 has a microstructure in the partial area 29a and a nanostructure in the partial area 29b.

According to the figure 17 a printing layer 30 is printed onto the embossing varnish 29 first with a washing ink (ie a printing ink which can be washed out or removed after it has been printed using a washing liquid). Wash colors are eg from the EP 1 972 462 A2 and the prior art cited therein at paragraphs [0004] to [0006].

According to the figure 18 the embossing varnish 29 printed with the washing ink 30 is provided with a multi-layer structure 31 over the entire surface, which appears gold-colored when viewed in reflected light and shows a blue hue when viewed in transmitted light. Such a multi-layer structure 31 has a semi-transparent Al layer with a layer thickness of 14 nm, for example, a dielectric spacer layer (SiO ₂ with a layer thickness of 230 nm, for example) and a semi-transparent Al layer with a layer thickness of 14 nm, for example, and can be produced by vapor deposition be generated.

According to the figure 19 a demetallization step is carried out, in which the printed washing ink area 30 is washed off together with the overlying layer area of the multi-layer structure 31. The embossing varnish 29 that is produced in this way has only one in the partial area 29a semi-transparent multi-layer structure, which appears gold-colored when viewed in reflected light and shows a blue hue when viewed in transmitted light.

According to the figure 20 is the embossing varnish 29 in the portion 29b with the from WO 2005/051675 A2 known ink printed. The printing ink is based on platelet-shaped metal pigments (in particular Al pigments) and leads to the production of a reflection layer 32, in the present case a "silver" mirror layer.

According to the figure 21 the layer structure obtained is provided with a transparent intermediate layer or primer layer 33 (for example a transparent UV lacquer).

According to the figure 22 Finally, the foil security element 3 is completed by applying a transparent adhesive layer 34 (for example a heat-seal adhesive) to the primer layer 33 .

Second embodiment

A document of value according to the invention according to a second exemplary embodiment is based on the preceding exemplary embodiment. The one with the reference number 7 in the figure 3 However, the area of the film security element 3 shown is designed in such a way that instead of a semi-transparent multi-layer structure, which appears gold-colored when viewed in reflected light and shows a blue hue when viewed in transmitted light, a multi-layer, opaque structure capable of interference is used, which has a reflecting layer, a semi-transparent one layer and a dielectric layer arranged between the reflective layer and the semi-transparent layer, so that the color of the multi-layer structure changes with the change in the viewing angle.

Since the foil security element 3 is opaque in the area 7, the observer would perceive the document of value 1 when viewing the front side in transmitted light in exactly the same way as when viewing the front side in incident light. In other words, that in the figure 6 The appearance of the document of value shown in the first exemplary embodiment when viewed through transmitted light from the front, in which a transparent region 16 becomes visible, is omitted. Instead, the appearance of the value document when viewed from the front through transmitted light is identical to the appearance of the value document when viewed from the front through incident light (see figure 4 ) identical.

• Variante 1:
  • In Anlehnung an die obige Beschreibung zu den Figuren 7 bis 15 wird in der Figur 12 der mit der Waschfarbe 21 versehene Schichtaufbau vollflächig mit einem mehrschichtigen Dünnschichtelement 22 mit Farbkippeffekt versehen.
  • Ein solches Dünnschichtelement 22 weist eine semitransparente Absorberschicht 23 (z.B. Cr), eine dielektrische Abstandsschicht 24 (z.B. SiO₂) und eine Reflexionsschicht 25 (z.B. Al) auf und kann mittels Aufdampfen erzeugt werden.
• Variante 2:
  • In Anlehnung an die obige Beschreibung zu den Figuren 16 bis 22 wird in der Figur 18 der mit der Waschfarbe 30 bedruckte Prägelack 29 vollflächig mit einem mehrschichtigen Dünnschichtelement 31 mit Farbkippeffekt versehen. Ein solches Dünnschichtelement 31 weist eine semitransparente Absorberschicht (z.B. Cr), eine dielektrische Abstandsschicht (z.B. SiO₂) und
  • eine Reflexionsschicht (z.B. Al) auf und kann mittels Aufdampfen erzeugt werden.

The one with the reference number 7 in the figure 3 shown area of the film security element 3, which is equipped with an interference-capable, multi-layer, opaque structure that has a reflective layer, a semi-transparent layer and a dielectric layer arranged between the reflective layer and the semi-transparent layer, so that the color of the multi-layer structure changes with the Changing the viewing angle can be provided as follows:

• Version 1:
  • Based on the above description of the Figures 7 to 15 will in the figure 12 the layer structure provided with the wash color 21 over the entire surface a multi-layer thin-layer element 22 provided with color-shift effect.
  • Such a thin-film element 22 has a semi-transparent absorber layer 23 (eg Cr), a dielectric spacer layer 24 (eg SiO ₂ ) and a reflection layer 25 (eg Al) and can be produced by vapor deposition.
• Variant 2:
  • Based on the above description of the Figures 16 to 22 will in the figure 18 the embossing varnish 29 printed with the wash color 30 is provided over the entire surface with a multi-layer thin-layer element 31 with a color shift effect. Such a thin-film element 31 has a semi-transparent absorber layer (eg Cr), a dielectric spacer layer (eg SiO ₂ ) and
  • a reflection layer (eg Al) and can be produced by vapor deposition.

Claims (13)

1. A value document (1), comprising a value document substrate (2) having a break-through area (4, 5) with a front side and a back side, wherein

   - the front side of the value document substrate (2) is furnished with a foil security element (3) at least in the value document substrate break-through area (4, 5);

   - the value document substrate break-through area (4, 5) is recognizable upon viewing the back side of the value document substrate (2) in incident light and is formed in the form of a first motif consisting of a first partial area and a second partial area;

   - the foil security element (3) has a transparent area which is formed at least in the first partial area of the value document substrate break-through area (4, 5) and has a non-transparent area which is arranged overlapping the second partial area of the value document substrate break-through area (4, 5);

   - the transparent area of the foil security element (3) formed in the first partial area of the value document substrate break-through area (4, 5) is recognizable upon viewing the front side of the value document substrate (2) in incident light in the form of a second motif;

   - the non-transparent area of the foil security element (3) arranged overlapping the second partial area of the value document substrate break-through area (4, 5) is recognizable upon viewing the front side of the value document substrate (2) in incident light in the form of a third motif which develops an optically variable effect upon tilting the value document (1) and is based on a reflective embossed structure, characterized in that

   - a part of the non-transparent area of the foil security element (3), which is arranged overlapping the second partial area of the value document substrate break-through area (4, 5), is recognizable upon viewing the back side of the value document substrate (2) in incident light within the value document substrate break-through area (4, 5).
2. The value document according to claim 1, wherein the non-transparent area of the foil security element arranged overlapping the second partial area of the value document substrate break-through area is opaque, so that the value document substrate break-through area formed in the form of the first motif is recognizable only upon viewing the back side of the value document substrate and is not recognizable upon viewing the front side of the value document substrate both in incident light and in transmitted light.
3. The value document according to claim 1, wherein the non-transparent area of the foil security element arranged overlapping the second partial area of the value document substrate break-through area is semitransparent, so that the value document substrate break-through area formed in the form of the first motif is not recognizable upon viewing the front side of the value document substrate in incident light and is recognizable upon viewing the front side of the value document substrate in transmitted light.
4. The value document according to any of claims 1 to 3, wherein the part of the non-transparent area of the foil security element recognizable upon viewing the back side of the value document substrate in incident light within the value document substrate break-through area, which is arranged overlapping the second partial area of the value document substrate break-through area, develops an optically variable effect upon tilting the value document and is based on a reflective emboss structure and preferably has a color which is different from the color perceptible upon viewing the front side of the value document substrate in incident light.
5. The value document according to any of claims 1 to 4, wherein - the value document substrate has, in addition to the one break-through area forming a first motif, a further break-through area forming a fourth motif;

   - the front side of the value document substrate is furnished with the foil security element at least in the break-through area forming the first motif and in the break-through area forming the fourth motif;

   - the foil security element has a further non-transparent area which is arranged overlapping the further value document substrate break-through area forming a fourth motif;

   - the further non-transparent area of the foil security element arranged overlapping the further value document substrate break-through area forming a fourth motif is recognizable upon viewing the front side of the value document substrate in incident light in the form of a fifth motif which develops an optically variable effect upon tilting the value document and is based on a reflective emboss structure.
6. The value document according to claim 5, wherein a part of the further non-transparent area of the foil security element arranged overlapping the further value document substrate break-through area is recognizable upon viewing the back side of the value document substrate in incident light within the further value document substrate break-through area.
7. The value document according to claim 6, wherein the part of the further non-transparent area of the foil security element recognizable upon viewing the back side of the value document substrate in incident light within the further value document substrate break-through area, which is arranged overlapping the further value document substrate break-through area, develops an optically variable effect upon tilting the value document and is based on a reflective emboss structure and preferably has a color which is different from the color perceptible upon viewing the front side of the value document substrate in incident light.
8. The value document according to any of claims 1 to 7, wherein the reflective emboss structure of the non-transparent area of the foil security element arranged overlapping the second partial area of the value document substrate break-through area and/or the reflective emboss structure of the further non-transparent area of the foil security element arranged overlapping the further value document substrate break-through area is constituted as follows: (a) a reflective diffractive structure or (b) a reflective microstructure in the form of a mosaic of a plurality of reflective mosaic elements which are characterized by the parameters size, outline form, relief form, reflectivity and spatial orientation and which form a predetermined motif by different groups of mosaic elements with different characteristic parameters reflecting incident light into different spatial areas, and in which the mosaic elements have a lateral dimension below the resolution limit of the eye.
9. The value document according to any of claims 1 to 8, wherein the reflective emboss structure of the non-transparent area of the foil security element arranged overlapping the second partial area of the value document substrate break-through area and/or the reflective emboss structure of the further non-transparent area of the foil security element arranged overlapping the further value document substrate break-through area (i) have, as reflection layers, opaque metal layers, or (ii) have, as reflection layers, transparent, high-refractive layers, or (iii) have, as reflection layers, thin-film elements having a color-shift effect, in particular with a reflective layer and a semi-transparent layer and a dielectric layer arranged between them, or (iv) have, as reflection layers, layers of liquid-crystalline material, in particular of cholesteric liquid-crystalline material, or (v) have, as reflection layers, printed layers based on effect pigment compositions having a viewing angle-dependent effect or having different colors upon incident-light viewing and transmitted-light viewing, or (vi) have, as reflection layers, the following multilayer structure: two semitransparent layers and a dielectric layer arranged between the two semitransparent layers, wherein the multilayer construction has different color tones upon viewing in incident light on the one hand and upon viewing in transmitted light on the other hand.
10. The value document according to any of claims 1 to 9, wherein the value document substrate is a paper substrate.
11. The value document according to any of claims 1 to 10, wherein the value document substrate break-through area forming the first motif and/or the value document substrate break-through area forming the fourth motif is obtainable by the action of laser radiation on the data carrier substrate, in particular by means of laser cutting.
12. The value document according to any of claims 1 to 11, wherein the foil security element is a security strip.
13. The value document according to any of claims 1 to 12, wherein the value document is a bank note.

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