• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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    • 专利摘要:
    security element, value document, manufacturing method for a security element, embossing tool and use of a security element. the present invention relates to a security element (1) for security paper, document of value or similar, having a vehicle (9) that has a reflected surface area (3) that is divided into a multiplicity of pixels reflected (5), so the area of each pixel (5) is smaller than the area of the reflective surface area (3) by at least one order of magnitude, so each pixel (5) has at least one reflective facet which is formed on a vehicle surface, so that at least one reflective facet reflects incident light along a predetermined direction over the surface area (3) directionally in a reflection direction predefined by the orientation of said facet, so the Facet orientations of different pixels (5) have a substantially random variation over the reflective surface area.
    公开号:BR112012013450B1
    申请号:R112012013450
    申请日:2010-12-03
    公开日:2019-12-17
    发明作者:Rauch Andreas；Fuhse Christian；Heim Manfred；Rahm Michael；Bichlmeier Stefan
    申请人:Giesecke & Devrient Gmbh；Giesecke Devrient Currency Tech Gmbh；
    IPC主号:
    专利说明:

    “SECURITY ELEMENT, VALUE DOCUMENT, MANUFACTURING METHOD FOR A SECURITY ELEMENT AND RELIEF RECORDING TOOL”.
    [0001] The present invention relates to a security element for a security role, document of value or the like, to a document of value having such a security element, and to a method for manufacturing such a security element.
    [0002] Objects to be protected are often equipped with a security element which allows verification of the object's authenticity and at the same time serves as protection against unauthorized reproduction.
    [0003] Objects to be protected are, for example, security papers, identity documents and documents of value (such as, for example, bank notes, chip cards, passports, identification cards, identity cards, shares, investment titles, deeds, coupons, checks, entrance tickets, credit cards, health cards, etc.) as well as product authentication elements, such as, for example, labels, stamps, packaging, etc.
    [0004] For such a security element, optically variable security paints are used as described, for example, in EP 0 227 423 A2. Such safety inks contain platelet-shaped pigments with a thin-film interference coating, such that for an observer the color of the individual pigments depends on the viewing angle. Safety inks with the described platelet-shaped pigments can be printed on a bank note such that the pigments are aligned approximately parallel to the bank note surface, and the printed area changes its color according to the thin film coating pigments by tilting the banknote.
    [0005] It is also possible to provide such pigments with an additional magnetic layer (US 4,838,648), such that the pigments can then be aligned
    Petition 870190106215, of 10/21/2019, p. 17/65
    2/37 by means of suitable and fixed magnets (US 7,517,578 B2). This makes it possible for the pigments to be aligned parallel to each other substantially more precisely, on the one hand, which leads to a substantially higher chroma (= brighter colors). On the other hand, it provides the possibility of orienting the pigments not only parallel to the surface of the substrate, but in principle in any direction. In particular, pigments from different regions of the security element can also be aligned in different directions. Depending on the magnet set used, relatively abrupt as well as smooth transitions between differently oriented regions can be achieved.
    [0006] From JP 2008-80609 A a method is also shown for the alignment of platelet-shaped pigments in which the safety paint with the pigments is thus applied to an embossed structure in which the pigments are aligned approximately parallel to the relief. By the appropriate design of the relief, regions with differently oriented pigments and consequently different colors can be created.
    [0007] The optically variable safety inks described are relatively expensive on the one hand. On the other hand, the alignment of pigments by means of magnets is, of course, limited, due to the magnetic fields necessary for the alignment not to be formed arbitrarily. Additionally, the security elements cannot be specifically solved in a fine way, which is due to the generally used screen printing processes, on the one hand, and the transitions of the necessary magnetic fields not to be arbitrarily accentuated, on the other hand.
    [0008] In addition to the color change, safety paints also often lead to a gloss effect similar to metallic varnishing in automobiles.
    [0009] Based on these premises, the invention is based on the objective of avoiding the disadvantages of the prior art and in particular to provide a security element with which at least one of the effects described
    Petition 870190106215, of 10/21/2019, p. 18/65
    3/37 (such as, for example, the gloss effect) of safety paints can be obtained without using safety paints.
    [0010] According to the invention, this objective is achieved by a security element for a security paper, document of value or similar, having a vehicle that has a reflective surface area that is divided into a multiplicity of reflective pixels, so the area of each pixel is smaller than the area of the reflective surface area by at least one order of magnitude, so each pixel has at least one reflective facet which is formed on a vehicle surface, so the fur at least one reflective facet reflects the incident light along a predetermined direction over the surface area in a directional way predefined by the orientation of said facet, so the facet orientations of the different pixels have a substantially random variation on the reflective surface area.
    [0011] Pixels are considered here as small partial regions of the reflective surface area, which can not only have an arbitrary contour shape, but in particular must also be arranged in a regular grid.
    [0012] The formulation chosen according to which the orientations of the facets of the different pixels have a substantially random variation over the reflective surface area takes into account the fact that a random variation can also be performed, for example, with the help computer-generated “random numbers” which, strictly speaking, are deterministic.
    [0013] The substantially random variation of the facet orientations is preferably carried out as there is, associated first with the pixels, for example, in a region-based manner, a certain preferential orientation, from which the facet orientation of the individual pixels is then varied, for example, on the basis of computer generated random numbers or pseudo-random numbers. It can be achieved,
    Petition 870190106215, of 10/21/2019, p. 19/65
    4/37 therefore in particular that the orientations of the facets of individual pixels fluctuate around an average orientation in a region-based manner. The random fluctuation of the orientation can, especially the implementation variants, be present only within predefined limits and / or according to a predefined distribution, for example, uniformly or non-uniformly distributed.
    [0014] With such a security element, it is possible to precisely adjust for each pixel the orientation and thus also the direction in which the incident light is reflected, so that a glow effect can be performed in a simple way. In the security element of the invention, the reflective area, which can be, for example, a flat or curved area, can thus still be perceived as a flat or curved area but at the same time shows the desired brightness effect.
    [0015] The substantially random variation of facet orientations on the reflective surface area means here in particular that the reflection directions are different for most pairs of pixels directly neighboring or also for all pairs of pixels directly neighboring. Preferably, the surface area is at the same time perceptible to an observer in its real spatial form.
    [0016] The security element of the invention may in particular have an optical appearance that practically matches that of the magnetically aligned pigments of optically variable security inks. For this purpose, a pixel size is chosen that corresponds approximately to the size of the pigments used in such paints, for example, 30 pm, and the average orientation of the facets of the different pixels is chosen analogously to the average orientation of the pigments. The gloss effect of such paints is based on the individual pigments not reflecting exactly in a predefined direction, but a certain random variation of the reflection directions being present. The orientations of the facets of different pixels in the
    Petition 870190106215, of 10/21/2019, p. 20/65
    5/37 security elements of the invention likewise have such variation, which results in a comparable brightness effect.
    [0017] The area of the surface area and the area of the pixels are considered in particular the respective area by projecting towards the normal macroscopic surface of the surface area in a plane. Preferably, the area of each pixel is smaller than the area of the reflected surface area by at least two orders of magnitude.
    [0018] In the security element of the invention, the facet orientations of different pixels advantageously have a substantially random variation around different predefined average orientations in a region-based manner.
    [0019] Several of the pixels have preferable and respectively several reflective facets of identical orientation, which form a periodic or aperiodic sawtooth railing. It is also possible that all pixels have respectively, preferably the same number, of reflective facets of identical orientation.
    [0020] The facets are preferably configured as elements of substantially flat area, which facilitates manufacturing. The formulation chosen according to which the facets are configured as elements of substantially flat area takes into account the fact that, for manufacturing reasons, elements of perfectly flat area can never be manufactured in practice. The facets can also alternatively be configured as curved area elements (for example, concave, convex or wavy). The curvature of the area elements is appropriately low here.
    [0021] Orientation is understood here as being in particular the inclination of the reflective facets and / or the azimuth angle of the reflective facets. The orientation of the facets can also certainly be determined by other parameters. In particular, the parameters in question are two
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    6/37 mutually orthogonal parameters, such as, for example, the two components of the normal vector of the respective facet.
    [0022] The random variation of orientations can be performed here in one or more dimensions or spatial directions. The security element of the invention can be configured in particular such that the facet orientations of the different pixels vary substantially randomly only in one of the parameters that determine the facet orientation. Thus, the random variation can in particular also refer only to the inclination or only the azimuth angle, or the variation of the facet orientations can be chosen such that a reflected reflected light beam in a corresponding partial region disperses around a direction predefined rotation.
    [0023] Preferably, the variation of the directions of reflection that is predefined by the variation of the facet orientations of different pixels matters at least about 1 °, preferably at least about 3 °, particularly and preferably at least about 10 °.
    [0024] In the security element of the invention, the reflective facets may have a reflection intensifying coating, in particular a reflective one. Reflection enhancing coatings for the purposes of the invention are also coatings that increase reflectance, for example, only by about 20% to about 50%, such as, for example, semitransparent layers, while reflective coatings involve very high reflectance. high. The reflection-enhancing coating may be a metallic coating, which is deposited with steam, for example. As a coating material, aluminum, gold, silver, copper, palladium, chromium, nickel and / or tungsten as well as alloys thereof can be used. Alternatively, the reflection intensifying coating may be formed by coating with a material with a high refractive index.
    [0025] In particular, a layer of color change can be formed on the facets at least in certain regions. This makes it possible to adjust the
    Petition 870190106215, of 10/21/2019, p. 22/65
    7/37 desired color change effect at pixel size and so in a highly resolved manner. According to an advantageous embodiment, the layers of color change that differ in certain regions can also be formed on the facets.
    [0026] The reflection intensifying coating, as well as the color changing layer may be present in the form of patterns, characters or encodings and / or have slits in the form of patterns, characters or encodings.
    [0027] The maximum extension of a pixel is preferably between 5 pm and 5 mm, preferably between 10 pm and 300 pm, particularly and preferably between 20 pm and 100 pm.
    [0028] The sawtooth width, in the case of periodic sawtooth railings, the pixel grating period is preferably between 1 pm and 300 pm, preferably between 3 pm and 100 pm, particularly and preferably between 5 pm and 30 pm. The width of the sawtooth or the grating period is chosen in particular so that at least two facets of identical orientation are contained per pixel and that the diffraction effects play practically no longer a role with regard to the incident light (for example, the band wavelength from 380 nm to 750 nm). Because none, or practically no relevant diffraction effect occurs, the facets can be called achromatic facets, or the pixels, achromatic pixels, which causes a directionally achromatic reflection. The security element thus has an achromatic reflectivity with respect to the railing structure present through the pixel facets, so with the increasing railing period, the security element shows an increasingly brighter appearance, that is, a brighter effect pronounced. A possibly still present visibility of a diffraction image that arises from the sawtooth grating can be minimized - should be desired - in particular by varying the grating period.
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    8/37 [0029] The color changing layer can be configured in particular as a thin film system or thin film interference coating. Here, for example, a sequence of metal layer layer - dielectric layer can be performed. - layer of metal or a sequence of layers of at least three dielectric layers, so that the refractive index of the middle layer is less than the refractive index of the other two layers. As a dielectric material, for example, ZnS, SiO2, TiO2 / MgF2 can be used.
    [0030] The color change layer can also be configured as an interference filter, thin semi-transparent metal layer with selective transmission through plasma, nanoparticle resonance effects, etc. The color-changing layer can also be realized in particular as a liquid crystal layer, diffractive embossed structure or railing of the wave sub-length. A thin film system constructed of a reflector, dielectric, absorber (formed on the facets in this order or, by viewing the security element through the vehicle, in reverse order) is also possible. If the safety element must be visible from both sides, the absorber / dielectric / reflector / dielectric / absorber layer sequence is appropriate.
    [0031] In the security element of the invention at least two facets can preferably be provided per pixel. They can also be three, four, five or more facets.
    [0032] The security element can be configured in particular such that the azimuth angles of the facets of the individual pixels are values randomly distributed between 0 ° and 360 ° (but each facet has the same azimuth angle per pixel). It is also possible that the slopes of the facets per pixel are randomly distributed according to a normal distribution (here, too, each facet has the same slope per pixel).
    Petition 870190106215, of 10/21/2019, p. 24/65
    9/37 [0033] The reflective surface area of the security element can be divided into at least two partial regions or portions in which the pixels have different mean orientations, or different mean reflection directions predefined by different mean orientations. Therefore, all facets can, for example, have the same azimuth angle. In the first of the two partial regions, the facet slopes are then chosen randomly, for example, between 10 ° and 20 °, while the facet slopes in the second partial region of the two partial regions are chosen between -20 ° and -10 ° . By tilting the security element, the first partial region below appears to be bright in one case and the second partial region in the other case depending on the lighting, that is, the representation moves sharply from a positive to a negative representation.
    [0034] Alternatively, it is also possible, for example, that the azimuth angles are evenly distributed over all possible angles, and the slopes are different in the two partial regions, but respectively fixed, for example, 10 ° in the first partial region and 30 ° in the second partial region. Such a representation has the special property that although it moves sharply from a positive to a negative representation by tilting the security element, such a flip effect is surprisingly absent by rotating the security element within its plane.
    [0035] When the facets have a color-changing layer, the colors of the different partial regions can be different, because the color-changing coating is viewed from different angles.
    [0036] According to a preferred modality, the two partial regions can also be distributed over different mutually interwoven partial areas. In this way, for example, a so-called tilt image can be produced.
    [0037] Additionally, with the security element of the invention, the impression can be produced that a noisy area is present
    Petition 870190106215, of 10/21/2019, p. 25/65
    10/37 (preferably in a reflective area). Additionally, the facets of the pixels can be oriented such that simultaneous bright illumination of many pixels occurs from certain viewing angles. For this purpose, the reflective surface area on the vehicle is divided into at least two partial regions, so that the pixels in the first partial region have a random orientation, while the pixels in the second or other partial regions have the same or at least always the same orientation respectively by partial region. The light from a light source is then scattered in all directions from many angles in the first partial region, while the light is reflected in a narrow angular band respectively in the additional partial regions. An observer next sees only a noisy representation with randomly lit pixels (glow effect) from many angles, while the other partial regions illuminate very brightly from certain angles.
    [0038] With the security element of the invention, the possibility of simulating practically all the optical effects achievable with magnetically oriented pigments is fundamentally provided. Accordingly, mention should be made in particular of the scroll bar or the double scroll bar with effects determined in US 7,517,578 B2. Appropriately, the orientation of the facets is chosen here such that the reflective surface area has a continuous course of the average reflection directions of the pixels. By a suitable combination of the security element of the invention with magnetic materials, for example, the incorporation of magnetic layers or the combination with magnetic inks, magnetic properties can also certainly be provided which can in particular be machine readable.
    [0039] Preferably, the achievable optical effects are periodically continuous on the security element. Thus, a multiplicity of such effects can be repeated periodically, for example, by a safety element configured as a
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    11/37 so that the corresponding effect can be perceived in multiple ways by arranging it in a window.
    [0040] The pixels preferably have a rectangular or square control shape. However, they can also have other special contour shapes which become visible under the microscope, for example. In particular, pixels can also have different outline shapes. Therefore, a portion of the pixels can, for example, have outlines in the form of a symbol or a number.
    [0041] Preferably, the pixels are arranged in a regular grid.
    [0042] At least a portion of the pixels can be additionally written a motif, for example, a microtext, a logo or an encoding. The motif can be written here either within the facets, or a small portion of the pixels may have no facet, but be filled with the motif, for example, a microtext.
    [0043] The security element of the invention can be combined with other known security features. For example, an interlaced combination with a hologram, in particular a true color hologram or a Cinegram, is possible.
    [0044] According to a preferred embodiment, the security element of the invention can be combined with an arrangement of the micro-optical representation within a total representation. For example, the security element of the invention can be combined with an array of micro-optical representation with microstructures as well as microforming image elements for enlarged image formation of microstructures, for example, concave or microlens microlenses or micro-mirror sets or images of concave micro-mirror.
    [0045] The pixel facets can be configured as a periodic or aperiodic sawtooth structure. In particular, it is possible for facets to be formed by embossing the surface.
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    12/37 [0046] The reflective surface area of the security element can be in particular the shape of a motif (for example, letter, number, symbol, etc.).
    [0047] The security element of the invention can also be equipped with one or more functional layers for use as a security element for security papers, valuable documents and the like, in particular with a heat seal finish, with layers protective, for example, a transparent protective lacquer, cover layers, adhesive layers or layers with visually or machine-detectable safety features.
    [0048] There is also provided a document of value having the security element of the invention, so the security element can be configured according to the developments of the invention.
    [0049] In addition to the simulation of the optical effects achievable with magnetically oriented pigments, such effects can also be combined with the security element of the invention in a targeted manner. Thus, according to an advantageous embodiment, the document of value may also have, in addition to the security element of the invention, a security feature that is based on magnetically aligned pigments, preferably in the form of a plate of optically variable security inks and which has an optical appearance substantially comparable to the appearance of the security element. Such safety features can be taken in particular from US 7,517,578 B2, whose description of the manufacture and properties of such safety features is incorporated in the present description. Magnetic pigments are usually present here in the form of a pattern that contains a region in which the magnetic pigments are aligned relative to the surface of the paint layer.
    [0050] Such substantially comparable optical appearance may in particular consist of being formed on the facets of the security element at least in certain regions of a color changing layer, and the effect of
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    13/37 color change of the color change layer being adjusted such that the color change effects of the safety element and the safety feature based on magnetically aligned pigments correspond to each other, that is, they have the same color depending on the tilt angle.
    [0051] Alternatively or additionally, the security element of the invention and the security feature based on magnetically aligned pigments can respectively have an additional optical effect, whereby the optical effects produced additionally correspond to each other.
    [0052] Preferably, the other optical effect is formed by a kinetic effect. In particular, the effects of “scroll bar or double scroll bar determined in US 7,517,578 B2 should be mentioned here. Appropriately, the kinetic effects of the security element and the security feature based on magnetically aligned pigments occur by tilting the value document in the parallel direction, in the opposite direction (180 °) or in the direction perpendicular to each other.
    [0053] Other kinetic effects by tilting the value document can also be performed, such as, for example, the so-called flip, operation or pumping effects. The movement is advantageously performed here in the same direction or in the opposite direction. If, by tilting the value document, the safety element of the invention and the safety feature based on magnetically aligned pigments show, for example, a pumping effect (concentric movement around a fixed point), both therefore show an extension or both show a contraction (movement in the same direction) or alternatively the safety element shows an extension effect while the safety feature based on magnetically aligned pigments contracts (movement in the opposite direction). Consequently, in the case of so-called flip effects, the security element and the pigment-based security feature
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    14/37 magnetically aligned move sharply from positive to negative representation by tilting (movement in the same direction), or only the safety element moves sharply in this way while the safety feature based on magnetically aligned pigments moves from one negative to positive representation (movement in the opposite direction).
    [0054] In addition to the kinetic effects, the security element of the invention and the security feature based on magnetically aligned pigments can also show a corresponding three-dimensional effect, as can be taken, for example, from US 7,517,578 B2.
    [0055] The security element of the invention and the security feature based on magnetically aligned pigments can be arranged either on the same side of the valuation document or on the opposite sides of the valuation document. An arrangement on opposite sides of the value document here has the advantage that minimal color deviations between the security element of the invention and the security feature based on the magnetically aligned pigments that may be present are not, or are hardly perceived.
    [0056] According to a development of the invention, the reflective surface area of the security element, as well as the security feature based on magnetically aligned pigments, can take the form of a compatible motif (for example letter, number, symbol, etc.). Preferably, the motifs are formed on the document of value in different sizes. For example, the dimensions of the motif of the safety feature based on the magnetically aligned pigments matter by about 15 mm and the dimensions of the motif of the security element of the invention configured, for example, as a safety thread matter by about 4 mm.
    [0057] The invention also comprises a method for the manufacture of a security element for security papers, documents of value or
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    15/37 similar, in which the surface of a vehicle is so modulated in height in a surface area that the surface area is divided into a multiplicity of pixels respectively having at least one facet, and the facets are provided with a coating of in order to form reflective facets which reflect the incident light along a predetermined direction over the surface area per pixel respectively in a directional way in a reflection direction predefined by its orientation, so the area of each pixel is chosen because it is smaller than the surface area area by at least an order of magnitude, and so the orientation of the facets of different pixels has a substantially random variation over the reflective surface area.
    [0058] The manufacturing method of the invention can be developed in particular such that the security element of the invention, as well as developments of the security element of the invention, can be manufactured.
    [0059] For the production of the height-modulated vehicle surface, known methods of microstructuring can be employed, such as, for example, embossing methods. Thus, for example, also using known semiconductor manufacturing methods (photolithography, electron beam lithography, laser beam lithography, etc.) suitable structures in resistance materials can be exposed, possibly refined, molded, and employed for manufacture of embossing tools. Known methods for embossing thermoplastic sheets or sheets coated with radiation curing lacquers can be used. The vehicle can have several layers that are applied successively and optionally structured, and / or it can be assembled with several parts.
    [0060] The safety element of the invention can be manufactured in particular such that an additional high relief safety feature is produced in the same work step. This can in particular be an optically variable security feature, such as, for example, a
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    16/37 hologram, a non-noisy sawtooth structure (tilt images, kinematic effects, 3D representations, etc.), concave microlenses or micro-mirror sets, or concave microlenses or micro-mirror images.
    [0061] Additionally, at least one additional safety feature according to the invention can be metallized or provided with a metallic coating in the same work step as the facets.
    [0062] The security element can be configured in particular as a security thread, wear thread, security strip, security strip, patch or as a label for application to security paper, document of value or similar. In particular, the security element can cover regions or transparent recesses.
    [0063] The term security paper is considered here as being in particular the not yet circulable precursor to a document of value, which may have, besides the security element of the invention, for example, also authentication characteristics (such as, for example, luminescent substances provided within the volume). Valuable documents are considered here, on the one hand, documents made of security papers. On the other hand, documents of value can also be other documents and objects that can be provided with the security element of the invention in order that the documents of value have non-copyable authentication characteristics, thus making it possible to check authenticity and at the same time prevent unwanted copying.
    [0064] An embossing tool is also provided having an embossing area with which the shape of the facets of a security element of the invention (including its developments) can be embossed inside the vehicle or inside a vehicle layer.
    [0065] The embossing area preferably has an inverted shape of the contour of the surface to be embossed, so this
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    17/37 inverted form is advantageously produced by the formation of corresponding depressions.
    [0066] Additionally, the security element of the invention can be used as a controller for the display of volume holograms or for purely decorative purposes.
    [0067] To expose the volume hologram, a photosensitive layer on which the volume hologram must be formed can be brought directly or through the intermediary of a transparent optical medium, in contact with the front side of the controller and thus with the front side of the security element.
    [0068] Next, the photosensitive layer and the controller are exposed with a coherent beam of light, thus causing the volume hologram to be written inside the photosensitive layer. The procedure can be identical or similar to the procedure for producing a volume hologram as described in DE 10 1006 016 139 A1. The basic procedure is described, for example, in paragraphs 70 to 79 on pages 7 and 8 of the printout indicated in connection with figures 1a, 1b, 2a and 2b. The total content of DE 10 2006 016 139 A1 in connection with the manufacture of volume holograms is hereby incorporated into this application.
    [0069] It is evident that the characteristics mentioned above and those to be explained below are usable not only in the combinations indicated, but also in other combinations or isolated, without exceeding the scope of the present invention.
    [0070] In the following the invention will be explained in more detail by way of example with reference to the attached drawings, which also describe characteristics essential to the invention. For clarity, the figures avoid a representation that is true in scale and proportion. Shown are:
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    18/37 [0071] element of
    Figure 1 [0072] security
    Figure 2 is a plan view of a bank note having one according to the invention;
    an enlarged plan view of part of the first surface area 3 of the security element 1;
    [0073] Figure 3 figure 2;
    [0074] Figure 4 figure 2;
    [0075] Figure 5 figure 2;
    [0076] Figure 6 a cross section view along line 7 in a cross section view along line 10 in a cross section view along line 11 in a cross section view to explain the formation of a system thin film of color change over the facets;
    [0077] Figure 7 is an additional sectional view to explain an additional color change thin film system over the facets;
    [0078] Figures 8a-8c seen from a security element according to the invention according to an additional embodiment in different inclined positions;
    [0079] Figures 9a-9c seen of a security element according to the invention still according to an additional embodiment in different inclined positions, and [0080] Figure 10 a plan view of an additional embodiment of the security element of the invention;
    [0081] Figure 11 is a schematic sectional view of a security element in Figure 10;
    [0082] Figure 12 is a schematic view to explain the function of the arrangement of the micro-optical representation in the second surface area of the security element of the invention;
    [0083] Figure 13 is a schematic sectional view of an additional embodiment of the security element of the invention;
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    19/37 [0084] Figure 14 is a sectional view of another embodiment of a security element of the invention;
    [0085] Figure 15 is a sectional view of another embodiment of a security element of the invention, and [0086] Figure 16 is a schematic sectional view of an embossing tool for manufacturing the security element of the invention according to Figure 11 .
    [0087] In the embodiment shown in figure 1, the security element 1 of the invention is integrated into a bank note 2 such that the security element 1 is visible from the front side of the bank note shown in figure 1.
    [0088] The security element 1 which is configured as a reflective security element 1 with a rectangular outer contour, comprises a first surface area 3 (here the digits of the number 50) as well as a second surface area 4 joining the first surface area 3, so that the two sand regions 3 and 4 together fill the total area that is bounded by the rectangular outer contour.
    [0089] The first surface area 3 is divided into a multiplicity of reflective pixels 5 of which a small portion is represented enlarged in figure 2 as a plan view. The 5 pixels here are square and have a border length in the range of 10 to several 100 pm. Preferably, the edge length is not greater than 300 pm. In particular, it can be in the range between 20 and 100 pm.
    [0090] The length of the border of pixels 5 is chosen so that the area of each pixel 5 is smaller than the area of the first surface area 3 (digits of the number 50) by at least two orders of magnitude.
    [0091] Each pixel 5 has several reflective facets 6 of identical orientation in the modality described here. Veneers 6 are the sloping areas of a reflective sawtooth railing. In a modification not
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    20/37 represented, however, it is also possible that several or all pixels 5 respectively have only a single facet 6.
    [0092] In figure 3 the sectional view is shown along line 7 for three neighboring pixels 51,542 and 53, so the representation in figure 3, as well as in the other figures, is not true in scale, but is exaggeratedly strong for the benefit of representability. Additionally, to simplify the representation in figure 3, as well as in figures 4 and 5, the reflective coating on facets 6 is not reduced.
    [0093] The sawtooth railing of pixels 51, 52 and 53 is formed on an upper side 8 of a vehicle 9, whereby the upper side thus structured is preferably coated with a reflective coating. The vehicle 9 can be, for example, a radiation curing plastic (UV resin) which is applied to a vehicle sheet (for example a PET sheet) not shown.
    [0094] As can be seen in figure 3, the α slope of facets 6 is identical in each individual pixel 51, 52 and 53. However, the slope of facets 6 of neighboring pixels 51, 52, 53 is different. In addition, the d3 grating period of the pixel 53 sawtooth structure is also different from the d1 and d2 grating periods of the sawtooth structures of pixels 51 and 52. Due to the different orientation of facets 6 of individual pixels 51, 52 and 53, the light L1, L2, L3 incident along a predetermined direction R is reflected by each pixel 51, 52, 53 in a directional way in different reflection directions, as shown schematically in figure 3. Because of facets 6 the pixels 5 of the first surface area 3 are always oriented differently, a brightness effect or an effect comparable to a metallic varnish is obtained for the observer.
    [0095] The different orientation of facets 6 can be adjusted not only by choosing the angle of inclination α of facets 6, but also by the different azimuth angles Φ. Regarding the direction according to
    Petition 870190106215, of 10/21/2019, p. 36/65
    21/37 arrow P1 in figure 2, the azimuth angle Φ1 of facets 6 of pixels 51, 52 and 53 respectively matters at 90 °.
    [0096] The azimuth angle Φ2 of facets 6 of pixel 54 matters at approximately 120 ° (relative to the direction of the arrow P2), however, and the azimuth angle Φ3 of facets of pixel 55 matters at approximately 280 ° (relative to direction of arrow P3). Sectional views along lines 10, 11 of pixels 54 and 55 are shown in figures 4 and 5.
    [0097] Through the different orientation thus existing of individual facets 6 in pixels 5, the brightness effect described above is achieved by visualizing the first surface area 3.
    [0098] The second surface area 4 can be configured as a normally reflective planar area, so that the digits of the number 50 (first surface area 3) are clearly distinguished from the second surface area 4 due to the effect described.
    [0099] Azimuth angles can, for example, be chosen randomly for individual pixels 5. In particular, random values between 0 and 360 ° can be selected. For α inclination of facets 6, values ranging from 10 ° to 20 ° and from -20 ° to -10 ° can be chosen, for example. It is also possible to choose the inclination of the facets of a strip, for example -20 ° to 20 °. Here, too, the slopes can again be chosen at random.
    [00100] It is possible that the slope chosen randomly α corresponds to a normal distribution. The azimuth angles Φ chosen at random can in particular be evenly distributed. The grating period or the width of the sawtooth d is preferably above 1 pm and in particular above 3 pm. In addition, the grating period d can also be over 5 pm. However, it is preferably always chosen as soon as at least two facets 6 are present per pixel 5. In particular, at least three, four, or more facets 6 can be contained per pixel 5.
    Petition 870190106215, of 10/21/2019, p. 37/65
    22/37 [00101] Facets 6 are preferably configured as flat area elements. It is also possible, however, that the facets 6 are curved (for example, concave or convex). Facets 6 can extend straight, as shown for facets 6 of pixels 51 - 55 in figure 2. However, a non-straight course (for example, slightly curved) is also possible, as schematically shown for pixel 56 in figure 2.
    [00102] In addition, a color changing thin film system 18 or a thin film system 18 can be steam deposited on the upper side 8 or on the reflective coating 12 on the upper side 8, as shown in figure 6 The reflective coating 12 can be configured as a metal film on which a dielectric layer 13 is provided as well as an upper metal layer 14 which are partially transparent. It is certainly also possible to form on the metal film 12 a thin film dielectric system comprising first, second and third layers 15, 16, 17, whereby the first and third layers 15, 17 have a higher refractive index than the second layer 16 (figure 7).
    [00103] With such construction it is possible to replace known safety inks in which the platelet-shaped pigments with a thin film interference coating change their color depending on the viewing angle. A comparable optical effect is achieved so that the optically noticeable quality is considerably better compared to safety inks. Considerably brighter colors can be produced with the security element of the invention.
    [00104] In figure 8b is shown a development of the security element 1 of the invention. The orientation of the facets 6 is chosen here so that they have only a relatively small angle of inclination respectively in the region of the middle strip shown in white. For example, tilt angles can be chosen from the ± 5 ° range. The further away that the facets 6 are in the middle, the greater the average angle of inclination, so that the angles of inclination increase continuously in the ascending
    Petition 870190106215, of 10/21/2019, p. 38/65
    23/37 direction in figure 8b and decrease continuously in the downward direction in figure 8b. In other words, the limits of the range from which the inclination angles can be chosen change towards greater inclination angles with increased distance from the medium. The azimuth angles are respectively chosen here from such a range that the average reflection angle is ascending in the upper region and descending in the lower region.
    [00105] Looking perpendicularly, by means of perpendicular illumination, on the security element 1 shown in figure 8b, the digits of the number 50 appear brighter in the region of the middle strip 20 than in the other regions, which is indicated by the white representation. The described brightness effect also certainly still occurs, because the pixels still have different directions of reflection (here within the described limits).
    [00106] Now when tilting the safety element 1, the strip 20 rolls apparently upwards or downwards during the inclination. In figure 8a an inclined position is shown in which the lower region of the security element 1 is inclined into the sheet plane and thus the upper part of the security element 1 inclined out of the sheet plane. In this case, strip 20 has apparently traveled upward. In figure 8c the opposite inclination is shown, in which the upper part is angled into the sheet plane and the lower part of the security element angled out of the sheet plane. In this case, strip 20 has apparently traveled downward. Such an effect is also called a scroll bar.
    [00107] In particular when the safety element 1 is configured as a safety thread 19 (figure 1), it is appropriate to use arrangements in which they are not only individual strips 20 traveling through the slope, but the effect is periodically continued. Thus, for example, for a security thread 19 emerging on the surface of bank note 2 in certain window regions, a multiplicity of such effects can be repeated periodically in a repetition of, for example, 5 mm. In
    Petition 870190106215, of 10/21/2019, p. 39/65
    24/37 a window region with, for example, a height of 10 mm, the effect can therefore also be perceived at least twice, that is, there are always at least two shiny strips 20 to be seen.
    [00108] It is also possible to preset the average orientation of the facets of the individual pixels such that, by tilting the security element 1, a bar extending perpendicularly to the tilt axis moves along the tilt axis. This case is indicated in figures 9a to 9c. In figure 9b, the appearance of the security element 1 is represented by perpendicular visualization and lighting. There is a medium strip 20 present which, in the tilted position, appears brighter than the remaining regions of the first surface area 3 and which extend vertically here.
    [00109] When the security element 1 is then inclined (figure 9a shows the inclination at which the bottom side is inclined into the sheet plane, and figure 9c shows the inclination at which the bottom side is inclined out of the plane), the vertical bar 20 apparently travels from left to right.
    [00110] The average inclination in the region of the strip 20 is relatively low in the position of figure 9b and respectively increases continuously to the right and to the left. The azimuth angles are chosen here so that the facets are aligned upwards in the left region, for example, downwards in the right region, for example. Thus, the described effect can be obtained, so here too the impression of brightness is obtained again due to the random variation of the orientation of the facets of different pixels, even if only a certain range of narrow variation is predefined by region.
    [00111] According to a modality not shown here, the security element 1 can be arranged on a banknote 2 which still contains a security feature that is preferably based on magnetic pigments in the form of platelets which are aligned with respect to to the surface of the banknote such that they show a so-called
    Petition 870190106215, of 10/21/2019, p. 40/65
    25/37 scroll bar effect. Such alignments can be taken in particular from US 7,517,578 B2. The security element 1 and the magnetic security feature are arranged here in relation to each other such that the glossy strip of the security element 1 and the glossy strip of the magnetic security feature travel in mutually perpendicular directions by tilting the banknote 2.
    [00112] In addition to the described movement of the strip by tilting the safety element, other known kinetic effects can also certainly be performed by tilting the safety element 1, such as the so-called flip, operation or pumping effects.
    [00113] Some of the effects described above are impossible or at least very difficult to perform with conventionally known pigment inks.
    [00114] The security element of the invention can be manufactured by first dividing the first surface area 3 computationally into pixels 5. Next, a desired orientation is computationally predefined for each pixel 5. Said orientation can correspond, for example, to average orientation expected from a known safety paint pigment. In particular, a grating period or the sawtooth width d can be predefined. The substantially random variation of facet orientations 6 is then preferably carried out so that starting from such a preferred orientation, the orientation of facets 6 of individual pixels 5 is then varied, for example, on the basis of computer generated random numbers or pseudo-random numbers. It can thus be achieved in particular that the orientations of facets 6 of the individual pixels 5 float around a predefined average orientation. Random variations in orientation can be made in one or two dimensions or spatial directions. Therefore, the variation can in particular also refer only to the slope α or only to the azimuth angle Φ,
    Petition 870190106215, of 10/21/2019, p. 41/65
    26/37 or the variation of facet orientations 6 can be chosen such that a beam of incident light reflected in a corresponding partial region disperses around a predefined direction of rotation. Based on this data, the sawtooth structures of the individual pixels 5 can then be produced, for example, by means of gray scale lithography. This structure can then be electroformed and embossed on the UV 9 lacquer sheet by mass production. Subsequently, the metal film 12 is vapor deposited and then optionally the thin film interference coating 18.
    [00115] In the security element 1 of the invention, the orientations of facets 6 of pixels 5 can be produced with high accuracy, so that a very high resolution can be obtained on the low scale of pixel length 5. In particular, the arbitrarily sharp or smooth transitions can be produced by the individual pixels 5. The orientation can be defined as described for each facet 6, and the security element 1 can then be manufactured according to this definition.
    [00116] The security element 1 of the invention can be configured as a security thread 19 (Figure 1). In addition, the security element 1 can not only, as described, be formed on a vehicle sheet from which it can be transferred to the value document in the known manner. It is also possible to form security element 1 directly on the value document. It is also possible to make a direct impression with the subsequent embossing of the security element on a polymer substrate, in order to form a security element according to the invention on plastic banknotes, for example. The security element of the invention can be formed on many different substrates. In particular, it can be formed on or on a paper substrate, a paper with synthetic fibers, that is, paper with an x content of polymeric material in the range of 0 <x <100% by weight, a plastic sheet, for example , a sheet of polyethylene (PE), polyethylene terephthalate (PET), polybutylene terephthalate
    Petition 870190106215, of 10/21/2019, p. 42/65
    27/37 (PBT), polyethylene naphthalate (PEN), polypropylene (PP) or polyamide (PA), or a multilayer composite, in particular a composite of several different sheets (composite and composite) or a composite of sheet paper (sheet / paper / sheet or paper / sheet / paper), whereby the security element can be provided on or over or between each of the layers of such a multilayer composite.
    [00117] In figure 10 an additional embodiment of the security element 1 of the invention is shown in plan view, in which the first surface area 3 is again formed by the digits of the number 50 and the second surface area 4 is adjacent to the first area of surface 3 such that the two sand regions 3 and 4 together fill the total area that is limited by the rectangular outer contour of the optically variable area pattern 1. The first region 3 can be configured in the ways described in connection with figures 1 to 9, so that, for example, the brightness effect of the invention and / or the described loud representation can be achieved. In particular, the scroll bar effect described in connection with figures 8a-8c can be provided.
    [00118] The second surface area 4 is configured here as a moiré expansion arrangement, which will be described in detail below, which represents the letter M for the observer with absolute depth information. This results for the observer in a total representation in which the two sand regions 3, 4 or the individual representations presented by the sand regions 3 and 4 render a total image, reason why the two sand regions 3, 4 preferably directly join one another .
    [00119] Advantageously, the two sand regions can be combined on the same vehicle 9 (which can be configured, for example, as a sheet strip) and in particular be embossed by the same operations.
    [00120] In figure 11, a schematic sectional view of the security element 1 is shown according to figure 10, whereby the sectional view shows a portion of the first surface area 3 which is joined on both sides by the second area of surface 4. The sectional view according to
    Petition 870190106215, of 10/21/2019, p. 43/65
    28/37 figure 11 is purely schematic and not true to be scaled and essentially serves to explain the construction.
    [00121] As indicated by the sectional view according to figure 11, vehicle 9 has a vehicle sheet 21 (which can be, for example, a sheet of PET) as well as layers of top and bottom embossing lacquer 22, 23.
    [00122] In the region of the first surface area 3, facets 6 of pixels 52 and 53 are represented schematically. By means of facets 6, the desired reflection of the individual pixels 52, 53 is obtained.
    [00123] In order to present the letter M with the desired absolute depth information in the second surface area 4, 23 microstructures 24 which can in particular be filled with ink are formed in the lower embossing lacquer layer. The microstructures 24 are arranged in a plane perpendicular to the drawing plane of figure 11 in a grid with fixed geometry (here, for example, a hexagonal grid) and, thus, in a first pattern of microstructure.
    [00124] The top embossing lacquer layer 22 is configured so that it has a multiplicity of microlenses 25 in the second surface area 4. The microlenses 25 are arranged in a plane perpendicular to the drawing plane of figure 11 in a grid with fixed geometry (here, for example, a hexagonal grid) and thus of surface in a first pattern, so that the first pattern is thus adjusted to the first microstructure pattern and the two patterns are thus aligned with each other that through visualization of the security element 1, the microlenses 25 form, together with the microstructures 24, a moiré expansion arrangement. The basic principle of a moiré extension arrangement is described, for example, in WO 2006/087138 A1, the total content of which is hereby incorporated.
    [00125] The moiré enlargement arrangement in the second sandy portion 4 forms an arrangement of the micro-optical representation 26, with which, as
    Petition 870190106215, of 10/21/2019, p. 44/65
    29/37 must be described in detail below, the letter M is thus represented to the observer in a multiple way here that it appears behind the security element 1. This is obtained by presenting different views of the object to be represented to the right eyes and left of the observer LA and RA (here the letter M) which shows the object viewed from the corresponding direction, respectively. In figure 12, for simplification of the representation, the object is reduced as a point, so the right eye of the RA observer sees the object at position 27 and the left eye of the LA observer sees the object at position 28. Therefore, the observer sees the object with his two eyes from different directions 29, 30 which intersect at position 31, so that for the observer, the object is located at position 31 and, consequently, at distance t1 behind the safety element 1. For the observer thus results in absolute depth information for the object.
    [00126] With the second surface area 4, an independent representation of the lighting direction is obtained, for example, at a constant angle of view, while in the first surface area 3, for example, the effect of brightness in one direction variable lighting.
    [00127] Through the moiré magnification arrangement in the second surface area 4, an absolute depth effect is obtained by which the periodically recurring letter M located at depth t1 is represented to the observer. The microstructures 24 can, as mentioned above, preferably be filled with ink so that the letters M, on the one hand, and the remaining region of the second surface area 4, on the other hand, appear matte but of a different color.
    [00128] The arrangement of the micro-optical representation 26 can be configured not only as a moiré enlargement arrangement, but, for example, also as a module enlargement arrangement, as described, for example, in WO 2009/000528 A1 . The content with respect to the formation of a module expansion arrangement of WO 2009/000528 A1 is hereby incorporated into the present application. With a disposition of
    Petition 870190106215, of 10/21/2019, p. 45/65
    30/37 magnification of the module, the image to be represented does not necessarily have to be composed of a grating of unique periodically repetitive motifs, in contrast to a moiré magnification arrangement. A single complex image with high resolution can be represented. In the moiré magnification arrangement, the image to be represented usually consists of unique motifs (here microstructures 24) which are periodically arranged in a railing and which are represented in the form magnified by the lenses 25, so the area associated with each motif maximum corresponds approximately to the area of the corresponding lens cell.
    [00129] In the described embodiment, the microlenses 25 as well as the sawtooth structures for the reflective facets 6 can be produced simultaneously side by side by means of only a single embossing of the embossing layer 22. Subsequently, the facets 6 only need to be metallized in order for them to act reflexively. The construction according to figure 11 is therefore quick to manufacture.
    [00130] A modification of the security element 1 of the invention is shown in figure 13 in which the arrangement of the micro-optical representation 26 has, instead of the microlenses 25, concave mirrors 32 which are formed by embossing the lacquer layer embossing lower 23 and applying a mirror coating.
    [00131] Facets 6 of pixels 52, 53 are also formed on the lower embossing lacquer layer 23. They can be formed in the same way as concave micro mirrors 32 by embossing and mirror coating. Preferably, the concave micro-mirrors 32 and the facets are embossed in the same step and coated by a mirror in the same step.
    [00132] Microstructures 24 can be provided not only in the second surface area 4, but also in the first surface area 3 and,
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    31/37 thus, above facets 6. This facilitates the manufacture of the security element 1. However, they can also be omitted.
    [00133] If the microstructures 24 are provided in the first surface area 3 and filled with paint, the first surface area 3 may (but does not have to) likewise appear slightly colored.
    [00134] In figure 14 is shown a construction of the security element 1 in which the concave micro-mirrors 32, the microstructures 24 and the facets 6 are respectively embossed separately in their own embossing lacquer layers 23, 22 and 33 Between the embossing lacquer layers 23 and 22 a first vehicle sheet 21 is provided and between the embossing lacquer layers 22 and 33 a second vehicle sheet 34.
    [00135] This construction requires more work steps for manufacturing compared to the variants according to figures 11 and 13, but offers the advantage that the production of the concave micro mirrors 32 and the facets 6 can be carried out separately from each other. The original of the concave micro-mirrors 32 can still be the same in different designs because only a homogeneous area covered with concave micro-mirrors 32 is always required. Once an original with very good imaging properties has been manufactured, it can be used for manufacturing of many different security elements 1. Additionally, the concave micro-mirrors 32 and the facets 6 can be metallized differently, for example, with different metals or coatings with color changing effects (for example thin film systems in which the color varies in depending on the viewing angle).
    [00136] In the variants according to figures 13 and 14 with the concave micro mirrors 32, an additional protective lacquer layer (not shown) can also be advantageously provided on the upper or lower side of the security element 1, so that the strength, as well as protection against forging molding, can be increased.
    Petition 870190106215, of 10/21/2019, p. 47/65
    32/37 [00137] In particular by visualizing the security element 1 in the light transmitted against a bright light source, the arrangement of the micro-optical representation 26 may also have, instead of a microfocus element grid (grid of the microlenses 25 or grid of concave micro mirrors 32), only one orifice grid 35, as shown in figure 15. Such orifice grid 35 can be realized, for example, by holes or slits periodically arranged in an opaque layer, for example, reflectively metallized. The holes here can be small gaps. In this case, the holes can be called positive holes. Orifices so-called negative orifices can also be provided, whose orifices are small, non-transparent or non-mirrored regions.
    [00138] In the embodiment shown in figure 15, the orifice grid also extends into the first surface area 3, so that the superposition of the representations results in the first surface area 3. The security element 1 can certainly also be configured such that no hole grid is present in the first surface area 3.
    [00139] Additionally, in the security element 1 of the invention, the arrangement of the micro-optical representation 26 can be carried out by means of diffractive structures. Therefore, for example, a hologram with a stereographic 3D representation that is constructed of microscopically small sine rails can be provided.
    [00140] Alternatively, the object represented by means of the arrangement of the micro-optical representation 26 can also apparently reside or float in front of the security element 1.
    [00141] The arrangement of the micro-optical representation 26 and / or the facets 6 can be provided totally or partially with a color changing coating, in particular a thin film with reflector / dielectric / absorber. This makes it possible to further increase the optical attractiveness and still increase the resistance to the forge.
    Petition 870190106215, of 10/21/2019, p. 48/65
    33/37 [00142] In the modality examples described so far, the arrangement of the micro-optical representation 26 in the second surface area 4 was respectively configured in order to obtain a stereographic representation with depth information. This is understood here as representations in which a three-dimensional effect is generated by the security element 1 providing the observer's right and left eyes with different views of an object that respectively show the visualized object in a corresponding direction. From these different views, absolute depth information results for an observer, resulting in the whole in a three-dimensional impression. The representations employed in this class can often have more than just two different views, which usually also results in a parallax (that is, by rotating the image components in the foreground to move relative to the image components at the bottom of the image) . In some cases, one can, for example, by rotation, also look behind an object that is in the foreground.
    [00143] This can be accomplished technically by three-dimensional holograms, for example, holograms exposed directly or computer generated stereograms. Additional examples are microlens tilt images and moire magnifying arrangement with a depth effect or kinetic effect, as described, for example, in WO 2007/076952 A2 or WO 2009/000527 A1.
    [00144] In an additional modality, the arrangement of the micro-optical representation 26 can now be configured such that the parallax does not exactly match the parallax of an object located in depth. This can be accomplished, for example, by the provision of extension of moirés or provision of extension of modules. It can thus be achieved that by tilting or rotating the safety element 1, an additional kinetic effect occurs in the second surface area 4. This can be an ortho-paralytic movement, as described, for example, in WO 2007/076952 A2, so representations for the right and left eyes of the observer
    Petition 870190106215, of 10/21/2019, p. 49/65
    34/37 allow no indication of a depth, strictly speaking, due to the viewing directions from which the observer sees the object with his left and right eyes not crossing. In a preferred variant, only a relatively small parallax error is present, so that the viewing directions (29 and 30 in figure 12) always intersect and the viewer sees an object that moves by tilting or rotating the safety element 1, but that it, despite the parallax error, clearly varies, for example in a depth located behind the plane of the safety element 1.
    [00145] In the formalism of matrix A of application WO 2009/000528 A1, a representation with correct parallax corresponds to a representation with matrix A that is only populated on the diagonal. In an orthopalactic representation, matrix A is only populated in places not diagonally located. A small parallax error is present when matrix A is populated diagonally as well as to the side.
    [00146] In an additional embodiment of the security element 1, the representation by means of the arrangement of the micro-optical representation 26 can change from a first image to a second by tilting or rotating the security element 1. Thus, for example, an image, located in depth of a first symbol A, could tilt in at least one other representation, for example a symbol B, by tilting the security element 1.
    [00147] The arrangement of the micro-optical representation 26 can also perform additional effects in addition to a three-dimensional effect, for example, tilt images or kinetic effects (movements, pumping effect, etc.). In the aforementioned arrangement of module expansion, the three-dimensional representation in the second surface area 4 can move by tilting the safety element 1. Alternatively, as from a certain angle of inclination the representation could also tilt into the representation of a completely different object
    Petition 870190106215, of 10/21/2019, p. 50/65
    35/37 not necessarily in the same way looking three-dimensional (for example, a number located in the depth can change to another representation, for example a symbol to follow moving through the slope).
    [00148] It is especially advantageous in modalities where the arrangement of the micro-optical representation 26 and the facets 6 are embossed in the same layer of embossing lacquer 22 (figures 11 and 14) as a layout of the micro-optical representation 26 can be improved for the security element 1 of the invention with extremely little effort. It is merely necessary to write facets 6 additionally between or beside microlenses 25 or concave micro mirrors 32 upon production.
    [00149] The security element 1 of the invention can also be designated an optically variable area pattern and used, for example, for purely decorative purposes.
    [00150] In figure 16, an embossing tool 36 is shown schematically with which facets 6 as well as microlenses 25 can be embossed on the top embossing lacquer layer 22 of the security element 1 according to figure 11. For this purpose, the embossing tool 36 has an embossing area 37 in which the inverted shape of the surface structure to be embossed is formed.
    [00151] A corresponding embossing tool can not only be provided for the mode according to figure 11. An embossing tool can also be made available in the same way for the other described modes.
    [00152] List of Reference Signs
    Security feature
    Banknote
    First surface area
    Second surface area
    Pixel
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    Facet
    Line
    Top side
    Vehicle
    Line
    Line
    Reflective coating
    Dielectric layer
    Top metal layer
    First layer
    Second layer
    Third layer
    Thin film system
    Thin film system
    Strip
    Railing period
    Slope
    Azimuth angle
    Direction
    Direction
    Direction
    Incident light
    Incidence direction
    Vehicle sheet
    Embossed lacquer top layer
    Embossed lacquer bottom layer
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    Microstructures
    Microlenses
    Layout of the micro-optical representation
    Position
    Position
    Vision direction
    Vision direction
    Position
    Concave mirror
    Embossed lacquer layer
    Second vehicle sheet
    Orifice grid
    Embossing tool
    Embossing area
    Right eye
    Left eye
    权利要求:
    Claims (20)
    [1]
    1. Security element (1) for security paper, document of value (2) or similar, characterized by the fact that it has:
    a vehicle (9) having a reflected surface area (3) that is divided into a multiplicity of reflected pixels (5), where the area of each pixel (5) is smaller than the area of the surface area (3 ) reflective by at least an order of magnitude, where each pixel (5) has at least one reflective facet (6) that is formed on a vehicle surface (9), where at least one reflective facet (6) reflects light incident along a predetermined direction over the surface area (3) directionally in a predetermined reflection direction by the orientation of said facet (6), in which the orientations of facets (6) of different pixels (5) have a random variation over the reflective surface area (3) in which the orientations of the facets (6) of different pixels (5) have a random variation around the different mean orientations predefined in a region-based manner, resulting in different mean reflection directions re of pixels (5).
    [2]
    2. Security element (1) according to claim 1, characterized by the fact that several of the pixels (5) respectively have several reflective facets (6) of identical orientation which form a periodic or aperiodic sawtooth railing .
    [3]
    Security element (1) according to any one of claims 1 to 2, characterized by the fact that the facets (6) are configured as flat area elements.
    [4]
    4. Security element (1), according to any one of claims 1 to 3, characterized by the fact that the facet orientations (6) of different pixels (5) have a random variation only in one of the parameters that determines the orientation of the facets (6).
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    2/4
    [5]
    5. Security element (1) according to any one of claims 1 to 4, characterized by the fact that the variation of the reflection directions that is predefined by the random variation of the facet orientations (6) of different pixels (5) it matters at least about 1 °, preferably at least about 3 °, particularly and preferably at least about 10 °.
    [6]
    Security element (1) according to any one of claims 1 to 5, characterized by the fact that when several facets (6) are provided per pixel (5) that form a periodic or aperiodic sawtooth railing, the sawtooth width is between about 1 pm and 300 pm, preferably between 3 pm and 100 pm, particularly and preferably between 5 pm and 30 pm.
    [7]
    Security element (1) according to any one of claims 1 to 6, characterized in that the pixels (5) are arranged in a regular grid.
    [8]
    Security element (1) according to any one of claims 1 to 7, characterized by the fact that a reflective coating (12) or an increase in thickness is formed on the facets (6), at least in certain regions. reflection.
    [9]
    Security element (1) according to any one of claims 1 to 8, characterized in that a color-changing layer (18) is formed on the facets (6).
    [10]
    Security element (1) according to any one of claims 1 to 9, characterized by the fact that the maximum extension of a pixel (5) is between 5 pm and 5 mm, preferably between 10 pm and 300 pm, particularly and preferably between 20 pm and 100 pm.
    [11]
    11. Security element (1) according to any one of claims 1 to 10, characterized by the fact that the reflective surface area (3) is divided into at least two portions that have average reflection directions different from the pixels ( 5) which are predefined by the different average orientations.
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    3/4
    [12]
    12. Security element (1) according to claim 11, characterized in that the at least two portions with different mean reflection directions are distributed over different mutually interlaced partial areas.
    [13]
    13. Security element (1) according to any one of claims 1 to 12, characterized in that the orientation of the facets (6) is chosen such that the reflective surface area (3) has a continuous course of directions pixel reflection averages (5).
    [14]
    Security element (1) according to any one of claims 1 to 13, characterized in that the security element (1) is combined with an arrangement of the micro-optical representation (26) within a total representation .
    [15]
    15. Document of value (2) characterized by the fact that it has a security element (1), as defined in any one of claims 1 to 14.
    [16]
    16. Document of value (2), according to claim 15, characterized by the fact that it also has a security feature that is based on magnetically aligned pigments, preferably in the form of a plate of optically variable security inks and that has a optical appearance comparable to the appearance of the security element (1).
    [17]
    17. Document of value (2), according to claim 15 or 16, characterized by the fact that at least in certain regions a layer of color change is formed on the facets (6) of the security element (1) 18), and the color changing effect of the color changing layer (18) is adjusted such that the color changing effects of the security element (1) and the color changing effects of the pigment-based security feature magnetically aligned correspond to each other.
    [18]
    18. Value document (2) according to any one of claims 15 to 17, characterized by the fact that the security element (1) and the security feature based on the magnetically aligned pigments respectively have an additional optical effect,
    Petition 870190106215, of 10/21/2019, p. 56/65
    4/4 so that the additional optical effects produced correspond to each other.
    [19]
    19. Manufacturing method for a security element (1) for security papers, documents of value or similar, characterized by the fact that it comprises the steps of providing a vehicle (9) having a surface (8) that is modulated in height in a surface area (3) so that the surface area (3) is divided into a multiplicity of pixels (5) with respectively at least one facet (6), overlay said facets (6) so as to form facets ( 6) reflective reflecting incident light along a predetermined direction over the surface area (3) per pixel (5) respectively directionally in a reflection direction predefined by its orientation, make the area of each pixel (5) smaller than the area of the surface area (3) by at least one order of magnitude, arrange that the orientations of the facets (6) of different pixels (5) have a random variation on the reflective surface area (3), in which the orientation of facets (6) from different pixels (5) has a random variation around the different predefined average orientations in a region-based manner, resulting in different average reflection directions regionally from the pixels (5).
    [20]
    20. Embossing tool (36) characterized by the fact of having an embossing area (37) with which the shape of the facets (6) of a security element (1), as defined in any of the claims 1 to 14, can be embossed inside the vehicle (9).
    类似技术:
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    同族专利:
    公开号 | 公开日
    BR112012013450A2|2016-04-12|
    US9176266B2|2015-11-03|
    EP3851290A1|2021-07-21|
    CN102712207B|2015-06-17|
    EP3216620A1|2017-09-13|
    AU2010327032B2|2014-07-24|
    EP3216620B1|2021-03-10|
    WO2011066991A3|2011-07-28|
    WO2011066991A2|2011-06-09|
    RU2564581C2|2015-10-10|
    RU2012127689A|2014-01-20|
    US20120319395A1|2012-12-20|
    CA2780458C|2017-10-31|
    DE102010047250A1|2011-06-09|
    AU2010327032C1|2015-12-03|
    AU2010327032A1|2012-06-21|
    EP2507068B1|2017-05-17|
    EP2507068A2|2012-10-10|
    CN102712207A|2012-10-03|
    CA2780458A1|2011-06-09|
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    法律状态:
    2018-03-20| B25A| Requested transfer of rights approved|Owner name: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH (DE) |
    2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-07-23| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2019-12-03| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2019-12-17| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 03/12/2010, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102009056932|2009-12-04|
    DE102010047250A|DE102010047250A1|2009-12-04|2010-10-04|Security element, value document with such a security element and manufacturing method of a security element|
    PCT/EP2010/007369|WO2011066991A2|2009-12-04|2010-12-03|Security element, value document comprising such a security element and method for producing such a security element|
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