EP2225110A1 - Sicherheitselement - Google Patents
SicherheitselementInfo
- Publication number
- EP2225110A1 EP2225110A1 EP08867771A EP08867771A EP2225110A1 EP 2225110 A1 EP2225110 A1 EP 2225110A1 EP 08867771 A EP08867771 A EP 08867771A EP 08867771 A EP08867771 A EP 08867771A EP 2225110 A1 EP2225110 A1 EP 2225110A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- security element
- element according
- metallic
- gratings
- elements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/373—Metallic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/21—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose for multiple purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/29—Securities; Bank notes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/351—Translucent or partly translucent parts, e.g. windows
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/40—Manufacture
- B42D25/405—Marking
- B42D25/41—Marking using electromagnetic radiation
-
- B42D2035/24—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
Definitions
- the invention relates to a security element for security papers, security documents and the like having a feature area that selectively influences incident electromagnetic radiation.
- the invention further relates to a method for producing such a security element as well as a security paper and a data carrier with such a security element.
- holograms To secure the authenticity of credit cards, banknotes and other value documents, holograms, holographic grating images and other hologram-like diffraction structures have been used for some years.
- Metallized embossed holograms which preferably consist of sinusoidal surface profiles with gratings of between about 600 nm and 2 ⁇ m, are nowadays used on innumerable banknotes as a sign of their authenticity.
- the grating periods of at least 600 nm used in the holograms can be produced not only with electron beam lithography equipment, but also by interferometric direct exposure with the help of a laser, whereby the forgery security of the holograms is significantly reduced.
- Holographic counterfeiting is most frequently done using dot-matrix systems, whose operation ultimately relies on the interference of laser beams.
- the object of the invention is to avoid the disadvantages of the prior art and in particular to provide a security element with an attractive visual appearance and high security against counterfeiting.
- the feature area contains metallic nanostructures in which volume or surface plasmons are excited by the incident electromagnetic radiation and / or resonance phenomena are caused.
- Plasmons are collective vibrations of the free electrons relative to the ion bodies in metals. In the so-called plasma frequency occurs an increased absorption of the exciting light. Recombination of plasmon into radiation can cause light scattering, especially if the metal is in particulate form.
- Surface plasmon polaritons SPs are electromagnetic radiation bound to metallic interfaces that spreads along their boundary layer, thereby absorbing. The excitation of surface plasmon polaritons via the Impulse matching of the incident light and the surface plasmon polaritons via a dielectric or via the reciprocal lattice vector of the periodic structuring of the metal surface.
- the feature area can be designed, in particular, as transparent or translucent.
- the feature area or the substrate of the security element may also be opaque.
- the feature area may contain different metallic nanostructures in different subareas, for example to produce areas of different colors within the security element.
- the feature area has metal nanoparticles as metallic nanostructures which are embedded in a carrier medium.
- the metallic nanoparticles have a largest dimension between 2 nm and 400 nm, preferably between 5 nm and 300 nm and particularly preferably between 10 nm and 200 nm.
- the metallic nanoparticles may be substantially spherical in shape, but may also be formed with a preferred direction, in particular as ellipsoids of revolution or in the form of a rod or plate.
- the metallic nanoparticles are formed from homogeneous metallic particles, in particular from Au, Ag, Cu or Al particles, since in these the described color effects in the visible spectral range are observable.
- other metals come into consideration, such as Ni, Cr, Wo, Vd, Pd and Pt and alloys of one or more of the metals mentioned.
- the metallic nano Particles may be formed from core-shell particles in which one of the core and shell materials is a metal, in particular Au, Ag, Cu, Al, another of the above-mentioned metals or a metal alloy.
- the other of the core and shell materials is also advantageously a metal or dielectric.
- one of the materials of core and shell is magnetic.
- the feature region may further comprise a mixture of different metallic nanoparticles, in particular a mixture of nanoparticles of different diameters.
- the carrier medium is preferably formed within the scope of the invention by a transparent or colored lacquer layer.
- the feature area has a structured surface with elevations and depressions, wherein the metallic nanoparticles are arranged in the depressions of the structured surface.
- the structured surface may in particular be formed by a thermoplastically embossable material or an embossed lacquer layer, in particular an embossed UV lacquer layer.
- the structured surface is suitably metallized.
- the structured surface can form a diffraction structure which spectrally splits the incident electromagnetic radiation.
- the structured surface may be formed periodically or stochastically in one or two spatial directions.
- the feature region may further include a metal layer over which the metallic nanostructures are disposed.
- the feature region contains a color shift-effect thin-film element which has a metal layer, an absorber layer and a dielectric spacer layer arranged between the reflection layer and the absorber layer, wherein the metallic nanoparticles are arranged in the dielectric spacer layer.
- the metal layer may be reflective or, if the security element is to be viewed in a transparent manner, also semitransparent.
- the feature region contains as metallic nanostructures one or more sub-wavelength gratings with grating periods below the wavelength of the visible light.
- the subwavelength gratings can be designed, for example, as binary structures that contain only flat metallic surface sections at only two different height levels, or as multilevel structures that contain only flat metallic surface sections at n different height levels, where n lies between 3 and 16.
- the subwavelength gratings have a z-shaped metal profile.
- the subwavelength gratings can also be combined with a diffraction structure which spectrally splits the incident electromagnetic radiation.
- the subwavelength gratings can have grating lines of a varying width.
- subwoofer gratings which have a lateral variation of the grating profiles, in particular a lateral variation of the tread depths, laterally produce different color impressions.
- any color images such as rasterized color images, which consist of a variety of small and different colored pixel elements.
- the security element contains a color image of a plurality of pixel elements, wherein the grating profiles within a pixel element are respectively constant and in which the grating profiles of differently colored pixel elements are formed differently according to the respectively desired color impression.
- the color impression of a pixel element can also be produced by color mixing subregions with different grating profiles. For example, three different types of subregions may be provided for the colors red, green and blue, and the color impression of each pixel element may be determined by the choice of the area proportions of the three subregions corresponding to the desired RGB value of the pixel.
- the color image generation by subwavelength gratings is particularly suitable for obliquely metallized vapor-deposited dielectric gratings, which exhibit different colors in transmission and reflection, as explained in more detail below. Due to the asymmetric grating profile, an asymmetry of the color appearance in the viewing angle in transmission or in reflection is generally observed as well.
- the lateral variation of the grating profile may in particular consist of a lateral variation of the trench depth of the metallized dielectric grating. In addition to binary structures, asymmetric multilevel profiles with laterally different depths are also possible.
- photoresist is applied to a grating substrate with laterally constant trench depth, so that the trenches are completely filled. Then, the substrate is applied with the applied photoresist with laser radiation laterally different intensity and the trenches partially exposed by removing the exposed photoresist.
- the grating periods of the sub-wavelength gratings are preferably between 10 nm and 500 nm, preferably between 50 nm and 400 nm and particularly preferably between 100 nm and 350 nm.
- FIG. 10 is a highly schematic representation of the chromaticity of certain subwavelength gratings according to the invention as a function of the embodiment of FIG. vapor angle Q, where (a) the color in reflection and in (b) the color in transmission, each shown in the zeroth order of diffraction,
- FIG. 11 shows a security element according to the invention whose feature area is provided with a metallized embossed structure with two superposed gratings,
- FIG. 15 shows in (a) to (c) three embodiments of micromotile elements that appear colored by filling with metallic nanostructures
- FIG. 16 shows an exemplary embodiment as in FIG. 15, in which both the micromotif elements and the surrounding velin region are nanostructured.
- Fig. 1 shows a schematic representation of a banknote 10, which is provided with two security elements 12 and 16 according to embodiments of the invention.
- the first security element is a see-through security element 12, which is arranged above a see-through area 14, for example a window area or a continuous opening, of the banknote 10.
- the second security element 16 is formed by an opaque, glued transfer element of any shape.
- Both security elements have metallic nanostructures in a feature area in which volume or surface plasmons are excited by incident visible light or resonance effects are produced which produce novel color effects that are difficult to counterfeit because of the small size of the respective coloring nanostructures.
- plasmas are the eigenmodes of collective free electron oscillations relative to the ion bodies in metals that can be excited by incident electromagnetic radiation.
- the freely movable charge carriers are excited to resonant oscillations, so that the light of this wavelength is preferably absorbed and scattered in all spatial directions. Radiation with wavelengths outside the resonance range, however, can pass largely undisturbed.
- FIG. 2 initially shows a see-through security element 20 having a substrate 22 and a feature area which is formed by a feature layer 24 applied over the entire area.
- the feature layer 24 includes a plurality of metallic nanoparticles 28 embedded in a carrier medium 26.
- Such a feature layer 24 can be produced, for example, by printing a transparent lacquer 26 in which prefabricated metallic nanoparticles 28 with desired properties are dissolved.
- the nanoparticles 28 have a diameter below the wavelength of the visible light, preferably between 300 nm and 5 nm and in particular between 200 nm and 10 nm.
- the nanoparticles 28 are gold or silver particles.
- other metals such as copper, aluminum, nickel, chromium, tungsten, vanadium, palladium, platinum or alloys of these metals, albeit partially in attenuated or modified form, show color effects due to plasmon excitation, so that these metals or metals Metal alloys as material for the nanoparticles 28 come into consideration.
- spherical nanoparticles 28 it is also possible to use particles of a different shape, such as ellipsoids of revolution, any polyhedra or else rod-shaped or platelet-shaped particles. From the spherical shape deviating particles show, if they are in a preferred direction in space are additionally dependent on the polarization direction of the incident light dependent effects.
- the nanoparticles 28 and the embedding medium 26 are matched to one another such that the resonant frequency of the embedded nanoparticles 28 in the green is at a wavelength of approximately 530 nm.
- the feature layer 24 When viewed in reflection 32, where the light scattered by the nanoparticles 28 dominates the color impression, the feature layer 24 therefore appears green.
- Transmission 34 shows the feature layer 24, on the other hand, is in the subtractive complementary color, ie with a red color impression.
- the feature area of the security element 20 may also be designed in the form of patterns, characters or an encoding. It is also possible to provide different metallic nanostructures in different partial areas of the feature area, for example nanoparticles 28 made of different materials and / or nanoparticles 28 of different shape and size. As a result, different areas of the feature area can be colored differently.
- the paint 26 provided with the coloring nanoparticles 28 may additionally contain conventional coloring or effect pigments to modify the observable color effects.
- various types of metallic nanoparticles 28, for example of varying diameter may be mixed together to cooperatively produce a desired color effect.
- measures can be taken to influence the spatial distribution of nanoparticles 28 initially dispersed homogeneously in a carrier medium or the preferred direction of non-spherical nanoparticles. This can be done, for example, by providing the nanoparticles with a magnetic core, so that they can be concentrated using spatially varying magnetic fields at the intended locations of the feature area.
- the nanoparticles 28 are initially still movable in the carrier medium 26.
- Functionalized surfaces of nanoparticles offer additional possibilities to influence the arrangement of nanoparticles. For example, it can be achieved by suitable functionalization of the surface that the particles are arranged at a specific distance and / or in a defined grid. In addition, appropriately selected functionalization can prevent clustering of the nanoparticles.
- the distribution of the nanoparticles 28 is specifically influenced by a structuring of the surface to which they are applied.
- a transparent UV-curing lacquer layer 40 can be provided in a conventional manner with a desired relief embossing, so that a structured surface with elevations 42 and depressions 44 is formed.
- a fluid medium 46, in which the nanoparticles 48 are dissolved, is then applied, for example printed, to the surface structured in this way. Subsequently, the fluid medium 46 is laced or wiped from the coated surface so that the nanoparticles 48 remain only in the depressions 44 but not on the raised surface areas 42.
- micro-gravure printing technology provides a tool mold whose surface has an arrangement of elevations and depressions in the form of a desired microstructure.
- the depressions of the mold are filled with a curable colored or colorless lacquer containing the nanoparticles, and the support to be printed is pretreated for a good anchoring of the lacquer.
- the surface of the mold is brought into contact with the carrier, and the paint in contact with the carrier is hardened in the recesses of the mold while being connected to the carrier.
- the surface of the tool mold is removed from the support again, so that the cured paint associated with the support is pulled out of the depressions of the mold with the nanoparticles.
- the visual impression can not only be generated by the effects of the plasmon excitation in the nanoparticles 48, but can also be influenced by diffraction effects on the structures given by the elevations 42 and depressions 44.
- FIG. 6 (a) shows a plan view of the feature region 60 of a security element according to the invention, in which the depressions 44 with the nanoparticles 48 are arranged periodically in two spatial directions. It is understood that the period lengths denoted px and py may be the same or different, so that the same or different diffraction color effects occur in the x-direction and the y-direction.
- FIG. 7 shows an exemplary embodiment 70 of a further variant of the invention, in which the nanoparticles 78 are integrated into a thin-film element 72 with a color-tilting effect.
- a reflective metal layer 74 for example an aluminum layer with a thickness of at least 10 nm
- a dielectric intermediate layer 75 made of a UV-curable material and a semitransparent absorber layer 76 are applied to a substrate 22, for example by an approximately 8 nm thick chromium layer can be formed.
- the interlayer dielectric layer 75 is preferably formed of a high refractive index support medium. It also contains the desired metallic nanoparticles 78, which can be achieved, for example, by mixing the nanoparticles 78 with the intermediate layer material before application. Overall, in the case of the reflection element 70 designed for reflection, the filter effect of the nanoparticles 78 is combined with the color filter effect of the color-shifting thin-layer system 72.
- the semitransparent absorber layer 76 may also be dispensed with. If the security element 70 is to be used in transmission, that is to say, for example, in the see-through window of a banknote, the lower metal layer 74 is expediently designed to be semitransparent. It is understood that the feature area can also be embodied in the exemplary embodiments of FIGS. 3 to 7 in the form of patterns, characters or a coding and that different metallic nanostructures can also be provided here in different subareas.
- the substrate 22 is both transparent and non-transparent
- the substrate 22 can be formed, for example, by a transparent or opaque plastic film remaining in the finished security element or by a transfer film which is removed after the security element has been transferred to the banknote 10 becomes.
- the substrate 22 may also be formed by the banknote paper itself.
- the nanoparticles can be suspended, for example, before printing in a primer and printed directly on the banknote paper.
- the preparation of the metallic nanoparticles themselves can be carried out by physical or chemical methods known to the person skilled in the art.
- a physical method is, for example, laser ablation.
- FIG. 8 shows a cross section through a security element 80 with a transparent carrier foil 82 onto which a UV embossing lacquer layer 84 is printed and embossed in the form of a rectangular profile which has a period length p, for example 300 nm, a ridge width b, for example 100 nm, and a pitch h, for example 100 nm.
- a metallic binary structure 86 embedded in the lacquer layers 84, 88 results, which exclusively produces flat metallic surface patterns. cuts at only two different height levels (metallic bi- grating).
- the width of the metal deposition in the lower plane is predetermined by the geometrical shading during vapor deposition, and that the thickness d of the metal film 90 is identical on the upper and lower planes.
- the regions 92, 94 and 96 below, inside and above the z-shaped metal profile may, in the general case, have different refractive indices m, n 2 and 113, respectively.
- the color values X (curve 100-R), Y (curve 102-R), and Z (curve 104-R) of the reflected light in the zeroth diffraction order are shown in dependency of the deposition angle Q.
- Fig. 10 (b) shows the color values X (curve 100-T), Y (curve 102-T) and Z (curve 104-T) of the transmitted light also in the zeroth diffraction order.
- the reflection of an object is at least 20%, so that the color spectrum reflected on the object stands out from the reflected light of the surrounding medium.
- the transmission may be lower for the perception of color since Usually only the transmitted light of the object is observed and the scattered light of the environment is obscured.
- a reflection of 30% to 60% and a transmission between 5% and 45% are obtained for the vapor deposition angle Q in the range between 30 ° and 90 °. At oblique Bedampf ungswinkeln thereby increases the transmission, while reducing the reflection.
- the color effect changes in the sub-wavelength gratings according to the invention when viewed in polarized light.
- inventive colorizing feature areas differ from colored surfaces produced by conventional means.
- the intensity of the color value Z blue
- the described subwavelength gratings may be combined with a diffraction structure which spectrally splits incident electromagnetic radiation.
- a security element 110 whose feature area is provided with a metallized embossed structure 112 with two superposed gratings.
- the grating with the smaller grating period p s forms a subwavelength grating of the type described above.
- This subwavelength grating is superposed with a second grating of a much larger period pi, which serves to produce a multiplication or spectral broadening of the above-described resonances of the subwavelength grating ,
- the plasmon resonances can be spectrally broadened. As a result, a wider range of the visible light spectrum can be influenced in its intensity than would be the case with a strictly periodic lattice.
- FIG. 12 shows a schematic plan view of a feature area 120 with a rectangular cross grid 122 that is periodic in two spatial directions.
- the sequence of hatched and non-hatched rectangles 124, 126 represents higher or lower metallized areas, as in cross section, for example are shown in Fig. 8.
- the period lengths in the x-direction and y-direction, px and py are generally different.
- the cross grating 122 produces a different color impression in the polarized light, depending on whether the light is polarized vertically or horizontally. For viewing With unpolarized light, the viewer perceives a mixed color.
- the period lengths px and py are the same, then the cross lattice when viewed with unpolarized light looks just as if viewed with vertically or horizontally polarized light.
- the arbitrarily shaped elements can be distributed statistically or stochastically on the surface that should appear in color.
- the variants described in the one-dimensional subwavelength gratings in particular the use of wood anomalies and the combination of the subwavelength gratings with diffraction gratings, can also be used for two-dimensional cross gratings and the one- or two-dimensional structural element arrangements.
- a particular advantage of the metallic nanostructures according to the invention is that they can be arranged even in small microstructures with dimensions of a few micrometers in a sufficient number of periods or quasi-periods.
- Typical examples of such microstructures are letters and symbols that form the micromotif images of a moiré magnification device.
- the mode of operation and advantageous arrangements for such moire magnification arrangements are described in the publications DE 10 2005 062132 A1 and WO 2007/076952 A2, the disclosure content of which is incorporated in the present application in this respect. If such microstructures are filled with nanostructures according to the invention, they can be imparted a sparklingness, which is difficult or impossible to achieve otherwise, in particular with a plurality of colors in a very small space.
- the color generation or blackening is accomplished by the excitation of plasmons in the respective nanostructures 152, 156, 158, as described above.
- the line grating 156 whose period should be significantly smaller than the wavelength of visible light, in addition to the color effect, a polarizing effect will be observed.
- the color that emerges in detail depends on the nature of the nanostructures and the nature of the dielectric embedding, as already explained in detail.
- the deterministic structures 156, 158 of FIGS. 15 (b) and (c) can be obtained by embossing in UV varnish and subsequent application. vaporizing a metal layer of suitable thickness can be produced. If necessary, instead of a simple metal layer, a layer system can additionally be applied, as described above, in order to additionally reinforce the plasmonic color effects.
- the surface areas provided with nanostructures may be located at the level of the vellum area or offset downwards or upwards relative to that level.
- Typical embossing depths are in the range between 10 nm and 500 nm for the nanostructures and up to a maximum of 10 ⁇ m for the microstructures.
- the velin region consists of an unstructured, smooth surface, while the surfaces forming the microstructures are provided with nanostructures.
- the reversed case is also possible in which the microstructures do not undergo additional structuring, but the surrounding vein area is nanostructured.
- a combination of both options is also possible, in which both the micromotif elements 160 and the surrounding velin region 162 are provided with nanostructures 164, 166, which each achieve different color effects.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007061979A DE102007061979A1 (de) | 2007-12-21 | 2007-12-21 | Sicherheitselement |
| PCT/EP2008/010747 WO2009083151A1 (de) | 2007-12-21 | 2008-12-17 | Sicherheitselement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2225110A1 true EP2225110A1 (de) | 2010-09-08 |
| EP2225110B1 EP2225110B1 (de) | 2021-06-16 |
Family
ID=40651754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08867771.1A Active EP2225110B1 (de) | 2007-12-21 | 2008-12-17 | Sicherheitselement |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9004540B2 (de) |
| EP (1) | EP2225110B1 (de) |
| DE (1) | DE102007061979A1 (de) |
| WO (1) | WO2009083151A1 (de) |
Families Citing this family (114)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005022018A1 (de) * | 2005-05-12 | 2006-11-16 | Giesecke & Devrient Gmbh | Sicherheitspapier und Verfahren zu seiner Herstellung |
| DE102006058513A1 (de) | 2006-12-12 | 2008-06-19 | Giesecke & Devrient Gmbh | Entwässerungssieb und Verfahren zu seiner Herstellung |
| DE102007029203A1 (de) | 2007-06-25 | 2009-01-08 | Giesecke & Devrient Gmbh | Sicherheitselement |
| DE102007029204A1 (de) * | 2007-06-25 | 2009-01-08 | Giesecke & Devrient Gmbh | Sicherheitselement |
| DE102007061827A1 (de) * | 2007-12-20 | 2009-06-25 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
| DE102007061828A1 (de) * | 2007-12-20 | 2009-06-25 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
| DE102007062089A1 (de) | 2007-12-21 | 2009-07-02 | Giesecke & Devrient Gmbh | Verfahren zum Erzeugen einer Mikrostruktur |
| DE102007061979A1 (de) | 2007-12-21 | 2009-06-25 | Giesecke & Devrient Gmbh | Sicherheitselement |
| DE102008008685A1 (de) * | 2008-02-12 | 2009-08-13 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
| DE102008009296A1 (de) * | 2008-02-15 | 2009-08-20 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
| DE102008013167A1 (de) | 2008-03-07 | 2009-09-10 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
| DE102008016795A1 (de) | 2008-04-02 | 2009-10-08 | Giesecke & Devrient Gmbh | Verfahren zum Erzeugen einer mikrooptischen Moiré-Vergrößerungsanordnung |
| DE102008028187A1 (de) * | 2008-06-12 | 2009-12-17 | Giesecke & Devrient Gmbh | Sicherheitselement mit optisch variablem Element. |
| DE102008027952A1 (de) | 2008-06-12 | 2009-12-17 | Giesecke & Devrient Gmbh | Sicherheitselement mit gerasterter Schicht aus Rasterelementen |
| DE102008029638A1 (de) * | 2008-06-23 | 2009-12-24 | Giesecke & Devrient Gmbh | Sicherheitselement |
| DE102008031325A1 (de) | 2008-07-02 | 2010-01-07 | Giesecke & Devrient Gmbh | Sicherheitselement sowie Verfahren zu seiner Herstellung |
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| US20070281177A1 (en) | 2006-05-31 | 2007-12-06 | Cabot Corporation | Colored Reflective Features And Inks And Processes For Making Them |
| DE102006029852A1 (de) | 2006-06-27 | 2008-01-03 | Giesecke & Devrient Gmbh | Verfahren zum Aufbringen einer Mikrostruktur, Werkzeugform und Gegenstand mit Mikrostruktur |
| DE102006029850A1 (de) | 2006-06-27 | 2008-01-03 | Giesecke & Devrient Gmbh | Sicherheitselement |
| DE102006039305A1 (de) | 2006-07-21 | 2008-01-24 | Giesecke & Devrient Gmbh | Sicherheitsfaden mit optisch variablem Sicherheitsmerkmal |
| DE102006050047A1 (de) | 2006-10-24 | 2008-04-30 | Giesecke & Devrient Gmbh | Durchsichtssicherheitselement mit Mikrostrukturen |
| DE102006055680A1 (de) | 2006-11-23 | 2008-05-29 | Giesecke & Devrient Gmbh | Sicherheitselement mit Metallisierung |
| DE102006058513A1 (de) | 2006-12-12 | 2008-06-19 | Giesecke & Devrient Gmbh | Entwässerungssieb und Verfahren zu seiner Herstellung |
| DE102007016394A1 (de) * | 2007-04-03 | 2008-10-09 | Giesecke & Devrient Gmbh | Sicherheitselement |
| DE102007029204A1 (de) | 2007-06-25 | 2009-01-08 | Giesecke & Devrient Gmbh | Sicherheitselement |
| DE102007029203A1 (de) | 2007-06-25 | 2009-01-08 | Giesecke & Devrient Gmbh | Sicherheitselement |
| DE102007034716A1 (de) | 2007-07-23 | 2009-01-29 | Giesecke & Devrient Gmbh | Sicherheitselement |
| DE102007039591A1 (de) | 2007-08-22 | 2009-02-26 | Giesecke & Devrient Gmbh | Gitterbild |
| DE102007061827A1 (de) | 2007-12-20 | 2009-06-25 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
| DE102007061828A1 (de) | 2007-12-20 | 2009-06-25 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
| DE102007061979A1 (de) | 2007-12-21 | 2009-06-25 | Giesecke & Devrient Gmbh | Sicherheitselement |
| DE102007062089A1 (de) | 2007-12-21 | 2009-07-02 | Giesecke & Devrient Gmbh | Verfahren zum Erzeugen einer Mikrostruktur |
| DE102008008685A1 (de) | 2008-02-12 | 2009-08-13 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
| US8408353B2 (en) | 2008-02-12 | 2013-04-02 | Jtekt Corporation | Vehicle steering apparatus |
| DE102008009296A1 (de) | 2008-02-15 | 2009-08-20 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
| DE102008013167A1 (de) | 2008-03-07 | 2009-09-10 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zu seiner Herstellung |
| DE102008016795A1 (de) | 2008-04-02 | 2009-10-08 | Giesecke & Devrient Gmbh | Verfahren zum Erzeugen einer mikrooptischen Moiré-Vergrößerungsanordnung |
| DE102008027952A1 (de) | 2008-06-12 | 2009-12-17 | Giesecke & Devrient Gmbh | Sicherheitselement mit gerasterter Schicht aus Rasterelementen |
| DE102008028187A1 (de) | 2008-06-12 | 2009-12-17 | Giesecke & Devrient Gmbh | Sicherheitselement mit optisch variablem Element. |
| DE102008029638A1 (de) | 2008-06-23 | 2009-12-24 | Giesecke & Devrient Gmbh | Sicherheitselement |
| DE102008031325A1 (de) | 2008-07-02 | 2010-01-07 | Giesecke & Devrient Gmbh | Sicherheitselement sowie Verfahren zu seiner Herstellung |
| DE102008032224A1 (de) | 2008-07-09 | 2010-01-14 | Giesecke & Devrient Gmbh | Sicherheitselement |
| DE102008046511A1 (de) | 2008-09-10 | 2010-03-11 | Giesecke & Devrient Gmbh | Darstellungsanordnung |
| DE102009035413A1 (de) | 2009-07-31 | 2011-02-03 | Giesecke & Devrient Gmbh | Identifikationsdokument mit einer personalisierten visuellen Kennzeichnung sowie Verfahren zu dessen Herstellung |
| DE102009041583A1 (de) | 2009-09-15 | 2011-03-17 | Giesecke & Devrient Gmbh | Dünnschichtelement mit Interferenzschichtaufbau |
| DE102009042022A1 (de) | 2009-09-21 | 2011-03-24 | Giesecke & Devrient Gmbh | Langgestrecktes Sicherheitselement mit maschinenlesbaren magnetischen Bereichen |
-
2007
- 2007-12-21 DE DE102007061979A patent/DE102007061979A1/de not_active Withdrawn
-
2008
- 2008-12-17 US US12/809,334 patent/US9004540B2/en not_active Expired - Fee Related
- 2008-12-17 EP EP08867771.1A patent/EP2225110B1/de active Active
- 2008-12-17 WO PCT/EP2008/010747 patent/WO2009083151A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP2225110B1 (de) | 2021-06-16 |
| US20100307705A1 (en) | 2010-12-09 |
| DE102007061979A1 (de) | 2009-06-25 |
| WO2009083151A1 (de) | 2009-07-09 |
| US9004540B2 (en) | 2015-04-14 |
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