EP2920004A1 - Élément de sécurité pour un document de valeur et/ou de sécurité - Google Patents

Élément de sécurité pour un document de valeur et/ou de sécurité

Info

Publication number
EP2920004A1
EP2920004A1 EP13798963.8A EP13798963A EP2920004A1 EP 2920004 A1 EP2920004 A1 EP 2920004A1 EP 13798963 A EP13798963 A EP 13798963A EP 2920004 A1 EP2920004 A1 EP 2920004A1
Authority
EP
European Patent Office
Prior art keywords
optical structure
security element
coating
color
security
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
Application number
EP13798963.8A
Other languages
German (de)
English (en)
Other versions
EP2920004B1 (fr
Inventor
Roland Gutmann
Alexander MOMBRÉE
Michael Knebel
Christian Kunath
Jens Ehreke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bundesdruckerei GmbH
Original Assignee
Bundesdruckerei GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bundesdruckerei GmbH filed Critical Bundesdruckerei GmbH
Priority to PL13798963T priority Critical patent/PL2920004T3/pl
Publication of EP2920004A1 publication Critical patent/EP2920004A1/fr
Application granted granted Critical
Publication of EP2920004B1 publication Critical patent/EP2920004B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B42D25/378—Special inks
    • B42D25/387—Special inks absorbing or reflecting ultraviolet light
    • 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
    • B42D25/342—Moiré effects
    • 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks

Definitions

  • Security element for a value and / or security document
  • the invention relates to a security element for a value and / or security document, which is applied to a transparent layer, e.g. a film, wherein the security element has a first periodic optical structure on the first side of the transparent layer and a second periodic optical structure on the second side opposite the first side of the transparent layer.
  • the invention further relates to a value and / or security document with such a security element.
  • a transparent layer e.g. to provide a foil.
  • a transparent film may include, for example, a protective layer or a see-through element as a security element.
  • Security elements which represent high-quality copy protection elements, either require expensive production or production processes, such as, for example, the hologram, special and often expensive special pigments or other production-related aids for producing and displaying variable information or effects.
  • copy protection elements are known which have a so-called tilt effect when viewed from different angles.
  • these elements produce interference effects, also known as moire patterns.
  • moire patterns also known as moire patterns.
  • Document EP 1 780 681 B1 discloses a security element for copy protection in which a halftone line structure having a first frequency is applied to a substantially transparent substrate on a first side and a marking substance is applied to the second side.
  • the marker has two distinct regions, the first region including a second halftone line structure at a second frequency and the second region including a third halftone line structure at a third frequency.
  • the halftone structures form a (partial) coating of the substrate.
  • the object of the present invention is therefore to provide a security element which makes a copy protection element inexpensive and easy to manufacture, which also has a higher security against counterfeiting.
  • the task is to be able to equip it with such a security element in a simple and cost-effective manner.
  • the security element has a first periodic optical structure, eg a line grid or a dot matrix, which forms a first coating on the first side of the transparent layer, and a second periodic, optical structure, eg a line grid or a dot matrix, which has a second coating on the first side of the transparent layer opposite second side is formed, wherein the first optical structure and the second optical structure are arranged overlapping so that they for a ßu observer from a certain, predetermined angle to the surface of the coatings provided with the transparent layer or illumination angle of the light source used for verification, preferably a UV lamp, a color change effect, wherein the first coating has a first color and the second coating at least a second color, which is different from the first color having.
  • a first periodic optical structure eg a line grid or a dot matrix
  • the security element according to the invention thus advantageously provides a color change effect which can be realized inexpensively and simply by the use of printing technology alone. A surface structuring is not necessary.
  • the solution according to the invention makes use of the development of the technique to the extent that it is possible today to realize a high register-accurate printing on different sides of a layer, for example different sides of the film, by means of a suitable turning device. Due to the two-sided printing of the optical structures with different suitable colors visible to the viewer (first color, second color), by tilting the security element an increasing superimposition of the colors or an increasing separation of the colors on both sides of the transparent Layer are arranged. As a result, a viewing angle or illumination angle-dependent, adjustable color tone change (color change effect) is achieved.
  • the security element according to the invention is characterized by a high security against counterfeiting due to the high requirements with regard to the registration accuracy of the structures and is particularly suitable for increasing the security against counterfeiting for ID1 / ID3 plastic cards with multilayer construction.
  • the security element according to the invention has, in particular, a high security against counterfeiting if the color of the first coating and the color of the second coating are difficult to separate.
  • the spatial separation tion of the colors of the first coating and the second coating achieved a visible color change, which has a 3D effect (tilting effect) by the structure of the security element. When copying or scanning, this tilting effect disappears because the layers of the first and second coatings are collapsed.
  • a further advantage is that the security element according to the invention can be easily verified without further aids. It therefore represents a security element for the first control level.
  • color in the context of the present invention refers to the individual visual perception (body color) of the security element which is caused by reflection, absorption and / or emission of electromagnetic radiation on and / or in the security element and by a viewer when looking at the security element is perceived from a certain angle.
  • the color and, correspondingly, the color changes of the optical structures can e.g. in the RGB, CMYK or HSV color space or in the CI ELAB color space for body colors or in the CIE xy color space for self-luminous colors.
  • the visible to the viewer color results from a combination of additive and / or subtractive color mixing of the color of the first coating and the color of the second coating, when the facing the viewer coating is transparent.
  • an additive color mixture results in particular for electromagnetic radiation of a specific wavelength range which is emitted by the first coating and / or the second coating and also plays for the structural elements of the first optical structure and the second optical structure located next to each other under the respective viewing angle a role.
  • Subtractive color mixing occurs in all classic colors (absorption colors) and is particularly special importance for the structural elements, each with an absorption color, which are superimposed at the respective viewing angle.
  • the coating facing the viewer is substantially non-transparent, in particular not for UV light and / or visible light.
  • a color-changing effect can arise, at least under a certain, given visual angle, in that the optical structure of the coating facing away from the viewer at least partially disappears under the optical structure of the coating facing the viewer and therefore does not participates in additive and / or subtractive color mixing.
  • the color impression offered to the external observer is therefore determined substantially or completely by the optical structure of the coating facing the observer.
  • lateral illumination by means of a UV light source can stimulate the coating remote from the viewer to luminesce, which luminescence is then perceived by the viewer.
  • the layer With regard to the transparency of the transparent layer arranged between the first optical structure and the second optical structure, it is necessary for the layer to be transparent above all for at least a partial region of the visible wavelength range (380 nm to 780 nm) or the UV wavelength range. If a coloring agent (eg a pigment) is used for the first optical structure and / or the second optical structure, which is excited in a wavelength range arranged outside the visible wavelength range, then it is necessary for the transparent layer to additionally excite this excitation Wavelength range, which is preferably in the IR wavelength range or in the UV wavelength range, is additionally transparent.
  • the transparent layer may be composed of two or more films or other layers. In this case, the films or other layers which carry the first optical structure and the second optical structure may have to be assembled with high register accuracy during the production of the security element.
  • the color change effect achieved is particularly clear to the observer if the first optical structure and the second optical structure are arranged relative to one another such that the elements of the first optical structure, for example, the lines of the first optical structure, are located below a specific, predetermined viewing angle range or illumination angle range Elements of the second optical structure, for example, completely cover the lines of the second optical structure.
  • This means that in this viewing angle range if the coating facing the viewer is transparent, the viewer will see a subtractive and / or additive color mixture of the colors of the two structures or, if closer to the viewer, the light used for viewing completely or almost completely absorbed, only perceives black elements of the first optical structure, while the second structure is no longer or only partially visible.
  • the thickness of the substrate and the undercut If the elements of the second optical structure are dependent on the elements of the first optical structure and can be adjusted, the observer can see the underlying second optical structure without influencing the first optical structure, so that a color change takes place. The viewer therefore perceives the color of the second optical structure at this tilt angle.
  • the object according to the invention is accordingly also solved by a security element which is applied to a layer which is transparent in the visible and UV wavelength range, e.g. a film, wherein the security element has a first periodic optical structure in the form of a line grid or a dot pattern, which forms a first coating on the first side of the transparent layer, and a second periodic optical structure in the form of a line grid or a dot matrix which forms a second coating on the second side opposite the first side of the transparent layer, wherein the first optical structure and the second optical structure are arranged overlapping in such a way that, for an external observer, they are subject to a specific, predetermined viewing angle nkel and under UV irradiation show a color change effect, wherein the first coating comprises a first color, which is not transparent to UV light and pigments having a visible colorful or achromatic body color, and the second coating has at least one second color, which from the first color e different and includes luminescent pigments, wherein the first optical structure and the second optical
  • the thickness of the transparent layer is in the range from 50 ⁇ m to 800 ⁇ m, preferably in the range from 50 ⁇ m to 800 ⁇ m. ranging from 70 ⁇ to 250 ⁇ , more preferably in the range of 1 00 ⁇ to 1 50 ⁇ . Since the tilting of the security element necessary for the color change effect depends on the film thickness and the spacing of the structural elements, eg the lines or the dots, the first optical structure and / or the second optical structure, this layer thickness is particularly well suited for the desired color change effect together with the usual line spacing of a line grid or dot matrix.
  • the color-changing effect is particularly noticeable to the observer if the first optical structure and the second optical structure are each designed as a line grid and if these line grids run parallel to one another at least in sections.
  • the distance between two adjacent structural elements, e.g. between two lines or two points, the first optical structure and / or the second optical structure is 0.1 to 100 times the thickness of the transparent layer, preferably 0.5 to 10 times the thickness of the transparent layer , particularly preferably 0.5 times to 3 times the thickness of the transparent layer.
  • the width of the structural elements for example the width of the lines or the dots, of the first optical structure and / or second optical structure is 0.1 to 1 00 times the thickness of the transparent layer, preferably 0.5 times to 10 times the thickness of the transparent layer.
  • the width of the structural elements in a 1 00 ⁇ thick film as a transparent layer about 1 00 ⁇ to 200 ⁇ amount.
  • the color difference of the first and / or the at least one second color between the state before and after the color change have a predetermined, sufficient value, preferably a value of ⁇ > 10. The most suitable are complementary colors. If the colors are too similar, a color change (dE> 10) can not be detected.
  • the first color and the at least one second color may be formed as metameric colors, ie achieve the same color impression before and / or after tilting.
  • the difference in color can only be recognized by arranging a filter between the security element and the observer, wherein the filter absorbs a predetermined wavelength range of the light and thus makes the color-changing effect visible.
  • the first optical structure and / or the second optical structure in their entirety contain visual and / or textual and / or numerical information.
  • the information represents a personalization.
  • Personalization is defined as pictorial and / or textual and / or numerical information that is unique or individual, e.g. for the holder of the value and / or security document having the security element or for the value and / or security document itself.
  • Such a personalization may be, for example, a serial number e.g. a banknote, the image or personal data and the like of the document holder, e.g. of the passport holder, or a ticket number.
  • the first optical structure and / or the second optical structure by means of a printing process, for example by means of flat, high, low, solid and / or digital printing, preferably by intaglio printing, by means of an offset printing method or by means of an inkjet Printing process, applied.
  • a printing process for example by means of flat, high, low, solid and / or digital printing, preferably by intaglio printing, by means of an offset printing method or by means of an inkjet Printing process, applied.
  • the process of inkjet printing is advantageous for applying a personalization that changes for each security element.
  • it is advantageous, for example, if one of the first optical structure or the second optical structure is designed, for example, as a fixed line grid.
  • the respective other optical structure is then calculated in such a way and, for example, likewise printed as a line grid, that of the at least two information which are displayed at different tilt angles, information includes a personalization, for example the image of the document holder.
  • the first coating has pigments which have a visible chromatic or achromatic body color
  • the second coating has luminescent pigments.
  • the first coating additionally comprises luminescent pigments, which preferably emit electromagnetic radiation having a wavelength which is different from the wavelength of the luminescent pigments of the second coating.
  • luminescent pigments in particular fluorescent pigments
  • host lattices doped with rare earth metals for example ytterbium, praseodymium, neodymium, europium, terbium, cerium, dysprosium, holmium, thulium, samarium-doped garnets, perovskites, oxides, sulfides, oxysulfides, phosphates, Silicates, fluorides, nitrides or selenides used, possibly with traces of heavy metals such as silver, copper, manganese.
  • rare earth metals for example ytterbium, praseodymium, neodymium, europium, terbium, cerium, dysprosium, holmium, thulium, samarium-doped garnets, perovskites, oxides, sulfides, oxysulfides, phosphates, Silicates, fluorides,
  • organic luminescent materials can be used, for example rhodamines, perylene dyes, isoindolinones, quinophthalones, oxazinones, coumarins, perinone Dyes.
  • the production of such luminescent materials is known to the person skilled in the art and described, for example, in the publication WO 81/03508 A1.
  • Commercially available luminescent pigments are, for example, LUMILUX CD 740 and LUMILUX Green CD 702 from Honeywell, Paliosecure Yellow from BASF and Cartax from Clariant.
  • Other luminescent materials can also "Phosphor Handbook", 2nd edition, ISBN-1 3 978-0849335648 or the book “Optical Document Security", 3rd edition, ISBN-13
  • the above object is also achieved by a value and / or security document with a security element specified above.
  • the advantages of the invention, which also apply analogously to the respective value and / or security document, have already been presented above.
  • the security element can be realized in a particularly simple manner if it is arranged in a window of the security and / or security document.
  • FIG. 1 shows a first exemplary embodiment of a security element according to the invention in a view from the side
  • FIG. 2 shows a second embodiment of a security element according to the invention in a view from the side
  • 3 shows a third embodiment of a security element according to the invention in a view from the side
  • FIG. 4 shows a fourth exemplary embodiment of a security element according to the invention in a view from the side
  • FIG. 5 shows a fifth embodiment of a security element according to the invention in a view from the side
  • FIG. 6 shows a sixth embodiment of a security element according to the invention in a view from the side
  • FIG. 7 shows a seventh embodiment of a security element according to the invention in a view from the side
  • FIG. 8 shows an eighth embodiment of a security element according to the invention in a view from above
  • FIG. 10 shows a section of the security and / or security document according to FIG.
  • Fig. 1 a section of the value and / or security document according to
  • FIG. 9 shows a second viewing angle and the CI E standard color system with a representation of the colors used for the color change effect for the preceding FIGS Figures explained embodiments of inventive security elements.
  • the film 1 shows a visible light transparent film 1 with a first line screen 10 as a first optical structure on the upper side and a second line screen 20 as a second optical structure on the underside of the film 1.
  • the film 1 consists for example of PC, PET, PETG, PVC, PE, PA and has a thickness d in the range of 50 ⁇ to 300 ⁇ . If the film 1 consists of PC, this preferably has a thickness in the range of 100 ⁇ to 150 ⁇ on.
  • the first line grid 10 and the second line grid 20 are shown in simplified form in FIGS. 1 to 7 by a single line or two or three lines, which are respectively shown perpendicular to the direction of travel from the side.
  • the respective optical structure has a line grid, i. a variety of parallel lines, up.
  • the embodiments shown can alternatively be realized as a dot matrix.
  • as periodic optical structures grids of squares, triangles, hexagons, rectangles, and / or similar geometric shapes may be used.
  • the lines of the first line grid 10 and of the second line grid 20 are arranged so that they do not lie above one another when viewed perpendicularly. This means that the free space between adjacent lines of the first line grid 110 is at least as large or larger than the width of the lines of the second line grid 20.
  • the lines of the first line grid 10 and the second line grid 20 are viewed from one another a direction perpendicular to the surface of the film 1 (see lines of sight 4, 5) each perceived in their own, separate color.
  • the lines of the first line For example, ters 10 appear to the observer as lines of red color and the lines of the second line screen 20 through the film 1 as lines of yellow color. The observer thus sees from a direction perpendicular to the surface of the film 1 a structure which contains juxtaposed red and yellow lines.
  • the light beam 1 passes in a region dependent on the tilt angle on the lines of the first line grid 10 and then reaches the lines of the second line screen 20 (see line of sight 8). Therefore, the colors of the superimposed optical structures influence each other in this area, so that, according to the laws of subtractive color mixing, the observer sees at an angle areas having an orange color. This color change from red or yellow to orange represents the color change effect explained above.
  • FIG. 2 corresponds to the sketched in Fig. 1 embodiment with the difference that even when viewed from above vertically, i. perpendicular to the surface of the film 1, the line grids 1 0 and 20 are partially arranged one above the other, so that the viewer also recognizes areas from the vertical viewing direction, which have an orange color (see line of sight 7).
  • the line grids 10, 20 of the exemplary embodiments illustrated in FIGS. 1 and 2 were each printed on the film 1 from both sides, for example by means of offset or inkjet printing.
  • the color of the lines of the line grid results in each case by corresponding pigments, which are contained in the respective printing ink.
  • the colors of the lines of the embodiments according to FIGS. 1 and 2 are produced by illumination with visible light.
  • FIGS. 3 and 4 very similar embodiments to FIGS. 1 and 2 are shown.
  • the third embodiment of FIG. 3 is analogous to the first embodiment of FIG. 1 and the fourth embodiment of FIG. 4 analogous to the second embodiment of FIG. 2.
  • the printing inks used are pigments which emit electromagnetic radiation in the visible wavelength range when irradiated with light from the UV wavelength range by means of a UV lamp.
  • the pigments used in the first line grid 10 'in FIG. 3 emit, for example, light from the visible red wavelength range and the pigments used in the second line grid 20' emit light from the visible green wavelength range.
  • the observer recognizes red and green lines offset from each other from a direction perpendicular to the surface of the film 1 of the third exemplary embodiment of a security element according to the invention (see lines of sight 4, 5).
  • lines of sight 4 As soon as the observer now tilts the security element to the vertical direction, parts of the line rasters 10 'and 20' overlap one another and the observer now perceives dark brown lines in certain areas (see line of sight 8).
  • the fifth to seventh embodiments include line grids arranged completely or partially directly above one another.
  • the UV lamp 1 2 is preferably arranged behind the viewer's eye. This also applies to the figures 3 and 4.
  • a second line screen 40 directly below the first line screen 30 is arranged in the fifth and sixth embodiments so that the lines of the second line screen 40 and 40 'are completely hidden by the lines of the first line screen 30 in a state in which the viewer perpendicular to the surface of the substrate 1 looks (see each line of sight 14). Therefore, the observer sees only black lines at this angle and in a small area around this angle.
  • ⁇ arctan (z / d) (1)
  • the viewer can see laterally past the lines of the first line grid 30 (see lines of sight 18, 19) and thus perceives the underlying line grid 40, which, for example, emits light in the red wavelength range under UV irradiation.
  • the viewer perceives an increasing proportion of red color with an angle> a, ie the color change takes place at the angle ⁇ in this exemplary embodiment.
  • the parameters mentioned above for the fifth exemplary embodiment can also be provided analogously in the embodiment shown in FIG. 6, the second line grid 40 'in this exemplary embodiment representing a composite line grid of adjacent lines with pigments which, under UV irradiation, have light with different colors Emit color.
  • the lines of the second line screen 40 ' are exemplarily composed of a first line 41 which emits light of the red wavelength range and a second line 42 which emits light of the green wavelength range. Due to the composite design of the second line grid 40 ', two color change effects are observed in this embodiment.
  • the observer looks from a first, oblique direction on the security element (see line of sight 18), he sees past the first line grid 30 on the second lines 42 of the second line screen 40 'and sees a green color. If the observer tilts the safety In the opposite direction from the vertical viewing direction, the observer recognizes the first lines 41 of the second line grid 40 ', which emit light from the red wavelength range, when tilted by a specific, predetermined angle.
  • FIG. 7 may be considered as a combination of the embodiments illustrated in FIGS. 3 and 5.
  • First lines 41 'of the second line grid 40 are arranged in the space between two lines of the first line grid 30' when viewed from the vertical direction (see line of sight 15) and therefore also visible when viewed from above (see view 17 '). The observer therefore sees black and red lines from the vertical direction under UV irradiation
  • the second lines 42 'of the second line grid 40 are arranged and become below the lines of the first line screen 30', analogously to the exemplary embodiment shown in FIG therefore visible only when tilting the security element to the vertical by a certain predetermined angle (see lines 18 and 19).
  • the foils 1 'of the embodiments 3 to 7 must also be transparent to the UV wavelength range in order to enable excitation of the pigments of the lines of the second line raster 20', 40, 40 ', 40 ".
  • the position of the observer (compare sight lines 14, 15, 18 and 19) of the exemplary embodiments according to FIG 7, the position of the light source (UV lamp 12) is changed in an analogous manner while the position of the observer remains unchanged.
  • the first line grid 30, 30 ' consists of a color layer which is UV absorbing and transparent to visible light.
  • the second line grating 40, 40 'and 40 which emits under UV irradiation, the same effect is achieved for the observer as in the variant illustrated in FIGS. 5 to 7.
  • FIGS. 3 to 7 are likewise produced by means of two-sided offset printing or inkjet printing on the film 1 '.
  • the printing inks contain pigments which emit light in the visible wavelength range when irradiated in the UV wavelength range.
  • FIG. 8 shows an eighth exemplary embodiment of a security element according to the invention in the form of an eagle, which, in analogy to the exemplary embodiment shown in FIG. 6, is composed of two line grids 30, 40 ', the security element being in the form of a value and / or security document an identification card 50 (see Fig. 9) is arranged.
  • the first line grid 30, which is composed of a multiplicity of black lines, is provided.
  • the second line grid 40 ' is arranged, which consists of a plurality of first (eg red, dotted lines shown here) 41 and second (eg, green, shown in phantom) lines 42, wherein each a first line 41 is adjacent to a second line 42.
  • a tilt of the badge 50 by an angle of for example at least 45 ° counterclockwise leads to a second color change effect from black to green, since at a certain predetermined angle, the second (For example, green) lines 42 next to the black lines of the first line grid 30 are visible.
  • the colors suitable for the exemplary embodiments explained above are shown in FIG. 12 on the basis of the CIE color system known per se.
  • the first item “red” represents the color of the first line screen 10, 10 'of the first to fourth embodiments (FIGS. 1 to 4), the color of the lines of the second line screen 40 of the fifth embodiment (FIG. 5) and the color for the first lines 41, 41 'of the second line grid 40', 40 "of the sixth to eighth embodiment (FIGS. 6 to 11) represent a security element according to the invention.
  • the second point “green” represents the color of the second line grid 20 'of the third and fourth embodiments (FIGS. 3 to 4) and the color for the second lines 42, 42' of the second line grid 40 ', 40 "of the sixth to respect, think highly of Exemplary embodiment (FIGS. 6 to 11) for a security element according to the invention.
  • the first coating and / or the second coating may additionally be provided with pigments which emit, reflect or absorb electromagnetic radiation in the wavelength range not visible to the human eye.
  • These pigments contain an additional security element, which is preferably machine-readable.
  • the embodiments shown above show a simple and inexpensive to manufacture security element, which offers a high security against counterfeiting especially due to its three-dimensionality.

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  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Printing Methods (AREA)
  • Credit Cards Or The Like (AREA)
  • Polarising Elements (AREA)

Abstract

La présente invention concerne un élément de sécurité pour un document de valeur et/ou de sécurité, ledit élément de sécurité étant disposé sur une couche transparente, p.ex. un film (1, 1'); l'élément de sécurité présentant une première structure optique périodique, p.ex. une trame de lignes (10, 30, 30') ou une trame de points, qui forme un premier revêtement sur la première face de la couche transparente, et une deuxième structure optique périodique, p.ex. une trame de lignes (20, 40, 40', 40'') ou une trame de points, qui forme un deuxième revêtement sur la deuxième face opposée à la première face de la couche transparente. Pour obtenir une meilleure protection anticopie, la première structure optique et la deuxième structure optique sont disposées de préférence de manière superposée de manière à présenter un effet de changement de couleur pour un observateur extérieur dans un angle d'observation (α) ou un angle d'éclairage donné, prédéfini, le premier revêtement présentant une première couleur et le deuxième revêtement présentant au moins une deuxième couleur qui est différente de la première couleur.
EP13798963.8A 2012-11-16 2013-11-15 Élément de sécurité pour un document de valeur et/ou de sécurité Active EP2920004B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13798963T PL2920004T3 (pl) 2012-11-16 2013-11-15 Element zabezpieczający dla dokumentu wartościowego i/lub zabezpieczonego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012111054.9A DE102012111054B4 (de) 2012-11-16 2012-11-16 Sicherheitselement für ein Wert- und/oder Sicherheitsdokument
PCT/EP2013/073970 WO2014076245A1 (fr) 2012-11-16 2013-11-15 Élément de sécurité pour un document de valeur et/ou de sécurité

Publications (2)

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EP2920004A1 true EP2920004A1 (fr) 2015-09-23
EP2920004B1 EP2920004B1 (fr) 2017-01-18

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EP13798963.8A Active EP2920004B1 (fr) 2012-11-16 2013-11-15 Élément de sécurité pour un document de valeur et/ou de sécurité

Country Status (9)

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US (1) US20160303889A1 (fr)
EP (1) EP2920004B1 (fr)
CN (1) CN104781088B (fr)
AU (1) AU2013346725B2 (fr)
BR (1) BR112015009648B1 (fr)
DE (1) DE102012111054B4 (fr)
ES (1) ES2622368T3 (fr)
PL (1) PL2920004T3 (fr)
WO (1) WO2014076245A1 (fr)

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US10036125B2 (en) * 2015-05-11 2018-07-31 Nanotech Security Corp. Security device
SI3305543T1 (sl) * 2016-10-04 2019-12-31 Hueck Folien Gesellschaft M.B.H. Varnostni element in vrednostni dokument s tem varnostnim elementom
DE102016015500A1 (de) * 2016-12-23 2018-06-28 Giesecke+Devrient Currency Technology Gmbh Datenträger mit Lumineszenzbereichen
DE102017106721A1 (de) * 2017-03-29 2018-10-04 Leonhard Kurz Stiftung & Co. Kg Verfahren zum Herstellen einer Mehrschichtfolie und eine Mehrschichtfolie sowie ein Sicherheitselement und ein Sicherheitsdokument
US10272712B2 (en) * 2017-05-09 2019-04-30 Abcorp Na Inc. Plastic card with security feature
AT521847A1 (de) * 2018-11-09 2020-05-15 Hueck Folien Gmbh Verfahren zur Herstellung eines Sicherheitsmerkmals
DE102019119687A1 (de) * 2019-07-19 2021-01-21 Bundesdruckerei Gmbh Sicherheitsmerkmal für ein Sicherheits- oder Wertdokument, mit mindestens einem Leuchtstoff, der im ultravioletten Spektralbereich anregbar ist und der im infraroten Spektralbereich emittiert
JP7540442B2 (ja) * 2019-09-12 2024-08-27 日本電気株式会社 画像解析装置、制御方法、プログラム
DE102020000027A1 (de) * 2020-01-03 2021-07-08 Giesecke+Devrient Currency Technology Gmbh Optisch variables Sicherheitselement

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DE102009060506A1 (de) * 2009-12-23 2011-06-30 Giesecke & Devrient GmbH, 81677 Sicherheitselement und Herstellverfahren dafür
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Publication number Publication date
BR112015009648A2 (pt) 2017-07-04
EP2920004B1 (fr) 2017-01-18
CN104781088B (zh) 2018-04-17
AU2013346725A1 (en) 2015-05-07
US20160303889A1 (en) 2016-10-20
DE102012111054B4 (de) 2023-10-19
DE102012111054A1 (de) 2014-06-05
WO2014076245A1 (fr) 2014-05-22
PL2920004T3 (pl) 2017-07-31
CN104781088A (zh) 2015-07-15
AU2013346725B2 (en) 2017-07-27
ES2622368T3 (es) 2017-07-06
BR112015009648B1 (pt) 2021-06-15

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