EP2996881B1 - Security element, production method, data carrier equipped with the security element and method for checking the authenticity - Google Patents
Security element, production method, data carrier equipped with the security element and method for checking the authenticity Download PDFInfo
- Publication number
- EP2996881B1 EP2996881B1 EP14724313.3A EP14724313A EP2996881B1 EP 2996881 B1 EP2996881 B1 EP 2996881B1 EP 14724313 A EP14724313 A EP 14724313A EP 2996881 B1 EP2996881 B1 EP 2996881B1
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- EP
- European Patent Office
- Prior art keywords
- color
- light
- visible
- color layer
- security element
- 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.)
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Images
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
-
- 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
- B42D25/355—Security threads
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
- G07D7/12—Visible light, infrared or ultraviolet radiation
- G07D7/128—Viewing devices
-
- B42D2035/20—
-
- 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
Definitions
- the invention relates to a security element for data carriers, in particular for value documents, identity documents and the like.
- the invention further relates to a data carrier equipped with the security element, to a method for checking the authenticity of the data carrier and to a method for producing the security element.
- luminescent security elements For protection against counterfeiting, especially with color copiers or other reproduction methods, data carriers such as banknotes, securities, credit cards, identity documents, passports, certificates and the like, labels, packaging or other elements for product protection are provided with luminescent security elements. These include fluorescent fibers or planchettes (small colored discs), which are mixed as a security feature in paper production under the paper pulp. In addition, fluorescent security threads made of plastic, metal or other material are used, which are completely or partially embedded in the paper during paper production. Also known is the use of fluorescent imprints that are invisible or colorless in normal light, but fluorescent under UV light. Fluorescence is generally understood to mean a transient emission of light that ends within 10 -8 seconds. Instead of fluorescent inks and phosphorescent or photochromic inks are used.
- the luminous effect lasts for phosphorescent materials after the end of the irradiation, depending on the material from 10 -8 seconds to several seconds or hours.
- Photochromic ink changes color upon excitation with UV light. If the UV light source is removed, the color change takes for some time before the color returns to its original state.
- a special case of a photochromic printing ink is the iridescent photochromic printing ink. Iridescent or pearlescent colors contain transparent pigments consisting of tiny foil-covered tiny mica flakes. They cause an interference of the incoming light. This results in shiny, pearl-like shimmering effects with a change in color at different viewing angles or lighting angles.
- a luminescent security element for securing banknotes comprising two or more areas, each area containing a material or combination of materials, the two or more areas showing different visible colors under first viewing conditions, including visible light; Substantially the same visible colors under second viewing conditions, the second viewing conditions comprising a combination of visible light and UV light (see claim 2 of the EP 1 567 358 B1 ).
- the present invention has the object, a security element of the aforementioned To provide a type that offers an increased level of security against counterfeiting and at the same time can be easily checked for authenticity.
- a data carrier with such a security element and a method for producing such a security element should be provided.
- ultraviolet light refers particularly to light having a wavelength in a range of 235 to 380 nm.
- daylight color is understood to mean a color based on light in a wavelength range from 380 nm to 750 nm.
- the synonyms body color and color are also used below.
- the term "motif” is to be understood in particular as a pattern or a picture.
- the subject can also provide the viewer with information convey, for example, by having a character, a string or an image information.
- planar figure is known in the art (see “ Mathematical Formulary ", Konrad Wittwer KG, Stuttgart, 1984, pages 12-15 ).
- polygon refers in particular to an n-corner with n ⁇ 3.
- microscopic is not to be understood as meaning “micrometer-sized” or the like, but is merely to be understood as relative.
- the microscopic individual elements (which are also referred to below simply as “microelements”) are in each case perceptible to the viewer with the naked eye, ie without the use of optical aids, and are composed in an overall image, ie a macroscopic motif.
- the invention is based on the idea of achieving a dynamic effect in a micro / macro image by the interaction of luminous colors or luminescent inks, in particular fluorescent inks, and body colors or colored inks by means of a suitable design.
- the dynamic effect is based on a light-dark interaction of a repeating microelement structure contained in the macroscopic motif and can, in particular, during oscillating (ie by a periodic "back and forth") of the transition of (1) the illumination of the security element with (2) a UV light / daylight lighting situation in approximately the 1: 1 ratio to (3) a substantially pure UV lighting situation can be observed.
- the thus created play of light of the microscopic individual elements causes a dynamic in the macroscopic motif.
- Decisive for the dynamic effect is the periodic change of the distance between the UV light source and the security element.
- the percentage ratio of daylight / UV light changes in particular in a range of 70/30 to 30/70. Since the human eye regards the brighter image components of a motif as superficial or dominant, the dynamic motion effect when changing the brightness of motif elements located close to one another, eg lines, points or circles, is particularly impressive.
- the change in brightness is produced by the change in the distance between the UV light source and the security element, whereby the illuminance of, for example, a fluorescent color increases quadratically in the course of the shortening of the distance. In this way, at a greater distance the brighter daylight color becomes dominant, at a smaller distance the fluorescent color, which otherwise appears darker in daylight.
- the dynamic motion effect unfolds depending on the choice and arrangement of the microelements e.g. in the form of an optical illusion-induced rotational effect (i.e., the motion of a rotating wheel) or in the form of a "pumping action" otherwise known in holograms (i.e., the periodically changing three-dimensional appearance of a subject) or the like.
- a rotational effect can be e.g. by bringing together the microelements so that together they form a pattern with rotational symmetry, in particular a pattern with rotational symmetry and mirror symmetry.
- the joining of the microelements can take place without gaps or with spacing. For example, white areas or unprinted areas may be present between the individual microelements.
- fluorescent pigments and fluorescent dyes in particular organic colorants
- the optical effect of which is based on their ability to absorb UV radiation and in the form of visible light without delay, ie with volatility, within 10 -8 Seconds ending light emission, to send out.
- Phosphorescent materials are less preferred, but can be used provided that the duration of the afterglow does not affect the detectability of the dynamic motion effect.
- the security element according to the invention can be excitable in particular at two or more wavelengths and then show different fluorescent shades as a function of the wavelength.
- Fig. 10 illustrates the construction of a security element in a cross-sectional view.
- the illustrated security element does not fall within the scope of the present claims, but the embodiment shown is mentioned for a better understanding of the present invention.
- the present invention is based on the principle of a dynamic color change game, which is obtained by combining a daylight color with a luminescent color. These basics are based on the FIGS. 1 to 15 described.
- the yellow fluorescent color of the color layer 3 is invisible when viewed in daylight alone and appears yellow when viewed in UV light.
- FIGS. 1 to 3 show the structure of the printing plates for the production of in Fig. 10 shown security elements in plan view.
- Fig. 1 shown printing form is provided for the production of the color layer 1 in dark blue daylight color.
- Fig. 2 shows the printing plate for the production of the color layer 2 in light green daylight color.
- Fig. 3 shows the printing plate for the production of the color layer 3 in yellow fluorescent color.
- Fig. 4 illustrates the construction of the compression, by the in the FIGS. 1 to 3 shown printing forms is available.
- the compression has an outer, rectangular border 4 and an inner region 5.
- the ink of the rectangular border 4 is exclusively on the in Fig. 1 shown printing form back.
- the inner region 5 contains one through the pressure forms of Fig. 1 and the Fig. 2 generated background pressure and several, by means of the printing plate of the Fig. 3 overprinted areas.
- Fig. 5 shows the security element of Fig. 10 in top view when viewed in pure sunlight. The viewer perceives a first information formed by vertical, light green stripes 7 and a dark blue background 6.
- Fig. 6 shows the security element of Fig. 10 in plan view when viewed substantially in pure UV light. The viewer perceives a second information formed by vertical, yellow stripes 10 and a very dark background 9.
- Fig. 7 shows the security element of Fig. 10 in plan view when viewed under daylight and UV light in a ratio of about 1: 1.
- the yellow fluorescent color with the underlying dark blue daylight color mixes by additive color mixing to a green which corresponds to the daylight green of the regions 12.
- a monochrome surface is created for the eye.
- Fig. 11 shows the security element of Fig. 5 in the pure sunlight.
- Reference numeral 8 designates the color layers formed with fluorescent dye which are invisible under the present viewing conditions.
- the reference numerals 6 and 7 indicate the visible, formed with dark blue or light green daylight color layers.
- Fig. 12 shows the security element of Fig. 6 in pure UV light.
- Reference numeral 10 denotes the color layers formed under the present viewing conditions and formed with yellow fluorescent color.
- Reference number 9 indicates the color layers formed with daylight color, which are invisible under the present viewing conditions.
- Fig. 13 shows the security element of Fig. 7 when viewed under daylight / UV light in the ratio of about 1: 1.
- Reference numeral 11 denotes the green to be recognized by the additive color mixing of the yellow fluorescent color and the dark blue daylight color.
- the reference numeral 12 indicates the visible to the viewer, formed by daylight color green.
- the dynamic light interplay in the course of the periodic movement of the UV light source is based on the FIGS. 8, 9 . 14 and 15 illustrated.
- the brightness of the fluorescent dye increases, conversely, this decreases as the distance increases.
- the brightness of the daylight colors changes inversely by reducing the amount of daylight when the object is immersed in a UV chamber or by shading by means of a UV flashlight moving above the object. In other words: reducing the distance to the UV lamp, the fluorescent color becomes lighter than the daylight color, as the distance increases, the daylight color becomes brighter than the fluorescent color.
- FIGS. 8 Plant view and 14 (cross-sectional view) show the security element of Fig. 10 when viewed under daylight / UV light in the ratio of about 1: 2.
- the areas with the reference number 13 are perceived by the viewer with light green color, while the areas with the reference number 14 with dark green color.
- Figures 9 (Plan view) and 15 (cross-sectional view) show the security element of Fig. 10 when viewed under daylight / UV light in the ratio of about 2: 1.
- the areas numbered 13 are perceived by the viewer with a dark green color, while the areas numbered 14 are perceived with a light green color.
- Fig. 16 shows a macroscopic motif 15, in which many individual elements 16 are arranged in the form of a planar cascade.
- a cascade is an arrangement of cascaded, similar graphical elements to understand.
- multiple arrangement of the individual elements is by a brightness shift (ie, an inversion or reversal of the contrast) creates the impression of a movement.
- a brightness shift ie, an inversion or reversal of the contrast
- the direction of movement can be varied.
- That in the Fig. 17a shown single element has three areas A, B and C in three different brightness levels.
- the areas are generated in the present example by means of daylight color in the raster print, with each area a different area coverage is selected.
- That in the Fig. 17a The single element shown contains three areas with an area coverage of 10%, 50% and 100% respectively.
- the darkest area with a coverage of 100% is additionally equipped with a fluorescent paint 20 or is overprinted with fluorescent paint 20.
- Fig. 17b shows the brightness of the areas A, B and C of the single element when viewed in daylight.
- Fig. 17c shows the brightnesses of the areas A, B and C of the single element when viewed in lighting with a combination of daylight and UV light to substantially equal parts.
- Fig. 17d shows the brightness of the areas A, B and C of the single element when viewed in UV light.
- That in the Fig. 18a shown single element has four areas A, B, C and D in four different levels of brightness.
- the areas are generated in the present example by means of daylight color in the raster print, with each area a different area coverage is selected.
- That in the Fig. 18a The individual element shown contains four areas with an area coverage of 10%, 40%, 70% and 100%, respectively.
- the darkest area with a coverage of 100% and the second darkest area with an area coverage of 70% is additionally equipped with a fluorescent color 21 or is overprinted with fluorescent ink 21.
- Fig. 18b shows the brightness of the areas A, B, C and D of the single element when viewed in daylight.
- Fig. 18c shows the brightnesses of the areas A, B, C and D of the single element when viewed in lighting with a combination of daylight and UV light to substantially equal parts.
- Fig. 18d shows the brightnesses of the areas A, B, C and D of the single element when viewed in UV light.
- Fig. 19a shows the brightness of the areas A, B, C and D of the single element when viewed in daylight.
- Fig. 19b shows the brightnesses of the areas A, B, C and D of the single element when viewed in lighting with a combination of daylight and UV light to substantially equal parts.
- Fig. 19c shows the brightnesses of the areas A, B, C and D of the single element when viewed in UV light.
- the realization of a single element can be carried out over any form of screening of a single color or as multicolor printing of different shades of gray or hues of different brightness or also by partial overprinting of two hues.
- the coverage ratio changes accordingly, since in this case there can be no 100% area coverage. In this case a maximum coverage of 70 to 80% is achieved.
- the production is basically process-independent, ie it can be done for example by means of offset printing, intaglio printing, screen or flexographic printing.
- the printing processes can be combined with one another, eg daylight color in offset, intaglio or screen printing and fluorescent ink in inkjet, screen or flexo printing.
- Fig. 20a shows the partial overprint of different colored areas 22 and 23 of different brightness.
- Surface 22 is blue, surface 23 light green.
- the fluorescent color is printed in this example congruent over the blue surface 22 or can be mixed into this.
- the brightest surface (with an area coverage or gray scale of 10%) is paper white.
- FIG. 12 shows the superimposition pressure having the blue area 24, the dark blue area 25, the light green area 26, and the white area 27.
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Printing Methods (AREA)
- Credit Cards Or The Like (AREA)
Description
Die Erfindung betrifft ein Sicherheitselement für Datenträger, insbesondere für Wertdokumente, Ausweisdokumente und dergleichen. Die Erfindung betrifft des Weiteren einen mit dem Sicherheitselement ausgestatteten Datenträger, ein Verfahren zum Überprüfen der Echtheit des Datenträgers und ein Verfahren zum Herstellen des Sicherheitselements.The invention relates to a security element for data carriers, in particular for value documents, identity documents and the like. The invention further relates to a data carrier equipped with the security element, to a method for checking the authenticity of the data carrier and to a method for producing the security element.
Zum Schutz gegen Nachahmung, insbesondere mit Farbkopierern oder anderen Reproduktionsverfahren, werden Datenträger, wie etwa Banknoten, Wertpapiere, Kreditkarten, Ausweisdokumente, Pässe, Urkunden und Ähnliches, Labels, Verpackungen oder andere Elemente für die Produktsicherung mit lumineszierenden Sicherheitselementen ausgestattet. Dazu gehören fluoreszierende Fasern oder Planchetten (kleine farbige Scheibchen), die bei der Papierherstellung als Sicherheitsmerkmal unter die Papiermasse gemischt werden. Darüber hinaus werden fluoreszierende Sicherheitsfäden aus Kunststoff, Metall oder anderem Material verwendet, die bei der Papierherstellung ganz oder teilweise in das Papier eingebettet werden. Bekannt ist auch die Verwendung fluoreszierender Aufdrucke, die im Normallicht unsichtbar bzw. farblos sind, aber unter UV-Licht fluoreszieren. Unter Fluoreszenz versteht man allgemein einen flüchtigen Lichtaustritt, der innerhalb von 10-8 Sekunden endet. Anstelle von fluoreszierenden Druckfarben werden auch phosphoreszierende oder photochrome Druckfarben verwendet. Der Leuchteffekt dauert bei phosphoreszierenden Materialien nach dem Ende der Bestrahlung an, je nach Material von 10-8 Sekunden bis zu mehreren Sekunden oder Stunden. Photochrome Druckfarbe wechselt ihre Farbe bei Anregung mit UV-Licht. Wird die UV-Lichtquelle entfernt, dauert der Farbwechsel noch einige Zeit an, bevor die Farbe wieder in den Originalzustand zurückwechselt. Ein Sonderfall einer photochromen Druckfarbe ist die irisierende photochrome Druckfarbe. Irisierende oder Perleffekt-Farben enthalten transparente Pigmente, die aus mit dünner Folie bedeckten winzigen Glimmerplättchen bestehen. Sie bewirken eine Interferenz des einstrahlenden Lichts. So entstehen glänzende, perlartig schimmernde Effekte mit einem Farbtonwechsel bei unterschiedlichem Betrachtungs- bzw. Beleuchtungswinkel.For protection against counterfeiting, especially with color copiers or other reproduction methods, data carriers such as banknotes, securities, credit cards, identity documents, passports, certificates and the like, labels, packaging or other elements for product protection are provided with luminescent security elements. These include fluorescent fibers or planchettes (small colored discs), which are mixed as a security feature in paper production under the paper pulp. In addition, fluorescent security threads made of plastic, metal or other material are used, which are completely or partially embedded in the paper during paper production. Also known is the use of fluorescent imprints that are invisible or colorless in normal light, but fluorescent under UV light. Fluorescence is generally understood to mean a transient emission of light that ends within 10 -8 seconds. Instead of fluorescent inks and phosphorescent or photochromic inks are used. The luminous effect lasts for phosphorescent materials after the end of the irradiation, depending on the material from 10 -8 seconds to several seconds or hours. Photochromic ink changes color upon excitation with UV light. If the UV light source is removed, the color change takes for some time before the color returns to its original state. A special case of a photochromic printing ink is the iridescent photochromic printing ink. Iridescent or pearlescent colors contain transparent pigments consisting of tiny foil-covered tiny mica flakes. They cause an interference of the incoming light. This results in shiny, pearl-like shimmering effects with a change in color at different viewing angles or lighting angles.
Aus der
Außerdem ist aus der nach Artikel 54(3) EPÜ zwischenveröffentlichten
Ausgehend von dem obigen Stand der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, ein Sicherheitselement der eingangs genannten Art bereitzustellen, das ein erhöhtes Maß an Fälschungssicherheit bietet und zugleich auf einfache Art und Weise auf seine Echtheit hin überprüft werden kann. Darüber hinaus soll ein Datenträger mit einem solchen Sicherheitselement und ein Verfahren zum Herstellen eines solchen Sicherheitselements bereitgestellt werden.Based on the above prior art, the present invention has the object, a security element of the aforementioned To provide a type that offers an increased level of security against counterfeiting and at the same time can be easily checked for authenticity. In addition, a data carrier with such a security element and a method for producing such a security element should be provided.
Diese Aufgabe wird durch das im Hauptanspruch definierte Sicherheitselement gelöst. Ein Verfahren zum Herstellen desselben, ein Datenträger mit einem solchen Sicherheitselement und ein Verfahren zum Überprüfen der Echtheit des Datenträgers sind in den nebengeordneten Ansprüchen definiert. Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by the security element defined in the main claim. A method for producing the same, a data carrier with such a security element and a method for checking the authenticity of the data carrier are defined in the independent claims. Further developments of the invention are the subject of the dependent claims.
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1. (Erster Aspekt) Sicherheitselement für einen Datenträger, insbesondere ein Wertdokument, umfassend ein Trägersubstrat, dessen Vorderseite ein aus einer Vielzahl von mikroskopischen Einzelelementen zusammengesetztes makroskopisches Motiv aufweist, wobei:
- die mikroskopischen Einzelelemente jeweils zumindest drei, insbesondere vier, benachbarte, drucktechnisch erzeugte Bereiche enthalten, die so beschaffen sind, dass der Betrachter unter ersten Betrachtungsbedingungen innerhalb jedes Einzelelements einen sogenannten ersten Hell-Mittel-Dunkel-Kontrast wahrnimmt, unter zweiten Betrachtungsbedingungen innerhalb jedes Einzelelements eine im Wesentlichen einheitliche Helligkeit wahrnimmt und unter dritten Betrachtungsbedingungen innerhalb jedes Einzelelements einen sogenannten zweiten Hell-Mittel-Dunkel-Kontrast wahrnimmt, der verglichen mit dem ersten Hell-Mittel-Dunkel-Kontrast invertiert ist; und
- die mikroskopischen Einzelelemente beim Betrachter bei oszillierendem Wechsel zwischen den ersten und den dritten Betrachtungsbedingungen einen dynamischen Eindruck vom makroskopischen Motiv hervorrufen und die ersten, zweiten und dritten Betrachtungsbedingungen wie folgt definiert sind:
- erste Betrachtungsbedingungen: Betrachtung bei Beleuchtung mit sichtbarem Licht;
- zweite Betrachtungsbedingungen: Betrachtung bei Beleuchtung mit einer Kombination von sichtbarem Licht und ultraviolettem Licht zu im Wesentlichen gleichen Teilen;
- dritte Betrachtungsbedingungen: Betrachtung bei Beleuchtung mit ultraviolettem Licht.
- the microscopic individual elements each contain at least three, in particular four, adjacent areas produced by printing technology, which are designed so that the observer perceives a so-called first light-middle-dark contrast within each individual element under first viewing conditions, under second viewing conditions within each individual element perceives substantially uniform brightness and perceives, under third viewing conditions, within each individual element a so-called second bright-mid-dark contrast which is inverted compared with the first bright-mid-dark contrast; and
- the microscopic individual elements in the observer cause a dynamic impression of the macroscopic motif with an oscillating change between the first and the third viewing conditions, and the first, second and third viewing conditions are defined as follows:
- first viewing conditions: viewing under illumination with visible light;
- second viewing conditions: viewing under illumination with a combination of visible light and ultraviolet light at substantially equal parts;
- Third viewing conditions: viewing under illumination with ultraviolet light.
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2. (bevorzugt) Sicherheitselement nach Absatz 1, wobei die das makroskopische Motiv zusammensetzenden mikroskopischen Einzelelemente in Form einer flächigen Kaskade angeordnet sind und unter dem Begriff Kaskade eine Anordnung hintereinander geschalteter Einzelelemente zu verstehen ist.2. (preferred) security element according to
paragraph 1, wherein the macroscopic motif composing microscopic individual elements are arranged in the form of a flat cascade and the term cascade is an arrangement of successively connected individual elements to understand. -
3. (bevorzugt) Sicherheitselement nach Absatz 2, wobei die mikroskopischen Einzelelemente innerhalb der flächigen Kaskade linienförmig, geradlinig, kreisförmig oder wellenförmig hintereinander geschaltet angeordnet sind.3. (preferred) security element according to
paragraph 2, wherein the microscopic individual elements within the planar cascade linear, rectilinear, circular or wavy are arranged one behind the other. -
4. (bevorzugt) Sicherheitselement nach einem der Absätze 2 oder 3, wobei die flächige Kaskade mehrere Anordnungen von mikroskopischen Einzelelementen umfasst, in denen die mikroskopischen Einzelelemente jeweils linienförmig, geradlinig, kreisförmig oder wellenförmig hintereinander geschaltet angeordnet sind und die Anordnungen der mikroskopischen Einzelelemente so ausgestaltet sind, dass die Abmessungen der mikroskopischen Einzelelemente innerhalb einer Anordnung einheitlich sind, aber von Anordnung zu Anordnung variieren und insbesondere kontinuierlich in einer Richtung zu- und/oder abnehmen.4. (preferred) security element according to one of
2 or 3, wherein the planar cascade comprises a plurality of arrangements of microscopic individual elements in which the microscopic individual elements each linear, rectilinear, circular or wavy are arranged one behind the other and configured the arrangements of the microscopic individual elements are that the dimensions of the microscopic individual elements are uniform within an array, but of Arrangement vary to arrangement and in particular continuously increase in one direction and / or decrease.paragraphs -
5. (bevorzugt) Sicherheitselement nach einem der Absätze 1 bis 4, wobei die mikroskopischen Einzelelemente eine Größe von mindestens 0,1 mm x 0,2 mm und höchstens 5 mm x 10 mm, bevorzugt eine Größe von mindestens 1 mm x 2 mm und höchstens 3 mm x 5 mm, besitzen5. (preferred) security element according to one of
paragraphs 1 to 4, wherein the microscopic individual elements have a size of at least 0.1 mm x 0.2 mm and at most 5 mm x 10 mm, preferably a size of at least 1 mm x 2 mm and not more than 3 mm x 5 mm -
6. (bevorzugt) Sicherheitselement nach einem der Absätze 1 bis 5, wobei die Einzelelemente in Form von ebenen Figuren, insbesondere Vielecken, Kreisen, Kreis-ähnlichen Figuren oder Kreis-Teilen, gebildet sind.6. (preferred) security element according to one of the
paragraphs 1 to 5, wherein the individual elements in the form of planar figures, in particular polygons, circles, circle-like figures or circular parts, are formed. -
7. (bevorzugt) Sicherheitselement nach einem der Absätze 1 bis 6, wobei die mikroskopischen Einzelelemente jeweils drei benachbarte, drucktechnisch erzeugte Bereiche enthalten, von denen genau ein Bereich ein lumineszierendes Material aufweist, das bei Beleuchtung mit sichtbarem Licht unsichtbar ist und bei Beleuchtung mit ultraviolettem Licht eine helle sichtbare Farbe zeigt. Das lumineszierende Material kann z.B. in eine Tageslichtfarbe eingemischt sein. Gemäß einer Alternative können das lumineszierende Material und eine Tageslichtfarbe gerastert nebeneinander gedruckt vorliegen, sodass das lumineszierende Material nicht in der Tageslichtfarbe eingemischt ist. Gemäß einer weiteren Alternative ist die Tageslichtfarbe in einer Druckschicht vorhanden, oberhalb der eine weitere, das lumineszierende Material aufweisende Druckschicht aufgebracht ist.7. (preferred) security element according to any one of
paragraphs 1 to 6, wherein the microscopic individual elements each contain three adjacent areas produced by printing technology, of which exactly one area has a luminescent material that is invisible when illuminated with visible light and when illuminated with ultraviolet Light shows a bright visible color. The luminescent material may e.g. be mixed in a daylight color. In one alternative, the luminescent material and a daylight color may be screen printed next to each other so that the luminescent material is not mixed in the daylight color. According to a further alternative, the daylight color is present in a printing layer, above which a further printing layer comprising the luminescent material is applied. -
8. (bevorzugt) Sicherheitselement nach einem der Absätze 1 bis 6, wobei die mikroskopischen Einzelelemente jeweils vier benachbarte, drucktechnisch erzeugte Bereiche enthalten, von denen genau zwei Bereiche ein lumineszierendes Material aufweisen, das bei Beleuchtung mit sichtbarem Licht unsichtbar ist und bei Beleuchtung mit ultraviolettem Licht eine helle sichtbare Farbe zeigt. Das lumineszierende Material kann z.B. in eine Tageslichtfarbe eingemischt sein. Gemäß einer Alternative können das lumineszierende Material und eine Tageslichtfarbe gerastert nebeneinander gedruckt vorliegen, sodass das lumineszierende Material nicht in der Tageslichtfarbe eingemischt ist. Gemäß einer weiteren Alternative ist die Tageslichtfarbe in einer Druckschicht vorhanden, oberhalb der eine weitere, das lumineszierende Material aufweisende Druckschicht aufgebracht ist.8. (preferred) security element according to any one of
paragraphs 1 to 6, wherein the microscopic individual elements each contain four adjacent areas produced by printing technology, of which exactly two areas have a luminescent material, which is invisible when illuminated with visible light is and shows a bright visible color when illuminated with ultraviolet light. The luminescent material may for example be mixed in a daylight color. In one alternative, the luminescent material and a daylight color may be screen printed next to each other so that the luminescent material is not mixed in the daylight color. According to a further alternative, the daylight color is present in a printing layer, above which a further printing layer comprising the luminescent material is applied. -
9. (bevorzugt) Sicherheitselement nach einem der Absätze 1 bis 7, wobei die mikroskopischen Einzelelemente jeweils drei benachbarte, drucktechnisch erzeugte Bereiche enthalten, von denen:
- ein erster Bereich eine erste Farbschicht in einer dunklen sichtbaren Farbe und eine oberhalb der ersten Farbschicht gebildete zweite Farbschicht aufweist und die zweite Farbschicht ein unter UV-Bestrahlung lumineszierendes Material enthält, das bei Beleuchtung mit sichtbarem Licht unsichtbar ist und bei Beleuchtung mit ultraviolettem Licht eine helle sichtbare Farbe zeigt;
- ein zweiter Bereich eine Farbschicht in einer mittleren bzw. mitteldunklen sichtbaren Farbe aufweist; und
- ein dritter Bereich eine Farbschicht in einer hellen sichtbaren Farbe aufweist.
paragraphs 1 to 7, wherein the microscopic individual elements each contain three adjacent areas produced by printing technology, of which:- a first region having a first color layer in a dark visible color and a second color layer formed above the first color layer and the second color layer containing a luminescent material under UV irradiation which is invisible when illuminated with visible light and a bright one upon illumination with ultraviolet light shows visible color;
- a second region has a color layer in a medium or medium dark visible color; and
- a third region has a color layer in a bright visible color.
-
10. (bevorzugt) Sicherheitselement nach einem der Absätze 1 bis 7, wobei die mikroskopischen Einzelelemente jeweils drei benachbarte, drucktechnisch erzeugte Bereiche enthalten, von denen:
- ein erster Bereich eine Farbschicht aufweist und die Farbschicht ein Material in einer dunklen sichtbaren Farbe und ein weiteres, unter UV-Bestrahlung lumineszierendes Material, das bei Beleuchtung mit sichtbarem Licht unsichtbar ist und bei Beleuchtung mit ultraviolettem Licht eine helle sichtbare Farbe zeigt, enthält;
- ein zweiter Bereich eine Farbschicht in einer mittleren bzw. mitteldunklen sichtbaren Farbe aufweist; und
- ein dritter Bereich eine Farbschicht in einer hellen sichtbaren Farbe aufweist.
paragraphs 1 to 7, wherein the microscopic individual elements each contain three adjacent areas produced by printing technology, of which:- a first region comprises a color layer, and the color layer comprises a material in one dark visible color and another, under UV irradiation luminescent material, which when illuminated with visible Light is invisible and shows a bright visible color when illuminated with ultraviolet light;
- a second region has a color layer in a medium or medium dark visible color; and
- a third region has a color layer in a bright visible color.
-
11. (bevorzugt) Sicherheitselement nach einem der Absätze 1 bis 6 oder Absatz 8, wobei die mikroskopischen Einzelelemente jeweils vier benachbarte, drucktechnisch erzeugte Bereiche enthalten, von denen:
- ein erster Bereich eine erste Farbschicht in einer sehr dunklen sichtbaren Farbe und eine oberhalb der ersten Farbschicht gebildete zweite Farbschicht aufweist und die zweite Farbschicht ein unter UV-Bestrahlung lumineszierendes Material enthält, das bei Beleuchtung mit sichtbarem Licht unsichtbar ist und bei Beleuchtung mit ultraviolettem Licht eine helle sichtbare Farbe zeigt;
- ein zweiter Bereich eine erste Farbschicht in einer dunklen sichtbaren Farbe und eine oberhalb der ersten Farbschicht gebildete zweite Farbschicht aufweist und die zweite Farbschicht ein unter UV-Bestrahlung lumineszierendes Material enthält, das bei Beleuchtung mit sichtbarem Licht unsichtbar ist und bei Beleuchtung mit ultraviolettem Licht eine helle sichtbare Farbe zeigt;
- ein dritter Bereich eine Farbschicht in einer mittleren bzw. mitteldunklen sichtbaren Farbe aufweist; und
- ein vierter Bereich eine Farbschicht in einer hellen sichtbaren Farbe aufweist.
paragraphs 1 to 6 orparagraph 8, wherein the microscopic individual elements each contain four adjacent areas produced by printing technology, of which:- a first region having a first color layer in a very dark visible color and a second color layer formed above the first color layer and the second color layer containing a UV-luminescent material which is invisible when illuminated by visible light and when illuminated with ultraviolet light bright visible color shows;
- a second region comprises a first color layer in a dark visible color and a second color layer formed above the first color layer and the second color layer contains a luminescent material under UV irradiation that is invisible when illuminated with visible light and a bright one upon illumination with ultraviolet light shows visible color;
- a third region has a color layer in a medium or medium dark visible color; and
- a fourth area has a color layer in a bright visible color.
-
12. (bevorzugt) Sicherheitselement nach einem der Absätze 1 bis 6 oder Absatz 8, wobei die mikroskopischen Einzelelemente jeweils vier benachbarte, drucktechnisch erzeugte Bereiche enthalten, von denen:
- ein erster Bereich eine Farbschicht aufweist und die Farbschicht ein Material in einer sehr dunklen sichtbaren Farbe und ein weiteres, unter UV-Bestrahlung lumineszierendes Material, das bei Beleuchtung mit sichtbarem Licht unsichtbar ist und bei Beleuchtung mit ultraviolettem Licht eine helle sichtbare Farbe zeigt, enthält;
- ein zweiter Bereich eine Farbschicht aufweist und die Farbschicht ein Material in einer dunklen sichtbaren Farbe und ein weiteres, unter UV-Bestrahlung lumineszierendes Material, das bei Beleuchtung mit sichtbarem Licht unsichtbar ist und bei Beleuchtung mit ultraviolettem Licht eine helle sichtbare Farbe zeigt, enthält;
- ein dritter Bereich eine Farbschicht in einer mittleren bzw. mitteldunklen sichtbaren Farbe aufweist; und
- ein vierter Bereich eine Farbschicht in einer hellen sichtbaren Farbe aufweist.
paragraphs 1 to 6 orparagraph 8, the microscopic individual elements each containing four adjacent areas produced by printing technology, of which:- a first region having a color layer and the color layer containing one material in a very dark visible color and another UV-luminescent material which is invisible when illuminated with visible light and exhibits a bright visible color when illuminated with ultraviolet light;
- a second region having a color layer and the color layer containing one material in one dark visible color and another UV-luminescent material which is invisible when illuminated with visible light and exhibits a bright visible color when illuminated with ultraviolet light;
- a third region has a color layer in a medium or medium dark visible color; and
- a fourth area has a color layer in a bright visible color.
-
13. (bevorzugt) Sicherheitselement nach einem der Absätze 7 bis 12, wobei das lumineszierende Material ein fluoreszierendes Material, insbesondere eine fluoreszierende Tinte oder ein fluoreszierendes Pigment, ist.13. (preferred) A security element according to any one of
paragraphs 7 to 12, wherein the luminescent material is a fluorescent material, in particular a fluorescent ink or a fluorescent pigment. -
14. (Zweiter Aspekt) Datenträger, umfassend ein Sicherheitselement nach einem der Absätze 1 bis 13.14. (Second aspect) data carrier, comprising a security element according to any one of
paragraphs 1 to 13. -
15. (bevorzugt) Datenträger nach Absatz 14, wobei der Datenträger ein Wertdokument, insbesondere eine Banknote, ein Ausweisdokument oder ein Etikett ist.15. (preferred) data carrier according to
paragraph 14, wherein the data carrier is a value document, in particular a banknote, an identity document or a label. -
16. (Dritter Aspekt) Verfahren zum Herstellen eines Sicherheitselements gemäß einem der Absätze 1 bis 13, umfassend den Schritt des Bereitstellens eines Trägersubstrats und den Schritt des drucktechnischen Erzeugens von mikroskopischen Einzelelementen auf der Vorderseite des Trägersubstrats, insbesondere mittels Offset-, Flexo-, Sieb-, Tief-, Stichtief-, oder Inkjetdruck.16. (Third aspect) A method of producing a security element according to any one of
paragraphs 1 to 13, comprising the step of providing a carrier substrate and the step of producing microscopic individual elements on the front side of the carrier substrate, in particular by means of offset, flexo, sieve , Gravure, intaglio, or inkjet printing. -
17. (Vierter Aspekt) Verfahren zum Überprüfen der Echtheit eines Datenträgers, insbesondere eines Wertdokuments, nach Absatz 14 oder 15, umfassend den Schritt des visuellen Erfassens des im Absatz 1 definierten dynamischen Eindrucks vom makroskopischen Motiv durch Betrachten des Datenträgers bei Tageslicht unter Zuhilfenahme einer UV-Lichtquelle, insbesondere einer UV-Handlampe, wobei der Abstand zwischen Datenträger und UV-Lichtquelle in sich wiederholender Abfolge verkürzt und wieder verlängert wird.17. (Fourth aspect) A method for verifying the authenticity of a data carrier, in particular a value document, according to
14 or 15, comprising the step of visually detecting the dynamic impression of the macroscopic motif defined inparagraph paragraph 1 by viewing the data carrier in daylight with the aid of a UV Light source, in particular a UV hand lamp, wherein the distance between the data carrier and UV light source is shortened in repetitive sequence and extended again.
Der hierin verwendete Begriff "ultraviolettes Licht" bezeichnet insbesondere Licht mit einer Wellenlänge in einem Bereich von 235 bis 380 nm.The term "ultraviolet light" as used herein refers particularly to light having a wavelength in a range of 235 to 380 nm.
Anstelle des Begriffes "sichtbares Licht" wird nachfolgend auch der Begriff "Tageslicht" verwendet.Instead of the term "visible light", the term "daylight" is used below.
Unter dem Begriff "Tageslichtfarbe" ist eine auf Licht in einem Wellenlängenbereich von 380 nm bis 750 nm beruhende Farbe zu verstehen. Nachfolgend werden auch die Synonyme Köperfarbe und Buntfarbe verwendet.The term "daylight color" is understood to mean a color based on light in a wavelength range from 380 nm to 750 nm. The synonyms body color and color are also used below.
Unter dem Begriff "Motiv" ist insbesondere ein Muster oder ein Bild zu verstehen. Das Motiv kann dem Betrachter darüber hinaus eine Information vermitteln, indem es z.B. ein Zeichen, eine Zeichenfolge oder eine Bildinformation aufweist.The term "motif" is to be understood in particular as a pattern or a picture. The subject can also provide the viewer with information convey, for example, by having a character, a string or an image information.
Der Begriff "ebene Figur" ist im Stand der Technik bekannt (siehe "
Der hierin verwendete Begriff "Vieleck" bezeichnet insbesondere ein n-Eck mit n≥3.The term "polygon" as used herein refers in particular to an n-corner with n≥3.
Der hierin verwendete Begriff "mikroskopisch" ist nicht im Sinne von "Abmessung im Mikrometerbereich" oder dergleichen zu verstehen, sondern lediglich relativ zu verstehen. Die mikroskopischen Einzelelemente (die nachstehend auch einfach als "Mikroelemente" bezeichnet werden) sind jeweils für den Betrachter mit dem bloßen Auge, d.h. ohne Verwendung von optischen Hilfsmitteln, wahrnehmbar und ergeben zusammengesetzt ein Gesamtbild, d.h. ein makroskopisches Motiv.As used herein, the term "microscopic" is not to be understood as meaning "micrometer-sized" or the like, but is merely to be understood as relative. The microscopic individual elements (which are also referred to below simply as "microelements") are in each case perceptible to the viewer with the naked eye, ie without the use of optical aids, and are composed in an overall image, ie a macroscopic motif.
Die Erfindung beruht auf dem Gedanken, durch das Zusammenwirken von Leuchtfarben bzw. lumineszierenden Farben, insbesondere Fluoreszenzfarben, und Körperfarben bzw. Buntfarben mittels eines geeigneten Designs einen dynamischen Effekt bei einem Mikro-/Makrobild zu erzielen. Der dynamische Effekt basiert auf einer Hell-Dunkel-Wechselwirkung einer im makroskopischen Motiv enthaltenen, sich wiederholenden Mikroelementstruktur und kann insbesondere beim oszillierenden Durchlaufen (d.h. durch ein periodisches "Hin-und-Zurück") des Übergangs von (1) der Beleuchtung des Sicherheitselements mit sichtbarem Licht über (2) eine UV-Licht/Tageslicht-Beleuchtungssituation im ungefähren Verhältnis 1:1 zu (3) einer im Wesentlichen reinen UV-Beleuchtungssituation beobachtet werden. Das auf diese Weise hervorgerufene Lichtspiel der mikroskopischen Einzelelemente bewirkt eine Dynamik beim makroskopischen Motiv. Entscheidend für den dynamischen Effekt ist die periodische Veränderung des Abstandes zwischen der UV-Lichtquelle und dem Sicherheitselement. Das prozentuale Verhältnis Tageslicht/ UV-Licht wechselt dabei insbesondere in einem Bereich von 70/30 zu 30/70. Da das menschliche Auge die helleren Bildbestandteile eines Motivs als vordergründig bzw. dominant ansieht, ist der dynamische Bewegungseffekt beim Helligkeitswechsel von nahe beieinander liegenden Motivelementen, z.B. Linien, Punkten oder Kreisen, besonders eindrucksvoll. Der Helligkeitswechsel wird durch die Veränderung des Abstandes zwischen der UV-Lichtquelle und dem Sicherheitselement erzeugt, wobei sich die Beleuchtungsstärke z.B. einer fluoreszierenden Farbe quadratisch im Zuge der Verkürzung des Abstandes vergrößert. Auf diese Weise wird bei einem größeren Abstand die hellere Tageslichtfarbe dominant, bei einem geringeren Abstand die fluoreszierende Farbe, die ansonsten bei Tageslicht dunkler erscheint.The invention is based on the idea of achieving a dynamic effect in a micro / macro image by the interaction of luminous colors or luminescent inks, in particular fluorescent inks, and body colors or colored inks by means of a suitable design. The dynamic effect is based on a light-dark interaction of a repeating microelement structure contained in the macroscopic motif and can, in particular, during oscillating (ie by a periodic "back and forth") of the transition of (1) the illumination of the security element with (2) a UV light / daylight lighting situation in approximately the 1: 1 ratio to (3) a substantially pure UV lighting situation can be observed. The thus created play of light of the microscopic individual elements causes a dynamic in the macroscopic motif. Decisive for the dynamic effect is the periodic change of the distance between the UV light source and the security element. The percentage ratio of daylight / UV light changes in particular in a range of 70/30 to 30/70. Since the human eye regards the brighter image components of a motif as superficial or dominant, the dynamic motion effect when changing the brightness of motif elements located close to one another, eg lines, points or circles, is particularly impressive. The change in brightness is produced by the change in the distance between the UV light source and the security element, whereby the illuminance of, for example, a fluorescent color increases quadratically in the course of the shortening of the distance. In this way, at a greater distance the brighter daylight color becomes dominant, at a smaller distance the fluorescent color, which otherwise appears darker in daylight.
Der dynamische Bewegungseffekt entfaltet sich je nach Wahl und Anordnung der Mikroelemente z.B. in Form eines durch optische Täuschung hervorgerufenen Dreh- bzw. Rotationseffekts (d.h. die Bewegung eines sich drehenden Rads) oder in Form einer ansonsten bei Hologrammen bekannten "Pumpwirkung" (d.h. die sich periodisch verändernde dreidimensionale Erscheinung eines Motivs) oder dergleichen. Ein Dreh- bzw. Rotationseffekt lässt sich z.B. dadurch bewerkstelligen, dass die Mikroelemente so zusammengefügt werden, dass sie zusammen ein Muster mit Rotationssymmetrie, insbesondere ein Muster mit Rotationssymmetrie und Spiegelsymmetrie, ergeben. Das Zusammenfügen der Mikroelemente kann dabei lückenlos oder mit Beabstandung erfolgen. Beispielsweise können Weißbereiche bzw. unbedruckte Bereiche zwischen den einzelnen Mikroelementen vorhanden sein.The dynamic motion effect unfolds depending on the choice and arrangement of the microelements e.g. in the form of an optical illusion-induced rotational effect (i.e., the motion of a rotating wheel) or in the form of a "pumping action" otherwise known in holograms (i.e., the periodically changing three-dimensional appearance of a subject) or the like. A rotational effect can be e.g. by bringing together the microelements so that together they form a pattern with rotational symmetry, in particular a pattern with rotational symmetry and mirror symmetry. The joining of the microelements can take place without gaps or with spacing. For example, white areas or unprinted areas may be present between the individual microelements.
Zur Ausführung der Erfindung eignen sich insbesondere Fluoreszenz-Pigmente und Fluoreszenzfarbstoffe (insbesondere organische Farbmittel), deren optische Wirkung auf ihrer Fähigkeit beruht, UV-Strahlung zu absorbieren und in Form von sichtbarem Licht ohne zeitliche Verzögerung, d.h. mit flüchtigem, innerhalb von 10-8 Sekunden endenden Lichtaustritt, auszusenden. Phosphoreszierende Materialien werden weniger bevorzugt, können aber unter der Voraussetzung herangezogen werden, dass die Dauer des Nachleuchtvorganges die Erkennbarkeit des dynamischen Bewegungseffekts nicht beeinträchtigt.Particularly suitable for carrying out the invention are fluorescent pigments and fluorescent dyes (in particular organic colorants), the optical effect of which is based on their ability to absorb UV radiation and in the form of visible light without delay, ie with volatility, within 10 -8 Seconds ending light emission, to send out. Phosphorescent materials are less preferred, but can be used provided that the duration of the afterglow does not affect the detectability of the dynamic motion effect.
Das erfindungsgemäße Sicherheitselement kann insbesondere bei zwei oder mehr Wellenlängen anregbar sein und dann unterschiedliche Fluoreszenzfarbtöne in Abhängigkeit von der Wellenlänge zeigen.The security element according to the invention can be excitable in particular at two or more wavelengths and then show different fluorescent shades as a function of the wavelength.
Die Erfindung wird anhand der nachfolgenden Ausführungsvarianten bzw. Beispiele in Verbindung mit den ergänzenden Figuren näher erläutert. Die Beispiele stellen bevorzugte Ausführungsformen dar, auf die jedoch die Erfindung in keinerlei Weise beschränkt sein soll. Des Weiteren sind die Darstellungen in den Figuren des besseren Verständnisses wegen stark schematisiert und spiegeln nicht die realen Gegebenheiten wider. Insbesondere entsprechen die in den Figuren gezeigten Proportionen nicht den in der Realität vorliegenden Verhältnissen und dienen ausschließlich der Verbesserung der Anschaulichkeit.The invention will be explained in more detail with reference to the following embodiment variants or examples in conjunction with the additional figures. The Examples are preferred embodiments, to which, however, the invention should in no way be limited. Furthermore, the representations in the figures of better understanding are highly schematized and do not reflect the realities. In particular, the proportions shown in the figures do not correspond to the conditions present in reality and serve exclusively to improve the clarity.
Im Einzelnen zeigen die Figuren:
Figuren 1 bis 15:- die Ausführungsvariante eines Sicherheitselements, das nicht unter den Umfang der vorliegenden Ansprüche fällt; diese Ausführungsvariante wird lediglich des besseren Verständnisses der vorliegenden Erfindung erwähnt;
- Figur 16:
- eine Ausführungsvariante eines Sicherheitselements gemäß der vorliegenden Erfindung;
Figuren 17 bis 20:- vier Beispiele zur Erzeugung von mikroskopischen Einzelelementen, aus denen das makroskopische Motiv gemäß
Fig. 16 zusammengesetzt sein kann.
- FIGS. 1 to 15:
- the embodiment of a security element that does not fall under the scope of the present claims; this embodiment is only mentioned for a better understanding of the present invention;
- FIG. 16:
- an embodiment of a security element according to the present invention;
- FIGS. 17 to 20:
- four examples for the production of microscopic single elements, from which the macroscopic motif according to
Fig. 16 can be composed.
Der vorliegenden Erfindung zugrunde liegt das Prinzip eines dynamischen Farbwechselspiels, das durch das Kombinieren einer Tageslichtfarbe mit einer lumineszierenden Farbe erhalten wird. Diese Grundlagen werden anhand der
- Farbschicht 1: dunkelblaue Tageslichtfarbe
- Farbschicht 2: hellgrüne Tageslichtfarbe
- Farbschicht 3: gelbe Fluoreszenzfarbe
- Color coat 1: dark blue daylight color
- Color layer 2: light green daylight color
- Color layer 3: yellow fluorescent color
Die gelbe Fluoreszenzfarbe der Farbschicht 3 ist bei Betrachtung allein im Tageslicht unsichtbar und erscheint bei Betrachtung im UV-Licht gelb.The yellow fluorescent color of the
Das Zustandekommen der in den
Das dynamische Lichtwechselspiel im Zuge der periodischen Bewegung der UV-Lichtquelle wird anhand der
Bei flächiger, mehrfacher Anordnung der Einzelelemente wird durch eine Helligkeits-Verschiebung (d.h. eine Inversion bzw. Umkehr des Kontrasts) der Eindruck einer Bewegung erzeugt. Je nach Anordnung der Einzelelemente innerhalb des makroskopischen Motivs und der Beschaffenheit der Einzelelemente kann die Richtung der Bewegung variiert werden.In planar, multiple arrangement of the individual elements is by a brightness shift (ie, an inversion or reversal of the contrast) creates the impression of a movement. Depending on the arrangement of the individual elements within the macroscopic motif and the nature of the individual elements, the direction of movement can be varied.
Durch die unterschiedlichen Helligkeitsstufen der Bereiche 17,18 und 19 innerhalb eines Einzelelements 16 wird im makroskopischen Motiv 15 ein fließender Bewegungseffekt in eine bestimmte Richtung erhalten.Due to the different brightness levels of the
In der
Die Qualität des Bewegungseffektes ist u.a. abhängig von
- der Größe eines Kaskaden-
Elements 16, - der Lichtstärke der UV-Lampe und der damit verbundenen Leuchtstärke der Fluoreszenz,
- dem Kontrast der Einzelelemente 16 verglichen mit dem gedruckten Umfeld,
- dem Helligkeitsunterschied von UV-Lampenlicht zu Tageslicht und
- von der Frequenz, mit der die UV-Lampe über dem gedruckten Element auf und ab, bzw. hin und her bewegt wird.
- the size of a
cascade element 16, - the intensity of the UV lamp and the associated luminous intensity of the fluorescence,
- the contrast of the
individual elements 16 compared to the printed environment, - the brightness difference from UV lamp light to daylight and
- the frequency at which the UV lamp moves up and down over the printed element.
Da je nach Anordnung der Elemente 16 der Bewegungseffekt in unterschiedliche Richtungen erfolgen kann ist es denkbar, innerhalb eines makroskopischen Motivs Bewegungseffekte in unterschiedliche Richtungen zu erzeugen (z.B. der in der
Das in der
Das in der
Beim Wechsel von Tageslicht zu UV-Licht findet einerseits eine kontinuierliche Aufhellung des mit Fluoreszenzfarbe 20 überdruckten, dunkleren Bereichs A, andererseits eine Abdunkelung der helleren Bereiche B und C durch Verschattung mittels des UV-Lampengehäuses oder der UV-Lampe (inklusive der Hand bei UV-Handlampen) statt.When changing from daylight to UV light, on the one hand there is a continuous brightening of the darker area A overprinted with
Die in den
- d: dunkel;
- d-m: dunkel bis mittel;
- m: mittel;
- m-h: mittel bis hell;
- h: hell.
- d: dark;
- dm: dark to medium;
- m: medium;
- mh: medium to light;
- h: bright.
Bei Tageslicht ist die Fläche C die hellste, A die dunkelste. In der Halb/ Halb-Situation wird die dunkelste Fläche etwas heller, die hellste etwas dunkler. Die gesamte Fläche erscheint quasi in einem mehr oder weniger einheitlichen Grau. Unter UV-Licht ist die Fläche A die hellste, die Fläche B die dunkelste. Diese Helligkeitsverschiebung von C nach A erweckt beim Betrachter den Eindruck, als bewege sich die Fläche entsprechend von rechts nach links.In daylight the area C is the brightest, A the darkest. In the half / half situation, the darkest area becomes a little brighter, the brightest a little bit darker. The entire surface appears in a more or less uniform gray. Under UV light, the surface A is the brightest, the surface B the darkest. This shift in brightness from C to A gives the viewer the impression that the surface is moving from right to left.
In diesem Beispiel wird das in der
Das in der
Beim Wechsel von Tageslicht zu UV-Licht findet einerseits eine kontinuierliche Aufhellung der mit Fluoreszenzfarbe 21 überdruckten, dunkleren Bereiche A und B, andererseits eine Abdunkelung der helleren Bereiche C und D durch Verschattung mittels des UV-Lampengehäuses oder der UV-Lampe (inklusive der Hand bei UV-Handlampen) statt.When changing from daylight to UV light on the one hand finds a continuous brightening of the overprinted with
Bei Tageslicht ist Fläche D die hellste, Fläche C die zweithellste, Fläche B die dunkelste und Fläche A die zweitdunkelste. Durch die Aufhellung der beiden dunklen Bereiche A und B unter der UV-Lampe bei gleichzeitiger Abdunkelung der hellen Bereiche C und D erscheint in der Halb/ Halb-Situation die gesamte Fläche in einem mehr oder weniger einheitlichen Grau.In daylight, surface D is the brightest, surface C the second brightest, surface B the darkest and surface A the second darkest. Due to the lightening of the two dark areas A and B under the UV lamp with simultaneous darkening of the light areas C and D, the entire area appears in a more or less uniform gray in the half / half situation.
Unter UV-Licht wird dieser Effekt weiter verstärkt, sodass Position A als hellste, Position B als zweithellste Fläche erscheint. Diese Helligkeitsverschiebung von D nach A erweckt beim Betrachter den Eindruck, als bewege sich die Fläche entsprechend von rechts nach links.Under UV light, this effect is further enhanced, so that position A appears as the brightest, position B as the second brightest surface. This shift in brightness from D to A gives the viewer the impression that the surface is moving from right to left.
Gemäß einer Variante zu dem im Ausführungsbeispiel 2 beschriebenen Fall sind weitere Anordnungen der Graustufenfelder innerhalb eines in der
Allgemein kann die Realisierung eines Einzelelements über jede Form von Rasterung einer einzigen Farbe oder als Mehrfarbendruck unterschiedlicher Graustufen oder Farbtöne unterschiedlicher Helligkeit oder auch mittels Teil-Übereinanderdruck zweier Farbtöne durchgeführt werden.In general, the realization of a single element can be carried out over any form of screening of a single color or as multicolor printing of different shades of gray or hues of different brightness or also by partial overprinting of two hues.
Wird das Motiv gerastert gedruckt, verändert sich das Deckungsverhältnis entsprechend, da in diesem Fall keine 100 % Flächendeckung vorliegen kann. In diesem Fall wird maximal eine Flächendeckung von 70 bis 80 % erreicht.If the motif is printed rastered, the coverage ratio changes accordingly, since in this case there can be no 100% area coverage. In this case a maximum coverage of 70 to 80% is achieved.
Die Herstellung ist grundsätzlich verfahrensunabhängig, d.h. es kann z.B. mittels Offsetdruck, Stichtiefdruck, Sieb- oder Flexodruck vorgegangen werden. Genauso können die Druckverfahren miteinander kombiniert werden, z.B. Tageslichtfarbe im Offset-, Stichtief- oder Siebdruck und Fluoreszenzfarbe im Ink-Jet-, Sieb- oder Flexodruck.The production is basically process-independent, ie it can be done for example by means of offset printing, intaglio printing, screen or flexographic printing. In the same way, the printing processes can be combined with one another, eg daylight color in offset, intaglio or screen printing and fluorescent ink in inkjet, screen or flexo printing.
In diesem Beispiel wird das in der
Claims (17)
- A security element for a data carrier, in particular a value document, comprising a carrier substrate whose front side has a macroscopic motif composed of a multiplicity of microscopic single elements, wherein :the microscopic single elements respectively contain at least three, in particular four, neighboring regions produced by printing technology which are so constituted that the viewer perceives a so-called first light/medium/dark contrast within each single element under first viewing conditions, perceives a substantially uniform lightness within each single element under second viewing conditions, and perceives a so-called second light/medium/dark contrast which is inverted compared to the first light/medium/dark contrast within each single element under third viewing conditions; andthe microscopic single elements arouse in the viewer a dynamic impression of the macroscopic motif upon an oscillating change between the first and the third viewing conditions, and the first, second and third viewing conditions are defined as follows:first viewing conditions: viewing upon illumination with visible light;second viewing conditions: viewing upon illumination with a combination of visible light and ultraviolet light in substantially equal parts;third viewing conditions: viewing upon illumination with ultraviolet light.
- The security element according to claim 1, wherein the microscopic single elements composing the macroscopic motif are arranged in the form of a planar cascade, and the term cascade is understood to be an arrangement of successively placed single elements.
- The security element according to claim 2, wherein the microscopic single elements are arranged so as to be successively placed in a linear, straight, circular or wavy form within the planar cascade.
- The security element according to either of claims 2 to 3, wherein the planar cascade comprises a plurality of arrangements of microscopic single elements in which the microscopic single elements are respectively arranged so as to be successively placed in a linear, straight, circular or wavy form, and the arrangements of the microscopic single elements are so configured that the dimensions of the microscopic single elements are uniform within an arrangement but vary from arrangement to arrangement, in particular increasing and/or decreasing continuously in one direction.
- The security element according to any of claims 1 to 4, wherein the microscopic single elements possess a size of at least 0.1 mm x 0.2 mm and at most 5 mm x 10 mm, preferably a size of at least 1 mm x 2 mm and at most 3 mm x 5 mm.
- The security element according to any of claims 1 to 5, wherein the single elements are configured in the form of plane figures, in particular polygons, circles, cycloid figures or parts of a circle.
- The security element according to any of claims 1 to 6, wherein the microscopic single elements respectively contain three neighboring regions produced by printing technology, of which exactly one region has a luminescent material which is invisible upon illumination with visible light and shows a light visible color upon illumination with ultraviolet light.
- The security element according to any of claims 1 to 6, wherein the microscopic single elements respectively contain four neighboring regions produced by printing technology, of which exactly two regions have a luminescent material which is invisible upon illumination with visible light and shows a light visible color upon illumination with ultraviolet light.
- The security element according to any of claims 1 to 7, wherein the microscopic single elements respectively contain three neighboring regions produced by printing technology, of which:a first region has a first color layer in a dark visible color and a second color layer formed above the first color layer, and the second color layer contains a material luminescing under UV irradiation which is invisible upon illumination with visible light and shows a light visible color upon illumination with ultraviolet light;a second region has a color layer in a medium or medium-dark visible color; anda third region has a color layer in a light visible color.
- The security element according to any of claims 1 to 7, wherein the microscopic single elements respectively contain three neighboring regions produced by printing technology, of which:a first region has a color layer and the color layer contains a material in a dark visible color and a further material luminescing under UV irradiation which is invisible upon illumination with visible light and shows a light visible color upon illumination with ultraviolet light;a second region has a color layer in a medium or medium-dark visible color; anda third region has a color layer in a light visible color.
- The security element according to any of claims 1 to 6 or claim 8, wherein the microscopic single elements respectively contain four neighboring regions produced by printing technology, of which:a first region has a first color layer in a very dark visible color and a second color layer formed above the first color layer, and the second color layer contains a material luminescing under UV irradiation which is invisible upon illumination with visible light and shows a light visible color upon illumination with ultraviolet light;a second region has a first color layer in a dark visible color and a second color layer formed above the first color layer, and the second color layer contains a material luminescing under UV irradiation which is invisible upon illumination with visible light and shows a light visible color upon illumination with ultraviolet light;a third region has a color layer in a medium or medium-dark visible color; anda fourth region has a color layer in a light visible color.
- The security element according to any of claims 1 to 6 or claim 8, wherein the microscopic single elements respectively contain four neighboring regions produced by printing technology, of which:a first region has a color layer and the color layer contains a material in a very dark visible color and a further material luminescing under UV irradiation which is invisible upon illumination with visible light and shows a light visible color upon illumination with ultraviolet light;a second region has a color layer and the color layer contains a material in a dark visible color and a further material luminescing under UV irradiation which is invisible upon illumination with visible light and shows a light visible color upon illumination with ultraviolet light;a third region has a color layer in a medium or medium-dark visible color; anda fourth region has a color layer in a light visible color.
- The security element according to any of claims 7 to 12, wherein the luminescent material is a fluorescent material, in particular a fluorescent ink or a fluorescent pigment.
- A data carrier, comprising a security element according to any of claims 1 to 13.
- The data carrier according to claim 14, wherein the data carrier is a value document, in particular a bank note, an identity document or a label.
- A method for manufacturing a security element according to any of claims 1 to 13, comprising the step of supplying a carrier substrate and the step of producing microscopic single elements on the front side of the carrier substrate by printing technology, in particular by means of offset, flexographic, screen, gravure, intaglio or ink-jet printing.
- A method for checking the authenticity of a data carrier, in particular a value document, according to claim 14 or 15, comprising the step of visually detecting the dynamic impression, defined in claim 1, of the macroscopic motif by viewing the data carrier in daylight with the aid of a UV light source, in particular a UV hand lamp, with the distance between data carrier and UV light source being shortened and lengthened again in recurrent succession.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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PL14724313T PL2996881T3 (en) | 2013-05-16 | 2014-05-13 | Security element, production method, data carrier equipped with the security element and method for checking the authenticity |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102013008507.1A DE102013008507A1 (en) | 2013-05-16 | 2013-05-16 | Security element, manufacturing method, data carrier equipped with the security element and method for verifying the authenticity |
PCT/EP2014/001289 WO2014183865A1 (en) | 2013-05-16 | 2014-05-13 | Security element, production method, data carrier equipped with the security element and method for checking the authenticity |
Publications (2)
Publication Number | Publication Date |
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EP2996881A1 EP2996881A1 (en) | 2016-03-23 |
EP2996881B1 true EP2996881B1 (en) | 2017-03-29 |
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Application Number | Title | Priority Date | Filing Date |
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EP14724313.3A Active EP2996881B1 (en) | 2013-05-16 | 2014-05-13 | Security element, production method, data carrier equipped with the security element and method for checking the authenticity |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2996881B1 (en) |
CA (1) | CA2907989A1 (en) |
DE (1) | DE102013008507A1 (en) |
PL (1) | PL2996881T3 (en) |
WO (1) | WO2014183865A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022001659A1 (en) | 2022-05-11 | 2023-11-16 | Giesecke+Devrient Currency Technology Gmbh | Value document with luminescent feature, value document system, manufacturing process and testing method |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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GB0228303D0 (en) | 2002-12-04 | 2003-01-08 | Rue De Int Ltd | Security device and method |
WO2008100885A1 (en) * | 2007-02-12 | 2008-08-21 | Evident Technologies | Semiconductor nanocrystals as marking devices |
US20110298204A1 (en) * | 2010-06-07 | 2011-12-08 | Xerox Corporation | Document security by aligning visible and hidden marks |
DE102010054760A1 (en) * | 2010-12-16 | 2012-02-16 | Giesecke & Devrient Gmbh | Security element, method of making same and disk |
DE102013008505A1 (en) * | 2012-11-30 | 2014-06-05 | Giesecke & Devrient Gmbh | Security element, manufacturing method, data carrier equipped with the security element and method for verifying the authenticity |
-
2013
- 2013-05-16 DE DE102013008507.1A patent/DE102013008507A1/en not_active Withdrawn
-
2014
- 2014-05-13 CA CA2907989A patent/CA2907989A1/en not_active Abandoned
- 2014-05-13 PL PL14724313T patent/PL2996881T3/en unknown
- 2014-05-13 WO PCT/EP2014/001289 patent/WO2014183865A1/en active Application Filing
- 2014-05-13 EP EP14724313.3A patent/EP2996881B1/en active Active
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None * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102022001659A1 (en) | 2022-05-11 | 2023-11-16 | Giesecke+Devrient Currency Technology Gmbh | Value document with luminescent feature, value document system, manufacturing process and testing method |
Also Published As
Publication number | Publication date |
---|---|
EP2996881A1 (en) | 2016-03-23 |
WO2014183865A1 (en) | 2014-11-20 |
CA2907989A1 (en) | 2014-11-20 |
DE102013008507A1 (en) | 2014-11-20 |
PL2996881T3 (en) | 2017-08-31 |
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