WO2014183865A1 - Élément de sécurité, procédé de fabrication, support de données équipé de l'élément de sécurité et procédé permettant de vérifier l'authenticité - Google Patents

Élément de sécurité, procédé de fabrication, support de données équipé de l'élément de sécurité et procédé permettant de vérifier l'authenticité Download PDF

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Publication number
WO2014183865A1
WO2014183865A1 PCT/EP2014/001289 EP2014001289W WO2014183865A1 WO 2014183865 A1 WO2014183865 A1 WO 2014183865A1 EP 2014001289 W EP2014001289 W EP 2014001289W WO 2014183865 A1 WO2014183865 A1 WO 2014183865A1
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WO
WIPO (PCT)
Prior art keywords
color
color layer
security element
individual elements
visible
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.)
Ceased
Application number
PCT/EP2014/001289
Other languages
German (de)
English (en)
Inventor
Klaus Habik
Daniela Otto
Diana SAFADI
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.)
Giesecke+Devrient GmbH
Original Assignee
Giesecke+Devrient 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 Giesecke+Devrient GmbH filed Critical Giesecke+Devrient GmbH
Priority to EP14724313.3A priority Critical patent/EP2996881B1/fr
Priority to CA2907989A priority patent/CA2907989A1/fr
Publication of WO2014183865A1 publication Critical patent/WO2014183865A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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, in particular 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 Planche th (small colored discs), which are mixed in the papermaking as a security feature under the pulp. In addition, fluorescent security threads made of plastic, metal or other material are used, which are embedded in the Textilher- position wholly or partly in the paper. 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.
  • Photochromic ink changes color when excited with UV light.
  • the iridescent photochromic printing ink Iridescent or pearlescent inks contain transparent pigments that consist of tiny glimmer sheets covered with thin foil. 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 which has two or more areas, each area containing one material or a combination of materials, the two or more areas having substantially the same visible color as the first Viewing conditions comprising visible light and various visible colors under second viewing conditions, the second viewing conditions comprising a combination of visible light and UV light (see claim 1 of EP 1 567358 B1).
  • EP 1 567358 B1 discloses a luminescent security element for securing banknotes, which has two or more areas, each of which area contains a material or a combination of materials, the two or more areas having different visible colors among the first Viewing conditions comprising visible light and 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 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.
  • 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 individual elements, wherein:
  • the microscopic elementary elements each contain at least three, in particular four, neighboring areas produced by printing technology, which are designed such 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 a substantially uniform brightness and, under third viewing conditions, perceives within each individual element a so-called second light-middle-dark contrast, which is inverted compared with the first light-middle-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 to substantially equal parts
  • Third viewing conditions viewing under illumination with ultraviolet light.
  • (preferred) security element according to one of paragraphs 2 or 3, wherein the two-dimensional cascade comprises several arrangements of microscopic elements in which the microscopic individual elements are each arranged linear, rectilinear, circular or wave-shaped connected in series and the arrangements of the microscopic Individual elements are designed so 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.
  • (preferred) security element according to one of the 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 shows a bright visible color with ultraviolet light.
  • the luminescent material may e.g. be mixed in a daylight color.
  • 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.
  • the daylight color is present in a printing layer, above which a further printing layer comprising the luminescent material is applied.
  • the microscopic individual elements each contain four adjacent areas produced by printing technology, of which exactly two areas have a luminescent material which, when illuminated with visible light, is visible and when illuminated with ultraviolet light shows a bright visible color.
  • the luminescent material may for example be mixed in a daylight color.
  • 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.
  • the daylight color is present in a printing layer, above which a further printing layer comprising the luminescent material is applied.
  • the microscopic individual elements each contain three adjacent areas produced by printing technology, of which:
  • a second region has a color layer in a medium or medium-dark visible color
  • a third region has a color layer in a bright visible color.
  • a first region has a color layer and the color layer has 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
  • a third region has a color layer in a bright visible color.
  • 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 when illuminated with ultraviolet light shows a bright visible color;
  • a third region has a color layer in a medium or medium dark visible color
  • a fourth area has a color layer in a bright visible color.
  • a first region has a color layer and the color layer is a material in a very dark visible color and another, under UV irradiation luminescent material that is invisible when illuminated with visible light and when illuminated with ultraviolet light shows a bright visible color, contains;
  • 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
  • a fourth area has a color layer in a bright visible color.
  • 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.
  • a method for verifying the authenticity of a data carrier, in particular a value document, according to paragraph 14 or 15, comprising the step of visually detecting the dynamic impression of the macroscopic motif defined in 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.
  • 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, and the synonyms body color and color are also used below.
  • the term "motif” is understood in particular to mean a pattern or a picture, and 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 “Mathematic Formulary”, Konrad Wittwer KG, Stuttgart, 1984, pages 12-15).
  • polygon refers in particular to an n-corner with n> 3.
  • 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.
  • 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 be particularly useful in oscillating (ie by a periodic "back and forth") of the transition from (1) the (2) a UV light / daylight lighting situation in approximately 1: 1 ratio to (3) a substantially pure UV lighting situation is observed
  • the light play of the microscopic individual elements produced in this way causes a dynamic
  • the periodic change in the gap between the UV light source and the security element is decisive for the dynamic effect, whereby the percentage ratio of daylight / UV light changes in particular in a range of 70/30 to 30/70 the human eye the brighter picture components of a motif as superficial or dominant If you look at the dynamic motion effect when changing the brightness of nearby motif elements, such as lines, points or circles, it 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 movement effect unfolds, for example, in the form of a rotational effect caused by optical illusion (ie the movement of a rotating wheel) or in the form of a "pumping action" otherwise known in holograms (ie periodically
  • a rotating effect can be accomplished, for example, by joining the microelements together to form a pattern with rotational symmetry, in particular a pattern with rotational symmetry and mirror symmetry In this case, white areas or unprinted areas can be present between the individual microelements.
  • fluorescent pigments and fluorescent dyes in particular organic colorants
  • Phosphorescent materials are less preferred, but can be used provided that the duration of the
  • 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.
  • Figures 1 to 15 the variant embodiment of a security element, which 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 shows a variant of a security element according to the present invention
  • Figures 17 to 20 four examples for the production of microscopic individual elements from which the macroscopic motif of FIG. 16 may be composed.
  • Fig. 10 illustrates the structure 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 bases will be described with reference to FIGS. 1 to 15.
  • Figure 10 illustrates a substrate substrate, for example the paper substrate of a banknote having on its front side first motif elements (areas with the reference numbers 1 and 3) and second motif elements (areas with the reference number 2).
  • the first and the second motif elements are each formed by color layers produced by printing technology, wherein the first motif elements each contain a lower color layer 1 and an upper color layer 3 and the second motif elements each comprise only one color layer 2.
  • the color layers have the following properties:
  • Color layer V dark blue daylight color
  • Color layer 2 light green daylight color
  • Color layer 3 yellow fluorescent color
  • the yellow fluorescent color of the color layer 3 is invisible when viewed in daylight alone and appears yellow when viewed in UV light.
  • Figures 1 to 3 show the structure of the printing plates for producing the security element shown in Fig. 10 in plan view.
  • the printing plate shown in Fig. 1 is provided for the production of the color layer 1 in dark blue daylight color.
  • Fig. 2 shows the printing form for the production of the color layer 2 in light green daylight color.
  • Fig. 3 shows the printing form for the production of the color layer 3 in yellow fluorescent color.
  • Fig. 4 illustrates the structure of the combination printing obtainable by the printing forms shown in Figs.
  • the compression has an outer, rectangular border 4 and an inner area 5.
  • the printing ink of the rectangular border 4 is exclusively borrowed from the printing plate shown in FIG.
  • the inner region 5 contains a background pressure generated by the printing forms of FIG. 1 and FIG. 2 and a plurality of regions overprinted by the printing form of FIG. 3.
  • Fig. 5 shows the security element of Fig. 10 in plan view when viewed in pure daylight.
  • 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.
  • the surface is monochrome for the eye.
  • FIGS. 5, 6 and 7 The realization of the motifs shown in FIGS. 5, 6 and 7 is illustrated by means of the cross-sectional views shown in FIGS. 11, 12 and 13.
  • Fig. 11 shows the security element of Fig. 5 in pure daylight.
  • the reference numeral 8 designates the color layers formed with fluorescent color 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 a ratio of approximately 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 illustrated with reference to FIGS. 8, 9, 14 and 15.
  • 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 being provided by a UV hand lamp sliding 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.
  • Figures 8 (top view) and 14 (cross-sectional view) show the security element of Figure 10 when viewed under daylight / UV light in a 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 top view and 15 (cross-sectional view) show the security element of Figure 10 when viewed under daylight / UV light in a ratio of about 2: 1.
  • the areas with the reference number 13 are perceived by the observer with a dark green color, while the areas with the reference number 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.
  • the quality of the movement effect is u.a. depending on
  • the macroscopic motif 15 shown in FIG. 16 is composed of individual elements 16.
  • the nature of a single element, or rather the areas 17, 18 and 19 contained therein, will be explained in more detail with reference to FIGS. 17a to 17d.
  • the single element shown in Fig. 17a 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.
  • the individual element shown in FIG. 17a 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.
  • 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 illumination with a combination of daylight and UV light to substantially equal parts.
  • Fig. 17d shows the brightnesses of the areas A, B and C of the single element when viewed in UV light.
  • the macroscopic motif 15 shown in Fig. 16 is composed of individual elements 16, the nature of a single element, more specifically the areas 1, 18 and 19 contained therein, will be explained in more detail with reference to Figures 18a to 18d.
  • the single element shown in Fig. 18a has four areas A, B, C and D in four 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.
  • the individual element shown in FIG. 18a contains four areas with an area coverage of 10%, 40%, 70% and 100%, respectively.
  • the darkest area with an area coverage of 100% and the second darkest area with a land area Each of 70% is additionally provided with a fluorescent color 21 or is overprinted with fluorescent ink 21.
  • Fig. 18b shows the brightnesses 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 as viewed under illumination with a combination of daylight and UV light at 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.
  • surface D is the brightest
  • surface C the second brightest
  • surface B the darkest
  • 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.
  • 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 under illumination 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 ink-jet, screen or flexo printing.
  • the macroscopic motif 15 shown in FIG. 16 is composed of individual elements 16, wherein the nature of a single element, more specifically of the areas 17, 18 and 19 contained therein, will be explained in more detail with reference to FIGS. 20a and 20b.
  • 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. 20b shows the superimposed printing comprising the blue surface 24, the dark blue surface 25, the light green surface 26 and the white surface 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)

Abstract

L'invention concerne un élément de sécurité pour un support de données, en particulier un document de valeur, comprenant un substrat de support dont la face avant comprend un motif macroscopique composé d'une pluralité d'éléments individuels microscopiques. Les éléments individuels microscopiques contiennent respectivement au moins trois zones voisines, produites par impression, lesquelles sont telles que l'observateur, dans les premières conditions d'observation, perçoit à l'intérieur de chaque élément individuel un premier contraste, dit clair-moyen-foncé, qu'il perçoit, dans des deuxièmes conditions d'observation à l'intérieur de chaque élément individuel une clarté sensiblement uniforme, et qu'il perçoit, dans des troisièmes conditions d'observation, à l'intérieur de chaque élément individuel, un deuxième contraste dit clair-moyen-foncé, lequel est inversé en comparaison du premier contraste clair-moyen-foncé, et les éléments individuels microscopiques donnent à l'observateur, en cas de changement oscillant entre les premières et les troisièmes conditions d'observation, une impression dynamique du motif macroscopique et les premières, deuxièmes et troisièmes conditions d'observation sont définies de la manière suivante : premières conditions d'observation : observation avec éclairage à la lumière visible ; deuxièmes conditions d'observation : observation avec éclairage présentant une combinaison de lumière visible et de lumière ultraviolette pour obtenir des parties sensiblement identiques ; troisièmes conditions d'observation : observation avec éclairage à la lumière ultra-violette.
PCT/EP2014/001289 2013-05-16 2014-05-13 Élément de sécurité, procédé de fabrication, support de données équipé de l'élément de sécurité et procédé permettant de vérifier l'authenticité Ceased WO2014183865A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14724313.3A EP2996881B1 (fr) 2013-05-16 2014-05-13 Élément de sécurité, procédé de fabrication, support de données équipé de cet élément de sécurité et procédé de contrôle d'authenticité
CA2907989A CA2907989A1 (fr) 2013-05-16 2014-05-13 Element de securite, procede de fabrication, support de donnees equipe de l'element de securite et procede permettant de verifier l'authenticite

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013008507.1A DE102013008507A1 (de) 2013-05-16 2013-05-16 Sicherheitselement, Herstellungsverfahren, mit dem Sicherheitselement ausgestatteter Datenträger und Verfahren zum Überprüfen der Echtheit
DE102013008507.1 2013-05-16

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WO2014183865A1 true WO2014183865A1 (fr) 2014-11-20

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EP (1) EP2996881B1 (fr)
CA (1) CA2907989A1 (fr)
DE (1) DE102013008507A1 (fr)
PL (1) PL2996881T3 (fr)
WO (1) WO2014183865A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102022001659A1 (de) 2022-05-11 2023-11-16 Giesecke+Devrient Currency Technology Gmbh Wertdokument mit Lumineszenzmerkmal, Wertdokumentsystem, Herstellungsverfahren und Prüfverfahren

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US20080191027A1 (en) * 2007-02-12 2008-08-14 San Ming Yang Semiconductor nanocrystals as marking devices
US20110298204A1 (en) * 2010-06-07 2011-12-08 Xerox Corporation Document security by aligning visible and hidden marks
DE102010054760A1 (de) * 2010-12-16 2012-02-16 Giesecke & Devrient Gmbh Sicherheitselement, Verfahren zum Herstellen desselben und Datenträger
WO2014082754A1 (fr) * 2012-11-30 2014-06-05 Giesecke & Devrient Gmbh Élément de sécurité, procédé de fabrication, support de données équipé de cet élément de sécurité et procédé de contrôle d'authenticité

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PL2996881T3 (pl) 2017-08-31
DE102013008507A1 (de) 2014-11-20
EP2996881B1 (fr) 2017-03-29
EP2996881A1 (fr) 2016-03-23

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