EP3513984B2 - Élément de sécurité pourvu de zone luminescente à motif - Google Patents

Élément de sécurité pourvu de zone luminescente à motif Download PDF

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Publication number
EP3513984B2
EP3513984B2 EP19000016.6A EP19000016A EP3513984B2 EP 3513984 B2 EP3513984 B2 EP 3513984B2 EP 19000016 A EP19000016 A EP 19000016A EP 3513984 B2 EP3513984 B2 EP 3513984B2
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EP
European Patent Office
Prior art keywords
motif
region
luminescence
optically variable
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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EP19000016.6A
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German (de)
English (en)
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EP3513984A1 (fr
EP3513984B1 (fr
Inventor
Gianluca Messa
Matthias Pfeiffer
Andreas Holzmeister
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Giesecke and Devrient Currency Technology GmbH
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Giesecke and Devrient Currency Technology GmbH
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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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • 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 with a luminescent motif area for securing security papers, valuable documents and other data carriers.
  • the invention also relates to a method for producing such a security element and to a data carrier equipped with such a security element.
  • Data carriers such as valuables or identification documents, but also other valuables, such as branded items, are often provided with security elements for security purposes, which allow the authenticity of the data carrier to be checked and which also serve as protection against unauthorized reproduction.
  • luminescent substances to secure valuables or identification documents.
  • the presence of the luminescent substances can then be checked, for example, using a UV lamp.
  • fluorescent mottled fibers can be incorporated into a security paper, which usually consist of short fibers provided with a fluorescent coating.
  • the mottled fibers are invisible under normal lighting, but under UV lighting they become clearly visible despite their small size due to their bright fluorescence, for example in red, green or blue.
  • the printing of true color luminescence images is also known, particularly in the passport area.
  • the implementation is usually carried out using ink-jet printing with special colors that are not visible under normal lighting and, when stimulated using UV light, show a color impression comparable to that of a classic image, for example a portrait of the passport holder.
  • ink-jet fluorescent inks are now relatively easily available, especially through online trading, which enables a counterfeiter to produce fake impressions.
  • Printing ink manufacturers also sometimes offer fluorescent inks that are intended for technical gadgets or brand protection.
  • EP 1 880 864 A2 shows a security element that, in addition to an optically variable motif that is visible in daylight, includes a motif that luminesces in UV light.
  • US 2017/0334235 A1 shows a security element with an optically variable layer, under which a luminescent layer is arranged, wherein the color tones of the luminescent layer can correspond to the two color tones of the optically variable layer.
  • US 2010/0072739 A1 shows a security element with two partial areas, each of which has different mixtures printed with an optically variable pigment and a luminescent pigment. The daylight motif area and the multicolored luminescence motif area are arranged congruently, i.e. completely overlapping.
  • the hue of the luminescence in one sub-area can correspond to one of the two hues of the optically variable pigments in the other sub-area. Proceeding from this, the invention is based on the object of providing a security element of the type mentioned at the outset with an attractive appearance and high security against forgery.
  • UV light and daylight are used in this application synonymously for light from the visible wavelength range (approximately 380 nm to 780 nm).
  • UV light or UV excitation refers to light from the ultraviolet wavelength range from approximately 100 nm to 380 nm.
  • the adaptation mentioned creates an interaction between the optically variable daylight motif area and the multicolored luminescence motif, which links two security features that are visible in different lighting situations and therefore increases the security effect of the security element.
  • the adaptation mentioned can be realized by adapting the optically variable daylight motif area with a color in at least one of its appearances to the at least one multicolored luminescence motif.
  • An adjustment in color means that the color tone of at least a portion of the daylight motif area matches the luminescence color tone of a portion of the at least one multicolored luminescence motif.
  • the optically variable daylight motif area has at least two areas with the same color tone in at least one of its appearances and the at least one multicolored luminescence motif. In one aspect, there is even the same color gradient between the two mentioned areas with the same color tone from the color tone of the first area to the color tone of the second area.
  • Recreating a color match between an optically variable area and a luminescent motif area represents a major challenge for a potential counterfeiter, especially when multiple colors, a mixed color of multiple primary colors, or even a color gradient must match.
  • the luminescence motif area is a true-color luminescence area that contains mixed colors of at least two, preferably three, luminescence primary colors.
  • the true color luminescence area contains mixed colors of luminescence green, luminescence red and luminescence blue.
  • the optically variable daylight motif area and the luminescence motif area are arranged adjacent to one another or spaced apart from one another on the security element.
  • the mutually adapted partial areas of the daylight motif area and the luminescence motif area can be arranged adjacent to one another, so that the adjustment, for example in color tone, is particularly noticeable and can be easily checked.
  • the optically variable daylight motif area and the luminescence motif area are arranged to overlap one another on the security element, with the daylight motif area and the luminescence motif area being matched in color to one another in the overlap area.
  • the optically variable daylight motif area and the luminescence motif area form motif parts that complement one another to form an overall motif. Especially when illuminated with daylight and UV light at the same time, the addition of the individual parts of the motif to an overall motif is very noticeable.
  • the adaptation already mentioned also provides an interaction between the two parts of the motif, which, in addition to complementing an overall motif, serves as an indicator of authenticity.
  • the optically variable daylight motif area preferably contains one or more elements selected from the group consisting of holograms, hologram-like diffraction structures, diffraction patterns, structures with a color-shifting effect, cinema shapes, structures with a microlens effect, and micro-optical display arrangements, in particular moire magnification arrangements and lenticular images.
  • the luminescence motif area can be designed to be optically non-variable, but in an advantageous development of the invention the luminescence motif area is also designed to be optically variable and therefore shows at least two different appearances after UV excitation from different excitation directions, or at least shows after UV excitation two different appearances from different viewing directions. Furthermore, the luminescence motif region can also show different appearances when excited with different excitation wavelengths (for example 254 nm and 365 nm).
  • the optically variable daylight motif area is adapted in at least one of its appearances to at least one of the appearances of the luminescence motif area.
  • the daylight motif area can of course also be advantageously adapted to all appearances of the luminescence motif area.
  • An optically variable luminescence motif area is advantageously part of a micro-optical display arrangement, in particular a Moire magnification arrangement or a lenticular image.
  • the optically variable daylight motif area and/or the luminescence motif area contain an IR-absorbing substance, preferably in the form of patterns, characters or a coding, such as a barcode or QR code.
  • the security element is advantageously a security thread, in particular a window security thread or a pendulum security thread, a tear thread, a security tape, a security strip, a patch or a label for application to a security paper, document of value or the like.
  • the security element can advantageously show different appearances in daylight and in UV light from opposite sides.
  • different luminescence motif areas are provided on the opposite sides of the security element, which are at least partially separated from one another by a UV blocker.
  • the invention also contains a data carrier with a security element of the type described.
  • the security element can in particular be arranged in a window area of the data carrier, for example above an opening or a transparent or translucent partial area of the data carrier.
  • the security element can advantageously show different appearances from opposite sides.
  • the data carrier can in particular be a document of value, such as a banknote, in particular a paper banknote, a polymer banknote or a film composite banknote, a share, a bond, a certificate, a voucher, a check, a high-quality admission ticket, but also an ID card , such as a credit card, a debit card, a cash card, an authorization card, an ID card or a passport personalization page.
  • a banknote in particular a paper banknote, a polymer banknote or a film composite banknote, a share, a bond, a certificate, a voucher, a check, a high-quality admission ticket
  • ID card such as a credit card, a debit card, a cash card, an authorization card, an ID card or a passport personalization page.
  • FIG. 1 shows schematically a banknote 10 with a security element 12 according to the invention, the visual impression of which is shown under different lighting and viewing conditions
  • Figures 2 and 3 is shown in more detail.
  • Figure 2 specifically shows the appearance of the security element 12 when illuminated with only one type of light, either light 20 in the visible wavelength range (also referred to as daylight in this description) or UV light 22 Fig. 2(a) the appearance of the security element 12 in daylight 20 when viewed from an angle, Fig. 2(b) the appearance in daylight when viewed vertically and Fig. 2(c) the appearance of the security element 12 after UV excitation 22, which is essentially independent of the viewing direction.
  • Figure 3 shows the appearance of the security element 12 when simultaneously illuminated with both types of light 20, 22, where Fig. 3(a) the appearance when viewed from an angle and Fig. 3(b) the appearance when viewed vertically.
  • a security element 12 illustrates that contains two non-overlapping but adjacent motif areas 14, 16, which in the exemplary embodiment are defined by the upper and lower half of the arch of the in Fig. 1 shown arch motif are formed.
  • the motif areas 14, 16 can also be arranged at a distance from one another, for example.
  • the first motif area represents an optically variable daylight motif area 14, which shows two different appearances in visible light 20 (daylight) from different viewing directions.
  • the motif area 14 appears with the color magenta (M) when viewed vertically, as in Fig. 2(b) shown, and when viewed from an angle with the color green (G), as in Fig. 2(a) shown.
  • the second motif area represents a luminescence motif area 16, which is not visible in pure daylight lighting, and in the Figures 2(a) and 2(b) is therefore only shown with a dashed outline.
  • UV excitation 22 shows the luminescence motif area 16 a multi-colored luminescence motif, in the exemplary embodiment Figures 2 and 3
  • the luminescent motif luminesces with the luminescent colors magenta (M) and blue (B), respectively.
  • the luminescent color magenta is a mixed color that is created by additive color mixing of luminescent red and luminescent blue.
  • the daylight motif area 14 is hardly or not visible and in the Fig. 2(c) therefore only shown with a dashed outline.
  • the luminescence motif of the color areas 16-1, 16-2 does not change when the security element 12 is tilted, but rather appears essentially the same when viewed vertically and when viewed at an angle or illuminated Fig. 2(c) illustrated color impression.
  • a special feature of the optically variable daylight motif area 14 is its appearance when vertical Viewing adapted to the luminescence motif of the color areas 16-1, 16-2, the motif area 14 shows the same shade of magenta (M) as the partial area 16-1 of the luminescence motif. Reproducing such a color match between an optically variable area 14 and a luminescence area 16 represents a great challenge for a potential counterfeiter, especially if a mixed color matches, as here, or if several colors or even color gradients match, as shown in embodiments described further below.
  • M magenta
  • the color match can be checked by alternating illumination of the security element 12 with daylight 20 and UV light 22, but can in particular also be queried by simultaneous illumination with daylight and UV light, as in Fig. 3 illustrated.
  • the in Fig. 3(a) shown oblique view of the daylight motif area 14 with the color green (G) and the luminescence area 16 in the first color area 16-1 with the color magenta (M) and in the second color area 16-2 with the color blue (B).
  • the optically variable motif area 14 changes its appearance and then appears like the first color area 16-1 of the luminescence area with the color magenta (M).
  • the color matching of areas 14 and 16-1 is immediately apparent to a viewer and can therefore be easily checked.
  • the adjacent arrangement of the partial areas 14, 16 results in a visually easily recognizable and memorable completion of the partial motifs 14 and 16 to form an overall motif.
  • FIG. 4(b) When viewed vertically, the optically variable daylight motif area 14 appears in visible light in a first color area 14-1 with the color magenta (M) and in a second color area 14-2 with the color blue (B).
  • M color magenta
  • B color blue
  • the appearance of the area 14 changes due to the color shift effect from magenta to green and from blue to magenta, so that the first color area 14-1 has the color green (G) when viewed at an angle in daylight and the second color area 14-2 has the color tone (G).
  • the color magenta (M) appears.
  • the second motif area 16 is like that Figures 2 and 3 already described and shows upon UV excitation 22 a multicolored luminescence motif with a first color range 16-1 in the luminescence color magenta (M) and a second color range 16-2 in the luminescence color blue (B).
  • the luminescence motif of the color areas 16-1, 16-2 does not change when the security element 12 is tilted and appears essentially the same when viewed vertically and obliquely or illuminated Fig. 4(c) illustrated color impression.
  • the optically variable daylight motif area 14 is adapted to the luminescence motif in its two appearances, each with at least one color area. Given the appearance when viewed from an angle ( Figs. 4(a) and 4(c) ) namely, both the color range 14-2 of the daylight motif area 14 and the color area 16-1 of the luminescence motif area 16 appear the color magenta (M), so that there is an adaptation in one color area.
  • M color magenta
  • both the color range 14-1 of the daylight motif area 14 and the color range 16-1 of the luminescence motif area 16 appear with the color magenta (M)
  • both the color range 14-2 of the daylight motif area 14 appear the color range 16-2 of the luminescence motif area 16 with the color blue (B).
  • the color matches mentioned can be checked by alternating lighting with daylight 20 and UV light 22, can be checked with reference to Fig. 5 but can also be tested by simultaneous lighting with daylight and UV light.
  • the in Fig. 5(a) In the oblique viewing direction shown, the color areas 14-2 and 16-1 are simultaneously in the color magenta (M).
  • the color areas 14-1 and 16-1 appear simultaneously in the color magenta (M) and, on the other hand, the color areas 14-2 and 16-2 appear simultaneously in the color blue (B).
  • FIGs 6 and 7 illustrate the use of the basic principle described in a more complex security element, namely a wide security strip 30 for application to a banknote 32, as in the daylight view of Fig. 6 illustrated.
  • the security strip 30 is in Fig. 7 presented in more detail, where there Fig. 7(a) the appearance of the security strip 30 only in daylight 20, Fig. 7(b) the appearance of the security strip 30 only in UV light 22 and Fig. 7(c) the appearance of the security strip 30 when illuminated with both types of light 20, 22 shows.
  • Figure 7(d) finally illustrates the appearance of an optional development of the security strip 30 in the IR light 24.
  • the security strip 30 contains an optically variable daylight motif area 40 consisting of several partial areas 42, 44, the partial areas 42, 44 each containing a hologram 46 which, when viewed vertically, has a color gradient from a light blue color area 46-1 to a dark blue color area 46 -2 shows.
  • the color gradient is illustrated in the figures as a four-stage progression, but in practice it can of course contain more stages or even be continuous.
  • the security strip 30 further contains a luminescence motif area 50, which after UV excitation 22 shows a multicolored luminescence motif, which also consists of several partial areas 52, 54, 56.
  • the partial areas represent a true color portrait 52 against the background of a blue sky 54 and a letter sequence 56.
  • the sky background 54 shows a color gradient in the UV light 22 from a light blue color area 54-1 to a dark blue color area 54-2, wherein the hues of the color gradient and the color end points 54-1, 54-2 correspond to the hues of the color gradients and the color end points 46-1, 46-2 in the holograms 46 of the daylight motif area 40.
  • the color match between the color gradient in the holograms 46 and the color gradient in the luminescent sky background 54 can now be checked when viewed vertically by alternating illumination with daylight 20 and UV light 22; it can be checked with reference to Fig. 7(c) However, it can also be checked by simultaneously illuminating the security strip 30 with daylight and UV light.
  • the security features described in the visible and UV spectral range can be supplemented by further authenticity features.
  • the partial areas 40, 50 can, for example, additionally contain an IR-absorbing substance 62, which is designed in a partial area in the form of a code, for example a QR code 60.
  • a code for example a QR code 60.
  • the change in the visual appearance of the security element when changing from daylight viewing to viewing under UV excitation can be combined with an optically variable luminescence motif.
  • an optically variable luminescence motif can be obtained, analogous to conventional lens tilt images, by arranging a regular arrangement of parallel cylindrical lenses 70 at a distance from a luminescence motif area 72, which is alternately divided into a plurality of parallel luminescent strips 74A, 74B.
  • the strips 74A, 74B and the cylindrical lenses 70 are coordinated with one another in such a way that after UV excitation only the stripes 74A are visible from a first viewing direction and only the stripes 74B are visible from a second viewing direction and together they each produce a desired luminescence image.
  • Figure 9 illustrates in (a) to (c) some possible visual appearances of such an optically variable luminescence motif when changing the viewing direction (arrow 90).
  • Fig. 9(a) When exposed to UV excitation from a first viewing direction, the illustrated luminescence region 80 appears in a first color, for example red (R), while from a second viewing direction it appears in a second color, for example yellow (Y).
  • R red
  • Y yellow
  • the luminescence area represents a two-color pattern of two parallel stripes 82, 84, the luminescence colors of which exchange one another when the viewing direction changes 90. From a first viewing direction, for example after UV excitation, the strips 82, 84 show the color sequence red-yellow (left part of the image), while from a second viewing direction they show the color sequence yellow-red (right part of the image).
  • An additional motif 88 appears or disappears in the luminescence area 86 when tilting 90.
  • the luminescence area 86 appears uniformly red (R), while from a second viewing direction additional coat of arms motifs 88 appear in yellow (Y) against the red background are visible.
  • Such optically variable luminescence effects cannot only be achieved with lens arrangements Fig. 8 , but also, for example, with prism arrangements or with blind grids, in which case the grid elements can be formed in particular from opaque or transparent UV blockers.
  • luminescent microimages of the same or different colors are used in the context of the present application. In daylight, the microimages can either be invisible, for example transparent or have the same body color as the background, or they can be visible and have the same or different colors.
  • Figure 10 shows, by way of example, different motif images 100 of such moiré enlargement arrangements, as can be provided, for example, in a security thread as part of a security element described above.
  • the regularly arranged microimages are each designed in the form of a star for illustration, but in practice they can have any other shape.
  • the Figures 10(a) to 10(d) The appearance of the motif images in daylight 20 is shown in each case, and the appearance in UV light 22 is shown in the right half of the image.
  • the microimages 102 are initially designed so that they all have the same color tone 104-F in daylight 20, while the microimages 102 glow in different luminescence colors 106-A, 106-B, 106-C, 106-D in UV light 22.
  • the moiré effect results in a dynamic movement effect when the security element is tilted when viewed in both daylight 20 and UV light 22, with the moving, moiré-enlarged stars appearing monochromatic in daylight 20, but with different colors in UV light 22 Luminescent colors 106-A to 106-D light up.
  • the microimages 102 are transparent in visible light 20 and their position is therefore only shown in dashed lines in the figure, while in UV light 22 they glow in different luminescence colors 106-A, 106-B, 106-C, 106-D.
  • the motif image 100 thus produces no recognizable image and no movement effect, while in UV light 22, when the security element is tilted, a dynamic movement effect with moving, moiré-enlarged stars shining in the luminescent colors 106-A to 106-D is visible becomes.
  • the microimages 102 are designed so that they all have the same color tone 104-F in daylight 20, and also all shine in the same color tone 106-G in UV light 22.
  • the common daylight color 104-F and the common luminescence color 106-G can be the same or different.
  • the moiré effect results in a monochrome dynamic movement effect in both daylight 20 and UV light 22 when the security element is tilted.
  • the exemplary embodiment of the Fig. 10(d) finally shows a design in which the microimages 102 are designed so that they all have the same color tone 106-G in UV light 22, while in daylight 20 they have different colors 104-A, 104-B, 104-C, 104 -D appear.
  • the moiré effect results in a dynamic movement effect in both daylight 20 and UV light 22 when the security element is tilted, with the moving, moiré-enlarged stars shining in one color in UV light 22, but with different colors 104 in daylight 20 -A to 104-D appear.

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  • Credit Cards Or The Like (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)

Claims (19)

  1. Élément de sécurité (12) destiné à la sécurisation de papiers de sécurité, documents de valeur et autres supports de données (10), comprenant
    - une zone de motif optiquement variable de lumière du jour (14) qui, à la lumière visible (20), montre à partir de directions d'observation différentes au moins deux images d'apparence différentes (14G, 14M), et
    - une zone de motif luminescente (16) qui, après excitation UV, montre au moins un motif luminescent (16-1, 16-2),
    dans lequel le motif luminescent est un motif luminescent multicolore, et la zone de motif optiquement variable de lumière du jour est, dans au moins une de ses images d'apparence, adaptée à l'au moins un motif luminescent multicolore, à savoir comporte au moins une zone du même dégradé de couleur qu'une zone du motif luminescent multicolore, et
    la zone de motif optiquement variable de lumière du jour, dans au moins une de ses images d'apparence, et l'au moins un motif luminescent multicolore comportent au moins deux zones ayant la même teinte, entre les deux zones précitées ayant la même teinte, il y a respectivement le même dégradé de couleur de la teinte de la première zone à la teinte de la deuxième zone.
  2. Élément de sécurité (12) destiné à la sécurisation de papiers de sécurité, documents de valeur et autres supports de données (10), comprenant
    - une zone de motif optiquement variable de lumière du jour (14) qui, à la lumière visible (20), montre à partir de directions d'observation différentes au moins deux images d'apparence différentes (14G, 14M), et
    - une zone de motif luminescente (16) qui, après excitation UV, montre au moins un motif luminescent (16-1, 16-2),
    dans lequel le motif luminescent est un motif luminescent multicolore, et la zone de motif optiquement variable de lumière du jour est, dans au moins une de ses images d'apparence, adaptée à l'au moins un motif luminescent multicolore, à savoir comporte au moins une zone de la même teinte qu'une zone du motif luminescent multicolore, et
    la zone de motif luminescente est une zone luminescente de couleur réelle qui comporte des couleurs mélangées à partir d'au moins deux couleurs primaires luminescentes.
  3. Élément de sécurité (12) destiné à la sécurisation de papiers de sécurité, documents de valeur et autres supports de données (10), comprenant
    - une zone de motif optiquement variable de lumière du jour (14) qui, à la lumière visible (20), montre à partir de directions d'observation différentes au moins deux images d'apparence différentes (14G, 14M), et
    - une zone de motif luminescente (16) qui, après excitation UV, montre au moins un motif luminescent (16-1, 16-2),
    dans lequel le motif luminescent est un motif luminescent multicolore, et la zone de motif optiquement variable de lumière du jour est, dans au moins une de ses images d'apparence, adaptée à l'au moins un motif luminescent multicolore, à savoir comporte au moins une zone de la même teinte qu'une zone du motif luminescent multicolore, et la zone de motif optiquement variable de lumière du jour et la zone de motif luminescente sont agencées de manière adjacente l'une à l'autre ou espacées sur l'élément de sécurité.
  4. Élément de sécurité (12) destiné à la sécurisation de papiers de sécurité, documents de valeur et autres supports de données (10), comprenant
    - une zone de motif optiquement variable de lumière du jour (14) qui, à la lumière visible (20), montre à partir de directions d'observation différentes au moins deux images d'apparence différentes (14G, 14M), et
    - une zone de motif luminescente (16) qui, après excitation UV, montre au moins un motif luminescent (16-1, 16-2),
    dans lequel le motif luminescent est un motif luminescent multicolore, et la zone de motif optiquement variable de lumière du jour est, dans au moins une de ses images d'apparence, adaptée à l'au moins un motif luminescent multicolore, à savoir comporte au moins une zone de la même teinte qu'une zone du motif luminescent multicolore, et
    la zone de motif optiquement variable de lumière du jour et la zone de motif luminescente constituent des parties de motif complémentaires l'une à l'autre de manière à former un motif complet.
  5. Élément de sécurité selon au moins une des revendications 2 à 4, caractérisé en ce que la zone de motif optiquement variable de lumière du jour, dans la au moins une de ses images d'apparence, et l'au moins un motif luminescent multicolore comportent au moins deux zones ayant la même teinte, et que entre les deux zones précitées ayant la même teinte, il y a respectivement le même dégradé de couleur de la teinte de la première zone à la teinte de la deuxième zone.
  6. Élément de sécurité selon au moins une des revendications 1 et 3 à 5, caractérisé en ce que la zone de motif luminescente est une zone luminescente de couleur réelle qui comporte des couleurs mélangées à partir d'au moins deux, de préférence trois couleurs primaires luminescentes, en particulier des couleurs mélangées à partir de vert luminescent, rouge luminescent et bleu luminescent.
  7. Élément de sécurité selon au moins une des revendications 1, 2 et 4 à 6, caractérisé en ce que la zone de motif optiquement variable de lumière du jour et la zone de motif luminescente sont agencées de manière adjacente l'une à l'autre ou espacées sur l'élément de sécurité.
  8. Élément de sécurité selon au moins une des revendications 1, 2 et 4 à 6, caractérisé en ce que la zone de motif optiquement variable de lumière du jour et la zone de motif luminescente sont agencées sur l'élément de sécurité de manière se chevauchant entre elles, et que la zone de motif de lumière du jour et la zone de motif luminescente sont, dans la zone de chevauchement, adaptées l'une à l'autre quant à leur couleur.
  9. Élément de sécurité selon au moins une des revendications 1 à 3 et 5 à 8, caractérisé en ce que la zone de motif optiquement variable de lumière du jour et la zone de motif luminescente constituent des parties de motif complémentaires l'une à l'autre de manière à former un motif complet.
  10. Élément de sécurité selon au moins une des revendications 1 à 9, caractérisé en ce que la zone de motif optiquement variable de lumière du jour contient un ou plusieurs éléments choisis dans le groupe consistant en hologrammes, structures de diffraction s'apparentant à des hologrammes, modèles de diffraction, structures à effet de changement des couleurs par basculement, kinoformes, structures ayant un effet de microlentilles, agencements micro-optiques de représentation, en particulier agencements de grossissement par effet de Moiré et images à trame lenticulaire.
  11. Élément de sécurité selon au moins une des revendications 1 à 10, caractérisé en ce que la zone de motif luminescente est réalisée sous forme optiquement variable et montre, après excitation UV à partir de directions d'excitation différentes, au moins deux images d'apparence différentes, ou montre, après excitation UV, au moins deux images d'apparence différentes à partir de directions d'observation différentes.
  12. Élément de sécurité selon la revendication 11, caractérisé en ce que la zone de motif luminescente réalisée sous forme optiquement variable fait partie d'un agencement micro-optique de représentation, en particulier d'un agencement de grossissement par effet de Moiré ou d'une image à trame lenticulaire.
  13. Élément de sécurité selon au moins une des revendications 1 à 12, caractérisé en ce que la zone de motif optiquement variable de lumière du jour et/ou la zone de motif luminescente contiennent une substance absorbant le rayonnement infrarouge, de préférence sous forme de motifs, caractères ou d'une codification, tels qu'un code-barre ou un code QR.
  14. Élément de sécurité selon au moins une des revendications 1 à 13, caractérisé en ce que l'élément de sécurité est un fil de sécurité, en particulier un fil de sécurité à fenêtre ou un fil de sécurité pendulaire, une bande de sécurité ou un ruban de sécurité.
  15. Support de données doté d'un élément de sécurité selon au moins une des revendications 1 à 14.
  16. Procédé de fabrication d'un élément de sécurité selon une des revendications 1 et 7 à 14, dans lequel
    - sur un support, une zone de motif optiquement variable de lumière du jour est générée, laquelle, à la lumière visible, montre à partir de directions d'observation différentes au moins deux images d'apparence différentes, et
    - sur le support, une zone de motif luminescente est générée, laquelle, après excitation UV, montre au moins un motif luminescent multicolore, dans lequel
    - la zone de motif optiquement variable de lumière du jour est, dans au moins une de ses images d'apparence, adaptée à l'au moins un motif luminescent multicolore, ce qui a lieu en ce qu'au moins une zone dans l'image d'apparence présente le même dégradé de couleur qu'une zone du motif luminescent multicolore, et
    la zone de motif optiquement variable de lumière du jour, dans l'au moins une de ses images d'apparence, et l'au moins un motif luminescent multicolore comportent au moins deux zones ayant la même teinte, entre les deux zones précitées ayant la même teinte, il y a respectivement le même dégradé DE COULEUR de la teinte de la première zone à la teinte de la deuxième zone.
  17. Procédé de fabrication d'un élément de sécurité selon une des revendications 2 et 5 à 14, dans lequel
    - sur un support, une zone de motif optiquement variable de lumière du jour est générée, laquelle, à la lumière visible, montre à partir de directions d'observation différentes au moins deux images d'apparence différentes, et
    - sur le support, une zone de motif luminescente est générée, laquelle, après excitation UV, montre au moins un motif luminescent multicolore, dans lequel
    - la zone de motif optiquement variable de lumière du jour est, dans au moins une de ses images d'apparence, adaptée à l'au moins un motif luminescent multicolore, ce qui a lieu en ce qu'au moins une zone dans l'image d'apparence présente la même teinte qu'une zone du motif luminescent multicolore, et
    la zone de motif luminescente est une zone luminescente de couleur réelle qui comporte des couleurs mélangées à partir d'au moins deux couleurs primaires luminescentes.
  18. Procédé de fabrication d'un élément de sécurité selon une des revendications 3 et 5 à 14, dans lequel
    - sur un support, une zone de motif optiquement variable de lumière du jour est générée, laquelle, à la lumière visible, montre à partir de directions d'observation différentes au moins deux images d'apparence différentes, et
    - sur le support, une zone de motif luminescente est générée, laquelle, après excitation UV, montre au moins un motif luminescent multicolore, dans lequel
    - la zone de motif optiquement variable de lumière du jour est, dans au moins une de ses images d'apparence, adaptée à l'au moins un motif luminescent multicolore, ce qui a lieu en ce qu'au moins une zone dans l'image d'apparence présente la même teinte qu'une zone du motif luminescent multicolore, et
    la zone de motif optiquement variable de lumière du jour et la zone de motif luminescente sont agencées de manière adjacente l'une à l'autre ou espacées sur l'élément de sécurité.
  19. Procédé de fabrication d'un élément de sécurité selon une des revendications 4 à 14, dans lequel
    - sur un support, une zone de motif optiquement variable de lumière du jour est générée, laquelle, à la lumière visible, montre à partir de directions d'observation différentes au moins deux images d'apparence différentes, et
    - sur le support, une zone de motif luminescente est générée, laquelle, après excitation UV, montre au moins un motif luminescent multicolore, dans lequel
    - la zone de motif optiquement variable de lumière du jour est, dans au moins une de ses images d'apparence, adaptée à l'au moins un motif luminescent multicolore, ce qui a lieu en ce qu'au moins une zone dans l'image d'apparence présente la même teinte qu'une zone du motif luminescent multicolore, et
    la zone de motif optiquement variable de lumière du jour et la zone de motif luminescente constituent des parties de motif complémentaires l'une à l'autre de manière à former un motif complet.
EP19000016.6A 2018-01-17 2019-01-10 Élément de sécurité pourvu de zone luminescente à motif Active EP3513984B2 (fr)

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DE102018000343.5A DE102018000343A1 (de) 2018-01-17 2018-01-17 Sicherheitselement mit Lumineszenz-Motivbereich

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DE102019008116A1 (de) 2019-11-21 2021-05-27 Giesecke+Devrient Currency Technology Gmbh Lumineszenzelement mit Lumineszenzmotivbereich
CN111178478A (zh) * 2020-01-21 2020-05-19 熊建民 防冷、热撕标签及防伪方法以及标签的制作方法
DE102021002764A1 (de) 2021-05-27 2022-12-01 Giesecke+Devrient Currency Technology Gmbh Verfahren zur Herstellung einer lumineszenten Druckfarbe
DE102022000101A1 (de) * 2022-01-12 2023-07-13 Giesecke+Devrient Currency Technology Gmbh Optisch variables Sicherheitselement

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EP3513984B1 (fr) 2020-09-09

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