EP1778501B2 - Element de securite comprenant un support - Google Patents

Element de securite comprenant un support Download PDF

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Publication number
EP1778501B2
EP1778501B2 EP05770248.2A EP05770248A EP1778501B2 EP 1778501 B2 EP1778501 B2 EP 1778501B2 EP 05770248 A EP05770248 A EP 05770248A EP 1778501 B2 EP1778501 B2 EP 1778501B2
Authority
EP
European Patent Office
Prior art keywords
security document
security
authenticating mark
security element
banknote
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.)
Active
Application number
EP05770248.2A
Other languages
German (de)
English (en)
Other versions
EP1778501B1 (fr
EP1778501A2 (fr
Inventor
Manfred Heim
Jürgen Ruck
Theodor Burchard
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 and Devrient Currency Technology GmbH
Original Assignee
Giesecke and Devrient Currency Technology 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
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Priority claimed from DE102004039355A external-priority patent/DE102004039355A1/de
Priority claimed from DE102004051919A external-priority patent/DE102004051919A1/de
Application filed by Giesecke and Devrient Currency Technology GmbH filed Critical Giesecke and Devrient Currency Technology GmbH
Priority to PL05770248T priority Critical patent/PL1778501T5/pl
Publication of EP1778501A2 publication Critical patent/EP1778501A2/fr
Application granted granted Critical
Publication of EP1778501B1 publication Critical patent/EP1778501B1/fr
Publication of EP1778501B2 publication Critical patent/EP1778501B2/fr
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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
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—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
    • B42D25/328—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
    • B42D25/355—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
    • G07D7/20—Testing patterns thereon
    • G07D7/202—Testing patterns thereon using pattern matching
    • G07D7/207—Matching patterns that are created by the interaction of two or more layers, e.g. moiré patterns
    • B42D2033/26—
    • B42D2035/34—

Definitions

  • the invention relates to a security document with a security element with a transparent or translucent carrier.
  • Transparency windows in bank notes have long been known in the field of polymer notes. Providing a banknote with a see-through window on its own, however, does not yet provide additional counterfeit security for the note. Therefore, various security features have been proposed for see-through windows and partly also converted into banknotes.
  • the document describes WO 98/15418 A1 a self-verifying banknote from a flexible sheet of plastic substrate with identification marks.
  • the self-verifying banknote has a transparent window area which contains a self-verification means for checking a security element arranged in a laterally-spaced area of the sheet.
  • the self-certification takes place in that the window area is brought into register with the security element by bending or folding the sheet and the security element and the self-authorization means cooperate there suitably to authenticate the bill.
  • security windows for privacy windows are designed to require more or less complicated means for checking the authenticity of the security feature located in the window.
  • the authentication requires external UV lamps, polarizing filters, Moire filters, or even laser sources that shine through the see-through window to verify the security feature.
  • the object of the invention is to provide a generic security document which avoids the disadvantages of the prior art.
  • the security element of the security document should be difficult to reproduce and can be checked for authenticity with simple aids available almost everywhere.
  • the transparent or translucent carrier of the security element is provided with a mark of authenticity, which transmits a first optical impression in transmitted light and conveys a second optical impression in reflected light in front of a predetermined and easily accessible background, which differs significantly from the first optical impression.
  • a mark of authenticity which transmits a first optical impression in transmitted light and conveys a second optical impression in reflected light in front of a predetermined and easily accessible background, which differs significantly from the first optical impression.
  • the authenticity mark shows transmitted light patterns, characters or codes.
  • the information represented by the patterns, symbols or codes changes significantly in reflected light in front of the predetermined background.
  • a printing layer may additionally be provided, which together with patterns, symbols or codes of the authenticity indicator gives overall information in incident or transmitted light.
  • the overall information may appear or disappear, or it may be changed, in particular supplemented.
  • the authenticity mark in incident light in front of the predetermined background exhibits an optically variable effect.
  • This may, for example, be a viewing-angle-dependent color-shift effect, which conveys to the viewer a color impression which changes with the viewing direction.
  • Diffraction effects, scattering effects, in particular resulting from matting, and refractive effects, in particular caused by microlenses and / or micromirrors, are also possible.
  • the authenticity mark contains or more layers of liquid-crystalline material, in particular of cholesteric liquid-crystalline material.
  • the liquid crystal layers are transparent in transmitted light and substantially colorless, but appear in front of a strongly absorbing dark background with intense colors in appearance. In addition, they produce a color shift effect when tilting the security element from the vertical, depending on the design of a long-wave to a shorter-wave color impression, or vice versa from a short-wave to a can change over a longer wavelength color impression.
  • the liquid crystal layers are advantageously in the form of patterns, characters or codes.
  • the security document advantageously has a paper or plastic substrate.
  • the authenticity feature is preferably arranged in or above a window area or a through opening of the security document. If the security document has a plastic substrate, then the authenticity mark is advantageously applied over a transparent or translucent, in particular unprinted, area of the transparent or translucent plastic substrate.
  • the mark of authenticity is preferably applied over a continuous opening of the paper substrate or introduced paper-like in such an opening.
  • the continuous opening can be produced during papermaking without a sharp boundary edge of its edge region, so that a characteristic deckle edge is created, which is not replicate by cutting or punching.
  • the security document represents, in particular, a security paper or a value document, such as a banknote, a check, an identity card, a document or the like.
  • Fig. 1 shows a schematic representation of a banknote 10 with a see-through area 12 in a lateral portion of the note.
  • the see-through area 12 can be, for example, a continuous opening or a transparent partial area of the banknote 10.
  • a transparent security element 14 is arranged in or above this see-through area 12.
  • the security element 14 gives a first visual impression, in the exemplary embodiment the impression of a structureless and substantially colorless transparent surface.
  • the security element can also be designed in such a way that it already has a slight coloration with a defined color impression in transmitted light throughout the entire surface.
  • the security element 14 If the banknote 10 with the security element 14 is held against a background of the predetermined type, the security element 14 imparts a second optical impression, which differs significantly from the first optical impression. This clear change of appearance can be used for the authenticity of the bill.
  • the color impression, ie hue or color intensity of the security element 14 changes drastically during the transition from transmitted to reflected light observation, patterns, signs or codes appear or disappear, or an optically variable one that is not recognizable in transmitted light Effect, such as a color shift effect or a viewing angle dependent diffraction pattern.
  • Fig. 2 shows the layer structure of a security element 20
  • the security element 20 of Fig. 2 has a carrier layer 22 of a transparent film, to which a phase-shifting layer 24 and a linearly polarizing layer 26 are applied.
  • the main axis of the phase-shifting layer 24 is rotated by at least 10 °, in the exemplary embodiment by 45 °, against the polarization direction of the linearly polarizing layer 26.
  • the phase shifting layer 24 may be formed of a birefringent or an optically active material, such as a liquid crystalline material, for example in the nematic or smectic phase.
  • the security element 20 appears transparent and structureless.
  • a highly reflective background such as a metal surface or the like, it shows distinct colors whose intensity and hue can be varied widely over the optical properties of the phase shifting layer 24 and the linear polarizing layer 26.
  • the layer 26 has linearly polarizing properties over the entire visible wavelength range.
  • the returning light after passing through the security element twice, lacks a large portion of the red light, so that the security element appears in a characteristic blue hue.
  • different color effects can be produced by selecting the birefringent properties of the layer 24 or by selecting its layer thickness.
  • the linearly polarizing layer 26 is applied to a transparent carrier foil 32 with birefringent properties, so that a separate phase-shifting layer can be dispensed with.
  • Fig. 4 shows a security element 40, which basically like the example of Fig. 2 is constructed.
  • the phase-shifting layer 44 lies in Fig. 4 only partially in the form of a coding, for example in the form of a lettering or a symbol before.
  • the entire surface of the security element appears colorless and structureless.
  • the visual impression does not change in the recessed areas 46, while the areas in which the phase-shifting layer 44 is applied light up in color and make the coding visible.
  • Fig. 5 shows a further variant of the security element of Fig. 2 in which a phase-shifting layer 44 of liquid-crystalline material is applied to a carrier film 34 with linearly polarizing properties.
  • a phase-shifting layer 44 of liquid-crystalline material is applied to a carrier film 34 with linearly polarizing properties.
  • the phase-shifting layer 44 applied only partially in the form of a coding.
  • the separate linear polarizing layer is dispensable, since this function is already taken over by the carrier film 34.
  • Suitable linear polarizing films are commercially available. Production methods for wavelength-selective polarizing films are described, for example, in the document WO 2004/009373 described, the disclosure of which is included in the present application in this respect.
  • FIG. 6 Another variation is in Fig. 6 shown.
  • the security element shown there contains two interconnected foils.
  • the linearly polarizing carrier film 34 is provided with a second phase-shifting Connected film 36 suitable layer thickness.
  • the second film 36 may be made of PET or polypropylene, for example. To achieve the desired effect, care must be taken only that the major axis of the birefringent film 36 and the axis of the linearly polarizing film 34 are tilted against each other.
  • Fig. 7 shows a further variant of a security element.
  • a plurality of phase-shifting layers 44A and 44B having different optical properties are applied to a linearly polarizing carrier film 34.
  • the layers 44A, 44B may be formed, for example, by liquid crystal layers having a different orientation direction. In this way, multicolor encodings can be realized in the verification. It is understood that more than two different phase-shifting layers can be used, and that also the other described designs can be provided in an analogous manner with multicolor verification features.
  • the authenticity check of a banknote provided with security elements 40 is in Fig. 8 illustrated.
  • the banknote 50 has two similar security elements 40-1, 40-2 applied in viewing areas of the banknote, in which the phase-shifting layer 44-1 or 44-2 is respectively in the form of the denomination of the banknote as a number sequence "10".
  • the security elements appear structureless and unobtrusive, the coded sequence of digits is not visible. This is indicated in the right security element 40-1 of the figure by the dashed representation of the number sequence 44-1.
  • Will the banknote be 50 or, as in Fig. 8 Considering a portion of the note in front of a metallic background 52, the areas of the security element 40-2 provided with the phase-shifting layer 44-2 emerge as clearly visible colored lettering "10" due to the effects described above.
  • the verification can also be done with a non-metallic good reflector.
  • Smooth, colored plastic plates or smooth, colored glass plates are particularly well suited, but even simple, uncolored glass or plastic plates can be used.
  • the conspicuousness of the features can be further increased if a dark background is placed behind the transparent glass or plastic panels.
  • LCD display devices such as computer monitors, high-quality television sets, and displays in a variety of consumer electronics portable devices.
  • LCD display devices emit linearly polarized light, so that the security elements can also be verified by being held on or in front of an LCD display device.
  • the security elements described above use as a verification element in each case a separate, for example, metallic background, as it is found everywhere in the environment. The examination of the security element can therefore be carried out by anyone quickly and without any special effort.
  • a metallic verification element may also be arranged on the banknote itself, as in the example of US Pat Fig. 9 shown.
  • the banknote 60 of the Fig. 9 contains a security element 40 with reference to Fig. 4
  • the security strip 62 is typically provided with further security features, not shown in the figure, such as negative writing, optically variable diffraction structures, magnetic coding or the like.
  • the security element 40 and the security strip 62 are arranged mirror-symmetrically to the center line 64 of the banknote 60, so that the security element 40 comes to lie on the security strip by folding the banknote around this center line.
  • the banknote 60 can therefore be authenticated by simple folding without the need for external verification means. It is understood that the check of the banknote 60 can also take place with a security strip applied to another banknote.
  • Fig. 10 shows the basic layer structure of a security element 70, which has one or more layers of liquid-crystalline material.
  • the security element 70 includes a transparent support 72, such as a smooth, good surface quality PET film having deposited thereon one or more layers 74 of a cholesteric liquid crystalline material. Between the liquid crystal layers 74, alignment layers and / or adhesive layers 76 may be provided, which serve to align the liquid crystals in the liquid crystal layers or the connection of the individual liquid crystal layers and to compensate for unevennesses.
  • the security element 70 appears colorless and structureless. If, on the other hand, it is viewed against a strongly absorbing dark background, the liquid crystal layers produce an intensely colored impression. In addition, when viewed against a dark background and changing the viewing angle, a color shift effect becomes visible, which typically changes from a long-wave to a shorter-wave color impression, for example from green to blue, but can also change from a short-wave to a longer-wave color impression when combining several liquid crystal layers from blue or violet to red.
  • the liquid crystal layers 74 may also be present only in regions in the form of a lettering or a symbol or they may have corresponding information-containing recesses.
  • the coded Information then emerges, analogous to the situation described above, only when viewing the security element 70 in front of the predetermined absorbing background.
  • Fig. 11 shows a security element 80 according to another example.
  • the security element 80 has a transparent carrier 82, which is provided with a mark of authenticity in the form of a transparent thin-film element 84.
  • the thin-film element 84 consists of an ultrathin dielectric spacer layer 86, for example a 200 nm to 500 nm thick SiO 2 layer, and an absorber layer 88, which is penetrated by a 4 nm to 20 nm thick metal layer of chromium, iron, gold, aluminum or Titanium can exist.
  • the security element 80 appears transparent and colorless. In contrast, due to interference effects in the partial layers of the thin-film element 84, a strong color effect occurs before a strongly absorbing background. In addition, the tilting of the security element 80 results in a clearly perceptible color shift effect.
  • the dielectric spacer layer 86, or preferably the absorber layer 88 may be as shown in FIG Fig. 11 shown, even present only partially and form a lettering or other coding. The strong color effect and the color shift effect then occur only in the areas in which the absorber layer 88 is present.
  • each of the described designs requires a highly absorbing, dark background which is readily available in the ordinary environment.
  • a verification element can be arranged on the banknote itself, as with reference to FIG Fig. 12 shown.
  • the banknote 90 has a security element 92 arranged in a see-through region, which, for example, like the liquid-crystal-layer security element 70 of FIG Fig. 10 or the thin film security element 80 of Fig. 11 can be trained.
  • a dark, absorbent area 94 is arranged on the backside of the banknote 90.
  • the surface area 94 does not have to be structureless; it can contain, for example, a dark portrait or another graphic motif in dark shades.
  • the security strip 62 of the Fig. 9 can also be the area 94 equipped with other security features.
  • the see-through area of the banknote 90 shows a colorless and structureless appearance. If the banknote 90 is folded along its center line 96 and the dark area 94 is folded under the security element 92, the color effect of the security element clearly emerges. In the embodiment, the number sequence "10" appears in clear, bright colors. In addition, when the folded banknote 90 is tilted sideways, a color-shift effect occurs, the extent of which depends on the exact design of the security element 92.
  • a planar diffraction structure such as a hologram or a hologram-like diffraction structure
  • a likewise transparent embossing lacquer layer 104 is applied to a transparent carrier foil 102 and a desired diffraction structure 106 is embossed.
  • a thin-film element 108 is further applied whose layer structure, as shown in FIG Fig. 11 , an ultrathin dielectric spacer layer 110, and an absorber layer 112.
  • the relief of the diffraction structure 106 continues in this case in the thin-film element 108 vertically upward.
  • the absorber layer 112 is only partially present in this example in order to provide the security element 100 with a lettering or another coding.
  • the security element 100 In transmitted light, the security element 100 is perceived as a transparent, structureless surface, neither the color shift effect of the thin-film element 108, nor the diffraction pattern of the diffraction structure 106 noticeably appear. On the other hand, if the security element 100 is viewed in reflected light against a dark, strongly absorbing background, then the diffraction structures 106 clearly emerge in addition to the already described color effect and the color shift effect of the thin-film element 108 and enable the authenticity check of the document provided with the security element 100. Since the security element 100 must be transparent in transmitted light, it can not be readjusted by means of commercially available color-shifting films or by printing layers with color-shifting pigments.
  • the security element can also be provided with a matt structure or a refractive structure of micromirrors or microlenses.
  • the security element 120 has a transparent carrier foil 122 with a transparent embossing lacquer layer 124 and a high-indexing coating 126.
  • Embossed in the embossing lacquer layer 124 is a desired diffraction structure 128, for example a hologram or a hologram-like relief structure.
  • the security element 120 appears essentially as a colorless and featureless see-through window. In reflected light against a dark background, the diffraction structure 128 clearly emerges and thus enables the authentication of the document provided with the security element 120.
  • the security elements described so far usually show a rather inconspicuous visual impression in transmitted light and reveal new features when viewed against a predetermined background.
  • Features that are visible in transmitted light may disappear when placed on a suitable background, or information visible in transmitted light may be supplemented or otherwise altered when viewed against a suitable background. Exemplary embodiments will be described below with reference to FIGS 15 to 20 explained.
  • FIGS. 15 and 16 show a banknote 130 with a security element 132, wherein Fig. 15 the banknote in supervision and Fig. 16 a section through the banknote and the security element along the line XVI-XVI shows.
  • the security element 132 contains a transparent foil strip 134, which is provided with a black imprint 136, here in the form of the number sequence "10", and a liquid crystal layer 138 applied over it.
  • the black imprint 136 may, as in Fig. 16 , be arranged on the top of the film or on its underside.
  • a see-through area of the banknote, here a continuous opening 140, is completely covered by the film strip 134.
  • the black imprint 136 within the see-through area 140 is clearly visible, while disappearing for the viewer when placing the banknote on a dark, especially black background due to the then lack of contrast.
  • the entire opening 140 appears rather over the entire surface with a uniform characteristic glimmer, which comes from the liquid crystal layer 138.
  • FIGS. 17 and 18 Another variant is in the FIGS. 17 and 18 shown, where Fig. 17 a plan view of a banknote 150 with a security element and Fig. 18 show a section through the banknote and the security element along the line XVIII-XVIII.
  • the banknote 150 was provided in the papermaking with through holes 152 and 156 with a characteristic deckle edge which is not replicable by cutting or punching.
  • the banknote is provided with a black imprint 154 in a surrounding area of the first opening 152, while the second opening 156 connects two spaced-apart areas 158 formed by black imprints.
  • the openings 152 and 156 and the associated imprints 154 and 158 are covered by a transparent film strip 160 provided with a liquid crystal layer 162. It is understood that the black imprints 154 and 158 may be applied to the top or bottom of the film 160 instead of the banknote paper.
  • the openings 152 and 156 stand out clearly from the black imprints 154 and 158, respectively.
  • the viewing impression changes:
  • the opening 152 and the imprint 154 then appear as a full-surface square
  • the opening 156, together with the imprints 158 forms a continuous dark area.
  • all the dark areas each show the characteristic shimmering of the liquid crystal layer 162.
  • Illustrated designs can be used to display or disappear, change or supplement information encoded in a security element in the background change.
  • Exemplary shows Fig. 19 a banknote 170 having a security element 172 of FIG Fig. 17
  • the banknote 170 has four through openings 174 and five black printing areas 176, which complement each other to represent the desired information, in the embodiment of the number sequence "20".
  • the area of the openings 174 and the black pressure areas 176 is covered with a transparent, liquid-crystal-coated film 178.
  • the apertures 174 When viewed against a light background, the apertures 174 appear bright, while the black print areas 176 appear dark, so that the digit sequence is not recognizable as such. On the other hand, when viewed against a dark background, the regions 174 and 176 appear equally dark, so that the digit string "20" then clearly emerges as a whole.
  • the banknote 180 shown there has a see-through area 182 which is covered with a transparent film 184.
  • the film 184 is provided in a portion with a liquid crystal layer 186 in the form of the left half of the numeral "8".
  • the region of the banknote containing the imprint 188 is additionally overprinted with a liquid crystal layer 190.
  • the black imprint 188 can be seen on the banknote, which represents only a part of the overall information.
  • the liquid crystal region 186 is hardly or not at all visible. Only when placed on a black background, the entire figure "8" appears due to the characteristic shimmering of the liquid crystals.
  • the liquid crystalline material of the designs of the FIGS. 15 to 20 may be in the form of, for example, pigments embedded in a binder matrix.
  • the liquid-crystal layers can also be completely or partially structured and formed, for example, in the form of hatching.

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  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Credit Cards Or The Like (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Burglar Alarm Systems (AREA)
  • Polarising Elements (AREA)

Claims (11)

  1. Document de sécurité (130 ; 150), comme de papiers de sécurité, de documents de valeur et analogues, ayant un élément de sécurité (132) comportant un support transparent ou translucide (134 ; 160), caractérisé en ce que
    - le support transparent ou translucide (134; 160) est pourvu d'une caractéristique d'authenticité, qui contient une ou plusieurs couches (138 ; 162) d'un matériau cristal liquide sous forme de motifs, de caractères ou de codages et une surimpression noire (136 ; 154, 158) sous forme de motifs, de caractères ou de codages,
    - que la caractéristique d'authenticité est disposée dans ou sur une zone formant fenêtre, ou dans ou sur une ouverture continue (140 ; 152, 156) du document de sécurité,
    - que la caractéristique d'authenticité confère, en lumière réfléchie, devant un fond prédéfini et facilement accessible, qui est formé par une surface foncée fortement absorbante, une deuxième apparence optique, qui est significativement différente de la première apparence optique, plus précisément que d'une part la caractéristique d'authenticité présente en lumière réfléchie, devant la surface foncée et fortement absorbante, un effet optiquement variable, et que deuxièmement, en lumière réfléchie, devant la surface foncée, l'aspect ou la teneur en informations des motifs, des caractères ou des codages de la caractéristique d'authenticité est significativement modifiée.
  2. Document de sécurité (130 ; 150) selon la revendication 1, caractérisé en ce qu'on utilise en tant qu'effet optiquement variable un effet chromatique dépendant d'angle d'observation.
  3. Document de sécurité (130 ; 150) selon au moins l'une des revendications 1 ou 2, dans lequel la caractéristique d'authenticité contient une ou plusieurs couches d'un matériau cristal liquide cholestérique,
  4. Document de sécurité (130 ; 150) selon au moins l'une des revendications 1 à 3, ayant un élément de vérification, qui présente une zone de surface foncée fortement absorbante, et qui réalise le fond prédéfini pour l'observation de l'élément de sécurité (132) en lumière réfléchie.
  5. Document de sécurité (130 ; 150) selon la revendication 4, caractérisé en ce que la caractéristique d'authenticité et l'élément de vérification sont géométriquement disposés sur le document de sécurité de telle sorte que la caractéristique d'authenticité puisse être placée au-dessus de l'élément de vérification par cintrage ou pliage du document de sécurité.
  6. Document de sécurité (130 ; 150) selon au moins l'une des revendications 1 à 5, caractérisé en ce que le document de sécurité comprend un substrat de papier ou de plastique.
  7. Document de sécurité (130 ; 150) selon au moins l'une des revendications 1 à 6 caractérisé en ce que le document de sécurité comprend un substrat de plastique, et la caractéristique d'authenticité est appliquée sur une zone transparente ou translucide, en particulier non imprimée, du substrat de plastique.
  8. Document de sécurité (130 ; 150) selon au moins l'une des revendications 1 à 6, caractérisé en ce que le document de sécurité présente un substrat de papier, et la caractéristique d'authenticité est appliquée sur une ouverture continue (140; 152, 156) du substrat de papier.
  9. Document de sécurité (130; 150) selon au moins l'une des revendications 1 à 6, caractérisé en ce que le document de sécurité comprend un substrat de papier, et la caractéristique d'authenticité est introduite par une technique papetière dans une ouverture continue (140 ; 152, 156) du substrat de papier.
  10. Document de sécurité (130 ; 150) selon la revendication 8 ou 9, caractérisé en ce que l'ouverture continue (152, 156) est produite pendant la fabrication du papier sans arêtes vives de délimitation de sa zone marginale.
  11. Document de sécurité (130 ; 150) selon au moins l'une des revendications 1 à 10, caractérisé en ce que le document de sécurité est un papier de sécurité ou un document de valeur.
EP05770248.2A 2004-08-12 2005-08-08 Element de securite comprenant un support Active EP1778501B2 (fr)

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PL05770248T PL1778501T5 (pl) 2004-08-12 2005-08-08 Element zabezpieczający z nośnikiem

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DE102004039355A DE102004039355A1 (de) 2004-08-12 2004-08-12 Sicherheitselement und Verfahren zu seiner Herstellung
DE102004051919A DE102004051919A1 (de) 2004-10-25 2004-10-25 Sicherheitselement mit transparentem Träger
PCT/EP2005/008567 WO2006018171A2 (fr) 2004-08-12 2005-08-08 Element de securite comprenant un support

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EP1778501A2 EP1778501A2 (fr) 2007-05-02
EP1778501B1 EP1778501B1 (fr) 2013-07-31
EP1778501B2 true EP1778501B2 (fr) 2018-09-26

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EP (1) EP1778501B2 (fr)
AU (1) AU2005274464C1 (fr)
BR (1) BRPI0515003A (fr)
CA (1) CA2577208C (fr)
ES (1) ES2428360T5 (fr)
MX (1) MX2007001545A (fr)
PL (1) PL1778501T5 (fr)
RU (1) RU2381907C2 (fr)
WO (1) WO2006018171A2 (fr)

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Also Published As

Publication number Publication date
RU2381907C2 (ru) 2010-02-20
AU2005274464A1 (en) 2006-02-23
US20070246933A1 (en) 2007-10-25
BRPI0515003A (pt) 2008-07-01
WO2006018171A2 (fr) 2006-02-23
AU2005274464C1 (en) 2013-07-25
AU2005274464B2 (en) 2011-02-10
EP1778501B1 (fr) 2013-07-31
MX2007001545A (es) 2007-06-25
ES2428360T5 (es) 2019-04-16
PL1778501T5 (pl) 2019-02-28
WO2006018171A3 (fr) 2006-07-13
CA2577208A1 (fr) 2006-02-23
PL1778501T3 (pl) 2013-12-31
CA2577208C (fr) 2015-10-13
EP1778501A2 (fr) 2007-05-02
RU2007108437A (ru) 2008-09-20
ES2428360T3 (es) 2013-11-07

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