EP2435252B2 - Dispositifs de sécurité pour documents de sécurité - Google Patents

Dispositifs de sécurité pour documents de sécurité Download PDF

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Publication number
EP2435252B2
EP2435252B2 EP10726160.4A EP10726160A EP2435252B2 EP 2435252 B2 EP2435252 B2 EP 2435252B2 EP 10726160 A EP10726160 A EP 10726160A EP 2435252 B2 EP2435252 B2 EP 2435252B2
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EP
European Patent Office
Prior art keywords
indicia
security device
elements
security
substrate
Prior art date
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Application number
EP10726160.4A
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German (de)
English (en)
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EP2435252A1 (fr
EP2435252B1 (fr
Inventor
Adam Lister
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De la Rue International Ltd
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De la Rue International Ltd
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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
    • B42D25/20—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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/355—Security threads
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/48—Elements suited for physical verification, e.g. by irradiation
    • 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
    • G07D7/003—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 security elements
    • 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
    • G07D7/003—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 security elements
    • G07D7/0032—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 security elements using holograms
    • 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
    • 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
    • G07D7/121—Apparatus characterised by sensor details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/144—Security printing using fluorescent, luminescent or iridescent effects
    • B42D2033/04—
    • B42D2033/06—
    • B42D2035/34—
    • B42D2035/36—
    • 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
    • B42D25/382—Special inks absorbing or reflecting infrared light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—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 improvements in security devices for security documents.
  • Security documents including documents of value and means of identification, including banknotes, passports, identification cards, certificates and the like, are vulnerable to copying or counterfeiting.
  • Steps have already been taken to introduce optically variable features into such documentation which cannot be reproduced by a photocopier or an electronic scanner. Since the photocopying process typically involves reflecting high energy light onto an original document containing the image to be copied, one solution is to incorporate one or more features into the document which have a different perception in reflected and transmitted light. Examples of such security features include watermarks, embedded security threads, fluorescent pigments and the like.
  • This security feature comprises a liquid crystal material applied to a paper or polymer region to produce optical effects which differ when viewed in transmitted and reflected light, in particular where the paper or polymer region includes a watermark.
  • This security paper has a superficial colour code made up of at least two adjoining surface areas in the form of stripes.
  • the stripes contain different iridescent pigments and exhibit different colours when viewed from different oblique viewing angles.
  • a security feature is described in which a portion of the paper is transparentised with a transparentising resin to which an iridescent substance has been added.
  • Different colour shifts can be seen in the resulting paper as the paper is moved and examined in reflected light.
  • a colour shift can also be seen when the light, under which it is examined, changes from transmitted to reflected light, although no colour change can be seen when the viewing angle is altered under just reflected light.
  • teller assist features One class of security features used in banknotes and the like are those commonly referred to as “teller assist " features. These are features that require a simple hand held device to view them.
  • a common teller assist security feature is one based on luminescent materials. Luminescent materials are well known to those skilled in the art, and include materials having fluorescent or phosphorescent properties. The use of luminescent features on security threads has been described in EP-A-303725 , EP-A-319157 and WO-A-2006051231 , as well as in numerous other patent publications. It is also well known to use other materials that respond visibly to some form of invisible radiation, such as IR responsive, photochromic and thermochromic materials.
  • an elongate security thread there is present on either or both sides of an elongate security thread a fluorescent material.
  • the security thread comprises a plastics substrate with demetallised indicia on one side thereof, and the fluorescent material present in the plastics substrate or on the surface of said substrate.
  • UV ultraviolet
  • the demetallised indicia are highlighted in the colour of the fluorescent material.
  • a demetallised security thread is uniformly coated on one side with a layer containing one fluorescent material and uniformly coated on the other side with another fluorescent material of a different colour.
  • each side When viewed under UV light, each side reflects UV light exhibiting its own particular colour more or less uniformly, although there may be some colour mix in the demetallised areas. In transmitted light, however, the demetallised areas will be perceived as a third colour which will be a mix of the other two colours and markedly distinguishable from them.
  • a similar type of security thread is disclosed in WO-A-2006051231 .
  • the security thread described in this document comprises an opaque layer with gaps forming indicia supported by a transparent polymeric carrier film.
  • Different fluorescent materials are applied to either side of the security thread such that, in reflection, the two surfaces emit a different colour when exposed to UV light.
  • a third colour and potentially a fourth colour, depending on which side of the security thread is being viewed, is observed in the gaps in the opaque layer resulting from the combination of the two surface colours.
  • the latter two related art examples describe a security feature in which an image is created by gaps in an opaque layer which is visible in transmitted light or on exposure to UV light, with zones fluorescing in two or more colours.
  • a problem with this type of structure is that, in order to achieve multiple coloured fluorescent zones, the fluorescent material must be applied to the opaque materials.
  • the opaque material is metallic and has a characteristic sheen which, when exposed in a secure document, attracts the attention of the authenticator which is not necessarily desirable.
  • a fluorescent material is applied to the metallic layer there may be an undesirable reduction in the metallic sheen. This is of particular concern if the fluorescent material is a pigmented lacquer.
  • the superior lightfastness of pigmented fluorescent lacquers compared to organic dyes means that they are the preferred materials in security devices employed in documents, such as banknotes, where the feature must withstand a long lifetime in circulation.
  • AU 734 937 B2 is seen as the closest state of the art; discloses a security device comprising at least one at least partially light transmitting spacer layer, on one side of which are formed first indicia, said first indicia comprising a plurality of repeating elements and being formed from a material which emits a coloured visible light when excited by a form of radiation, and on an opposing side of the spacer layer is an absorbing material, which does not absorb the said radiation, the absorbing material being applied in a pattern comprising a plurality of repeating elements similar to the elements of the first indicia and having gaps between the elements.
  • the invention therefore comprises a security device comprising at least one at least partially light transmitting spacer layer, on one side of which are formed first indicia, said first indicia comprising a plurality of repeating elements and being formed from a material which emits a coloured visible light when excited by a form of radiation, and on an opposing side of the spacer layer is an absorbing material, which absorbs the said radiation but not visible light, the absorbing material being applied in a pattern comprising a plurality of repeating elements similar to the elements of the first indicia and having gaps between the elements.
  • the security device 10 of the present invention provides a directional teller assist security feature which can be checked easily under ultra violet light.
  • the security device 10 is extremely versatile as the nature of its construction means that it can be applied to security documents in a number of ways.
  • the security device 10 comprises a spacer layer 11 to one surface of which are applied indicia 12,13 and to the other surface are applied regions 14 of an absorbing material.
  • the spacer layer 11 is preferably a carrier layer of a substantially transparent polymeric substrate, such as polyethylene terephthalate (PET) or biaxially oriented polypropylene (BOPP). Where the spacer layer 11 is a carrier layer, the device 10 may be formed into an elongate security element, such as a thread or stripe, or a patch for incorporation in or application to a paper or polymer substrate to form a security substrate from which a security document can be formed. When used in this form, the thickness of the spacer layer 11 is typically in the region of 10-40 microns, and more preferably 15-20 microns. Alternatively, the spacer layer 11 may comprise a varnish or the substrate of a security document itself, e.g. a layer of BOPP film forming a polymer banknote. When used in this form the thickness of the carrier layer 11 is typically in the region of 40-120 microns and more preferably 70-90 microns.
  • a substantially transparent polymeric substrate such as polyethylene terephthalate (PET)
  • the security device 10 of the present invention can thus be incorporated into or arranged on a security document in any of the conventional formats known in the related art.
  • the spacer layer 11 is a transparent polymeric film it can be incorporated in a paper substrate using the method described in WO-A-0039391 in which one side of a transparent elongate impermeable strip is wholly exposed at one surface of the paper substrate in which it is partially embedded, and partially exposed in apertures at the other surface of the substrate.
  • the apertures formed in the paper can be used as the spacer layer 11 in the present invention.
  • the indicia 12,13 and the absorbing layer 14 can be applied to the spacer layer 11 during the production of the transparent elongate impermeable strip or after it has been incorporated into the paper substrate.
  • EP-A-723501 EP-A-724519 , WO-A-03054297 and EP-A-1398174 .
  • the indicia 12,13 are applied to one side or surface of the spacer layer 11, preferably by a suitable printing process.
  • the indicia 12, 13 are printed onto the document, preferably by means of a process such as lithography, UV cured lithography, intaglio, letterpress, flexographic printing, gravure printing or screen printing.
  • the indicia 12,13 are simply printed in one process ensuring perfect registration between elements of the indicia 12,13.
  • the indicia 12,13 and the absorbing material regions 14 comprise a plurality of substantially similar repeating elements, such as stripes, curves, pixels and the like.
  • Each set of indicia may form an image, for example in the case of the structure shown in Figure 1 each image is divided into strips (indicia) 12 and 13 respectively and then the strips are interlaced.
  • the image preferably provides identifying information and could be any one of symbols, pictorial representations and characters including alphanumerics and those from non-Roman scripts of which examples include but are not limited to, Chinese, Japanese, Sanskrit and Arabic.
  • first indicia 12 comprises a set of stripes which extend transversely from one edge of the spacer layer 11 to an opposing edge and repeat at intervals along the length of the layer 11.
  • second indicia 13 comprises a set of stripes which also extend transversely from one edge of the spacer layer 11 to an opposing edge and repeat at intervals along the length of the layer 11.
  • a stripe from the first indicia 12 is printed adjacent a stripe from the second indicia 13 with gaps 17 between each pair of stripes.
  • the indicia 12,13 are formed from two different materials, preferably inks, which are colourless in normal daylight but which each emit a different coloured light, e.g. red and green, when excited by a form of radiation, such as UV light.
  • Regions 14 of the absorbing material are also preferably applied by a suitable printing process, in register with the indicia 12,13.
  • the absorbing regions 14 comprise transverse stripes (each stripe having a width equal to the width of an adjacent pair of stripes from indicia 12,13) repeating along the length of the spacer layer 11 with gaps 18 between each stripe which match the gaps 17 between the stripes of the indicia 12,13.
  • the absorbing material must be a UV absorbing material. If the inks/materials used for the indicia 12,13 respond to another form of radiation, the absorbing material must be one which absorbs that form of radiation.
  • the UV light is now only able to reach the stripes of the second indicia 13, whilst the absorbing regions 14 prevents the UV light from reaching the stripes of the first indicia 12.
  • the fluorescent light resulting from excitation of the ink/material of second indicia 13 now becomes visible through the absorbing regions 14 and a set of green stripes 21 is observed. If the stripes 21 are arranged to form an image then a green image will be observed in this viewing condition.
  • the security device 10 thus provides a security feature which fluoresces differently depending on where the lamp 15 is held along the length of the device 10.
  • the effect of the security feature is derived from the fact that the UV (or other radiated) light is only able to pass into, and through, the spacer layer 11 at an angle which allows it to reach the elements making up either the first indicia 12 or the second indicia 13, but not both.
  • This limitation is effected by the gaps 18 between the absorbing regions 14.
  • the registration of the indicia 12,13 relative to the absorbing regions 14 is important to create clean fluorescent images.
  • the combined width of the pairs of stripes of the indicia 12,13 is therefore preferably substantially equal to the width of the stripes of the absorbing regions 14.
  • the width of each of the gaps 17,18 between the stripes is preferably substantially the same and the width of the gaps 17,18 is preferably substantially the same as the width of each of the stripes of the indicia 12, 13.
  • the indicia 12,13 and absorbing regions 14 are litho printed in stripes of 20 to 40 micron widths, which gives a good resolution to the radiating indicia.
  • the use of litho printing enables perfect back to back registration of the absorbing regions 14 and indicia 12,13, which is very difficult for a counterfeiter to achieve.
  • first and second indicia 12,13 are applied along the length of the security device 10 and third and fourth indicia are applied in a transverse direction across the width of the device 10 to give four different viewing positions.
  • the inks/materials used to form the third and fourth indicia are preferably different from those used in the first and second indicia 12,13 or they may be the same.
  • the security device 10 is formed directly on a security substrate from which a security document is to be formed, such as a polymer banknote; the spacer layer 11 being provided by a layer of transparent BOPP film which forms the base substrate of the banknote.
  • a security substrate from which a security document is to be formed
  • the spacer layer 11 being provided by a layer of transparent BOPP film which forms the base substrate of the banknote.
  • Each surface of the BOPP film is coated with a layer of white ink 16 with registered gaps which form windows 19.
  • the absorbing regions 14 and indicia 12,13 are applied to the film which provides the spacer layer 11 within the windows 19.
  • the security feature gives the same two views as described in relation to Figures 1a and 1b .
  • a UV scattering layer such as a titanium dioxide loaded varnish, is coated on the spacer layer 11 before the absorbing regions 14 are applied.
  • Figure 4a shows the absorbing regions 14 slightly offset to the vertical boundary of the spacer layer 11 and Figure 4b shows the equivalent view for the indicia 12, 13 which are parallel to the vertical boundary of the spacer 11.
  • This example could of course be reversed with the indicia 12, 13 offset to the vertical boundary of the spacer 11 and absorbing regions 14 parallel to the vertical boundary of the spacer 11.
  • both the absorbing regions 14 and the indicia 12,13 could be offset to the vertical boundary of the spacer layer 11, but in this case they would be offset by a different degree.
  • the alternating fluorescent stripes (red and green) of the indicia 12,13 appear to move along the length of the device 10 are also similar to a barber's pole.
  • the indicia 12, 13 are not registered with respect to the bands of the absorbing layer 14 and the width of the stripes of the indicia 12, 13 do not correlate to either the gaps 18 or the width of the stripes of the absorbing regions 14.
  • the width of the bands are 10 ⁇ m to 1000 ⁇ m and more preferably 10 ⁇ m to 100 ⁇ m, and the preferred range of offset angle is 0-15° and more preferably 0-5°.
  • FIG. 3b A preferred method for forming the example in Figure 3 is illustrated in Figure 3b .
  • indicia 12 in the form of stripes are applied onto one side of the spacer layer 11 and then a continuous block of the ink ultimately forming the second indicia 13 is applied so as to cover the indicia 12 and the exposed regions of the spacer 11.
  • the security device 10 will have the same optical effect as the security device viewed of Figure 1 when viewed in the direction of the arrow X as long as first indicia 12 is sufficiently opaque under UV illumination to block out the effect of indicia 13.
  • the spacer layer 11 is transparent, it may be translucent and it may be coloured. If it is translucent, however, it must not interfere with the fluorescing indicia 20, 21.
  • inks are selected for the indicia 12, 13 which are visible in normal light.
  • the inks used to form indicia 12 and 13 may appear the same colour in normal light but emit different colours when excited by a form of radiation.
  • Suitable inks include those cited in EP-A-1567358 and WO-A-9840223 .
  • Suitable UV absorbing inks include a UV barrier coating supplied by Sun Chemical with the product code NMHR-70-20669.
  • a suitable UV absorbing compound which could be applied to conventional inks is a hydroxyphenyl triazine class of UV absorber sold under the name Tinuvin ® 400 by Ciba ® .
  • the security feature may also be combined with a machine readable feature, such as a magnetic ink, and in particular a transparent magnetic ink such as those described in GB-A-2387812 and GB-A-2387813 .
  • a machine readable aspect may be provided by the introduction of separate machine-readable layers.
  • detectable materials that react to an external stimulus include but are not limited to fluorescent, phosphorescent, infrared absorbing, thermochromic, photochromic, electrochromic, conductive and piezochromic materials.
  • the substrate of the present invention may be used in combination with existing approaches for the manufacture of security elements.
  • suitable constructions include, but are not limited to, those described in WO-A-03061980 , EP-A-0516790 , WO-A-9825236 , and WO-A-9928852 .
  • Figure 5 shows a different embodiment of the security device 10 applied to a base substrate 25 to provide a secure substrate for the use in making security documents such as documents of value and means of identification, including bank notes, passports, identification cards, certificates and the like.
  • An aperture 26 is created in a secure substrate 25, for example as described in EP-A-723501 , EP-A-724519 , WO-A-03054297 and EP-A-1398174 .
  • a first polymeric substrate 11a bearing indicia 12,13 is applied to the secure substrate 25 such that it over covers the aperture.
  • a second polymeric substrate 11b bearing absorbing layer 14 (positioned on either surface of the second substrate 11b) is than applied to cover the opposite side of the aperture 26.
  • the adhesive is omitted in the aperture region.
  • the aperture 26 increases the distance between the indicia 12,13 and the absorber 14 and therefore demands on the registrational tolerances and size of the indicia is reduced.
  • the spacer layer 11 is air.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Credit Cards Or The Like (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Printing Methods (AREA)

Claims (20)

  1. Dispositif de sécurité comprenant au moins une couche d'espacement transmettant au moins partiellement la lumière, sur un côté de laquelle des premières marques sont formées, lesdites premières marques comprenant une pluralité d'éléments répétitifs et étant formées à partir d'un matériau qui émet une lumière visible colorée lorsqu'il est excité par une forme de rayonnement, et un matériau absorbant se trouve sur un côté opposé de la couche d'espacement, lequel absorbe ledit rayonnement mais pas la lumière visible, le matériau absorbant étant appliqué en un motif comprenant une pluralité d'éléments répétitifs similaires aux éléments des premières marques et comportant des espaces entre les éléments.
  2. Dispositif de sécurité selon la revendication 1, comprenant en outre des deuxièmes marques, lesdites deuxièmes marques comprenant une couche recouvrant les premières marques qui est présente dans les espaces entre les éléments répétitifs des premières marques.
  3. Dispositif de sécurité selon la revendication 1, comprenant en outre des deuxièmes marques, lesdites deuxièmes marques comprenant une pluralité d'éléments répétitifs, les éléments des premières marques alternant avec les éléments des deuxièmes marques, dans lequel la couleur de la lumière rayonnée par les premières marques est différente de celle rayonnée par les deuxièmes marques.
  4. Dispositif de sécurité selon la revendication 3, dans lequel des espaces sont prévus entre une paire d'éléments adjacents comprenant un élément de chaque marque.
  5. Dispositif de sécurité selon l'une quelconque des revendications précédentes, dans lequel les espaces entre les éléments des marques sont alignés avec les espaces entre les éléments du matériau absorbant.
  6. Dispositif de sécurité selon l'une quelconque des revendications précédentes, dans lequel les largeurs des éléments des marques sont identiques.
  7. Dispositif de sécurité selon la revendication 1, dans lequel la largeur des éléments du matériau absorbant est égale à une largeur combinée d'un élément des premières marques et d'un espace adjacent.
  8. Dispositif de sécurité selon l'une quelconque des revendications 3 à 6, dans lequel la largeur des éléments du matériau absorbant est égale à une largeur combinée d'un élément de chacune des marques.
  9. Dispositif de sécurité selon l'une quelconque des revendications précédentes, dans lequel les éléments du matériau absorbant et/ou les marques s'étendent transversalement en travers de la couche d'espacement.
  10. Dispositif de sécurité selon l'une quelconque des revendications précédentes, dans lequel les bandes du matériau absorbant sont parallèles et alignées avec les éléments de chacune des marques.
  11. Dispositif de sécurité selon l'une quelconque des revendications précédentes, dans lequel les éléments du matériau absorbant sont selon un angle par rapport aux éléments des marques, l'angle étant dans la plage 0 à 15°, et de préférence dans la plage de 0 à 5°.
  12. Dispositif de sécurité selon l'une quelconque des revendications précédentes, dans lequel les marques et le matériau absorbant sont imprimés sur la couche d'espacement.
  13. Dispositif de sécurité selon l'une quelconque des revendications précédentes, dans lequel les marques sont formées par un matériau ou une encre luminescent, ou un matériau photochromique ou thermochromique.
  14. Dispositif de sécurité selon l'une quelconque des revendications précédentes, comprenant en outre une couche de dispersion déposée sur la couche d'espacement.
  15. Dispositif de sécurité selon l'une quelconque des revendications précédentes, dans lequel la couche d'espacement comprend une couche de support, ou est réalisée par un substrat de sécurité, ou est formée par une couche de vernis.
  16. Dispositif de sécurité selon l'une quelconque des revendications précédentes, dans lequel la couche d'espacement est formée par une couche de film de polymère.
  17. Substrat de sécurité comprenant le dispositif de sécurité selon l'une quelconque des revendications précédentes et un substrat de base auquel le dispositif de sécurité est appliqué.
  18. Substrat de sécurité comprenant un substrat de base dans lequel le dispositif de sécurité selon l'une quelconque des revendications 1 à 16 a été incorporé.
  19. Substrat de sécurité comprenant un dispositif de sécurité selon l'une quelconque des revendications 1 à 15, dans lequel le substrat de sécurité est formé à partir d'un substrat de base comprenant un film transparent qui forme la couche d'espacement du dispositif de sécurité, ledit film transparent étant revêtu d'une couche d'encre blanche avec des espaces alignés qui forment des fenêtres, où le matériau absorbant et les marques sont appliqués sur le film à l'intérieur des fenêtres.
  20. Substrat de sécurité comprenant un substrat de base comportant au moins une ouverture s'étendant à travers le substrat de base, dans lequel le dispositif de sécurité selon l'une quelconque des revendications 1 à 16 recouvre l'ouverture sur l'un des côtés ou les deux du substrat de base.
EP10726160.4A 2009-05-28 2010-05-26 Dispositifs de sécurité pour documents de sécurité Active EP2435252B2 (fr)

Applications Claiming Priority (2)

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GB0909215A GB2470596B (en) 2009-05-28 2009-05-28 Improvements in Security devices for security documents
PCT/GB2010/001043 WO2010136758A1 (fr) 2009-05-28 2010-05-26 Dispositifs de sécurité pour documents de sécurité

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EP2435252A1 EP2435252A1 (fr) 2012-04-04
EP2435252B1 EP2435252B1 (fr) 2014-09-17
EP2435252B2 true EP2435252B2 (fr) 2021-09-29

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AU (1) AU2010252791C9 (fr)
CA (1) CA2763556C (fr)
GB (1) GB2470596B (fr)
MX (1) MX2011011850A (fr)
WO (1) WO2010136758A1 (fr)
ZA (1) ZA201108636B (fr)

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MX2020013863A (es) * 2018-08-13 2021-05-27 Crane & Co Inc Película microóptica sin lente.
DE102019007418A1 (de) * 2019-10-24 2021-04-29 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement und Wertdokument mit visuell und maschinell prüfbaren Sicherheitsmerkmalen, die in räumlicher Beziehung zueinander stehen
FR3112099B1 (fr) * 2020-07-03 2022-07-22 Idemia France Procédé de fabrication d’un dispositif de sécurité à variabilité optique et dispositif de sécurité associé
DE102021002495A1 (de) * 2021-05-11 2022-11-17 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement mit Lumineszenzmerkmal und Datenträger mit einem solchen Sicherheitselement

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AU2010252791B2 (en) 2014-01-23
GB2470596B (en) 2011-07-27
GB2470596A (en) 2010-12-01
MX2011011850A (es) 2011-12-08
WO2010136758A1 (fr) 2010-12-02
AU2010252791C1 (en) 2015-07-23
EP2435252A1 (fr) 2012-04-04
EP2435252B1 (fr) 2014-09-17
AU2010252791C9 (en) 2015-11-19
AU2010252791A1 (en) 2011-11-17
CA2763556A1 (fr) 2010-12-02
CA2763556C (fr) 2015-03-10
GB0909215D0 (en) 2009-07-15
ZA201108636B (en) 2012-07-25

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