WO2012153116A1 - Dispositif de sécurité perfectionné - Google Patents

Dispositif de sécurité perfectionné Download PDF

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Publication number
WO2012153116A1
WO2012153116A1 PCT/GB2012/050996 GB2012050996W WO2012153116A1 WO 2012153116 A1 WO2012153116 A1 WO 2012153116A1 GB 2012050996 W GB2012050996 W GB 2012050996W WO 2012153116 A1 WO2012153116 A1 WO 2012153116A1
Authority
WO
WIPO (PCT)
Prior art keywords
security
security device
paper
light
flexible material
Prior art date
Application number
PCT/GB2012/050996
Other languages
English (en)
Inventor
Gary D SPINKS
Original Assignee
D W Spinks (Embossing) Limited
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
Priority claimed from GBGB1112137.3A external-priority patent/GB201112137D0/en
Priority claimed from GBGB1112139.9A external-priority patent/GB201112139D0/en
Application filed by D W Spinks (Embossing) Limited filed Critical D W Spinks (Embossing) Limited
Publication of WO2012153116A1 publication Critical patent/WO2012153116A1/fr

Links

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
    • B42D25/346—Perforations
    • 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
    • B42D25/36—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
    • 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
    • D21H21/42—Ribbons or strips
    • 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
    • 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
    • B42D25/355—Security threads

Definitions

  • the present invention concerns security features for inclusion in security papers. More particularly, the invention concerns a security device for inclusion in pulp from which a security paper is manufactured, a security paper including such a security device, and a method of manufacturing a security paper including such a security device .
  • security documents include banknotes, passports, driving licences, bank cards, and certificates of various kinds.
  • security features included in such documents include chips containing biometric or other data, printed features, such as patterns of lines that create interference patterns when copied, and various features incorporated into the security paper from which the security document is made.
  • security features included in security papers are holograms, foils, planchettes, watermarks, microdots, and metallic threads .
  • Metallic security threads are typically made from a transparent film coated with a metal layer, such as vacuum deposited aluminium on polyester. When such threads are embedded in a security paper the thread is not visible in reflected light but is immediately apparent as a dark line when the security document is viewed in transmitted light. This optically variable effect cannot be simulated by printing a line on the paper, so a security thread provides a simple but effective anti-counterfeiting measure.
  • threads into a security paper such that some portions of the thread are embedded shallowly enough that they are visible at a surface of the paper whilst other portions are embedded deeply enough within the paper that they are not visible. Thus the thread appears as a broken line when the security document is viewed in reflected light, and as a complete unbroken dark line when the document is viewed in transmitted light.
  • windowed threads Such partially embedded security threads are known in the art as windowed threads .
  • regions of the thread may be demetallised using, for example, a resist and etch technique. These regions can be in the form of text or symbols, so that when the security paper is viewed in transmitted light the text appears bright against the dark background of the metallised areas of the thread. This "clear text" technique is described in
  • Another security feature that can be incorporated into a security document is a "colour switch" effect, whereby a region of the security document appears a different colour when viewed in transmitted UV light as compared with reflected UV light.
  • This technique is described in GB2300596 (Portals) .
  • the effect is created by sandwiching a UV absorbent layer between two fluorescent layers that emit differently coloured visible light when exposed to incident UV light.
  • visible light In order for the effect to be produced, visible light must be able to be transmitted through the entire sandwich structure, which means that it cannot be produced on a metallised security thread and therefore that it has hitherto been impossible to create a thread displaying both clear text and colour switch effects.
  • the present invention seeks to provide an improved security device for incorporation into a security paper, as well as an improved method of manufacturing a security paper. Alternatively or additionally, the present invention seeks to provide a security device arranged to
  • the present invention provides, according to a first aspect, a security device for incorporation into a security paper, the device comprising
  • planar flexible material having a first surface and a second surface
  • the perforation in the flexible material, the perforation extending between the first and second surfaces such that the perforation defines a hole extending between the two surfaces, wherein in at least one surface of the device comprises at least one region which appears a first colour when viewed under a first set of viewing conditions and a second colour when viewed under a different set of viewing conditions, the second colour being different to the first colour.
  • a perforation is a hole extending from the first surface to the second surface of the material. This enables light to pass from one side of the device to the other side of the device through the hole. It may be that the security device is a security thread.
  • the at least one region may encompass the at least one perforation.
  • Embodiments of the invention in which the at least one region encompasses the at least one perforation have the advantage that the perforation stands out clearly against the surrounding region because the perforated area does not change colour between the first and second sets of viewing conditions whereas the surrounding region does.
  • background light can pass straight through the perforation meaning that it appears brighter than the surrounding region when the device is viewed in front of a light source.
  • a perforation can be easily created by, for example, mechanical punching, in any substrate material including composite or structured materials. This consequently means that a windowed or clear text effect can be created in any substrate having a degree of opacity.
  • Particular advantage comes from using the perforations to create a windowed or clear text effect in a substrate which has special optical properties, such as a holographic, colour shift or colour switch film, since this is not possible with conventional metallisation techniques.
  • the flexible material may have a composite structure.
  • the flexible material may comprise a plurality of layers. It will be appreciated that where the flexible material comprises a plurality of layers, the perforation extends through all of these layers. Two or more of the plurality of layers may comprise different materials. Alternatively the flexible material may comprise a single layer.
  • the flexible material may be semi-opaque. If the flexible material comprises a plurality of layers, one or more of the
  • the plurality of layers may be semi-opaque.
  • One or more of the plurality of layers may be transparent.
  • the flexible material is semi-opaque, the perforations will appear brighter than the surrounding material when the device is viewed in transmitted light, producing a clear text effect.
  • the at least one perforation may be any shape.
  • the at least one perforation may be in the form of a text character.
  • the at least one perforation may be in the form of a currency symbol .
  • the at least one perforation may be in the form of a geometric shape.
  • the flexible material may comprise at least two light- emitting components and at least one light -absorbing
  • the security device includes exactly two light- emitting components and one light-absorbing component between the two light-emitting components.
  • the light-absorbing component is an ultraviolet-light-absorbing component, in which case preferably the light -emitting components are fluorescent components.
  • each of the fluorescent components fluoresces in ultraviolet light at a different visible colour.
  • the light absorbent component may be an infrared-absorbent component, in which case preferably the light -emitting components emit light via the anti-Stokes effect.
  • each of the light emitting components emit light of a different visible colour when illuminated with infrared light.
  • the device may be arranged such that the first set of viewing conditions comprises viewing in transmitted
  • ultraviolet light and the second set of viewing conditions comprises viewing in reflected ultraviolet light.
  • this arrangement results in a colour switch effect when the device is viewed alternately in transmitted and then reflected ultraviolet light.
  • the flexible material may comprise a colour shift film.
  • colour shift film is used here to refer to any film which, when viewed in reflected visible light, changes colour when the viewing angle is altered.
  • the colour shift film may be transparent.
  • the device may be arranged such that the first set of viewing conditions comprises viewing in reflected visible light at a first viewing angle and the second set of viewing conditions comprises viewing in reflected visible light at a second viewing angle, the second viewing angle being different from the first viewing angle.
  • This "colour shift” effect will only occur in the at least one region, and will not occur within the perforation, meaning that the perforation will stand out clearly against the surrounding region at both the first and second viewing angles and during movement from the first to the second angle .
  • the security device may comprise a bonding layer on at least part of one or both surfaces of the flexible material .
  • the bonding layer may be arranged such that hydrogen bonds form between the bonding layer and the security paper during a process of forming the security paper.
  • the bonding layer may be a fibrous layer.
  • providing a bonding layer which forms hydrogen bonds with the paper substrate enables the device to adhere strongly to the security paper in which it is embedded without the need for an adhesive coating on the device .
  • the bonding layer is opaque.
  • the bonding layer may be translucent.
  • the bonding layer may be
  • the bonding layer is invisible when the device is incorporated into a security paper.
  • the bonding layer may be a textile fabric layer.
  • bonding layer is a paper layer.
  • the bonding layer may comprise tissue paper.
  • the bonding layer may comprise paper having a basis weight of between 10 and 45 grams per square metre.
  • the bonding layer comprises paper having a basis weight of between 20 and 30 grams per square metre.
  • the bonding layer may comprise paper having a basis weight of 25 grams per square metre .
  • the bonding layer may comprise paper having a high wet tensile strength.
  • the bonding layer comprises paper having a wet tensile strength of at least 4 Newtons per 15mm. It may comprise paper having a wet tensile strength of at least 5 Newtons per 15mm.
  • the bonding layer may comprise paper having high porosity. It may comprise paper having a porosity of at least
  • the bonding layer may include one or more windows.
  • the one or more windows may be any shape or size. Preferably the one or more windows are rectangular, in which case a conventional windowed thread effect may result when the device is incorporated into a security paper.
  • the one or more second regions may be circular. They may be star- shaped. They may be of an irregular shape.
  • the location of the at least one perforation may be arranged to coincide with the location of a window.
  • this has the effect of ensuring that the perforation will be visible at the surface of a security document into which the device is incorporated .
  • the width of the bonding layer or layers may be greater than the rest of the flexible material .
  • this creates a significantly stronger bond between the security device and a security paper into which it is embedded than if the bonding layer and the rest of the flexible material are the same width. It is believed that the greater surface area of the bonding layer allows more hydrogen bonds to form between the bonding layer and the security paper. This results in the further advantage that a wider device is possible .
  • the device may further comprise an adhesive layer between the substrate and the bonding layer.
  • the security device may comprise a hydrophobic coating on at least part of one or both surfaces of the flexible material.
  • the hydrophobic coating may be a varnish.
  • the hydrophobic coating may be a gel .
  • the hydrophobic coating is a UV varnish. Regions of the device which carry a hydrophobic coating will always remain exposed at the surface of the security paper when the device is incorporated into such a security paper.
  • the invention further provides, according to a second aspect, a method of making a security device for
  • the method may further comprise, prior to the step of creating a perforation, the step of applying at least one ultraviolet absorbing coating and at least two fluorescent coatings to the flexible material, such that the ultraviolet absorbing coating is arranged between the two fluorescent coatings .
  • the invention further provides, according to a third aspect, a security paper including a security device as described above.
  • the invention further provides, according to a fourth aspect, a method of making a security paper incorporating a security device, the method comprising the steps of
  • Figure la is a cross section of an example security device according to a first embodiment of the invention.
  • Figure lb is a plan view of an example security device according to a first embodiment of the invention.
  • Figure 2 is a cross section of an example security device according to a second embodiment of the invention.
  • Figs, la and lb show an example of a security device 1 according to a first example embodiment of the invention, in the form of a security thread.
  • the thread is composed of a thin strip of a commercially available transparent colour shift film 10, such as 3M Radiant Light film.
  • a commercially available transparent colour shift film 10 such as 3M Radiant Light film.
  • the dimensions of the strip 10 are 2 mm x 100 mm.
  • the structure of colour shift film is such that it appears one colour when viewed in visible light at a first angle, and a different colour when tilted to be viewed at a second angle .
  • the colour shift film 10 has two surfaces 12 and 14. One face 14 of the film 10 is coated with a first
  • the fluorescent coating 11 is a layer of titanium dioxide.
  • the first and second fluorescent coatings fluoresce under UV
  • the fluorescent illumination consist of a fluorescent pigment or dye incorporated into a binder material .
  • the coatings are applied to the substrate by a contact printing process.
  • the first and second fluorescent coatings 11, 13 fluoresce at different wavelengths, so that the first fluorescent coating 11 appears green in UV light whereas the second fluorescent coating 15 appears red in UV light.
  • the coatings 11, 13 are substantially transparent in visible light.
  • the ultraviolet light absorbing layer 15, on the other hand, is semi-opaque in visible light.
  • a strip of opaque tissue paper 17 slightly wider than the substrate has been glued to each surface of the thread 1 to ensure good bonding when the thread is incorporated into a security paper.
  • the optimum paper is a high porosity, high wet strength tissue paper with a nominal basis weight of 25 grams per square metre.
  • the properties of the paper are listed below. These properties have been developed with the intention of providing a device that works well but are only one example. Other papers could be used.
  • Fig. lb shows that when a surface of the device is viewed in plan, there is a first region indicated by closely spaced hatching which is covered by the paper strip 17, and a second region, indicated by widely spaced hatching, which is not covered by the paper strip 17 because this second region corresponds with one of the pre-cut windows in the paper strip.
  • the paper layers 17 are wider than the rest of the thread 10, which results in the creation of two edge regions 18 which are composed entirely of paper. The presence of these edge regions 18 further improves the adhesion between the security thread and the base paper.
  • perforations 19 are cut through the paper-free regions of the thread.
  • the perforations 19 are in the form of text. UV light which is incident on surface 12 of thread 1 causes the coating 11 to fluoresce. The ultraviolet
  • UV light which is incident on surface 16 of thread 1 causes the coating 13 to fluoresce, producing visible green light.
  • the ultraviolet absorbing layer 15 prevents the UV light from reaching coating 11. This has the effect that surface 16 appears green in reflected UV light and surface 12 appears green in transmitted UV light. Thus if a viewer looks at the same surface of the thread in reflected and then in
  • the thread 1 When the thread 1 is incorporated into a security paper, which is done as part of the papermaking process, using a standard Fourdrinier machine, the paper-free regions of each surface of the thread will remain visible at the surface of the security paper, creating a windowed thread effect with the perforated regions being located in the windows.
  • the perforations 19 appear as unchanging areas against a colour shifting background.
  • perforations 19 will appear as bright areas against the darker background created by the semi-opaque material of the thread.
  • a traditional clear text effect is therefore produced by the thread 1, but against a background which includes dynamic optical effects rather than a plain
  • the perforations When the security paper including thread 1 is viewed in UV light, the perforations will appear dark against a bright coloured background which changes from green to red (or vice versa, depending on which surface is being viewed) as the paper is alternately viewed in reflected and transmitted UV light.
  • the thread 1 also produces a traditional UV colour switch effect.
  • Fig. 2 shows an example security device in the form of a security thread 2 according to a second example embodiment of the invention.
  • the thread 2 is composed of a thin strip of transparent polyester substrate 20.
  • the substrate 20 contains an ultraviolet light absorber, such as titanium dioxide, which is introduced into the polyester during manufacture of the substrate.
  • the presence of the absorber causes the substrate 20 to absorb significantly more light in the ultraviolet spectral region than it would if it did not contain the absorber.
  • the presence of the absorber also causes the substrate 20 to be semi-opaque in visible light.
  • One face 22 of the substrate is coated with a
  • fluorescent coating 23 of a standard composition like that described in relation to the first embodiment .
  • the opposite face 24 of the substrate is coated with a second fluorescent coating 25 of a similar composition to the first coating 23, but it fluoresces at a different wavelength to the wavelength at which the first coating 23 fluoresces.
  • the coatings 23, 25 are substantially transparent in visible light .
  • the thread 2 of the second embodiment has an opaque paper strip 27, which is slightly wider than the substrate 20, applied to each face .
  • a hydrophobic coating 28 is printed or coated onto the paper free regions of the thread, helping to ensure that these remain at the surface of the security paper when the thread is incorporated into such a paper.
  • This coating is a UV varnish with a low surface energy and has properties that prevent paper fibres from forming on its surface. The presence of the coating in these regions means that when the security thread is incorporated into a security paper using a Fourdrinier papermaking machine, no paper fibres can form on the paper-free regions.
  • perforations 29 are cut through the paper-free regions of the thread.
  • thread 2 When incorporated into a security document, thread 2 will create the UV colour switch and clear text effects described above in relation to the first embodiment. It will not, however, produce a visible colour shift effect because it does not contain a colour shift film. Thus, for example, when a security paper containing thread 2 is viewed in transmitted visible light, the perforations 29 will appear as light areas against the slightly darker background of the semi-opaque thread substrate.
  • a security device according to the present invention such as any of the security threads described above, can be incorporated into a security paper, for example a banknote, using a standard Fourdrinier papermaking machine by simply adding the thread from a bobbin to the pulp in the
  • the paper layer and, if present, the hydrophobic coating ensures that the paper- free regions of the thread will end up at the surface of the finished security paper, whilst certain other regions (i.e. those having a paper layer) will be firmly embedded within the finished security paper.
  • security devices in the form of threads.
  • the invention may also be applied to other security devices suitable for inclusion in a pulp from which a security paper is to be made, for example planchettes.
  • the security device may be used on or in security papers other than banknotes, for example it may be used on or in cheques, ID cards, passports, vouchers, security labels and the like.
  • the perforations need not be in the form of text, for example they may be in the form of currency symbols or geometrical shapes. Any number and combination of
  • fluorescent pigments may be used.
  • the fluorescent coatings may be activated by incident light other than UV light.
  • the fluorescent coatings may be replaced by coatings which emit light via the anti-Stokes effect when illuminated with infrared light. In this case it will be understood that the thread needs to contain an infrared absorber rather than an ultraviolet absorber.
  • the thread need not include paper layers.
  • a thread without paper layers could be inserted into a security document with a Fourdrinier machine having a special dandy roller designed to insert conventional windowed threads.

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  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un dispositif de sécurité (1) destiné à être intégré dans une pâte servant à la fabrication d'un papier de sécurité et un procédé de fabrication d'un tel dispositif de sécurité. Ce dispositif comprend une partie constituée d'un matériau souple plat (10) comportant une première surface (12) et une seconde surface (16), et au moins une perforation (18) dans le matériau souple, la perforation s'étendant entre les première et seconde surfaces. La ou les surfaces du dispositif comprennent au moins une région qui paraît être d'une première couleur lorsqu'on la regarde dans un premier ensemble de conditions d'observation et d'une seconde couleur lorsqu'on la regarde dans un ensemble de conditions d'observation différent, la seconde couleur étant différente de la première couleur.
PCT/GB2012/050996 2011-05-06 2012-05-04 Dispositif de sécurité perfectionné WO2012153116A1 (fr)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
EP11165077.6 2011-05-06
EP11165072 2011-05-06
EP11165072.7 2011-05-06
EP11165077 2011-05-06
GB1112139.9 2011-07-14
GBGB1112137.3A GB201112137D0 (en) 2011-07-14 2011-07-14 Improved security thread
GBGB1112139.9A GB201112139D0 (en) 2011-07-14 2011-07-14 Security device
GB1112137.3 2011-07-14
EP11186960 2011-10-27
EP11186960.8 2011-10-27

Publications (1)

Publication Number Publication Date
WO2012153116A1 true WO2012153116A1 (fr) 2012-11-15

Family

ID=46052828

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2012/050996 WO2012153116A1 (fr) 2011-05-06 2012-05-04 Dispositif de sécurité perfectionné

Country Status (1)

Country Link
WO (1) WO2012153116A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016063050A1 (fr) * 2014-10-23 2016-04-28 De La Rue International Limited Améliorations de papiers et documents de sécurité

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0319157A2 (fr) 1987-12-04 1989-06-07 Portals Limited Papier de sûreté pour des billets de banque et produits similaires
GB2300596A (en) 1995-05-10 1996-11-13 Portals Ltd Fluorescent security feature for cheques and banknotes
WO2003059644A1 (fr) * 2002-01-18 2003-07-24 Giesecke & Devrient Gmbh Element de securite a effet chatoyant et proprietes magnetiques, objet comportant ledit element de securite et procede de fabrication dudit element de securite et dudit objet
US20070090196A1 (en) * 2004-02-11 2007-04-26 Arjowiggins Security Relatively small security elements, production method thereof, sheet and security document comprising same
GB2433470A (en) * 2005-12-20 2007-06-27 Rue De Int Ltd Manufacturing a fibrous security substrate incorporating a fibrous tape.
EP2028017A2 (fr) * 2007-08-23 2009-02-25 De La Rue International Limited Dispositifs de sécurité pour substrats sécurisés
US20100164217A1 (en) * 2007-07-03 2010-07-01 Giesecke & Devrient Gmbh Security Feature and Method for Manufacturing the Same
WO2011039199A1 (fr) * 2009-09-30 2011-04-07 D W Spinks (Embossing) Limited Elément de sécurité destiné à être inséré dans un papier de sécurité

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0319157A2 (fr) 1987-12-04 1989-06-07 Portals Limited Papier de sûreté pour des billets de banque et produits similaires
GB2300596A (en) 1995-05-10 1996-11-13 Portals Ltd Fluorescent security feature for cheques and banknotes
WO2003059644A1 (fr) * 2002-01-18 2003-07-24 Giesecke & Devrient Gmbh Element de securite a effet chatoyant et proprietes magnetiques, objet comportant ledit element de securite et procede de fabrication dudit element de securite et dudit objet
US20070090196A1 (en) * 2004-02-11 2007-04-26 Arjowiggins Security Relatively small security elements, production method thereof, sheet and security document comprising same
GB2433470A (en) * 2005-12-20 2007-06-27 Rue De Int Ltd Manufacturing a fibrous security substrate incorporating a fibrous tape.
US20100164217A1 (en) * 2007-07-03 2010-07-01 Giesecke & Devrient Gmbh Security Feature and Method for Manufacturing the Same
EP2028017A2 (fr) * 2007-08-23 2009-02-25 De La Rue International Limited Dispositifs de sécurité pour substrats sécurisés
WO2011039199A1 (fr) * 2009-09-30 2011-04-07 D W Spinks (Embossing) Limited Elément de sécurité destiné à être inséré dans un papier de sécurité

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016063050A1 (fr) * 2014-10-23 2016-04-28 De La Rue International Limited Améliorations de papiers et documents de sécurité

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