WO2009098435A2 - Substrat pour document de sécurité - Google Patents

Substrat pour document de sécurité Download PDF

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Publication number
WO2009098435A2
WO2009098435A2 PCT/GB2009/000242 GB2009000242W WO2009098435A2 WO 2009098435 A2 WO2009098435 A2 WO 2009098435A2 GB 2009000242 W GB2009000242 W GB 2009000242W WO 2009098435 A2 WO2009098435 A2 WO 2009098435A2
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
transparent region
transparent
substrate according
document
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/GB2009/000242
Other languages
English (en)
Other versions
WO2009098435A3 (fr
Inventor
Stuart William Rost
John Philip Winchcombe
Christopher John Eastell
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.)
De la Rue International Ltd
Original Assignee
De la Rue International Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by De la Rue International Ltd filed Critical De la Rue International Ltd
Priority to MX2010007905A priority Critical patent/MX2010007905A/es
Priority to AU2009211238A priority patent/AU2009211238A1/en
Priority to EP09708531A priority patent/EP2262646A2/fr
Priority to CA2715115A priority patent/CA2715115A1/fr
Publication of WO2009098435A2 publication Critical patent/WO2009098435A2/fr
Publication of WO2009098435A3 publication Critical patent/WO2009098435A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K39/00—Feeding or drinking appliances for poultry or other birds
    • A01K39/01—Feeding devices
    • 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
    • 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
    • B42D2033/04—
    • B42D2033/22—

Definitions

  • the invention relates to a security document and a substrate for a security document.
  • a variety of security devices have been proposed in the past to prevent security documents from being counterfeited or fraudulently produced.
  • a particularly useful security device is one which is readily verifiable by a user but which is difficult to produce.
  • One example of such a security device is an enclosed clear transparent region in an otherwise opaque substrate.
  • WO8300659 describes a polymer banknote formed from a transparent substrate comprising an opacifying coating on both sides of the substrate. The opacifying coating is omitted in localised regions on both sides of the substrate to form a transparent window region.
  • Other examples of a security documents with a transparent window are described in WO-A-2008/003949 and WO-A-2006/133512.
  • WO0039391 describes a method of making a transparent aperture in a paper substrate. This is achieved by blinding one or more selected areas of a porous support surface, depositing a first layer of paper fibres onto the porous support surface around the blinded areas, bringing an impermeable elongate security thread to lie in contact with the blinded areas of the support surface such that at least the edges of the elongate security thread overlie the deposited layer, and depositing a further layer of paper fibres over the first layer and the impermeable strip to securely embed the edges of the elongate security thread within the paper.
  • the blinded areas are impermeable, which substantially prevents the deposition of fibres thereon before the elongate security thread is laid thereover.
  • substantially no paper fibres are deposited on one side of the elongate security thread in a central region between edges of the elongate security thread to thereby expose a continuous area of the elongate security thread at a first surface of the paper.
  • a plurality of discrete translucent or transparent windows is formed in a second surface of the paper in which the elongate security thread is exposed.
  • An alternative method for forming a transparent region in a paper document is to apply a transparent film in the form of a patch or a strip over a hole formed in the document either during or post manufacture of the substrate.
  • Such approaches have been described within the prior art for example EP723501 , EP724519 and The use of an enclosed transparent region prevents the generation of a
  • US-A-5,783,275 describes the incorporation of security threads into security documents such as banknotes. These security threads are provided with holographic or other optically variable effects or alternatively with structures having a metallic lustre or with a security print. These are relatively complex structures.
  • a transparent security thread is described in US-A- 2003/0082348. This is formed by taking an opaque, paper document and transparentising a thin line extending across the document so as to form a thin, thread like feature.
  • This simulated security thread has a width typically in the range of 0.38-1.58mm and a transparency such that when the document is held to the light, the thread can be seen.
  • EP-A-0930174 describes a security document incorporating a plastic thread or strip which is translucent, the translucent part possessing visually and/or mechanically readable signs or patterns.
  • EP-A-0536855 describes a security paper incorporating a plastic strip which is embedded within the paper and which is not readily visible under reflective illumination to the unaided eye.
  • GB-A-1357489 describes a banknote or other paper sheet including an opaque thread or strip.
  • a polymer substrate for a security document has at least one elongate transparent region extending through a more opaque area of the substrate and completely or almost completely between spaced locations on the boundary of the substrate, , wherein the width of the transparent region is at least 2mm and the transparent region has an optical density not exceeding 0.3.
  • a transparent region or strip of this type enables the transparent region to be easily detected by transmitted light detectors on cash handling equipment.
  • the fact that the transparent strip traverses completely or almost completely across the substrate, for example the full document height, or alternatively the full document width, means that the position of the detector is not critical.
  • the transmitted light detector can be set up such that the document is only deemed authentic when the width of the transmitted light area corresponds to either the full width or full height of the transparent region.
  • width of the elongate region is at least 2mm while requiring that it extends through a more opaque area of the substrate means that an authentication machine will detect a distinct flash of light when the substrate passes across a light source. This is further enhanced by the high degree of transparency required.
  • the transparent region may be spaced from the boundaries by up to 10mm.
  • an enclosed clear transparent region in an opaque substrate is susceptible to counterfeiting, for example by punching a hole in an opaque substrate and then placing a clear transparent polymeric film over the hole.
  • the at least one transparent region extends completely between the spaced locations on the boundary of the substrate.
  • a particularly preferred form of transparent region is rectilinear, such a region extending between opposite edges of the document.
  • other forms of transparent region are envisaged including stepped, curved, spiral and the like.
  • polymer we mean a synthetic plastics material including a co-extrusion or lamination of such materials.
  • a transparent region of the document is defined as one whose optical density when measured on a transmission densitometer, with an aperture area equivalent to that of a circle with a 1 mm diameter, is preferably less than 0.3, more preferably less than 0.2 and even more preferably less than 0.1 as measured for example on a MacBeth TD932.
  • a “more opaque area” we mean that the area of the substrate on either side of the transparent region has an optical density which is at least 0.15 units greater than the optical density of the transparent region and preferably 0.3 units greater than the transparent region and even more preferably 0.5 units greater than the transparent region.
  • the more opaque area may have an optical density of 0.25, preferably 0.4 and more preferably 0.6.
  • a single transparent region is provided.
  • more than one transparent region could be provided and this allows additional information to be defined by the transparent regions. For example, spacing between regions and/or their widths could be used to form a code. Where there is more than one transparent region present the transparency of the individual regions may be different. Alternatively the transparency across an individual region may be varied.
  • Figure 1 is a plan view of a first example
  • Figure 2 is a schematic cross-section of the example shown in Figure 1 ;
  • Figures 3-9 and 11 are plan views similar to Figure 1 but of further examples; and
  • Figure 10 is a schematic diagram of an example of apparatus for carrying out the method.
  • Figures 1 and 2 show an example of a security document of the current invention in plan-view and cross-section respectively.
  • the security document comprises a transparent polymeric substrate 1 onto which is applied a pigmented coating 2 which may be opaque.
  • the pigmented coating 2 can be applied by any conventional printing process, but typically this is a gravure printing process.
  • the pigmented coating may comprise a single layer applied to one side of the transparent substrate or, as shown, one or more layers 2 applied to both sides of the transparent substrate.
  • the pigmented coating is omitted in one region of the document, on both sides, to provide a continuous transparent strip 3 which traverses the full height of the secure document orthogonal to the opposite, parallel edges.
  • the pigmented coating(s) 2 of the secure document such as a banknote, then undergoes further standard security printing processes including one or more of the following; wet or dry lithographic printing, intaglio printing, letterpress printing, flexographic printing, screen-printing, and/or gravure printing as well as being provided with identifying indicia etc as is conventional.
  • further standard security printing processes including one or more of the following; wet or dry lithographic printing, intaglio printing, letterpress printing, flexographic printing, screen-printing, and/or gravure printing as well as being provided with identifying indicia etc as is conventional.
  • the resulting print is not shown in Figure 1.
  • the transparent strip 3 enables the transparent region to be easily detected by transmitted light detectors on cash handling equipment.
  • An example in schematic form of suitable cash handling equipment is show in Figure 10.
  • a radiation source 30, such as an optical source is located above a document feed path indicated by an arrow 32 in Figure 10.
  • a radiation sensor 34 such as a CCD array and both the source 30 and sensor 34 are connected to a processor 36.
  • a document 38 similar to the document shown in Figures 1 and 2 is fed in a conventional manner between the source 30 and sensor 34, initially the pigmented coating 2 will substantially attenuate the intensity of the light passing through the document.
  • the length of the sensor 34 in a direction perpendicular to the direction of movement along the transport path 32 will be at least equal to the length of the transparent region 3.
  • a 'Hash" of transmitted light will be detected by the sensor 34 equivalent to the width of the transparent strip 3.
  • the length of time the "flash" of transmitted light is detected for will correspond to the width of the continuous transparent region 3.
  • the width of the transparent strip 3 can be varied between families of secure documents to provide a method of coding. A more complex coding system can be introduced into the document by providing multiple continuous transparent strips which can either be of the same width or different widths (as described below).
  • Figures 3 and 4 show alternative configurations for the continuous transparent region.
  • a continuous transparent strip 5 traverses the full width of the secure document 6 orthogonally to the opposite, short parallel edges.
  • the continuous transparent strip does not have to be linear and a stepped transparent region 7 which traverses the full height of the secure document is illustrated in Figure 4.
  • the continuous strip can be curved.
  • Figure 5a shows a further alternative configuration for the continuous transparent region in which the transparent region extends between adjacent edges rather than parallel edges.
  • the document comprises one continuous transparent strip 20 extending between adjacent edges.
  • the document comprises two continuous transparent strips 20,21 between adjacent edges positioned in opposite corners of the note.
  • the advantage of the configuration in Figure 5b is that there will always be at least one 'Hash" of transmitted light irrespective of the position of the detectors in relation to the height of the note.
  • Figure 5c shows a further design alternative where a continuous transparent strip runs diagonally between opposed corners.
  • the advantage of this design is that a flash will be seen by a detector mounted in any position on either/both short edge and long edge feed machines.
  • Figure 6 shows a further design alternative where a continuous transparent strip 8 is integrated into the design of the secure document 10.
  • Figure 6 illustrates an example where the transparent strip 8 comprises a first continuous transparent region 9 formed by omitting the pigmented coating on a transparent polymeric substrate as referred with reference to Figures 1 and 2.
  • the strip extends completely between the opposite long edges of the document 10.
  • the optical density in this region will be less than 0.1.
  • This region will typically have an optical density of between 0.1 and 0.3. In this example the optical density of region 11 is 0.25.
  • variable transparent regions of different optical densities increases the complexity of the device and provides an advantage in machine readability. For example if the document in Figure 6 is passed through a transmitted light detector short edge first then a first "flash" of transmitted light will be detected of a particular intensity associated with region 11 with an optical density of 0.25. The length of time for which this first "flash" of transmitted light is detected will correspond to the width of the transparent region 11. If the note continues to pass through the detector a second flash of transmitted light is detected corresponding to the width of the transparent region 9 with a optical density of 0.1. The intensity of the transmitted light will be greater for region 9 compared to region 11 due to region 9 having a lower optical density.
  • the secure document also comprises a fully enclosed transparent region 12, as well as continuous transparent region 8 which extends across the full height of the document.
  • a single transparent region 25 is formed by reducing the number of pigmented coatings in that region rather than fully exposing the transparent polymeric substrate 1.
  • the transparent region 25 only has one layer of pigmented coating 2A while the remainder of the document has four layers 2A-2D.
  • the coating in the transparent regions must be sufficiently light transmitting that the optical density of the region does not exceed 0.3.
  • Figure 8 illustrates an example where the security document comprises multiple transparent strips 40-42 which can be used to form a code.
  • the strips 40-42 are shown as dark lines for ease of understanding the drawing. In this case, the code is formed firstly by the fact that there are three strips 40-42 and secondly because the distance between adjacent strips 40;41 and 41 ;42 is different.
  • Figure 9 illustrates a further example where multiple strips 43-45 are provided of different widths (as well as with different spacings) and again illustrated as dark lines.
  • a series of banknotes can comprise different numbers of strips to indicate denomination.
  • the transmitted light detector 34 the number of 'Hashes" of transmitted light which are of full note width will determine its denomination.
  • both the number of "flashes” and the duration of each "flash” will determine the denomination.
  • other variations are possible such as varying widths and same spacing.
  • the transparent continuous strip can be provided with an optical structure which provides a scattering or diffusing screen. This will reduce the level of transmitted light below that observed for a fully transparent substrate or a void, but the level of transmitted light will still be such that a significant portion of light can pass through the screen and activate the detectors.
  • the continuous transparent strip can be of any width but preferably the width of the strip is in the range 2mm to 30mm and even more preferably in the range 2mm to 20mm.
  • the invention is applicable to substrates for security documents prior to applying the security printing processes.
  • the transparent regions extend fully between the sides or boundaries of the substrate. This has two particular advantages as explained in the introduction, namely ensuring that the document can be detected optically and increasing the difficulty of fraudulently reproducing the document.
  • the transparent region need not extend fully between edges of the document and could terminate a short distance before reaching the boundary, for example up to about 10mm.
  • An example of such a document is illustrated in Figure 11 where a transparent region or strip 50 terminates short of the edges or boundary of the document by a distance D.
  • the current invention is most applicable to banknotes but can also be used in other secure documents such as a fiscal stamp, cheque, postal stamp, certificate of authenticity, brand protection article, bond or payment voucher.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Birds (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

L'invention porte sur un substrat (1) de polymère pour document de sécurité, présentant au moins une zone transparente allongée (3) s'étendant à travers une zone plus opaque du substrat et entièrement ou presque entre des emplacements espacés situés à la limite du substrat. La largeur de la zone transparente (3) est d'au moins 2 mm, et la zone transparente présente une densité optique ne dépassant pas 0,3.
PCT/GB2009/000242 2008-02-08 2009-01-29 Substrat pour document de sécurité Ceased WO2009098435A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
MX2010007905A MX2010007905A (es) 2008-02-08 2009-01-29 Sustrato para documento de seguridad.
AU2009211238A AU2009211238A1 (en) 2008-02-08 2009-01-29 Substrate for security document
EP09708531A EP2262646A2 (fr) 2008-02-08 2009-01-29 Substrat pour document de sécurité
CA2715115A CA2715115A1 (fr) 2008-02-08 2009-01-29 Substrat pour document de securite

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0802421.8 2008-02-08
GBGB0802421.8A GB0802421D0 (en) 2008-02-08 2008-02-08 Substrate for security document

Publications (2)

Publication Number Publication Date
WO2009098435A2 true WO2009098435A2 (fr) 2009-08-13
WO2009098435A3 WO2009098435A3 (fr) 2009-10-29

Family

ID=39247393

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2009/000242 Ceased WO2009098435A2 (fr) 2008-02-08 2009-01-29 Substrat pour document de sécurité

Country Status (6)

Country Link
EP (1) EP2262646A2 (fr)
AU (1) AU2009211238A1 (fr)
CA (1) CA2715115A1 (fr)
GB (1) GB0802421D0 (fr)
MX (1) MX2010007905A (fr)
WO (1) WO2009098435A2 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836754A (en) * 1972-09-18 1974-09-17 F Toye Coded card employing differential translucencies
GB2250473A (en) * 1990-12-04 1992-06-10 Portals Ltd Security articles
US6607813B2 (en) * 2001-08-23 2003-08-19 The Standard Register Company Simulated security thread by cellulose transparentization
GB2379501A (en) * 2001-09-06 2003-03-12 Ncr Int Inc Media detection and validation system with transmission and reflection optical detectors
DE10163381A1 (de) * 2001-12-21 2003-07-03 Giesecke & Devrient Gmbh Sicherheitspapier sowie Verfahren und Vorrichtung zu seiner Herstellung
FR2890665B1 (fr) * 2005-09-15 2017-11-03 Arjowiggins Article securise, notamment un document de securite et/ou de valeur.

Also Published As

Publication number Publication date
GB0802421D0 (en) 2008-03-19
EP2262646A2 (fr) 2010-12-22
CA2715115A1 (fr) 2009-08-13
AU2009211238A1 (en) 2009-08-13
WO2009098435A3 (fr) 2009-10-29
MX2010007905A (es) 2010-08-06

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