EP2185365A1 - Security document - Google Patents

Security document

Info

Publication number
EP2185365A1
EP2185365A1 EP08735377A EP08735377A EP2185365A1 EP 2185365 A1 EP2185365 A1 EP 2185365A1 EP 08735377 A EP08735377 A EP 08735377A EP 08735377 A EP08735377 A EP 08735377A EP 2185365 A1 EP2185365 A1 EP 2185365A1
Authority
EP
European Patent Office
Prior art keywords
substrate
security document
security
display element
document according
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.)
Withdrawn
Application number
EP08735377A
Other languages
German (de)
French (fr)
Inventor
Jörg Zintzmeyer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2185365A1 publication Critical patent/EP2185365A1/en
Withdrawn legal-status Critical Current

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
    • B42D25/20—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
    • 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
    • B42D25/305—Associated digital information
    • 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
    • B42D25/373—Metallic materials
    • 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

Definitions

  • the invention relates to a security document such as banknote, certificate or ID card, with a flexible substrate having at least one security feature.
  • Security documents are provided with numerous security features that serve solely for the purpose of anti-counterfeiting.
  • security features whose verification is possible only with professional means, e.g. the serial number of a bill or a symbol that is only visible when illuminated under UV light, and those that are obvious and even at a cursory glance by the "man in the street" notice.
  • professional means e.g. the serial number of a bill or a symbol that is only visible when illuminated under UV light
  • those that are obvious and even at a cursory glance by the "man in the street” notice While with the technically complex security features for testing by professional means a high standard is reached, which leaves the counterfeiter hardly a chance, there are currently no security features that are feasible both with reasonable effort in large numbers and inherently obvious, i. are sufficiently conspicuous to make even the "man on the street” a forgery "at a glance” recognizable.
  • the invention closes this gap.
  • a security document such as a bill, certificate or badge, having a flexible substrate having at least one security feature.
  • the security feature includes an electrically activatable display element which is activated when the substrate is folded and the folded parts slide over one another, the electrical energy required to activate the display element being provided by interaction of the superimposed sliding parts of the substrate.
  • This is folded approximately in the middle of its longitudinal direction, so that the parts on either side of the fold line superimposed. Then the superposed parts are shifted relative to each other and come together in interaction.
  • the interaction may be a magnetic induction or a triboelectric effect. Both effects generate electrical energy that is used to activate the display element.
  • Display elements such as liquid crystal displays require very little electrical energy to activate, which can be provided with the mentioned effects.
  • a security document such as a bill, certificate or badge, having a substrate having at least one security feature.
  • the security feature includes an electrically activatable display element, whose power supply is provided by photovoltaic structures, which are applied by printing on the substrate and activate the display element in light exposure.
  • the security document is exposed to a bright light source. In daylight, this is sufficient for exposure to light. Since display elements such as liquid crystal displays require very little electrical energy for their activation, photovoltaic structures of small size and with low efficiency, which can be applied by printing on flexible substrates, are sufficient.
  • the display element detects the authenticity of the security document.
  • the display element can be a very noticeable feature. First, it can occupy a relatively large area on the security document; on the other hand, e.g. Liquid crystal displays a high contrast.
  • the statement is "digital": the security feature is either clear or absent.
  • the anti-counterfeiting security can be increased by the display element producing a display image correlated to a security feature visibly applied to the substrate. If the security document is unique, this property can be made verifiable, for example by having the security feature printed on it match the display image of the activated display element.
  • Figure 1 is a schematic representation of a security document with embedded magnetic and induction structures in plan view.
  • Fig. 2 shows schematically the folded about a transverse axis security document, namely
  • Fig. 3 to Fig. 5 are plan views of various embodiments of a display element
  • Fig. 6 is a plan view of an embodiment of the security element having structures for generating static electricity
  • Fig. 7 is a plan view of an embodiment of the security element with photovoltaic structures.
  • a bill 10 is shown as a first embodiment, the
  • Substrate consists essentially of paper and has the means to generate by magnetic induction, an electrical voltage in a conductor.
  • These means consist of a flat coil 12, which is printed in a spiral with a conductive ink or ink on the substrate of the bill 10, and a flat magnetic structure, which is generally indicated at 14 in FIG.
  • the printed flat coil 12 occupies about one half of the bill, based on an imaginary mean transverse axis AA, and the magnetic structure 14 the other half. It is understood that the surface of the bill 10 shown in Fig. 1 are printed in a conventional manner with the characteristic motifs of a bill, so that neither the flat coil 12 nor the Magnetic structure 14 is visible.
  • the magnetization direction of the magnetic structure 14 is perpendicular to the plane of the bill substrate, as illustrated in Fig. 1 by small crosses.
  • the flat coil may therefore have a high internal resistance, so that no high demands are placed on the conductivity of the ink or ink used.
  • Fig. 2c Upon movement of the superimposed parts of the bill in the opposite direction, as shown in Fig. 2c), the same results in an induced voltage whose polarity and height is adapted to the display element by a suitable driver circuit.
  • the overlapping parts of the bill can be moved between the thumb and forefinger, so that neither equipment nor special skills are required.
  • Fig. 3 shows very schematically two display elements 16 and 18 which are applied to one side of the bill 10a.
  • the display element 16 is punctiform and surrounded by a printed ring 16a.
  • the display element 18 is annular and surrounds a printed dot 18a.
  • Both display elements 16, 18 are in the illustrated embodiment, liquid crystal displays that appear dark black when activated, but otherwise not visible sinbesteht.d.
  • the display elements 16, 18 are integrated into the graphic elements of the bill and conspicuous part of the same.
  • Elemental is disposed, namely, a square, a circle 2Oa 1 20b, a triangle and a diamond 20c 2oD.
  • a bill 10 c having a display panel 22 on the printed serial number, in the at
  • the physical effects that are used to generate the voltage required to activate the display element naturally depend on the requirements of the particular display element used. If a very high activation voltage is required, as in the case of display elements which use an ionization effect, the embodiment according to FIG. 6 is suitable, in which a high electrical voltage is generated by triboelectricity.
  • the bill 10d in Fig. 6 has a half 24, the usual
  • Paper consists, and a half, which consists of polypropylene. The mating
  • Paper / polypropylene gives a good usable activation voltage because of the distance in the triboelectric series. It is understood that the bill is printed in the usual way, but with the inclusion of the display elements, with the characteristic bank note symbols.
  • Fig. 7 shows a bill 10e using a photovoltaic effect.
  • photovoltaic elements are embedded, which are indicated by photodiode symbols 28.
  • photovoltaic elements can be realized by printing technology according to new findings and can be applied to a flexible substrate.
  • photovoltaic elements can be realized by printing technology according to new findings and can be applied to a flexible substrate.
  • an operating voltage which can be easily adapted to the requirements of the display elements used.

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

The invention relates to a security document, such as a bill (10), certificate or identity document, comprises a security feature on a flexible substrate, said feature containing an electrically activatable indicator element (16, 18). Said element is activated when the substrate is folded and the folded parts slide over each other. The electrical energy required for the activation of the indicator element is made available by the interaction of the parts of the substrate that slide over each other. Suitable indicator elements are especially LCD elements, because they require little power. The required voltage at minimum current strength can be generated by means of an electrodynamic or electrostatic effect.

Description

Sicherheitsdokument The security document
Die Erfindung betrifft ein Sicherheitsdokument wie Geldschein, Zertifikat oder Ausweis, mit einem flexiblen Substrat, das wenigstens ein Sicherheitsmerkmal aufweist.The invention relates to a security document such as banknote, certificate or ID card, with a flexible substrate having at least one security feature.
Sicherheitsdokumente sind mit zahlreichen Sicherheitsmerkmalen versehen, die allein dem Zweck der Fälschungssicherheit dienen. Man unterscheidet zwischen Sicherheitsmerkmalen, deren Überprüfung nur mit professionellen Mitteln möglich ist, z.B. die Seriennummer eines Geldscheins oder ein Symbol, das nur bei Beleuchtung unter UV-Licht sichtbar wird, und solchen, die offensichtlich sind und schon bei flüchtiger Betrachtung durch den "Mann auf der Straße" auffallen. Während bei den technisch aufwendigen Sicherheitsmerkmalen zur Prüfung mit professionellen Mitteln ein hoher Standard erreicht ist, der dem Fälscher kaum eine Chance läßt, gibt es aktuell keine Sicherheitsmerkmale, die sowohl mit vertretbarem Aufwand in großen Stückzahlen realisierbar sind als auch von Natur aus offensichtlich, d.h. ausreichend auffällig sind, um auch dem "Mann auf der Straße" eine Fälschung "auf einen Blick" erkennbar zu machen.Security documents are provided with numerous security features that serve solely for the purpose of anti-counterfeiting. A distinction is made between security features whose verification is possible only with professional means, e.g. the serial number of a bill or a symbol that is only visible when illuminated under UV light, and those that are obvious and even at a cursory glance by the "man in the street" notice. While with the technically complex security features for testing by professional means a high standard is reached, which leaves the counterfeiter hardly a chance, there are currently no security features that are feasible both with reasonable effort in large numbers and inherently obvious, i. are sufficiently conspicuous to make even the "man on the street" a forgery "at a glance" recognizable.
Die Erfindung schließt diese Lücke.The invention closes this gap.
Gemäß einem ersten Aspekt der Erfindung wird ein Sicherheitsdokument wie Geldschein, Zertifikat oder Ausweis geschaffen, mit einem flexiblen Substrat, das wenigstens ein Sicherheitsmerkmal aufweist. Das Sicherheitsmerkmal enthält ein elektrisch aktivierbares Anzeigeelement, das aktiviert wird, wenn das Substrat gefaltet wird und die gefalteten Teile übereinander gleiten, wobei die zur Aktivierung des Anzeigeelements erforderliche elektrische Energie durch Wechselwirkung der übereinander gleitenden Teile des Substrats bereitgestellt wird. Zur Überprüfung des Sicherheitsdokuments, insbesondere eines Geldscheins, wird dieser etwa in der Mitte seiner Längsrichtung gefaltet, so daß die Teile beiderseits der Faltlinie übereinanderliegen. Dann werden die aufeinanderliegenden Teile relativ zueinander verschoben und treten miteinander in Wechselwirkung. Die Wechselwirkung kann eine magnetische Induktion oder ein triboelektrischer Effekt sein. Beide Effekte erzeugen elektrische Energie, die zur Aktivierung des Anzeigeelements genutzt wird. Anzeigeelemente wie Flüssigkristallanzeigen benötigen zur Aktivierung eine äußerst geringe elektrische Energie, die mit den genannten Effekten bereitgestellt werden kann.According to a first aspect of the invention, there is provided a security document, such as a bill, certificate or badge, having a flexible substrate having at least one security feature. The security feature includes an electrically activatable display element which is activated when the substrate is folded and the folded parts slide over one another, the electrical energy required to activate the display element being provided by interaction of the superimposed sliding parts of the substrate. To check the security document, in particular a bill, this is folded approximately in the middle of its longitudinal direction, so that the parts on either side of the fold line superimposed. Then the superposed parts are shifted relative to each other and come together in interaction. The interaction may be a magnetic induction or a triboelectric effect. Both effects generate electrical energy that is used to activate the display element. Display elements such as liquid crystal displays require very little electrical energy to activate, which can be provided with the mentioned effects.
Gemäß einem zweiten Aspekt der Erfindung wird ein Sicherheitsdokument wie Geldschein, Zertifikat oder Ausweis geschaffen, mit einem Substrat, das wenigstens ein Sicherheitsmerkmal aufweist. Das Sicherheitsmerkmal enthält ein elektrisch aktivierbares Anzeigeelement, dessen Energieversorgung durch photovoltaische Strukturen bereitgestellt wird, die drucktechnisch auf dem Substrat aufgebracht sind und das Anzeigeelement bei Lichtexposition aktivieren. Zur Überprüfung auf Echtheit wird das Sicherheitsdokument einer hellen Lichtquelle ausgesetzt. Bei Tageslicht ist dieses zur Lichtexposition ausreichend. Da Anzeigeelemente wie Flüssigkristallanzeigen eine sehr geringe elektrische Energie zu ihrer Aktivierung benötigen, genügen photovoltaische Strukturen geringer Größe und mit geringem Wirkungsgrad, die drucktechnisch auch auf flexiblen Substraten aufgebracht werden können.According to a second aspect of the invention, there is provided a security document, such as a bill, certificate or badge, having a substrate having at least one security feature. The security feature includes an electrically activatable display element, whose power supply is provided by photovoltaic structures, which are applied by printing on the substrate and activate the display element in light exposure. To verify authenticity, the security document is exposed to a bright light source. In daylight, this is sufficient for exposure to light. Since display elements such as liquid crystal displays require very little electrical energy for their activation, photovoltaic structures of small size and with low efficiency, which can be applied by printing on flexible substrates, are sufficient.
An der Aktivierung des Anzeigeelements wird die Echtheit des Sicherheitsdokuments erkannt. Das Anzeigelement kann ein sehr auffälliges Merkmal sein. Zum einen kann es eine relativ große Fläche auf dem Sicherheitsdokument einnehmen; zum anderen haben z.B. Flüssigkeitskristallanzeigen einen hohen Kontrast. Die Aussage ist "digital": das Sicherheitsmerkmal ist entweder klar erkennbar oder nicht vorhanden.Activation of the display element detects the authenticity of the security document. The display element can be a very noticeable feature. First, it can occupy a relatively large area on the security document; on the other hand, e.g. Liquid crystal displays a high contrast. The statement is "digital": the security feature is either clear or absent.
Die Fälschung eines erfindungsgemäß geschützten Sicherheitsdokuments ist mit drucktechnischen Mitteln oder Kopierverfahren, die dem Fälscher zur Verfügung stehen, nicht möglich, da zur Herstellung des Sicherheitsdokuments Technologie benötigt wird, die am Markt nicht verfügbar ist.The forgery of a security document protected according to the invention is not possible by means of printing or copying available to the counterfeiter, since the production of the security document requires technology which is not available on the market.
Die Fälschungssicherheit kann gesteigert werden, indem das Anzeigeelement ein Anzeigebild produziert, das in Korrelation zu einem auf dem Substrat sichtbar aufgebrachten Sicherheitsmerkmal steht. Wenn das Sicherheitsdokument ein Unikat ist, kann diese Eigenschaft überprüfbar gemacht werden, indem das z.B. aufgedruckte Sicherheitsmerkmal mit dem Anzeigebild des aktivierten Anzeigeelements übereinstimmen muß. Mehrere Ausführungsformen des Sicherheitselements werden nun unter Bezugnahme auf die beigefügten Zeichnungen näher beschrieben. In den Zeichnungen zeigen:The anti-counterfeiting security can be increased by the display element producing a display image correlated to a security feature visibly applied to the substrate. If the security document is unique, this property can be made verifiable, for example by having the security feature printed on it match the display image of the activated display element. Several embodiments of the security element will now be described in detail with reference to the accompanying drawings. In the drawings show:
Fig. 1 eine schematische Darstellung eines Sicherheitsdokuments mit eingelagerten Magnet- und Induktionsstrukturen in Draufsicht;Figure 1 is a schematic representation of a security document with embedded magnetic and induction structures in plan view.
Fig. 2 schematisch das um eine Querachse gefaltete Sicherheitsdokument, und zwarFig. 2 shows schematically the folded about a transverse axis security document, namely
a) symmetrisch gefaltet,a) symmetrically folded,
b) in einer Richtung verschoben undb) shifted in one direction and
c) in der entgegengesetzten Richtung verschoben;c) shifted in the opposite direction;
Fig. 3 bis Fig. 5 Draufsichten verschiedener Ausführungen eines Anzeigeelements;Fig. 3 to Fig. 5 are plan views of various embodiments of a display element;
Fig. 6 eine Draufsicht einer Ausführungsform des Sicherheitselements mit Strukturen zur Erzeugung von Reibungselektrizität;Fig. 6 is a plan view of an embodiment of the security element having structures for generating static electricity;
Fig. 7 eine Draufsicht einer Ausführungsform des Sicherheitselements mit photovoltaischen Strukturen.Fig. 7 is a plan view of an embodiment of the security element with photovoltaic structures.
In den Zeichnungen ist als typischer Anwendungsfall der Erfindung jeweils ein Geldschein gezeigt. Jedoch ist die Erfindung allgemein bei jeder Art von Sicherheitsdokumenten anwendbar.In the drawings, a bill is shown as a typical application of the invention. However, the invention is generally applicable to any type of security document.
In Fig. 1 ist als erstes Ausführungsbeispiel ein Geldschein 10 gezeigt, dessenIn Fig. 1, a bill 10 is shown as a first embodiment, the
Substrat im wesentlichen aus Papier besteht und der Mittel aufweist, um durch magnetische Induktion eine elektrische Spannung in einem Leiter zu erzeugen. Diese Mittel bestehen aus einer Flachspule 12, die spiralförmig mit einer leitfähigen Farbe oder Tinte auf dem Substrat des Geldscheins 10 aufgedruckt ist, und einer flächigen Magnetstruktur, die in Fig. 1 allgemein mit 14 bezeichnet ist. Die gedruckte Flachspule 12 nimmt etwa die eine Hälfte des Geldscheins ein, bezogen auf eine gedachte mittlere Querachse A-A, und die Magnetstruktur 14 die andere Hälfte. Es versteht sich, daß die in Fig. 1 gezeigte Fläche des Geldscheins 10 in üblicher Weise mit den charakteristischen Motiven eines Geldscheins bedruckt sind, so daß weder die Flachspule 12 noch die Magnetstruktur 14 sichtbar ist. Die Magnetisierungsrichtung der Magnetstruktur 14 ist senkrecht zur Ebene des Geldschein-Substrats, wie in Fig. 1 durch kleine Kreuze veranschaulicht ist.Substrate consists essentially of paper and has the means to generate by magnetic induction, an electrical voltage in a conductor. These means consist of a flat coil 12, which is printed in a spiral with a conductive ink or ink on the substrate of the bill 10, and a flat magnetic structure, which is generally indicated at 14 in FIG. The printed flat coil 12 occupies about one half of the bill, based on an imaginary mean transverse axis AA, and the magnetic structure 14 the other half. It is understood that the surface of the bill 10 shown in Fig. 1 are printed in a conventional manner with the characteristic motifs of a bill, so that neither the flat coil 12 nor the Magnetic structure 14 is visible. The magnetization direction of the magnetic structure 14 is perpendicular to the plane of the bill substrate, as illustrated in Fig. 1 by small crosses.
Faltet man den Geldschein, wie in Fig. 2a) gezeigt, um die Querachse A-A, so liegen die Flachspule 12 und die flächige Magnetstruktur 14 übereinander. Verschiebt man nun die übereinanderliegenden Teile des Geldscheins, wie in Fig. 2b) angedeutet, so werden die Magnetfeldlinien, die von der Magnetstruktur 14 ausgehen, durch die Leiterbahnen der Flachspule 12 senkrecht geschnitten. Nach dem bekannten Induktionsgesetz Uιnd = - ΔΦ/Δt wird in der Flachspule 12 eine Spannung induziert. Diese Spannung muß nur einige Volt betragen, denn sie wird für die Aktivierung eines Anzeigeelements verwendet, bei dem es sich insbesondere um eine Flüssigkristallanzeige handelt. Ein solches Anzeigeelement hat auch einen sehr geringen Strombedarf. Die Flachspule darf daher einen hohen Innenwiderstand aufweisen, so daß an die Leitfähigkeit der verwendeten Tinte oder Farbe keine hohen Anforderungen gestellt werden. Bei Bewegung der übereinanderliegenden Teile des Geldscheins in der entgegengesetzten Richtung, wie in Fig. 2c) gezeigt, entsteht genauso eine induzierte Spannung, deren Polarität und Höhe für das Anzeigeelement durch eine geeignete Treiberschaltung anzupassen ist. Wie leicht nachvollzogen werden kann, lassen sich die übereinanderliegenden Teile des Geldscheins zwischen Daumen und Zeigefinger verschieben, so daß weder Gerätschaften noch besondere Fertigkeiten erforderlich sind.If one folds the bill, as shown in FIG. 2 a), about the transverse axis AA, then the flat coil 12 and the planar magnet structure 14 lie one above the other. Moving now the superimposed parts of the bill, as indicated in Fig. 2b), the magnetic field lines, which emanate from the magnetic structure 14, cut through the tracks of the flat coil 12 vertically. According to the known law of induction Uι nd = - ΔΦ / .DELTA.t a voltage is induced in the flat coil 12th This voltage must be only a few volts, because it is used for the activation of a display element, which is in particular a liquid crystal display. Such a display element also has a very low power requirement. The flat coil may therefore have a high internal resistance, so that no high demands are placed on the conductivity of the ink or ink used. Upon movement of the superimposed parts of the bill in the opposite direction, as shown in Fig. 2c), the same results in an induced voltage whose polarity and height is adapted to the display element by a suitable driver circuit. As can be easily understood, the overlapping parts of the bill can be moved between the thumb and forefinger, so that neither equipment nor special skills are required.
Fig. 3 zeigt sehr schematisch zwei Anzeigeelemente 16 und 18, die auf einer Seite des Geldscheins 10a aufgebracht sind. Das Anzeigeelement 16 ist punktförmig und umgeben von einem gedruckten Ring 16a. Das Anzeigeelement 18 ist ringförmig und umgibt einen aufgedruckten Punkt 18a. Beide Anzeigeelemente 16, 18 sind bei dem gezeigten Ausführungsbeispiel Flüssigkristallanzeigen, die bei Aktivierung dunkel schwarz in Erscheinung treten, sonst aber nicht sichtbar sinbesteht.d. Bei konkreten Ausführungsformen sind die Anzeigeelemente 16, 18 in die Grafikelemente des Geldscheins integriert und auffälliger Bestandteil derselben. Bei dem Ausführungsbeispiel nach Fig. 4 ist in jeder Ecke des Geldscheins 10b ein Anzeigeelement in Form einer gefüllten Elementarfigur angeordnet, nämlich ein Quadrat 2Oa1 ein Kreis 20b, ein Dreieck 20c und eine Raute 2Od.Fig. 3 shows very schematically two display elements 16 and 18 which are applied to one side of the bill 10a. The display element 16 is punctiform and surrounded by a printed ring 16a. The display element 18 is annular and surrounds a printed dot 18a. Both display elements 16, 18 are in the illustrated embodiment, liquid crystal displays that appear dark black when activated, but otherwise not visible sinbesteht.d. In specific embodiments, the display elements 16, 18 are integrated into the graphic elements of the bill and conspicuous part of the same. In the embodiment of FIG. 4 in each corner of the bill 10b is a display element in the form of a filled figure Elemental is disposed, namely, a square, a circle 2Oa 1 20b, a triangle and a diamond 20c 2oD.
In Fig. 5 ist ein Ausführungsbeispiel eines Geldscheins 10c gezeigt, der über der aufgedruckten Seriennummer ein Anzeigefeld 22 aufweist, in dem beiIn Fig. 5, an embodiment of a bill 10 c is shown having a display panel 22 on the printed serial number, in the at
Aktivierung dieselbe Seriennummer angezeigt wird. Zwischen dem Inhalt desActivation the same serial number is displayed. Between the content of
Anzeigefeldes und der Seriennummer besteht hier eine triviale Korrelation, dieDisplay field and the serial number here is a trivial correlation, the
Identität.Identity.
Die physikalischen Effekte, die zur Erzeugung der für die Aktivierung des Anzeigeelements benötigten Spannung angewandt werden, hängen naturgemäß von den Anforderungen des jeweils benutzten Anzeigelements ab. Wenn eine sehr hohe Aktivierungsspannung benötigt wird, wie bei Anzeigeelementen, die einen lonisationseffekt nutzen, ist die Ausführungsform nach Fig. 6 geeignet, bei der eine hohe elektrische Spannung durch Reibungselektrizität (triboelektrisch) erzeugt wird. Der Geldschein 10d in Fig. 6 hat eine Hälfte 24, die aus üblichemThe physical effects that are used to generate the voltage required to activate the display element naturally depend on the requirements of the particular display element used. If a very high activation voltage is required, as in the case of display elements which use an ionization effect, the embodiment according to FIG. 6 is suitable, in which a high electrical voltage is generated by triboelectricity. The bill 10d in Fig. 6 has a half 24, the usual
Papier besteht, und eine Hälfte, die aus Polypropylen besteht. Die PaarungPaper consists, and a half, which consists of polypropylene. The mating
Papier/Polypropylen ergibt wegen des Abstandes in der triboelektrischen Reihe eine gut nutzbare Aktivierungsspannung. Es versteht sich, daß der Geldschein in üblicher Weise, allerdings unter Einbeziehung der Anzeigeelemente, mit den charakteristischen Geldscheinsymbolen bedruckt wird.Paper / polypropylene gives a good usable activation voltage because of the distance in the triboelectric series. It is understood that the bill is printed in the usual way, but with the inclusion of the display elements, with the characteristic bank note symbols.
Fig. 7 zeigt einen Geldschein 10e, der einen photovoltaischen Effekt nutzt. In die Fläche des Geldschein-Substrats sind photovoltaische Elemente eingelagert, die durch Photodioden-Symbole 28 angedeutet sind. Auch Photovoltaik- Elemente sind nach neuen Erkenntnissen drucktechnisch realisierbar und können auf einem flexiblen Substrat aufgebracht werden. Bei dieser Ausführungsform entsteht durch geeignete Parallel- oder Reihenschaltung der einzelnen photovoltaischen Elemente eine Betriebsspannung, die an die Anforderungen der verwendeten Anzeigeelemente leicht angepaßt werden kann. Fig. 7 shows a bill 10e using a photovoltaic effect. In the surface of the banknote substrate photovoltaic elements are embedded, which are indicated by photodiode symbols 28. Also, photovoltaic elements can be realized by printing technology according to new findings and can be applied to a flexible substrate. In this embodiment, by suitable parallel or series connection of the individual photovoltaic elements an operating voltage which can be easily adapted to the requirements of the display elements used.

Claims

Patentansprüche claims
1. Sicherheitsdokument wie Geldschein, Zertifikat oder Ausweis, mit einem flexiblen Substrat, das wenigstens ein Sicherheitsmerkmal aufweist, dadurch gekennzeichnet, daß das Sicherheitsmerkmal ein elektrisch aktivierbares Anzeigeelement enthält, das aktiviert wird, wenn das Substrat gefaltet wird und die gefalteten Teile übereinander gleiten, wobei die zur Aktivierung des Anzeigeelements erforderliche elektrische Energie durch Wechselwirkung der übereinander gleitenden Teile des Substrats bereitgestellt wird.A security document, such as a banknote, certificate or badge, having a flexible substrate having at least one security feature, characterized in that the security feature includes an electrically activatable display element which is activated when the substrate is folded and the folded parts slide over one another the electrical energy required to activate the display element is provided by interaction of the superimposed sliding parts of the substrate.
2. Sicherheitsdokument nach Anspruch 1 , dadurch gekennzeichnet, daß das Substrat eine gedachte Faltachse aufweist und das Substrat auf der einen Seite der Faltachse eine spulenartig gewundene Leiterbahn sowie auf der anderen Seite eine Permanentmagnetstruktur aufweist, deren Magnetachse senkrecht zur Ebene des Substrats ist.2. Security document according to claim 1, characterized in that the substrate has an imaginary folding axis and the substrate on one side of the folding axis a coil-like wound track and on the other side has a permanent magnet structure whose magnetic axis is perpendicular to the plane of the substrate.
3. Sicherheitsdokument nach Anspruch 2, dadurch gekennzeichnet, daß die Leiterbahn mit leitfähiger Farbe oder Tinte auf dem Substrat aufgedruckt ist.3. Security document according to claim 2, characterized in that the conductor track is printed with conductive ink or ink on the substrate.
4. Sicherheitsdokument nach Anspruch 1 , dadurch gekennzeichnet, daß das Substrat eine gedachte Faltachse aufweist und das Substrat beiderseits der Faltachse Materialien aufweist, die in der triboelektrischen Reihe voneinander entfernt sind.4. Security document according to claim 1, characterized in that the substrate has an imaginary folding axis and the substrate on both sides of the folding axis has materials which are removed from each other in the triboelectric series.
5. Sicherheitsdokument nach Anspruch 4, dadurch gekennzeichnet, daß das eine Material Papier und das andere Polypropylen ist.5. Security document according to claim 4, characterized in that the one material is paper and the other polypropylene.
6. Sicherheitsdokument wie Geldschein, Zertifikat oder Ausweis, mit einem flexiblen Substrat, das wenigstens ein Sicherheitsmerkmal aufweist, dadurch gekennzeichnet, daß das Sicherheitsmerkmal ein elektrisch aktivierbares Anzeigeelement enthält, dessen Energieversorgung durch photovoltaische Strukturen bereitgestellt wird, die drucktechnisch auf dem Substrat aufgebracht sind und das Anzeigeelement bei Lichtexposition aktivieren. 6. Security document such as banknote, certificate or ID card, with a flexible substrate having at least one security feature, characterized in that the security feature includes an electrically activatable display element whose power supply is provided by photovoltaic structures, which are applied by printing on the substrate and the Activate display element when exposed to light.
7. Sicherheitsdokument nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß das Anzeigeelement ein Anzeigebild produziert, das in Korrelation zu einem auf dem Substrat sichtbar aufgebrachten Sicherheitsmerkmal steht. 7. Security document according to one of the preceding claims, characterized in that the display element produces a display image which is correlated to a visible on the substrate applied security feature.
EP08735377A 2007-05-04 2008-04-24 Security document Withdrawn EP2185365A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202007006423U DE202007006423U1 (en) 2007-05-04 2007-05-04 The security document
PCT/EP2008/003309 WO2008135177A1 (en) 2007-05-04 2008-04-24 Security document

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Publication number Priority date Publication date Assignee Title
DE10163266A1 (en) * 2001-12-21 2003-07-03 Giesecke & Devrient Gmbh Document of value and device for processing documents of value
DE20200358U1 (en) * 2002-01-10 2003-05-22 Bundesdruckerei Gmbh Rechts Un Value or security document with LED elements
DE102004049139A1 (en) * 2003-10-09 2005-04-28 Michael Polus Object protection device for forgery prevention or authentication e.g. for banknote, emits visible light whose intensity or spectral content varies with time
ATE502789T1 (en) * 2006-01-27 2011-04-15 European Central Bank ELECTRONIC SECURITY MEANS FOR SECURITY DOCUMENTS WITH LINEAR DYNAMO FOR POWER GENERATION

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Title
See references of WO2008135177A1 *

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