EP1618006B1 - Element de securite et procede de verification pour un document de valeur - Google Patents

Element de securite et procede de verification pour un document de valeur Download PDF

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Publication number
EP1618006B1
EP1618006B1 EP04727525A EP04727525A EP1618006B1 EP 1618006 B1 EP1618006 B1 EP 1618006B1 EP 04727525 A EP04727525 A EP 04727525A EP 04727525 A EP04727525 A EP 04727525A EP 1618006 B1 EP1618006 B1 EP 1618006B1
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EP
European Patent Office
Prior art keywords
coercive
security element
low
magnetic area
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.)
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EP04727525A
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German (de)
English (en)
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EP1618006A1 (fr
Inventor
Manfred Heim
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Giesecke and Devrient GmbH
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Giesecke and Devrient GmbH
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Priority to PL04727525T priority Critical patent/PL1618006T3/pl
Priority to SI200430153T priority patent/SI1618006T1/sl
Publication of EP1618006A1 publication Critical patent/EP1618006A1/fr
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Publication of EP1618006B1 publication Critical patent/EP1618006B1/fr
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    • 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
    • G07D7/04—Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/355—Security threads
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/004—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 digital security elements, e.g. information coded on a magnetic thread or strip

Definitions

  • the invention relates to a security element for a value document, such as a banknote, a passport, a passport document or the like, having a low-coercive magnetic region for forming a magnetic code.
  • the invention further relates to a value document having such a security element, to a method for producing such a security element and to a method for checking a value document provided with such a security element.
  • Banknotes and other monetary securities such as stocks, checks, traveler's checks, check or credit cards, or other forgery-prone securities, such as passports and other identity cards, often incorporate a security element to increase counterfeit security.
  • the security element can be, for example, a security thread embedded in a banknote, an applied security strip or a self-supporting element, such as a transfer element, a patch or a label, which after its manufacture is firmly connected to the object to be secured.
  • a safety device in the form of a thread or a band is known, which is provided with an interrupted ferromagnetic coating. By scanning the thread or tape in a testing device, the authenticity of a document provided with the security device can be checked.
  • a security document with an introduced magnetic security element is known from DE 4101301.
  • the security element has a magnetic coating with light gray to silvery soft magnetic pigments, which are mixed with a varnish and spread with this on a substrate.
  • the magnetic security element hardly appears after being embedded in a security document in incident light.
  • EP 748 896 A1 proposes to provide a security document for automatic authentication with a magnetic material whose coercivity is between 10 and 250 Oe (800 A / m to 20 kA / m). While the remanence of the material corresponds to the commonly used magnetic materials and thus can be measured with standard sensors, the low coercivity of the magnetic material can only be determined with special sensors. As a result, an additional securing effect is achieved, which greatly complicates the adjustment of the magnetic security element.
  • the document DE 40 22 739 A1 discloses a test device for documents equipped with magnetic properties, with the magnetic particles low remanence can still be detected with high reliability.
  • microchips are increasingly being integrated into all types of value documents.
  • the equipment of value documents with microchips is, however, with not inconsiderable manufacturing costs and with additional costs. Also, not all types of value documents are equally suitable for the equipment with microchips.
  • the object of the invention is to provide a security element which avoids the disadvantages of the prior art.
  • the security element should be activated by switching on and off or information on and off can save and thereby be easy and inexpensive to produce.
  • a high-coercive magnetic region is provided in a security element of the type mentioned, which at least partially overlaps the low-coercive magnetic region and, in the magnetized state, magnetizes the low-coercive magnetic region, preferably brings it to saturation.
  • a magnetic code can be written by magnetizing the low-coercive magnetic region or partial regions thereof in a manner known per se. Subsequently, the magnetization of the low-coercive magnetic field be detected by a conventional sensor, such as in a banknote processing machine.
  • the high-coercive magnetic field When the high-coercive magnetic field is magnetized, its magnetic field magnetizes or even saturates the low-coercive magnetic region. An external magnetic field of the order of magnitude of the coercive field strength of the low-coercive magnetic region can then no longer magnetize it, the magnetic code is thus switched off. To turn on the magnetic code, the overlapping high-coercive magnetic region is demagnetized again. Subsequently, the low-coercive magnetic region can again be detected by means of conventional sensors.
  • the low-coercive magnetic region contains a plurality of separately magnetizable partial regions. These subareas together advantageously form a magnetic code.
  • a multiplicity of arbitrary, complex types of magnetic codes can be produced in that the subregions have a specific geometry and / or spatial arrangement and / or coercivity and / or remanence.
  • the magnetic properties coercivity and remanence can be controlled by the type, amount or layer thickness of the magnetic material in the individual subregions. The easiest way, however, is to construct the magnetic code from individual magnetic bits which are formed by the presence or absence of magnetization in a partial region of the low-coercive magnetic region.
  • the high-coercive magnetic region may be formed continuously, or may in turn comprise a plurality of separate subregions, each of which at least partially overlap one or more of the low-coercive subregions.
  • a high-coercive partial area can be assigned to a low-coercive partial area and overlap it.
  • the high-coercive magnetic region completely overlaps the low-coercive magnetic region.
  • the high-coercive magnetic region is formed slightly smaller than the low-coercive magnetic region, as long as it is ensured that magnetization of the high-coercive magnetic region magnetizes or saturates the low-coercive magnetic region.
  • the low-coercive magnetic region expediently has a coercive field strength between about 10 and about 500 Oe (800 A / m to 40 kA / m), preferably between about 150 and about 350 Oe (12 kA / m to 28 kA / m).
  • the low-coercive magnetic region is formed in a material layer containing iron oxides, pure iron, nickel or another soft magnetic material. The thickness of the material layer is preferably between about 0.05 ⁇ m and about 20 ⁇ m.
  • the high-coercive magnetic region expediently has a coercive field strength above about 300 Oe (24 kA / m), preferably above about 1000 Oe (80 kA / m) and particularly preferably above about 2000 Oe (160 kA / m).
  • Layers having a coercive force of up to about 4000 Oe (320 kA / m) are industrially readily available, with such high field strengths being quite advantageous in order to increase security against unwanted extinguishment or magnetic reversal.
  • With special, but more expensive Materials achieve coercivities of over 35,000 Oe (2.8 MA / m). These special materials can be used with advantage for the high-coercive magnetic field.
  • the thickness of the high coercive material layer is preferably between about 0.05 ⁇ m and about 20 ⁇ m.
  • the high-coercive material preferably contains an alloy of iron / cobalt / nickel or iron / cobalt / vanadium or platinum / cobalt or aluminum / nickel / cobalt or iron / cobalt / chromium or samarium / cobalt or samarium / copper or samarium / iron or samarium / Zirconium or neodymium / iron or neodymium / boron.
  • the low-coercive and the high-coercive magnetic region are arranged one above the other on a common carrier.
  • both the low-coercive magnetic region can be arranged on the high-coercive magnetic region, and the high-coercive magnetic region lie above the low-coercive magnetic region.
  • the low-coercive and high-coercive magnet regions may be disposed on opposite sides of a common carrier. It is only important that the distance of the two magnetic regions is small enough to obtain the saturation effect of the high-coercive region.
  • a further high-coercive magnetic region may be provided which serves to store a switching state of the security element. This switching state can be read and evaluated, for example, with a magnetic sensor. In cases where no complex magnetic code is required, even this high-coercive magnetic field is sufficient to secure an object.
  • an opaque cover layer which opacifies the position and arrangement of the low-coercive magnetic region, in particular in transmitted light, at least in some areas.
  • the covering layer can be formed, for example, by an opaque black or colored printing ink or comprise a layer of aluminum, gold, copper, iron, nickel or an alloy of these metals.
  • the cover layer may additionally have recesses in the form of characters or patterns which form visually and / or machine-readable information.
  • the covering layer is applied to the upper of the magnetic layers, for example, or a separate covering layer is provided above and below the magnetic layers.
  • the security element preferably forms a security thread, a security strip or a transfer element.
  • the transfer element is in particular arranged on a transfer film and is only detached from it for application to a value document.
  • the low-coercive and the high-coercive magnetic region are preferably applied to a common substrate or to a security paper or security document, e.g. imprinted or evaporated by a vacuum vapor process.
  • the invention also includes a security paper and a value document such as a banknote, a passport, a passport document or the like provided with a security element of the type described.
  • the security element can be contained on a carrier in the security paper or document of value.
  • the low coercive and the high-coercive magnetic region of the security element can be arranged directly on the security paper or document of value. Both an arrangement on the same side and an arrangement on opposite sides of the security paper or value document come into consideration.
  • a further high-coherence magnetic area for storing a switching state of the security paper or value document can be provided in the security paper or value document, which is read and evaluated, for example, with a magnetic sensor.
  • the low-coercive magnetic field is magnetized in a field which is at least twice as high as its coercive force.
  • the high-coercive magnet region is magnetized in step b) perpendicular to a predetermined direction of magnetization of the low-coercive magnet region.
  • the high-coercive magnetic field then magnetizes or saturates the sub-regions of the low-coercive magnetic region, so that a magnetic code can no longer be detected by a detection device such as a banknote sensor.
  • the high-coercive magnetic region may be magnetized in step b) in parallel to a predetermined magnetization direction of the low-coercive magnetic region.
  • the field of the high-coercive magnetic field magnetizes or brings into saturation the partial regions of the low-coercive magnetic region. Due to the parallel alignment of the two magnetizations, a sensor designed for the low-coercive magnet regions always responds in this case, so that encoded information is superimposed on the magnetized high-coercive region and thus no longer recognized. In both variants mentioned, the magnetic code of the low-coercive magnetic regions is thus switched off.
  • the high-coercive magnetic region is expediently demagnetized after the value document has been marked. Thereafter, the magnetic code in the low-coercive magnetic regions of the security element can be magnetized and detected again in the detection in the desired direction. The low-coercive magnet code Therefore, it can be reactivated by demagnetization of the high-coercive area.
  • the security contains an elongate security element with a longitudinal axis.
  • the low-coercive portions are then magnetized in a direction perpendicular to the longitudinal axis.
  • step c If a later readout attempt fails according to step c), that is, if the specified magnetic code can not be read out successfully, it is concluded that a marking or a counterfeit is present.
  • a marking of the value document is determined, the functionality of the value document is modified, in particular restricted, according to a preferred variant of the method.
  • an evaluation system can be set so that a marked banknote is only limitedly suitable for automating. Alternatively, it may be set so that also marked banknotes are fully automatic, but the evaluation system recognizes the banknote as marked and issues a corresponding indication.
  • FIG. 1 shows a schematic representation of a banknote 10 with an embedded security thread 12 and a glued transfer element 14. As indicated by the dashed border, the security thread 12 is completely embedded in the interior of the banknote 10. The transfer element 14 is adhered to the surface of the banknote 10 with a hot melt adhesive.
  • the security elements 12, 14 can, in addition to the magnetic structure described below, contain further security features, such as a negative text, a hologram or other optical effect structures, contain, which are known per se, and therefore will not be explained here.
  • FIG. 2 shows schematically the layer structure of the security thread 12 of Figure 1 in cross section.
  • the security thread 12 has a transparent plastic film 20 serving as a substrate for the magnetic layers.
  • this plastic film 20 is printed a continuous high-coercive magnetic layer 22 having a coercive force greater than 2000 Oe.
  • On the high coercive magnetic layer 22 is a plurality of low-coercive magnetic regions, here individual magnetic bits 24, printed, which form a magnetic code.
  • the material and the production method of the low-coercive magnetic regions are coordinated with one another such that the low-coercive material layer has a coercive field strength of approximately 250 Oe.
  • FIG. 3 shows the security thread 12 when the banknote 10 is active.
  • the high-coercive magnetic layer 22 is demagnetized and thus exerts no influence on the low-coercive magnetic bits 24.
  • the Magnetic bits 24 are magnetized in a known manner perpendicular to the longitudinal axis 26 of the security thread 12 to store a magnetic code in the security thread.
  • the three magnetic bits 24 shown represent the binary number "101", which results from the sequence of magnetizations M 0 (magnetized-demagnetized-magnetized). This magnetic code can be read out with a conventional banknote sensor and further processed.
  • the high-coercive magnetic layer 22 is magnetized by a strong external magnetic field.
  • the field of the highly coercive magnetic layer 22 magnetizes or saturates the magnetic bits 24 arranged above it so that subsequently the previously stored magnetic code with a banknote sensor can no longer be detected.
  • FIG. 4 shows a first marked state of the banknote 10, in which the high-coercive magnetic layer 22 is magnetized parallel to the longitudinal axis 26 of the security strip, as indicated by the thick arrows M 1 .
  • the magnetic bits 24 are also magnetized in this state until their saturation magnetization along the longitudinal axis 26.
  • the remanent magnetization M 1 of the high-coercive layer keeps the saturation magnetization of the magnetic bits 24 stable.
  • an external magnetic field of the order of magnitude of the coercive force of the magnetic bits 24 can not change their magnetization. The magnetic bits 24 are thus turned off, the bill is inactive.
  • FIG. 10 A second marked state of the banknote 10 is shown in FIG. There, the high-coercive magnetic layer 22 is magnetized perpendicular to the longitudinal axis 26 of the security strip 12.
  • the magnetization M 2 of the high-coercive Magnetic layer 22 brings here also the magnetic bits 24 in saturation.
  • a magnetic sensor will respond over the entire length of the security strip 12. A stored information can thus no longer be taken from the magnetized magnet bits 24, the banknote is inactive as in the first marked state.
  • the type of marking and thus the switching state of the banknote can additionally be encoded in another high-coercive magnetic area 16 (FIG. 1) on the banknote.
  • the magnetic region 16 In the magnetization of the high coercive magnetic layer 22, the magnetic region 16 is also magnetized, so that its magnetization direction corresponds to that of the magnetic layer 22.
  • the switching state of the banknote (unmarked, first or second marked state) can be interrogated in this embodiment via a magnetic sensor from the magnetic region 16. It is also possible to check only one direction of magnetization. The direction of magnetization perpendicular thereto and the demagnetized state then represent a common switching state. It is also possible to provide a document only with the high-coercive magnetic region 16.
  • each low-coercive magnetic bit 34 is assigned its own high-coherence magnetic region 32.
  • the magnetic bits 34 may then be individually turned on or off by magnetizing the associated magnetic regions 32. Accordingly, a plurality of groups of magnetic bits may be formed which are turned on or off together by a high-coercive magnetic domain.
  • FIG. 7 shows a security thread as in FIG. 2, in which the sequence of the highly coercive and low-coercive magnetic layers 42, 44 on the substrate 40 is interchanged.
  • the high-coercive and low-coercive magnetic layers 52, 54 may be disposed on different sides of the common substrate 50.
  • the coercive strengths of the magnetic layers 52, 54 and the layer thickness of the substrate 50 must be coordinated so that a magnetization of the high coercive magnetic layer 52 drives the magnetic bits 54 into saturation.
  • the substrate 50 may in this case also be formed by the security itself, for example the banknote 10.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Credit Cards Or The Like (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Claims (32)

  1. Elément de sécurité pour un document de valeur, comme un billet de banque, un passeport, une pièce d'identité ou similaire, comprenant une zone magnétique faiblement coercitive (24 ; 34 ; 44 ; 54), caractérisé en ce qu'il est prévu une zone magnétique hautement coercitive (22 ; 32 ; 42 ; 52), qui recouvre au moins en partie la zone magnétique faiblement coercitive (24 ; 34 ; 44 ; 54) et magnétise à l'état magnétisé la zone magnétique faiblement coercitive (24 ; 34 ; 44 ; 54).
  2. Elément de sécurité selon la revendication 1, caractérisé en ce que la zone magnétique faiblement coercitive contient une pluralité de zones partielles (24 ; 34 ; 44 ; 54) pouvant être magnétisées séparément.
  3. Elément de sécurité selon la revendication 2, caractérisé en ce que les zones partielles (24 ; 34 ; 44 ; 54) pouvant être magnétisées séparément forment des bits individuels destinés à stocker un code magnétique.
  4. Elément de sécurité selon la revendication 2 ou 3, caractérisé en ce que la zone magnétique fortement coercitive comporte une pluralité de zones partielles séparées (32), qui recouvrent au moins en partie respectivement une ou plusieurs des zones partielles faiblement coercitives (34).
  5. Elément de sécurité selon au moins l'une des revendications 1 à 4, caractérisé en ce que la zone magnétique fortement coercitive (22 ; 32 ; 42 ; 52) recouvre entièrement la zone magnétique faiblement coercitive (24 ; 34 ; 44 ; 54).
  6. Elément de sécurité selon au moins l'une des revendications 1 à 5, caractérisé en ce que la zone magnétique faiblement coercitive (24 ; 34 ; 44 ; 54) comprend une intensité de champ coercitif comprise entre approximativement 10 et approximativement 500 Oe (800 A/m à 40 kA/m), de préférence entre approximativement 150 et approximativement 350 Oe (12 kA/m à 28 kA/m).
  7. Elément de sécurité selon au moins l'une des revendications 1 à 6, caractérisé en ce que la zone magnétique faiblement coercitive (24 ; 34 ; 44 ; 54) est formée dans une couche de matériau qui contient des oxydes de fer, du fer pur, du nickel ou un autre matériau magnétique doux.
  8. Elément de sécurité selon au moins l'une des revendications 1 à 7, caractérisé en ce que la zone magnétique faiblement coercitive (24 ; 34 ; 44 ; 54) est formée dans une couche de matériau d'une épaisseur d'approximativement 0,05 µm à approximativement 20 µm.
  9. Elément de sécurité selon au moins l'une des revendications 1 à 8, caractérisé en ce que la zone magnétique fortement coercitive (22 ; 32 ; 42 ; 52) comprend une intensité de champ coercitif supérieure à approximativement 300 Oe (24 kA/m), de préférence supérieure à approximativement 1000 Oe (80 kA/m), de manière préférée entre toutes supérieure à approximativement 2000 Oe (160 kA/m).
  10. Elément de sécurité selon au moins l'une des revendications 1 à 9, caractérisé en ce que la zone magnétique fortement coercitive (22 ; 32 ; 42 ; 52) est formée dans une couche de matériau qui contient un alliage de fer/cobalt/nickel ou fer/cobalt/vanadium ou platine/cobalt ou aluminium/nickel/cobalt ou fer/cobalt/chrome ou samarium/cobalt ou samarium/cuivre ou samarium/fer ou samarium/zirconium ou néodyme/fer ou néodyme/bore ou un autre matériau magnétique dur.
  11. Elément de sécurité selon au moins l'une des revendications 1 à 10, caractérisé en ce que la zone magnétique fortement coercitive (22 ; 32 ; 42 ; 52) est formée dans une couche de matériau d'une épaisseur d'approximativement 0,05 µm à approximativement 20 µm.
  12. Elément de sécurité selon au moins l'une des revendications 1 à 11, caractérisé en ce que les zones magnétiques faiblement coercitive (24 ; 34 ; 44) et fortement coercitive (22 ; 32 ; 42) sont superposées sur un support commun (20 ; 30 ; 40).
  13. Elément de sécurité selon au moins l'une des revendications 1 à 11, caractérisé en ce que les zones magnétiques faiblement coercitive (54) et fortement coercitive (52) sont disposées sur les faces opposées d'un support commun (50).
  14. Elément de sécurité selon l'une quelconque des revendications 12 ou 13, caractérisé en ce que les zones magnétiques faiblement coercitive (24 ; 34 ; 44 ; 54) et fortement coercitive (22 ; 32 ; 42 ; 52) sont appliquées par un processus d'impression ou un processus de métallisation sous vide sur le support commun (20 ; 30 ; 40 ; 50).
  15. Elément de sécurité selon au moins l'une des revendications 1 à 14, caractérisé en ce qu'une autre zone magnétique fortement coercitive est prévue pour stocker un état de commutation de l'élément de sécurité.
  16. Elément de sécurité selon au moins l'une des revendications 1 à 15, caractérisé en ce qu'il est prévu une couche de recouvrement opaque au moins dans les zones partielles, qui dissimule la position et la disposition de la zone magnétique faiblement coercitive (24 ; 34 ; 44 ; 54).
  17. Elément de sécurité selon la revendication 16, caractérisé en ce que la couche de recouvrement comprend des évidements sous forme de signes ou de dessins, qui forment une information pouvant être lue visuellement et/ou par une machine.
  18. Elément de sécurité selon au moins l'une des revendications 1 à 17, caractérisé en ce que l'élément de sécurité forme un fil de sécurité (12), une bande de sécurité, un patch ou un élément de transfert (14) notamment sur une feuille de transfert.
  19. Papier de sécurité comprenant un élément de sécurité selon au moins l'une des revendications 1 à 18.
  20. Document de valeur, comme un billet de banque, une pièce d'identité ou similaire, comprenant un élément de sécurité (12, 14) selon au moins l'une des revendications 1 à 18.
  21. Document de valeur selon la revendication 20, caractérisé en ce que l'élément de sécurité (12, 14) est contenu sur un support (20 ; 30 ; 40 ; 50) dans le document de valeur.
  22. Document de valeur selon la revendication 20, caractérisé en ce que les zones faiblement coercitive (54) et fortement coercitive (52) de l'élément de sécurité sont disposées sur la même face ou sur la face opposée du document de valeur (50).
  23. Document de valeur selon ay moins l'une des revendications 20 à 22, caractérisé en ce que la zone magnétique faiblement coercitive (24 ; 34 ; 44 ; 54) de l'élément de sécurité est pourvue d'un code magnétique.
  24. Document de valeur selon au moins l'une des revendications 20 à 23, caractérisé en ce que le document de valeur est marqué par magnétisation de la zone magnétique fortement coercitive (22 ; 32 ; 42 ; 52) de l'élément de sécurité.
  25. Document de valeur selon au moins l'une des revendications 20 à 24, caractérisé en ce qu'il est prévu dans le document de valeur une autre zone magnétique fortement coercitive (16) destinée à stocker un état de commutation du document de valeur.
  26. Procédé de fabrication d'un élément de sécurité selon l'une quelconque des revendications 1 à 18, caractérisé en ce que les zones faiblement coercitive et fortement coercitive sont imprimées ou métallisées sous vide sur un substrat commun ou sur un document de valeur.
  27. Procédé de contrôle d'un document de valeur selon au moins l'une des revendications 20 à 25, dans lequel
    a) la zone magnétique faiblement coercitive de l'élément de sécurité ou des zones partielles de celui-ci sont magnétisées,
    b) la zone magnétique fortement coercitive de l'élément de sécurité est magnétisée, ou cas où le document de valeur doit être pourvu d'un marquage,
    c) la magnétisation rémanente de la zone magnétique faiblement coercitive ou des zones partielles de celle-ci est définie, et
    d) sur la base de la magnétisation rémanente définie, on constate si le document de valeur est pourvu ou non d'un marquage.
  28. Procédé selon la revendication 27, caractérisé en ce que la zone magnétique fortement coercitive à l'étape b) est magnétisée perpendiculairement à une direction de magnétisation prédéfinie de la zone magnétique faiblement coercitive.
  29. Procédé selon la revendication 27, caractérisé en ce que la zone magnétique fortement coercitive à l'étape b) est magnétisée parallèlement à une direction de magnétisation prédéfinie de la zone magnétique faiblement coercitive.
  30. Procédé selon au moins l'une des revendications 27 à 29, caractérisé en ce que le document de valeur contient un élément de sécurité étiré longitudinalement doté d'un axe longitudinal, et les zones partielles faiblement coercitives sont magnétisées dans une direction perpendiculaire à l'axe longitudinal.
  31. Procédé selon au moins l'une des revendications 27 à 30, caractérisé en ce qu'après un marquage du document de valeur, la zone magnétique fortement coercitive est démagnétisée, afin de pouvoir activer à nouveau le code magnétique faiblement coercitif de l'élément de sécurité.
  32. Procédé selon au moins l'une des revendications 27 à 31, caractérisé en ce que dans le cas où il est constaté que le document de valeur est marqué, le bon fonctionnement du document de valeur est modifié, en particulier limité.
EP04727525A 2003-04-16 2004-04-15 Element de securite et procede de verification pour un document de valeur Expired - Lifetime EP1618006B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL04727525T PL1618006T3 (pl) 2003-04-16 2004-04-15 Element zabezpieczający i sposób weryfikacji dokumentu wartościowego
SI200430153T SI1618006T1 (sl) 2003-04-16 2004-04-15 Varnostni element in postopek preizkusanja za vrednostni dokument

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10317810A DE10317810A1 (de) 2003-04-16 2003-04-16 Sicherheitselement und Prüfverfahren für ein Wertdokument
PCT/EP2004/003978 WO2004091930A1 (fr) 2003-04-16 2004-04-15 Element de securite et procede de verification pour un document de valeur

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Cited By (2)

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WO2012085773A1 (fr) 2010-12-22 2012-06-28 Arjowiggins Security Élément pour document de securité comportant une structure optique
EP2229286B1 (fr) 2008-01-15 2016-08-10 Fedrigoni S.P.A. Elément de sécurité, en particulier pour billets de banque, cartes de sécurité et similaires, comportant des caractéristiques anti-contrefaçon

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EP1714795A1 (fr) 2005-04-20 2006-10-25 Hueck Folien Ges.m.b.H Élément de sécurité avec un code magnétique spatialement séparé, la méthode et dispositif pour sa production et son application
DE102007025939A1 (de) * 2007-06-04 2008-12-11 Giesecke & Devrient Gmbh Sicherheitselement zur Absicherung von Wertdokumenten
EP2414176B1 (fr) 2009-04-01 2021-05-26 Fedrigoni S.P.A. Élément de sécurité comprenant des zones magnétiques de coercivités différentes et un procédé pour sa production
ITTO20100568A1 (it) * 2010-07-01 2012-01-02 Fabriano Securities Srl Sistema per codifiche magnetiche tramite deposito di aree magnetiche realizzate da almeno due tipi di inchiostri magnetici, con differente coercitivita', depositati in modo almeno parzialmente sovrapposto da utilizzare per fili di sicurezza per docum
FR2989932A1 (fr) 2012-04-27 2013-11-01 Arjowiggins Security Element de securite et document incorporant un tel element
FR3028801B1 (fr) 2014-11-24 2021-11-19 Arjowiggins Security Element de securite
CN108694769B (zh) * 2017-04-07 2020-07-24 深圳怡化电脑股份有限公司 检测纸张重张的方法及装置
CN107123185A (zh) * 2017-06-20 2017-09-01 深圳怡化电脑股份有限公司 一种有价文件磁性字符的识别装置及方法
WO2022096241A1 (fr) 2020-11-05 2022-05-12 Mantegazza Patrizia Giuseppina Élément de sécurité magnétique et son procédé de fabrication

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BE789503A (fr) * 1971-10-13 1973-01-15 Burroughs Corp
ATE139636T1 (de) * 1989-11-23 1996-07-15 Mantegazza A Arti Grafici Kode zur identifizierung von dokumenten und dergleichen und einheit zum abtasten von magnetischen kodes
US5697649A (en) * 1995-05-11 1997-12-16 Crane & Co., Inc. Articles employing a magnetic security feature
DE19650759A1 (de) * 1996-12-06 1998-06-10 Giesecke & Devrient Gmbh Sicherheitselement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2229286B1 (fr) 2008-01-15 2016-08-10 Fedrigoni S.P.A. Elément de sécurité, en particulier pour billets de banque, cartes de sécurité et similaires, comportant des caractéristiques anti-contrefaçon
WO2012085773A1 (fr) 2010-12-22 2012-06-28 Arjowiggins Security Élément pour document de securité comportant une structure optique

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ATE342174T1 (de) 2006-11-15
DE502004001737D1 (de) 2006-11-23
DE10317810A1 (de) 2004-11-04
PL1618006T3 (pl) 2007-03-30
WO2004091930A1 (fr) 2004-10-28
ES2274448T3 (es) 2007-05-16
EP1618006A1 (fr) 2006-01-25

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