WO2004091930A1 - 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
WO2004091930A1
WO2004091930A1 PCT/EP2004/003978 EP2004003978W WO2004091930A1 WO 2004091930 A1 WO2004091930 A1 WO 2004091930A1 EP 2004003978 W EP2004003978 W EP 2004003978W WO 2004091930 A1 WO2004091930 A1 WO 2004091930A1
Authority
WO
WIPO (PCT)
Prior art keywords
coercive
security element
magnetic region
low
document
Prior art date
Application number
PCT/EP2004/003978
Other languages
German (de)
English (en)
Inventor
Manfred Heim
Original Assignee
Giesecke & Devrient Gmbh
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 Giesecke & Devrient Gmbh filed Critical Giesecke & Devrient Gmbh
Priority to EP04727525A priority Critical patent/EP1618006B1/fr
Priority to DE502004001737T priority patent/DE502004001737D1/de
Priority to SI200430153T priority patent/SI1618006T1/sl
Priority to PL04727525T priority patent/PL1618006T3/pl
Publication of WO2004091930A1 publication Critical patent/WO2004091930A1/fr

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Classifications

    • 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, with a medico-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 counterfeit securities, such as passports and other identity cards, often incorporate or apply a security element to enhance anti-counterfeiting 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 41 01 301.
  • the security element has a magnetic coating with light gray to silvery soft magnetic pigments, which are admixed to a varnish and coated with this on a carrier material.
  • 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 authenticity testing 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.
  • Document DE 4022 739 A1 discloses a test device for documents equipped with magnetic properties, with which magnetic particles of low remanence can still be obtained 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 expense and associated 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-coherence magnetic region is provided which at least partially overlaps the low-coercive magnetic region and, in the magnetized state, magnetizes the low-coercive magnetic region, preferably bringing it into saturation.
  • magnetization of the low-coercive magnetic region or of partial regions thereof can be used to write in a magnetic code in a manner known per se. Subsequently, the magnetization of the low-coercive magnetic field be detected by a conventional sensor technology, 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 in turn comprise a plurality of separate subregions, each of which at least partially overlaps one or more of the low-coercive subregions. overlap.
  • 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 coercivity magnetic region suitably has a coercive 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 force 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 with a coercive field strength of up to about 4000 Oe (320 kA / m) are readily available industrially, with such high field strengths being quite advantageous in order to increase the security against unwanted extinction or reversal magnetizations.
  • 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 is provided 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.
  • step d) on the basis of the determined remanent magnetization it is ascertained whether the value document is marked or not.
  • 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 gnetcode can therefore 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.
  • Show it: 1 is a schematic representation of a banknote with embedded security thread and glued transfer element, each according to an embodiment of the invention
  • FIG. 2 shows the layer structure of the security thread of Fig. 1 in cross section
  • FIG. 3 is a plan view of the security thread of FIG. 2 with low-coercive magnetic regions as a magnetic code
  • FIG. 4 shows a plan view of the security thread of FIG. 2 with the magnetic code switched off in a first marked state
  • FIG. 5 shows a plan view of the security thread of FIG. 2 with the magnetic code switched off in a second marked state
  • Fig. 6 to 8 the layer structure of security threads according to further embodiments of the invention i cross-section.
  • 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, 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 Fig. 1 in cross section.
  • the security thread 12 has a transparent plastic film 20 serving as a substrate for the magnetic layers.
  • a continuous high-coercive magnetic layer 22 having a coercive force greater than 2000 Oe.
  • 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.
  • FIGS. 3 to 5 show a plan view of the security thread of FIG. 2 in different magnetization states.
  • 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 the magnetizations Mo (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 Mi.
  • the magnetic bits 24 are also magnetized in this state until their saturation magnetization along the longitudinal axis 26.
  • the remanent magnetization Mi 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 M2 of the high-coherence Cited 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 coded in a further highly 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 reversed.
  • the high-coercive and low-coercive magnetic layers 52, 54 may be disposed on different sides of the common substrate 50.
  • the coercive field strengths of the magnetic layers 52, 54 and the layer thickness of the substrate 50 must be matched to one another such that magnetization of the highly 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)

Abstract

L'invention concerne un élément de sécurité conçu pour un document de valeur tel qu'un billet de banque, un passeport, un document d'identité ou analogue, comprenant une zone magnétique à champ coercitif faible (24) servant à former un code magnétique. Selon l'invention, cet élément de sécurité comporte en outre une zone magnétique à champ coercitif élevé (22) qui chevauche au moins partiellement ladite zone magnétique à champ coercitif faible (24) et qui s'aimante, lorsque cette zone magnétique à champ coercitif faible (24) se trouve à l'état aimanté.
PCT/EP2004/003978 2003-04-16 2004-04-15 Element de securite et procede de verification pour un document de valeur WO2004091930A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP04727525A EP1618006B1 (fr) 2003-04-16 2004-04-15 Element de securite et procede de verification pour un document de valeur
DE502004001737T DE502004001737D1 (de) 2003-04-16 2004-04-15 Sicherheitselement und prüfverfahren für ein wertdokument
SI200430153T SI1618006T1 (sl) 2003-04-16 2004-04-15 Varnostni element in postopek preizkusanja za vrednostni dokument
PL04727525T PL1618006T3 (pl) 2003-04-16 2004-04-15 Element zabezpieczający i sposób weryfikacji dokumentu wartościowego

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
DE10317810.4 2003-04-16

Publications (1)

Publication Number Publication Date
WO2004091930A1 true WO2004091930A1 (fr) 2004-10-28

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Family Applications (1)

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PCT/EP2004/003978 WO2004091930A1 (fr) 2003-04-16 2004-04-15 Element de securite et procede de verification pour un document de valeur

Country Status (6)

Country Link
EP (1) EP1618006B1 (fr)
AT (1) ATE342174T1 (fr)
DE (2) DE10317810A1 (fr)
ES (1) ES2274448T3 (fr)
PL (1) PL1618006T3 (fr)
WO (1) WO2004091930A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2010113192A1 (fr) * 2009-04-01 2010-10-07 Fabriano Securities S.R.L. Élément de sécurité comprenant des zones magnétiques de coercivités différentes, procédé pour sa production et procédé pour lire des informations codées dans l'élément
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
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
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
CN108694769A (zh) * 2017-04-07 2018-10-23 深圳怡化电脑股份有限公司 检测纸张重张的方法及装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007025939A1 (de) 2007-06-04 2008-12-11 Giesecke & Devrient Gmbh Sicherheitselement zur Absicherung von Wertdokumenten
FR2969670B1 (fr) 2010-12-22 2013-09-20 Arjowiggins Security Element pour document de securite comportant une structure optique
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
EP4232299A1 (fr) 2020-11-05 2023-08-30 Mantegazza, Patrizia Giuseppina Élément de sécurité magnétique et son procédé de fabrication

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GB1392038A (en) * 1971-10-13 1975-04-23 Burroughs Corp Record media
EP0428779A1 (fr) * 1989-11-23 1991-05-29 MANTEGAZZA ANTONIO ARTI GRAFICHE S.r.l. Code d'identification de documents ou similaires, et unité de détection de codes magnétiques
US5697649A (en) * 1995-05-11 1997-12-16 Crane & Co., Inc. Articles employing a magnetic security feature
WO1998025236A1 (fr) * 1996-12-06 1998-06-11 Giesecke & Devrient Gmbh Element de securite

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
GB1392038A (en) * 1971-10-13 1975-04-23 Burroughs Corp Record media
EP0428779A1 (fr) * 1989-11-23 1991-05-29 MANTEGAZZA ANTONIO ARTI GRAFICHE S.r.l. Code d'identification de documents ou similaires, et unité de détection de codes magnétiques
US5697649A (en) * 1995-05-11 1997-12-16 Crane & Co., Inc. Articles employing a magnetic security feature
WO1998025236A1 (fr) * 1996-12-06 1998-06-11 Giesecke & Devrient Gmbh Element de securite

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8646688B2 (en) 2005-04-20 2014-02-11 Hueck Folien Ges.M.B.H. Security element with spatially resolved magnetic coding, method and device for the production of the same and its use
WO2006111358A2 (fr) * 2005-04-20 2006-10-26 Hueck Folien Ges.M.B.H. Element de securite presentant un codage magnetique a resolution spatiale, procede et dispositif de production de cet element et utilisation dudit element
WO2006111358A3 (fr) * 2005-04-20 2006-12-07 Hueck Folien Gmbh Element de securite presentant un codage magnetique a resolution spatiale, procede et dispositif de production de cet element et utilisation dudit element
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
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
WO2010113192A1 (fr) * 2009-04-01 2010-10-07 Fabriano Securities S.R.L. Élément de sécurité comprenant des zones magnétiques de coercivités différentes, procédé pour sa production et procédé pour lire des informations codées dans l'élément
US8584948B2 (en) 2009-04-01 2013-11-19 Fedrigoni S.P.A. Security element comprising magnetic areas of different coercivities, a method for its production and a method for reading information encoded in the element
RU2508992C2 (ru) * 2009-04-01 2014-03-10 Федригони С.П.А. Элемент защиты, содержащий магнитные зоны с разной коэрцитивностью, способ его изготовления и способ считывания информации, закодированной в элементе
WO2012000568A1 (fr) * 2010-07-01 2012-01-05 Fabriano Securities S.R.L. Système de codage magnétique avec dépôt de zones magnétiques produites par au moins deux types d'encre magnétique à champs coercitifs différents déposés en recouvrement au moins partiel
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
CN108694769A (zh) * 2017-04-07 2018-10-23 深圳怡化电脑股份有限公司 检测纸张重张的方法及装置
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

Also Published As

Publication number Publication date
EP1618006B1 (fr) 2006-10-11
EP1618006A1 (fr) 2006-01-25
DE10317810A1 (de) 2004-11-04
ATE342174T1 (de) 2006-11-15
PL1618006T3 (pl) 2007-03-30
DE502004001737D1 (de) 2006-11-23
ES2274448T3 (es) 2007-05-16

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