EP2246824A2 - Elément de sécurité pour le contrôle d'authenticité d'un objet de sécurité et procédé de contrôle d'authenticité de celui-ci - Google Patents

Elément de sécurité pour le contrôle d'authenticité d'un objet de sécurité et procédé de contrôle d'authenticité de celui-ci Download PDF

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Publication number
EP2246824A2
EP2246824A2 EP10004426A EP10004426A EP2246824A2 EP 2246824 A2 EP2246824 A2 EP 2246824A2 EP 10004426 A EP10004426 A EP 10004426A EP 10004426 A EP10004426 A EP 10004426A EP 2246824 A2 EP2246824 A2 EP 2246824A2
Authority
EP
European Patent Office
Prior art keywords
layer
metallized
protective element
protective
island
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Withdrawn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
EP10004426A
Other languages
German (de)
English (en)
Other versions
EP2246824A3 (fr
Inventor
Igor E. Protsenko
Anatoly P. Boltaev
Fedor A. Pudonin
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.)
OOO "NOVYE ENERGETICHESKIE TEHNOLOGII"
GOLSEN Ltd
Original Assignee
OOO "Novye Energeticheskie Tehnologii"
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 OOO "Novye Energeticheskie Tehnologii" filed Critical OOO "Novye Energeticheskie Tehnologii"
Publication of EP2246824A2 publication Critical patent/EP2246824A2/fr
Publication of EP2246824A3 publication Critical patent/EP2246824A3/fr
Withdrawn legal-status Critical Current

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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
    • G07D7/02—Testing electrical properties of the materials thereof

Definitions

  • the invention relates to a protective element for checking the authenticity of a subject of protection according to the preamble of claim 1 and a method for unit testing thereof.
  • the invention can be used in the field of anti-counterfeiting of a subject of protection, in particular of securities, bills and documents.
  • Such marks may be applied directly to the subject of protection, e.g. B. as a color:
  • the protection marks can also be used as a specially crafted protection agent, eg. B. as a metal strip, are placed in the subject matter.
  • a two-sided information carrier is used. On its front and back two images (magnetic marks) are made by applying a special magnetic mixture. The pictures are aligned with each other in a certain way.
  • the detection is based on a magnetic semiconductor encoder.
  • the magnetic encoder simultaneously reads the information from the front and back of the information carrier.
  • the output of the semiconductor generator is passed through an intricate circuit for pulse generation at the image boundaries of the magnetic marks.
  • the magnetic information on the carrier is detected at these pulses by comparing this data with the given (reference) information ( JP, Application No. 057-177372 , AI. G 07 D 7/00, 1984).
  • a method for protecting the securities against counterfeiting using a passive means of protection is known.
  • the passive protective agent having a predetermined structure is formed on the security.
  • the presence of this protective agent on the security is detected by detecting the informational features in the response of the protection means to a scanning electromagnetic radiation of predetermined radio frequency.
  • the acquired information features are automatically compared with the reference values.
  • a passive protective agent a metallized at least three-layer resonant filter structure is used.
  • scanning radiation the radio frequency from the SHF range is used.
  • information characteristics characteristic peak values of the frequency characteristic of the coefficients of the direct transmission and the return radiation are used.
  • the closest prior art to the claimed preservative according to the present invention is a method of protecting the securities and the products with protective stripes of a particular structure. This procedure is in the RU 2291490 and was chosen as the prototype for this invention.
  • the known protective strips are composed of several different components, coding means and conductive layers, which are based on different Way coupled with the pad. These protective strips are applied to the value product or embedded therein.
  • the technical result of the invention of these known protective strips is the production of a coded system. This system is characterized by a freely selectable combination of metallized surfaces with certain gloss level, conductivity and resistivity change depending on the strip, which is known only to the manufacturer, and creates insurmountable difficulties in counterfeiting.
  • the protective element is made on the basis of nano island (island) or granulated metal films. These films are capable, under ordinary conditions, of their electrophysical properties (eg conductivity) in small electric fields, that is to say in electric fields with a thickness of less than 50 V / cm.
  • a protected area is formed on a small piece of the object of protection (eg paper), e.g. B. a strip which may be unrecognizable to the naked eye.
  • this protection region contains a protective element which has the island or granulated metal film which has non-linear electrophysical properties.
  • Authentication is from a simple electronic device ( Fig. 3 ) performed.
  • This device checks the nonlinearity of the electrophysical properties (eg, conductivity) of the guard area while a weak electric field is applied thereto.
  • the presence of non-linear electrophysical properties indicates the authenticity of the object. If there are no electrophysical properties, this indicates a falsification.
  • Both contact and contactless testing methods are possible, the test time being less than 10 -3 sec.
  • an island or granulated metal film having one or more layers is used as the protective element.
  • the film is arranged on a base of the actual security (eg in the case of a banknote) or on a specially produced fine dielectric base (eg lavsan) which is embedded in the object to be protected.
  • the outer surface of the metal film is protected against weathering and against premature aging by a dielectric layer.
  • the conductivity of the Ti, FeNi or Co island films having an effective thickness of 7 angstroms is changed by 12% from 1 MOhm -1 to 1.12 at a change in the applied electric field of 1 V / cm to 10 V / cm MOhm -1 .
  • the quality protection of the objects to be protected is determined above all by the uniqueness of the properties of the island metal films.
  • these films a considerable change in conductivity under the action of a weak electric field is observed.
  • the conductivity change is under the action of the electric field in different materials, eg. B. in semiconductors, observed at an electric field strength F >> 1000 V / cm.
  • F 1 ⁇ 50 V / cm.
  • the quality protection of the objects to be protected is also ensured by the uniqueness of the procedural process in the production of island and granulated metal films.
  • the islands must actually have dimensions of about 10 nm. Between these islands a tunnel line at room temperature has to be reached. This is the main reason for non-linear electrophysical properties of these films.
  • the procedural parameters must be strictly adhered to during the production of the films. These parameters represent the know-how of the process and can neither be determined nor reproduced by hand without the necessary equipment and qualified personnel being used. In particular, the temperature conditions for the growth of the films must be strictly adhered to by ensuring a predetermined rate of their growth and so on. On the other hand, the execution of this procedural process in modern production no difficulties.
  • various manufacturing methods can be used, such.
  • high-frequency sputtering of the metal targets thermal metal atomization or production of granulated metal films.
  • the above-mentioned methods are well developed and ensure low cost and reliability in mass production of protection products for the value products.
  • Fine island or granulated metal films (20) of common metals e.g. As Ti, W, or ferromagnetic metals, for.
  • Co, Fe, or non-magnetic metal alloys eg. B. WRe, NiCr, or magnetic metal alloys, eg. FeNi, FeCo, are grown by RF sputtering under argon on a dielectric Underlay (1) bred.
  • the thickness of the metal films (20) is varied in the range of 7 ⁇ to 30 ⁇ depending on the characteristics of the dielectric substrate (10).
  • the characteristic 100 stands for Ti; 200 for FeNi; 300 for Co; 400 for W and conductivity ⁇ 1 MO M -1 stands for the field strength F ⁇ 1 V / cm).
  • the differential conductivity in%, plotted on the vertical axis of the Fig. 2 is considered a feature of the uniqueness of the characteristics of this film, as the "brand" for the protection of securities. Such relationships are not achievable under normal conditions in conventional materials.
  • Fig. 3 the circuit diagram of a measuring device (the detector) is shown.
  • the metal electrodes 2 and 5 are pressed (attached) to the structure 1. This makes it possible to produce resistance contacts (capacitance contacts).
  • a low frequency voltage (up to 100 kHz) or an electric pulse voltage is applied to the electrodes 2 and 5.
  • the voltage amplitude must be several times greater (eg 10 times) than at the electrode 2.
  • the maximum electric field strength in the film must not exceed 50 V / cm.
  • the limitation of the size of the electric field is due to the unique properties of the islands, namely their ability to change their electrophysical properties in small electric fields.
  • the electrodes 3 and 4 are grounded via the same terminating resistors 6.
  • a voltage proportional to the current flows from the terminating resistors 6 to the amplifiers 7 and 8.
  • the gain factor of the amplifier 7 is 10 times as great as the gain factor of the amplifier 8.
  • the signals from the amplifiers 7 and 8 arrive in an adder 9 . If the Structure has non-linear effects, then the signals arriving from the outputs of the amplifier 7 and 8 will be different in absolute value. At the output of the adder 9, the signal Uc will be present. This testifies to the authenticity of the product. If the structure does not have any non-linear properties, the signals from the outputs of the amplifiers 7 and 8 will be equal in absolute value. Thus, the signal Uc at the output of the adder 9 will be zero. This proves a falsification of the product.
  • this protection area must move with the film with respect to the electrodes.
  • the pulse signals on the terminators will be released.
  • the duration of the interaction of the detector with the film can be less than 10 -3 sec.
  • Fig. 3 The basic scheme of determining the authenticity of securities by means of the measurement of the harmonic signal from the frequency of the scanning alternating electric field is in Fig. 3 shown.
  • the metal electrodes 2 and 3 are pressed (attached) to the structure 1. This makes it possible to produce resistance contacts (capacitance contacts).
  • the scanning alternating electric field is generated in the film. Its amplitude must not exceed 50 V / cm.
  • the harmonic signal is secreted on the terminating resistor 6 and detected by the Selektivlogiesmessers 9.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Credit Cards Or The Like (AREA)
EP10004426A 2009-04-28 2010-04-27 Elément de sécurité pour le contrôle d'authenticité d'un objet de sécurité et procédé de contrôle d'authenticité de celui-ci Withdrawn EP2246824A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2009115821/08A RU2406152C1 (ru) 2009-04-28 2009-04-28 Защитный элемент для проверки подлинности объекта защиты и способ проверки подлинности

Publications (2)

Publication Number Publication Date
EP2246824A2 true EP2246824A2 (fr) 2010-11-03
EP2246824A3 EP2246824A3 (fr) 2011-07-27

Family

ID=42359431

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10004426A Withdrawn EP2246824A3 (fr) 2009-04-28 2010-04-27 Elément de sécurité pour le contrôle d'authenticité d'un objet de sécurité et procédé de contrôle d'authenticité de celui-ci

Country Status (2)

Country Link
EP (1) EP2246824A3 (fr)
RU (1) RU2406152C1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057520A2 (fr) 1981-01-16 1982-08-11 Kabushiki Kaisha Toshiba Appareil pour la détection d'un ruban magnétique encastré dans du papier
RU2276409C2 (ru) 2004-07-08 2006-05-10 Объединение государственных предприятий и организаций по производству государственных знаков Минфина РФ (Объединение "ГОЗНАК") Способ защиты от подделки и контроля подлинности ценных изделий
RU2291490C2 (ru) 2001-03-01 2007-01-10 ВХД Электронише Прюфтехник ГмбХ Защитные полосы

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH529395A (de) * 1971-03-23 1972-10-15 Landis & Gyr Ag Verfahren zur Herstellung eines Wertzeichens
DE19718916A1 (de) * 1997-04-25 1998-10-29 Whd Elektron Prueftech Gmbh Anwendung und Verfahren zur Prüfung von Kokumenten mit beugungsoptisch wirksamen Sicherheitsschichten
DE19812812A1 (de) * 1997-04-25 1999-09-23 Whd Elektron Prueftech Gmbh Aufbau von Sicherheitselementen für Dokumente und Vorrichtungen zur Prüfung von Dokumenten mit derartigen Sicherheitselementen sowie Verfahren zur Anwendung
DE19812811A1 (de) * 1997-08-12 1999-09-23 Whd Elektron Prueftech Gmbh Aufbau von Sicherheitselementen für Dokumente und Vorrichtungen zur Prüfung von Dokumenten mit derartigen Sicherheitselementen sowie Verfahren zur Anwendung dieser Sicherheitselemente und Vorrichtungen
DE19928059A1 (de) * 1998-06-16 2000-12-21 Whd Elektron Prueftech Gmbh Elektrisch leitender Merkmalsstoff
DE10064616C2 (de) * 2000-12-22 2003-02-06 Ovd Kinegram Ag Zug Dekorfolie und Verfahren zum Beschriften der Dekorfolie
DE10163381A1 (de) * 2001-12-21 2003-07-03 Giesecke & Devrient Gmbh Sicherheitspapier sowie Verfahren und Vorrichtung zu seiner Herstellung
DE10207622A1 (de) * 2002-02-22 2003-09-04 Giesecke & Devrient Gmbh Sicherheitsdokument und Sicherheitselement für ein Sicherheitsdokument
DE102005021514B4 (de) * 2005-05-10 2020-10-29 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
WO2008034478A1 (fr) * 2006-09-22 2008-03-27 Alcan Technology & Management Ltd. Substrats munis de caractéristiques de sécurité et procédé pour leur fabrication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057520A2 (fr) 1981-01-16 1982-08-11 Kabushiki Kaisha Toshiba Appareil pour la détection d'un ruban magnétique encastré dans du papier
RU2291490C2 (ru) 2001-03-01 2007-01-10 ВХД Электронише Прюфтехник ГмбХ Защитные полосы
RU2276409C2 (ru) 2004-07-08 2006-05-10 Объединение государственных предприятий и организаций по производству государственных знаков Минфина РФ (Объединение "ГОЗНАК") Способ защиты от подделки и контроля подлинности ценных изделий

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Publication number Publication date
RU2406152C1 (ru) 2010-12-10
EP2246824A3 (fr) 2011-07-27

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