EP2453418A1 - Procédé et dispositif de contrôle de l'authenticité de chèques dotés de fenêtres de sécurité - Google Patents

Procédé et dispositif de contrôle de l'authenticité de chèques dotés de fenêtres de sécurité Download PDF

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Publication number
EP2453418A1
EP2453418A1 EP11007877A EP11007877A EP2453418A1 EP 2453418 A1 EP2453418 A1 EP 2453418A1 EP 11007877 A EP11007877 A EP 11007877A EP 11007877 A EP11007877 A EP 11007877A EP 2453418 A1 EP2453418 A1 EP 2453418A1
Authority
EP
European Patent Office
Prior art keywords
radiation
banknote
sensor
wavelength
range
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.)
Granted
Application number
EP11007877A
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German (de)
English (en)
Other versions
EP2453418B1 (fr
Inventor
Armin Dr. Stöckli
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.)
BEB Industrie Elektronik AG
Original Assignee
BEB Industrie Elektronik AG
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 BEB Industrie Elektronik AG filed Critical BEB Industrie Elektronik AG
Publication of EP2453418A1 publication Critical patent/EP2453418A1/fr
Application granted granted Critical
Publication of EP2453418B1 publication Critical patent/EP2453418B1/fr
Active 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
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • 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
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • 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
    • B42D25/387—Special inks absorbing or reflecting ultraviolet light
    • 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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/1205—Testing spectral properties

Definitions

  • the invention is based on a method and a device for checking the authenticity of banknotes with at least one completely or partially transparent security window.
  • Banknotes can have transparent, semi-transparent or semi-transparent security windows.
  • the banknote can consist of a banknote substrate which is made up of several layers.
  • the windows are preferably made of a transparent polymer layer, which are equipped with a fluorescent substance in the UV wavelength range.
  • the polymer layer can be provided with special UV pigments, which absorb the incident UV radiation and pass into an excited energy level. Upon return to the initial energetic state, radiation of a longer wavelength than the exciting radiation is emitted. The wavelength of the emitted radiation depends on the UV pigments.
  • the detection of the emitted radiation can serve to detect the window of a banknote by means of suitable sensors.
  • a real banknote with window can be distinguished from a counterfeit banknote which instead of a window has only one hole or contains a window without UV pigments.
  • further recognition features can also be integrated into the polymer layer or the other layers of the banknote substrate. This is preferably done by additives that are already integrated in the production or applied by coating or printing. These additions are also referred to as taggants. They are authenticated to authenticate banknotes by means of suitable sensors. This happens, for example, by exciting the additives with radiation certain wavelength and by detection of emitted and / or reflected radiation.
  • the remaining banknote substrate is equipped with at least one layer which has no or at most a negligible emission and reflection when irradiated in the UV wavelength range.
  • the banknote substrates may be provided, for example, with TiO 2 .
  • TiO 2 is a stable, white, non-fluorescent pigment with good spreading properties.
  • Incident UV radiation is absorbed due to the TiO 2 , without causing any significant emission.
  • the banknote does not fluoresce in the UV range.
  • a genuine bill can be distinguished from a forgery made of, for example, ordinary paper used in printers and copiers.
  • This known copy paper is equipped with fluorescent whitening agents. If this paper is exposed to UV radiation, it preferably emits in the visible wavelength range. Real banknotes can thus be distinguished from counterfeit notes by the absence of UV fluorescence.
  • the object of the present invention is to provide a method and a device with which both the UV fluorescence of the window of a banknote and the absence of UV fluorescence of the remaining banknote can be detected in one step and with one sensor ,
  • the inventive method is characterized in that the banknotes are irradiated with radiation of a wavelength in the UV range of the spectrum.
  • the irradiation takes place in such a way that the entire banknote is exposed to the irradiation of the wavelength in the UV range. This happens for example, by means of a radiation source which irradiates the banknotes in an elongate section.
  • the width of the section is for example 5 to 20 mm. Over the width results, for example, a parabolic illumination profile, which has a maximum in the middle. This position is ideal for the placement of a sensor.
  • the banknotes are transported in a transporting direction perpendicular to the longitudinal direction of the elongated section. During transport, the banknotes are moved relative to the radiation source, so that the entire banknote is irradiated. In addition, a large-area irradiation of the banknote can also take place.
  • the radiation emitted and / or reflected by the banknote is detected spatially resolved by means of a sensor.
  • the sensitivity of the sensor in the region of the wavelength of the exciting radiation is smaller than in the region of the radiation emitted by the banknote or the sensor has no sensitivity in the region of the wavelength of the exciting radiation.
  • the wavelength of the exciting radiation is outside the sensitivity range of the sensor.
  • the sensitivity range of the sensor has a lower limit and an upper limit of the detected wavelengths. Wavelengths outside these limits are not detected by the sensor and are not detected.
  • the low or absent sensitivity in the region of the wavelength of the exciting and incident radiation results in that the radiation reflected by the banknote is not detected or with substantially lower sensitivity than the radiation emitted by fluorescence from the banknote. It is particularly advantageous if the product of the fluorescence-free direct scattering of the genuine banknotes on the one hand and the sensitivity of the sensor in the range of the wavelength of the incident radiation on the other hand is smaller than the product of the fluorescence to be examined at the wavelength ⁇ on the one hand and the sensitivity of Sensor in the region of this wavelength ⁇ on the other hand. This applies in particular to the intensity of the fluorescence-free direct scattering and the intensity of the Fluorescence.
  • the direct scattering power of the banknotes is small at those wavelengths at which the banknotes absorb the UV radiation due to certain pigments.
  • the banknote In the area of the window, the banknote has a UV fluorescence.
  • the incident radiation causes a transition of the UV pigments in the polymer layer of the window to an excited energy level.
  • a radiation of a wavelength which is greater than the wavelength of the exciting radiation is emitted in the region of the window of the banknote.
  • This wavelength of the emitted radiation is part of the sensitivity range of the sensor. It is therefore detected by the sensor. In this way, by means of a sensor, a window of a genuine banknote equipped with UV pigments can be distinguished from the window of a counterfeit banknote which has no corresponding UV pigments.
  • the incident UV radiation is absorbed without fluorescence of a wavelength which lies within the sensitivity range of the sensor. This is due to the banknote substrate, which has no UV fluorescence.
  • the banknote substrate is equipped with TiO 2 for this purpose, for example. These include rutile and anatase. TiO 2 also has the property that radiation in the UV wavelength range is not or only to a limited extent reflected. In the case of rutile, the reflection is small at wavelengths smaller than about 380 nm. In the case of anatase, the reflection is small at wavelengths smaller than about 350 nm. In any case, the sensor does not detect radiation emitted by the area outside the window of a genuine banknote. In this way, a genuine banknote can be distinguished from a counterfeit banknote from a substrate having a UV fluorescence.
  • the sensor detects the entire surface of a banknote facing it.
  • the sensor may be a line sensor act.
  • the bill is moved relative to the sensor in a transport direction that is perpendicular to the longitudinal direction of the line sensor.
  • the line sensor preferably consists of a plurality of sensor elements, so that the radiation emitted by a banknote radiation can be detected spatially resolved.
  • the radiation emitted upon excitation with radiation from a real banknote with window has a characteristic profile.
  • the window is clearly recognizable as a signal in this profile, while the remainder of the bill appears dark in the absence of UV fluorescence.
  • This signal is quantitatively greater than the UV fundamental fluorescence of the remainder of the banknote substrate plus the direct radiation reflected from the remainder of the banknote substrate.
  • a banknote can have further features that can be recognized in the UV range, which also generate a signal when irradiated in the UV range at the sensor. Such features may be printed on a banknote or integrated into the banknote substrate as fibers.
  • both the UV fluorescence of the window of a banknote and the absence of UV fluorescence of the area outside the window of a banknote can be detected with a sensor and in one step.
  • the irradiation of the banknote takes place with a radiation whose wavelength is less than 380 nm.
  • a radiation whose wavelength is less than 380 nm This is particularly advantageous when the banknotes have TiO 2 rutile.
  • the incident and the excitation of the UV pigments of the window of a banknote serving radiation for example, have a wavelength of 365 nm.
  • the irradiation of the banknote takes place with radiation whose wavelength is less than 350 nm. This is particularly advantageous if the banknotes have anatase as TiO 2 .
  • only radiation is detected with the sensor whose wavelength is greater than 380 nm with the sensor.
  • a wavelength of 380 nm forms the lower limit of the sensitivity range of the sensor.
  • the upper limit can be in the red or infrared spectral range, so that in the case of fluorescence, radiation with a wavelength in the visible or infrared spectral range can be detected.
  • the radiation reflected and / or emitted by the entire surface of a banknote facing the sensor is detected.
  • a sensor scans the entire surface of a banknote, or that a sensor has a plurality of sensor elements arranged in one dimension, and that the sensor and banknote are moved relative to one another.
  • the device according to the invention for checking the authenticity of banknotes with transparent security windows with the features of claim 6 is characterized in that it is equipped with at least one UV radiation source which irradiates a banknote with radiation of a wavelength or a wavelength range of the UV spectral range , Furthermore, it is equipped with at least one sensor which records, with spatial resolution, the radiation reflected and / or emitted by the banknote.
  • the sensor has a sensitivity range with an upper limit and a lower limit. Wavelengths that are within the sensitivity range are detected by the sensor. Wavelengths outside the sensitivity range are not detected by the sensor.
  • the wavelength of the radiation source is either less than the lower limit of the sensitivity range of the sensor or the sensitivity of the sensor in the range of the wavelength of the exciting radiation is smaller than in the area of the radiation emitted by the banknote.
  • the sensor thus preferably detects radiation which is emitted by a banknote and whose wavelength is greater than the wavelength of the radiation source.
  • the upper limit of the wavelength is advantageously set so that the sensor detects the entire visible spectral range. In this way, the sensor can be used to detect emitted and / or reflected radiation in the entire visible spectral range.
  • the sensor can be used not only for detection according to the method according to the invention but also for further checking methods in banknotes.
  • the large sensitivity range is advantageous. A single sensor can be used for all verification procedures.
  • the UV radiation source on several juxtaposed in a row UV LEDs. These serve to illuminate the radiation source facing surface within an elongate portion.
  • the UV LEDs can be arranged in one dimension. If the banknote is moved relative to the LEDs in a transport direction perpendicular to the row of LEDs, then the entire banknote is illuminated.
  • the wavelengths of the UV radiation source are smaller than 380 nm. This has the advantage that, in combination with a sensor which detects only wavelengths greater than 380 nm, the radiation reflected from a banknote whose wavelength is identical is with the wavelength of the UV radiation source, not captured and thus faded out.
  • the wavelengths of the UV radiation source are less than 350 nm.
  • the senor has a line sensor, to which the banknotes are moved at a relative speed. In this way, the entire radiation emitted by the surface of a banknote can be detected.
  • the lower limit of the sensitivity range of the sensor is 380 nm.
  • FIG. 1 shows a banknote 1 of a polymer substrate with a transparent window 2.
  • the banknote substrate has two polymer layers 3 and 4, between which a Lamination layer 5 is arranged.
  • UV pigments are embedded, which provide for UV fluorescence.
  • the UV pigments may alternatively or cumulatively be embedded in the polymer layer.
  • more taggants can be integrated.
  • the polymer layers 3 and 5 and the lamination layer 5 are transparent. They are covered to the outside by two opaque layers 6 and 7.
  • the two opaque layers 6 and 7 have openings in the region of the window 2, so that the transparent polymer layers 3 and 4 with the lamination layer 5 are visible.
  • the note image of the banknote is printed.
  • the two opaque layers with TiO 2 which serves as a UV-absorbing, non-fluorescent Weissmacher here.
  • the banknote 1 is transported by means of a transport device not shown in the drawing in a transport direction which is directed perpendicular to the illustrated image plane.
  • a plurality of UV radiation sources 8 are arranged in the form of UV LEDs which irradiate the entire upwardly facing surface of the banknote 1.
  • the radiation striking the opaque layer 6 is absorbed. There is no reflection and no emission due to fluorescence due to the TiO 2 contained in the opaque layer.
  • the UV radiation impinging on the polymer layer 3 in the region of the window reaches the lamination layer where it leads to fluorescence.
  • the emitted radiation has a greater wavelength than the incident radiation of the UV radiation sources. It is detected by a sensor, not shown in the drawing. This sensor has the property that it can not detect radiation in the wavelength range of the UV radiation source. It is sensitive only to the larger wavelengths of emitted radiation. As the sensor detects the radiation in a spatially resolved manner, the bank note appears dark to the area of the window.
  • FIG. 2 a banknote 10 is shown from a paper substrate.
  • the banknote also has a window 11.
  • the banknote substrate has two Paper layers 12 and 13, which are equipped with TiO 2 as a non-fluorescent Weissraum. Between the two paper layers 12 and 13, a transparent polymer layer 14 is embedded, in which UV pigments are embedded as Taggants.
  • the two paper layers 12 and 13 have openings in the region of the window 11, so that the polymer layer 14 is visible. If UV radiation of the UV radiation sources 8 falls on the banknote 11 in the region of the window 11, this radiation is absorbed and emits radiation having a greater wavelength than the incident radiation. This can be detected by a sensor, not shown in the drawing. For this sensor applies as appropriate for the FIG. 1 mentioned sensor.
  • the UV radiation striking the bill 10 outside the window is absorbed without reflection or emission taking place. Even with this banknote, the sensor detects radiation only in the region of the window 11. In addition, the banknote for the sensor appears dark.
  • FIG. 3 a further embodiment of a banknote 15 is shown from a paper substrate.
  • the window 16 is a semi-transparent window. Only one of the two paper layers, namely the paper layer 12, has an opening.
  • the second paper layer 17 of the banknote 15 is not provided with an opening in the region of the window 16.
  • the banknote can be irradiated from two sides by radiation sources 8 in order to detect the differences with respect to the window.
  • the UV fluorescence of the polymer layer 14 can only be detected on one side of the banknote. In the area of the banknote surrounding the window and on the side of the banknote 15 facing away from the window 16, no UV fluorescence can be detected, since the paper layer contains TiO 2 .

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
EP11007877.1A 2010-11-12 2011-09-28 Procédé et dispositif de contrôle de l'authenticité de chèques dotés de fenêtres de sécurité Active EP2453418B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010051087A DE102010051087A1 (de) 2010-11-12 2010-11-12 Verfahren und Vorrichtung zur Überprüfung der Echtheit von Banknoten mit Sicherheitsfenstern

Publications (2)

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EP2453418A1 true EP2453418A1 (fr) 2012-05-16
EP2453418B1 EP2453418B1 (fr) 2017-12-20

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EP (1) EP2453418B1 (fr)
DE (1) DE102010051087A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014191084A1 (fr) * 2013-05-31 2014-12-04 Giesecke & Devrient Gmbh Substrat de sécurité
EP2818326A1 (fr) * 2013-06-26 2014-12-31 Giesecke & Devrient GmbH Substrat de sécurité

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019120048A1 (de) 2019-07-24 2021-01-28 Bundesdruckerei Gmbh Wert- oder Sicherheitsdokument sowie Verfahren zu dessen Herstellung

Citations (4)

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US4296326A (en) * 1979-03-06 1981-10-20 Thomas De La Rue & Company Limited Watermark detection
US5909503A (en) * 1990-02-05 1999-06-01 Cummins-Allison Corp. Method and apparatus for currency discriminator and authenticator
WO2002041264A1 (fr) * 2000-11-20 2002-05-23 De La Rue International Limited Appareil de manipulation de documents
EP1220165A2 (fr) * 2000-12-26 2002-07-03 Glory Ltd. Appareil pour détecter la fluorescence ultra-violet et méthode de détection correspondante

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AT403967B (de) * 1992-11-18 1998-07-27 Oesterr Nationalbank Dokument und folienaufbau zur herstellung eines dokumentes
DE10027726A1 (de) * 2000-06-03 2001-12-06 Bundesdruckerei Gmbh Sensor für die Echtheitserkennung von Signets auf Dokumenten
EP1237128B1 (fr) * 2001-03-01 2012-08-01 Sicpa Holding Sa Détecteur de caractéristiques de luminescence amélioré
DE10160578A1 (de) * 2001-12-10 2004-02-12 Giesecke & Devrient Gmbh Verfahren und Vorrichtung für die Überprüfung der Echtheit von Blattgut
DE10238568A1 (de) * 2002-08-22 2004-03-04 Giesecke & Devrient Gmbh Vorichtung und Verfahren zur Untersuchung der Lumineszenzeigenschaften von Dokumenten
DE102004021397A1 (de) * 2004-04-30 2005-11-24 Bundesdruckerei Gmbh Vorrichtung und Verfahren zur Echtheitsüberprüfung eines mit einem Sicherheitsmerkmal versehenen Sicherheits- oder Wertdokuments, das auf einem Träger aufgebracht ist
DE102004055761A1 (de) * 2004-11-18 2006-05-24 Giesecke & Devrient Gmbh Wertdokumente, Herstellung und Prüfung von Wertdokumenten
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296326A (en) * 1979-03-06 1981-10-20 Thomas De La Rue & Company Limited Watermark detection
US5909503A (en) * 1990-02-05 1999-06-01 Cummins-Allison Corp. Method and apparatus for currency discriminator and authenticator
WO2002041264A1 (fr) * 2000-11-20 2002-05-23 De La Rue International Limited Appareil de manipulation de documents
EP1220165A2 (fr) * 2000-12-26 2002-07-03 Glory Ltd. Appareil pour détecter la fluorescence ultra-violet et méthode de détection correspondante

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014191084A1 (fr) * 2013-05-31 2014-12-04 Giesecke & Devrient Gmbh Substrat de sécurité
EP2818326A1 (fr) * 2013-06-26 2014-12-31 Giesecke & Devrient GmbH Substrat de sécurité

Also Published As

Publication number Publication date
EP2453418B1 (fr) 2017-12-20
DE102010051087A1 (de) 2012-05-16

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