EP1112555A1 - Procede et dispositif pour controler des papiers de valeur - Google Patents

Procede et dispositif pour controler des papiers de valeur

Info

Publication number
EP1112555A1
EP1112555A1 EP99944422A EP99944422A EP1112555A1 EP 1112555 A1 EP1112555 A1 EP 1112555A1 EP 99944422 A EP99944422 A EP 99944422A EP 99944422 A EP99944422 A EP 99944422A EP 1112555 A1 EP1112555 A1 EP 1112555A1
Authority
EP
European Patent Office
Prior art keywords
radiation
area
detector
security
radiation source
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
EP99944422A
Other languages
German (de)
English (en)
Other versions
EP1112555B1 (fr
Inventor
Heinz Hornung
Achim Philipp
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.)
Giesecke and Devrient GmbH
Original Assignee
Giesecke and 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 and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Publication of EP1112555A1 publication Critical patent/EP1112555A1/fr
Application granted granted Critical
Publication of EP1112555B1 publication Critical patent/EP1112555B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • G07D7/181—Testing mechanical properties or condition, e.g. wear or tear
    • G07D7/185—Detecting holes or pores
    • 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

Definitions

  • the invention relates to a method for checking securities, in particular bank notes, and a device for carrying out the method with a measuring plane, a device for translationally moving a security in the measuring plane, at least one radiation source for irradiating a first and a second region of the Measurement plane and a detector, which is arranged in the dark field with respect to a radiation source, for detecting the radiation diffusely transmitted by a security in the first irradiated area of the measurement plane.
  • the check can focus on the so-called authenticity features of the securities on the one hand and on the condition of the securities on the other.
  • the latter check in particular is used in connection with used banknotes, since these are subject to greater wear as a result of their continuous use.
  • the banknotes are drawn in and replaced by newly issued banknotes.
  • Features that are used to assess the condition of banknotes are e.g. Holes, tears, missing parts, dog's ears, dirt and stains on the banknotes.
  • the authenticity of the banknotes can e.g. for IR-transmitting or absorbing color prints, dimensions such as length and width, color fastness, printed image, opacity and the like are checked.
  • a device for checking banknotes is known, with which the authenticity of a banknote alone is assessed both on the basis of an optical test relating to color reflection and IR opacity and also on the basis of a length test.
  • the banknote is along a Measuring plane moved and scanned along three lines in order to determine the IR opacity and color reflection.
  • the opacity measurement is carried out by irradiating the bank note with light in the infrared wavelength range and detecting the IR radiation transmitted through the bank note by means of a detector arranged "in the bright field".
  • Bright field measurement means that the detector is reached directly by the radiation from the radiation source if no bank note is present, and in the event that a bank note lies in the measurement plane, it detects the radiation transmitted directly by the radiation source through the bank note (bright field Measurement).
  • radiation in the visible wavelength range is additionally directed onto the surface of the banknote, and the radiation reflected from the banknote surface is detected with a reflectance sensor.
  • the detected transmission and reflection radiation are compared with reference values in order to check the authenticity of the banknote.
  • the length of the banknote is also checked by means of the IR radiation source, by means of which the leading edge of the banknote is determined when the banknote is fed to the measuring station, while the end of the banknote is determined by a second sensor. However, the condition of the banknote is not checked.
  • DE-A-19604856 describes a device and a method for testing optical security features with metallic reflective layers, such as holograms and the like, for their exact positioning in the banknote, their edge design (fraying of the contour) and their completeness (holes, missing parts). known.
  • the condition check of these metallic security features is carried out in transmitted light, similar to the opacity check described above.
  • a bright field measurement as described above has proven to be unsuitable because an opposite one Arrangement of the radiation source and detector would result in an oversteering of the detector, which is disadvantageous in terms of measurement technology, due to direct radiation incidence in the spaces between the successive bank notes.
  • the detector is aligned with the radiation source in such a way that it receives no direct radiation from the radiation source if no banknote is present, but essentially only reaches the radiation from the radiation source if a banknote is present, the one transmitted through the banknote Radiation is detected. Accordingly, the detector is arranged with respect to the transport plane of the banknote so that the light passing through the banknote paper next to the metal layer or due to its damage (holes, abrasion in the area of folds) is only measured to the extent that it is scattered by the paper.
  • a device for checking notes of value is known, with which the authenticity of banknotes containing fluorescent fibers can be reliably checked.
  • the banknote is irradiated on one side with a radiation which excites the fluorescent substances, and the fluorescent radiation then emanating from the banknote is detected on both sides of the banknote.
  • the detectors for the fluorescent radiation are arranged in the dark field with respect to the excitation radiation source, so that a further detector can be arranged in the bright field on the side of the bank note opposite the excitation radiation source.
  • the detector which is arranged in the bright field, is intended for recognizing the state of the security, in that, based on the opacity of the paper, an insufficient paper density, glue spots, tears, inaccurate seams, faulty watermarks and missing security threads are recognized.
  • this detector arrangement allows the distinction between more transparent, e.g. thin or unprinted, paper and holes.
  • the aforementioned devices are either completely unsuitable for checking the condition of securities because they only relate to the authenticity check, or only suitable to a limited extent because holes, tears, missing parts, dog ears and the like cannot be reliably determined.
  • the dark field Measurement poses the problem that the detector does not determine a measured value either when a defect is detected or when a strongly opaque area is detected, so that it is not possible to distinguish between a hole and a strong opacity.
  • the detection of a hole leads to an overload of the detector or at least to a high measured value, which cannot be reliably distinguished from a likewise high measured value of a very weakly opaque area of the bank note.
  • a separate hole detector which is usually designed as an ultrasonic sensor, is usually used to determine defects in banknotes.
  • This additional hole detector is associated with additional costs, which are not always responsible.
  • a device for checking banknotes would often be sufficient, with which the state of the banknotes and possibly easily verifiable authenticity features can be determined.
  • the object of the present invention is therefore to propose a method and a device for checking securities with which a reliable detection of defects in banknotes is possible in an inexpensive manner.
  • the opacity of a banknote is measured both in the bright field and in the dark field, and the measured values determined are compared with one another. Since neither the bright field measurement nor the dark field measurement, taken on its own, a reliable statement about a flaw in the banknote, the solution according to the invention provides a comparison of the two measured values in order to recognize whether it is a flaw or a slightly opaque or strongly opaque area of the Banknote deals. If a slightly opaque area of the banknote is detected, then the bright field measurement does not give any meaningful value, but the dark field measurement is clear. If, on the other hand, a strongly opaque area of the banknote is detected, the dark field measurement does not give any meaningful value, but the bright field measurement is clear.
  • This principle represents a comparatively inexpensive solution in particular because the transmission measurement method (bright field or dark field) usually used to check the opacity of banknotes does not have to be equipped with an additional ultrasonic sensor as a hole detector, but instead a further transmission measurement (dark field or bright field) takes place , so that, for example, a special evaluation unit for the ultrasonic sensor can be saved. Due to the duplicity of several components, such a test device is much cheaper to manufacture than mass-produced items.
  • a radiation source and a detector can be used for both the bright field measurement and the dark field measurement.
  • a cost reduction can be achieved, however, if instead of a detector and a radiation source for the bright field measurement and for the dark field measurement, i.e. Instead of two detectors and two radiation sources, either only one common radiation source with two detectors or only one common detector with two radiation sources can be used.
  • a common radiation source with two detectors there are two options: either the radiation source irradiates two separate areas of the measurement plane, the first detector being arranged in the dark field of one irradiated area and the second detector in the bright field of the other irradiated area, or the radiation source being irradiated only one area of the measurement plane, the first detector being arranged in the dark field and the second detector in the bright field of this irradiated area.
  • the two radiation sources can either irradiate two different areas of the measuring plane or the same area of the measuring plane, in both cases the radiation sources being arranged so that the common one detector is in the dark field with respect to the first radiation source and in the bright field with respect to the second radiation source.
  • the separate control of the first and the second radiation source is the cheapest.
  • a special embodiment of the invention provides that at least one radiation source is designed as an IR radiation source. This enables the banknote to be checked for IR transmission at the same time, since many banknotes are printed with special colors which either absorb IR radiation or, which is more often the case, are IR radiation transparent.
  • the embodiment with two separate radiation sources also offers the possibility of an additional remission measurement in that the printed image of a banknote can be checked on the side of the radiation sources with a remission receiver using the light reflected from the banknote.
  • Figure 1 shows a preferred embodiment of a device according to the invention as a schematic diagram.
  • Figures 2a to 2e show five different embodiments of the invention as schematic diagrams.
  • Figure 3 shows a cross section of the device of Figure 1 along III-III.
  • FIG. 4 shows a timing diagram for detecting a banknote and evaluating the detected results.
  • FIG. 3 schematically illustrate a preferred embodiment of the present invention, FIG. 3 showing a cross section along the line III-III of the device shown in FIG. 1.
  • a bank note 1 is moved along a measuring plane 2 between an upper window 3 and a lower window 4.
  • two LED rows with LEDs 5 and 6 are arranged such that each LED irradiates the measurement plane in a defined area.
  • the radiation channels of LEDs 5 and 6 are indicated by dashed lines.
  • a row of detectors 7 is arranged above the window 3 in such a way that each detector 7 lies in the direct radiation range of the LEDs 5. The detectors 7 are thus in the bright field with respect to the LEDs 5.
  • the arrangement of the detectors 7 is selected such that the detectors are not irradiated directly by the LEDs 6.
  • the detectors 7 are thus in the dark field with respect to the LEDs 6.
  • the detectors 7 are oriented such that they each detect the defined areas on the bank note that are irradiated by the LEDs 5 and 6 lying opposite one another. That is to say, a detector 7 detects, on the one hand, the radiation of the directly opposite LEDs 5, which is emitted in the bright field by a bank note 1, and, on the other hand, the radiation of the diagonally opposite LEDs 6 which is emitted by the bank note in the dark field.
  • the transmitted radiation Before the transmitted radiation reaches the detector, it can be focused using a simple radiation collimator 10. A simple soap oc array can be sufficient.
  • the invention can also be carried out without any focusing of the transmitted radiation if the transmitted radiation of the area to be tested is directed onto the detector by channeling.
  • An evaluation unit 20 is connected to the detector 7 in order to evaluate the detected radiation values and to determine by comparison of the values from the bright field measurement with the values from the dark field measurement whether the detected area of the bank note is possibly a defect such as a hole, a Crack, etc.
  • the entire bank note can be checked for defects one after the other.
  • the comparison of light and dark field measurements allows the outer contours of a bank note to be recognized, so that the length and width of bank notes can be determined relatively precisely.
  • the resolution of course depends on the number of measurements across the width and length of the banknote. This is particularly clear in FIG. 3, in which the radiation paths of the LEDs 5 and the detection areas of the detectors 7 are shown with dashed lines.
  • the bank note 1 located in the measurement plane 2 only interrupts the light path of the third (from the left) to the penultimate LED 5.
  • the evaluation of the bright field and dark field measured values supplied by the first and second (from the left) and the last detector 7 is therefore about the the entire length of the checked banknote lead to the result "defect", from which it can be concluded that the outer edges of the banknote lie in the region of the third and penultimate detector.
  • FIG. 3 in which the radiation paths of the LEDs 5 and the detection areas of the detectors 7 are shown with dashed lines.
  • the bank note 1 located in the measurement plane 2 only interrupts the light path of the third (from the left) to the penultimate LED 5.
  • each detector is preferably arranged as a detector line across the width, wherein each detector can have two sensitive pixels.
  • the detector line can have gaps between the detectors and pixels, so that detectors can be saved as a result.
  • a resolution of 1 mm transversely to the direction of transport can, however, be sufficient for simple purposes.
  • the two outer ones of the 60 detectors can be arranged next to the actual measuring range for the banknote check. These can then e.g. to form a reference value for the brightness of the radiation emitted by the LEDs.
  • the LEDs preferably emit at least one LED line of IR light in order to be able to prove authenticity features, namely the presence of IR-emitting or IR-absorbing imprints. Since IR-absorbing inks are used less frequently than IR-transmitting inks, the LEDs 6, i.e. the radiation source for the dark field illumination, chosen as the IR radiation source. This reduces the likelihood that a highly IR-absorbing printed image will be rated as a defect.
  • the second LED row in this case the LEDs 5, advantageously emits light in the visible wavelength range.
  • the printed image and / or the image can additionally be obtained by means of a reflectance sensor 13 Denominations of the banknote can be recognized. Red light LEDs are preferably used for this purpose.
  • FIGS. 2a to 2e show basic embodiments of the invention described above in a particularly preferred embodiment.
  • Figure 2b shows the particularly preferred embodiment already described with reference to Figure 1, in which two light sources 5 and 6 illuminate a common, defined area of the measurement plane 2, to which a single detector 7 arranged on the opposite side of the measurement plane 2 is assigned, with which Both the radiation emitted by the red light radiation source 5 in the bright field and the infrared radiation emitted by the radiation source 6 in the dark field are detected.
  • FIG. 2a shows a structure similar to FIG. 2b with two radiation sources 5 and 6 and a common detector 7, however the radiation source 6 illuminates a first area of the measuring plane and the radiation source 5 illuminates a second area of the measuring plane 2 and the detector in the Bright field transmitted radiation of the radiation source 5 and the radiation transmitted in the dark field of the radiation source 6 are detected.
  • the first and the second irradiated area of the measuring plane can in principle also overlap.
  • the embodiments shown in FIGS. 2a and 2b assume that the detector 7 detects the radiation transmitted in the bright field and the radiation transmitted in the dark field independently of one another, ie with a time offset, so that on the basis of the separately detected bright field and dark field measured values, a comparison can be carried out in the evaluation unit 20 to determine defects in the bank notes.
  • the staggered detection will preferably achieved by irradiating the first and second regions at different times. In principle, however, it is also possible for the detector to be temporarily shielded from the first and temporarily from the second region. It is also conceivable that the detector is directed only at times to the first and at times only to the second area.
  • a particular advantage is the use of two different types of radiation, for example the radiation sources can differ in the color spectrum, e.g. Send out IR radiation and visible light.
  • FIGS. 2c and 2d show embodiments with an inversion of the principle described above. Instead of two radiation sources and a common detector, these embodiments provide a common radiation source and two detectors.
  • the radiation source 6 illuminates a defined area of the measurement plane 2, to which both a detector 7 arranged in the dark field and a detector 8 arranged in the bright field are directed.
  • two different areas of the measurement plane 2 are illuminated by the radiation source 6, e.g. the remaining radiation from the radiation source 6 is shielded by an aperture 9.
  • the detector 7 is arranged in the dark field with respect to the first irradiated area, while the detector 8 is arranged in the bright field with respect to the second irradiated area.
  • FIG. 2e shows a further but more complex and therefore less interesting embodiment of the present invention, in which a first detector 7 is arranged in the dark field of a first radiation source 6 and a second detector 8 in the bright field of a second radiation source 5.
  • this embodiment is more complex than the one described above, it offers the advantages that the use of two radiation sources and two detectors has, namely simultaneous measurement in light and dark fields and the use of different wavelengths.
  • a bank note 1 is fed along the measuring plane 2 between the two windows 3 and 4 to a measuring area, that is the area which is detected by the detectors 7.
  • Each detector 7 defines its own measuring range.
  • the leading edge of a banknote is then determined using one of the two radiation sources, preferably by dark field measurement using the radiation source 6, since the edge region of banknotes is usually not completely opaque, so that the leading edge of the banknote can be reliably determined using the dark field measurement is.
  • the radiation source 5 is meanwhile switched off or shielded in order not to influence the measurement result of the dark field measurement.
  • the radiation from the dark-field radiation source 6 transmitted in a first area by the bank note 1 is detected by the detector 7. After a predetermined detection time has elapsed, the detected radiation is read out by an evaluation unit. During the reading, the detector 7 is inaccessible for the reception of further radiation, for example by switching off or shielding the radiation source 6.
  • the bank note After reading out the radiation transmitted by the radiation source 6 through the bank note 1 in the first area, the bank note is illuminated in a second area by means of the radiation source 5, while the radiation source 6 is shielded or preferably switched off.
  • the first and second areas of the banknote can be identical, but can also overlap - e.g. 50% each - or lie completely next to each other.
  • the radiation transmitted through the bank note in the second area is detected by the detector 7.
  • the transmitted radiation detected by the detector 7 in the second area is read out. This process is repeated until the entire banknote has been detected area by area.
  • the second area of the bank note irradiated by the radiation source 5 lies in the same area of the measurement plane 2 that was also illuminated by the radiation source 6.
  • this does not mean that the irradiated areas of the banknote are identical. Only in the case of a correspondingly clocked feed movement of the banknote 1 within the measuring plane 2 do the banknote areas irradiated by the radiation source 5 coincide identically with the banknote areas previously irradiated by the radiation source 6.
  • the movement of the banknote can take place in two stages, the banknote only being moved between the brightfield and darkfield measurements and the Measured steel is read out during the banknote advance.
  • the second area of the bank note 1 irradiated by the radiation source 5 is slightly offset from the first bank note area illuminated by the radiation source 6. This is related to the time sequence of the irradiation and the movement of the banknote.
  • the first areas illuminated by radiation source 6 and the second areas of banknote 1 illuminated by radiation source 5 can thus overlap more or less or even lie side by side. The further apart the first and second irradiated banknote areas, the lower the resolution of the test device and the greater the defects in the banknote that are just barely recognizable with the test device.
  • FIG. 4 shows, for example, a time sequence of the irradiation of the bank note 1 with the radiation sources 5 and 6 and the time in between for reading out the detected radiation over a time axis.
  • the bank note is first irradiated with the dark field light source 6 for 170 ⁇ s.
  • the tian-emitted radiation detected by the detector 7 in the first area is read out for a period of likewise 170 ⁇ s, as shown in graph b.
  • a time gap of approximately 30 ⁇ s is provided before the irradiation of a second area of the bank note 1 in order to ensure that the reading of the detector is completed before the renewed irradiation.
  • the irradiation of the second area of the bank note 1 by means of the radiation source 5 also takes place for a period of 170 ⁇ s as shown in graph c. This is followed by reading out the tian-emitted radiation detected by the detector 7 in the bright field for a further 170 ⁇ s, followed by a further security window of 30 ⁇ s. Then a next first area of the banknote is measured again in the dark field, as indicated in curve a. A complete measuring cycle thus takes, for example, 740 ⁇ s.
  • the above-described time sequence is particularly advantageous because it enables the use of inexpensive detectors 7 which have sufficient time during the reading time to discharge so that they are available again for the detection of the transmitted radiation of the next bank note area. With more complex systems it would of course be possible to simultaneously detect, read out and sum up the detected emitted radiation, so that the time required for evaluating the detected radiation would be saved. The test time can be reduced in this way, but the expenditure on equipment is considerably higher.
  • holes, tears, missing parts, dog ears and the like which lie in the resolution area of the device can be reliably recognized by comparing the transmission radiation values measured in the dark field of the first banknote area and in the bright field of the second banknote area. If the value measured in the bright field is above a predetermined limit value, which indicates either thin unprinted paper or a defect in the paper, then a comparison with the value of the second area measured in the dark field determines that it is actually a defect if the dark field measurement has resulted in a measurement value close to zero. If, on the other hand, the dark field measurement has given a value which is relatively high, then this is a sign that thin, unprinted paper was actually present in the measurement plane.
  • the evaluation of the values measured in the bright field and dark field can take place immediately after the readout of the measured values, so that a comparison of these values enables a statement about defects to be made immediately.
  • the read values can also be temporarily stored and evaluated after the bank note has been checked. In addition to the detection of defects, an authenticity comparison can then take place simultaneously with reference data of standard banknotes stored in an EEPROM.
  • the method according to the invention provides as a further embodiment that one of the light sources, preferably the light source of the dark field measurement, emits radiation in the IR wavelength range.
  • one of the light sources preferably the light source of the dark field measurement
  • emits radiation in the IR wavelength range This makes it possible to recognize printed images that are printed with IR printing ink.
  • Such colors can be both translucent and opaque when illuminated with red light be absorbent for IR light, so that the evaluation of the detected emitted IR radiation allows conclusions to be drawn as to the authenticity of the banknote.
  • the other of the two radiation sources can emit radiation in the visible wavelength range, for example pure red light, instead of IR radiation. An evaluation of the printed image and the denomination is possible by evaluating the detected red light emitted.
  • the denomination can in turn be used to draw conclusions about the length and width dimensions of the banknote, so that in addition to the IR print image check, a further authenticity test can be carried out via the dimensions of the banknote determined using the method according to the invention, namely the check whether the dimensions of the checked ones The banknote matches the denomination detected.
  • the color fastness, the printed image and the IR reflection properties of the banknote 1 can be checked by means of an additionally provided reflectance sensor 13 on the basis of the light 12 reflected by the irradiated banknote area.
  • the measured reflection values are compared with reference values of standard banknotes in an evaluation unit.
  • the procedure described above can be carried out both in the basic configuration according to FIG. 1 or 2b and also according to the configuration according to FIG. 2a.
  • the above-described method can also be carried out in a corresponding manner with the embodiments of the device according to the invention shown in FIGS. 2c and 2d, which offer the advantage that, due to the use of two detectors 7 and 8, a simultaneous evaluation of the dark field measurement and the bright field measurement is possible.
  • the test speed can thus be doubled since only one is used to detect the radiation emitted in the light and dark field and to read out the detected radiation emitted Time period is required so that the total cycle is 370 ⁇ s, including a safety window of 30 ⁇ s.
  • this embodiment has the disadvantage that only one radiation can be used.
  • FIG. 2e offers the advantages of the basic embodiments shown in FIGS. 2c and 2d and also allows one of the two radiation sources to be designed as a radiation source that emits visible light.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour contrôler des papiers de valeur, notamment pour contrôler l'état d'un billet de banque. Selon l'invention, les billets de banque sont soumis à une mesure sur fond noir et à une mesure sur fond clair. La comparaison des résultats de mesure sur fond noir et sur fond clair permet de déterminer clairement la présence ou non d'un défaut dans la zone contrôlée, par exemple la présence d'un trou, d'une fissure, etc., dans le billet de banque. Les dispositifs de mesure sur fond noir et sur fond clair peuvent se présenter sous la forme de dispositifs séparés présentant respectivement un groupe de diodes électroluminescentes (DEL) et un groupe de détecteurs. Cependant, dans des modes de réalisation préférée de l'invention, les dispositifs de mesure sont constitués soit par un groupement commun de DEL comportant deux détecteurs, soit par deux groupes de DEL présentant un détecteur commun. Dans ce dernier cas, la source de rayonnement pour la mesure sur fond noir est de préférence une source de rayonnement infrarouge et la source de rayonnement pour la mesure sur fond clair est une source de lumière rouge, afin de permettre, outre une vérification de l'état du papier de valeur, un contrôle d'authenticité.
EP99944422A 1998-09-04 1999-08-17 Procédé et dispositif pour contrôler l'état des papiers de valeur utilisant de mesure fond noir et fond clair. Expired - Lifetime EP1112555B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19840482A DE19840482A1 (de) 1998-09-04 1998-09-04 Verfahren und Vorrichtung zum Prüfen von Wertpapieren
DE19840482 1998-09-04
PCT/EP1999/006027 WO2000014689A1 (fr) 1998-09-04 1999-08-17 Procede et dispositif pour controler des papiers de valeur

Publications (2)

Publication Number Publication Date
EP1112555A1 true EP1112555A1 (fr) 2001-07-04
EP1112555B1 EP1112555B1 (fr) 2005-06-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99944422A Expired - Lifetime EP1112555B1 (fr) 1998-09-04 1999-08-17 Procédé et dispositif pour contrôler l'état des papiers de valeur utilisant de mesure fond noir et fond clair.

Country Status (6)

Country Link
US (1) US6744050B1 (fr)
EP (1) EP1112555B1 (fr)
AT (1) ATE297576T1 (fr)
AU (1) AU5736399A (fr)
DE (2) DE19840482A1 (fr)
WO (1) WO2000014689A1 (fr)

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US6744050B1 (en) 2004-06-01
AU5736399A (en) 2000-03-27
ATE297576T1 (de) 2005-06-15
DE59912160D1 (de) 2005-07-14
WO2000014689A1 (fr) 2000-03-16
DE19840482A1 (de) 2000-03-09
EP1112555B1 (fr) 2005-06-08

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