DE102009032227A1 - Procedure for the examination of value documents - Google Patents

Procedure for the examination of value documents

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Publication number
DE102009032227A1
DE102009032227A1 DE102009032227A DE102009032227A DE102009032227A1 DE 102009032227 A1 DE102009032227 A1 DE 102009032227A1 DE 102009032227 A DE102009032227 A DE 102009032227A DE 102009032227 A DE102009032227 A DE 102009032227A DE 102009032227 A1 DE102009032227 A1 DE 102009032227A1
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DE
Germany
Prior art keywords
value
value document
area
properties
document
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE102009032227A
Other languages
German (de)
Inventor
Manfred Dr. Heim
Jürgen Dr. Schützmann
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
Priority to DE102009032227A priority Critical patent/DE102009032227A1/en
Publication of DE102009032227A1 publication Critical patent/DE102009032227A1/en
Application status is Ceased legal-status Critical

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Classifications

    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00Testing 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
    • G07D7/06Testing 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
    • G07D7/12Visible light, infra-red or ultraviolet radiation
    • G07D7/121Apparatus characterised by sensor details

Abstract

The present invention relates to a method for the examination of value documents having at least one transparent area with characteristic irregularities.
What is described is a method for the examination of documents of value consisting of a paper substrate which has at least one transparent region with characteristic irregularities, in particular a deckle edge, located at one edge or within the substrate, for the presence of the characteristic irregularities. The detection of the presence of the characteristic irregularities is provided by means of a check of scattering properties and transmission properties or, optionally, remission properties of the value document.

Description

  • The The present invention relates to a method for testing of value documents containing at least one transparent area have characteristic irregularities.
  • Under Value documents are to be used in particular banknotes, checks, Vouchers, coupons, tickets, vouchers, passes, etc. understood become.
  • From the DE 10 2005 032 815 A1 or the WO 03/054297 A2 Value documents are known which have at least one through opening with characteristic irregularities. The through openings are produced in these value documents during the production of the substrate of the value documents. The through-holes are generated particularly during the wet phase in papermaking, resulting in the characteristic irregularities within the opening, at the boundary to the substrate out. The characteristic irregularities are manifested by the lack of a sharp cutting edge or by irregular attachment of fibers in the edge region of the opening to the substrate and by projecting into the opening of individual fibers.
  • As well it is known from the cited prior art documents, that for verification, for example, the authenticity a value document having such an opening, the characteristic irregularities of the Edge area of the opening with the naked eye or can be checked by a magnifying glass.
  • task The present invention is a method for the Examination of value documents covering at least one area have characteristic irregularities, specify which automatic verification allow such value documents.
  • These The object is achieved by the features of the independent claim.
  • The The invention is based on a method for testing value documents consisting of a paper substrate, which at least one located at one edge or within the substrate transparent area with characteristic irregularities, especially a deckle edge, has, on the presence the characteristic irregularities, from. With the steps, Illuminate a value document with light, Capture of light, which comes from the document of value and a reaction represents the lighting, detecting scattering characteristics and transmission properties for the document of value of detected light, area by area determination of values for Scattering properties and transmission properties of the value document, an area of the value document being a characteristic one for the case Irregularity is detected that this area is bounded by an area on one of its two sides, with a value for the scattering properties of the order of magnitude or greater than the value of the scattering properties this range, as well as a value for the transmission properties, less than the value of the transmission characteristics of this range is, and that this area on its other side of a Range is limited, with a value for the scattering properties, less than the value of the scattering properties of this area and a value for the transmission properties in the order of magnitude or larger as the value of the transmission properties of this range.
  • Of the Advantage of the invention is to be seen in particular that value documents with at least one characteristic irregularity can be detected automatically and safely can be distinguished from value documents, although also have at least one transparent area, however not the characteristic irregularities. In contrast to the value documents with at least one transparent one Area with characteristic irregularities, which arise during production in the wet phase, For example, such value documents can be adjusted be that, after the completion of the production of the security, in particular after completion of the wet phase, such transparent areas Punching or cutting edge are generated. In this case, however, are missing the characteristic irregularities. The proposed method is therefore particularly suitable for verification the authenticity of value documents with characteristic irregularities.
  • Further Advantages of the present invention will become apparent from the dependent Claims and the following description of an embodiment based on figures.
  • It shows
  • 1 a document of value with areas of characteristic irregularities,
  • 2 a cut through the in 1 illustrated value document,
  • 3 a first embodiment of a device for the examination of documents of value with at least one area with characteristic irregularities, and
  • 4 a second embodiment of a device for the examination of documents of value with at least one area with characteristic irregularities
  • In 1 is an example of value document with a through opening 2 with characteristic irregularities 3 in the edge area of the opening 2 to the substrate 1 of the security.
  • The value document consists of a substrate 1 , in particular of paper, which is formed by a fiber composite. Usually, cellulose or cotton fibers are used for the substrate of value documents in particular. The continuous opening 2 is produced especially during the wet phase in papermaking, resulting in the characteristic irregularities 3 in the edge area of the opening 2 result. The characteristic irregularities are expressed by the lack of a sharp cutting edge or by irregular attachment of the fibers in the edge region of the opening 2 to the substrate 1 back and forth in the opening 2 protruding single fibers.
  • To stabilize the characteristic irregularities 3 in the edge area of the opening 2 It may be provided that a film 4 , which may in particular consist of a plastic material, on at least one surface of the substrate 1 in the area of the opening 2 is attached. The foil 4 is for example by means of a hot melt adhesive to the substrate 1 connected. The characteristic irregularities 3 in the edge area of the opening 2 be through the foil 4 or the film 4 stabilizing adhesive stabilized. This leaves the characteristic irregularities 3 in the edge area of the opening 2 even if the document of value, e.g. B. in the form of banknotes, rotates and thus mechanically stressed. In addition, on the second surface of the substrate 1 of the value document a foil is applied, the protection of the characteristic irregularities 3 in the edge area of the opening 2 even better.
  • The value document can contain further areas with characteristic irregularities 3 exhibit. Illustrated by way of example is an area extending along the left edge of the security with a characteristic irregularity 3 also from slides 4 is concealed, with the slides a transparent area 2 form along the left edge. A third and fourth area with characteristic irregularities 3 is located between the left edge and the opening 2 , Also the third and fourth area with characteristic irregularities 3 be from two slides 4 covered a transparent area 2 form across the value document.
  • In 2 is a cut through the in 1 represented value document shown along a line AA. The opening 2 , the transparent areas 2 and the areas with characteristic irregularities 3 of the substrate 1 are through the slides 4 covered on one or both sides.
  • According to the in the 1 and 2 illustrated transparent areas 2 with associated areas with characteristic irregularities 3 where one of the two sides of a characteristic irregularity has a transparent area 2 and on the other side of the characteristic irregularity the substrate 1 of the value document can contain any number of arbitrarily designed transparent areas 2 with associated areas with characteristic irregularities 3 in the substrate 1 be arranged the value document.
  • In the examination of such value documents, consisting of a paper substrate 1 , with at least one or more transparent areas 2 and characteristic irregularities 3 , which are formed in particular by a so-called deckle edge, on the presence of the characteristic irregularities 3 , the value document to be examined is illuminated with light. The light originating from the document of value which arises in response to the illumination is detected. For example, the intensity of the light, ie its brightness, is determined. On the basis of the detected light originating from the value document, scattering properties and transmission properties are determined for the value document. For this purpose, values for the scattering properties and transmission properties of the value document are determined in some areas. This can be done, for example, by dividing the entire value document into a plurality of subareas, wherein the values for the scattering properties and transmission properties for each of the subareas are determined.
  • The Value document has areas whose scattering properties and Transmission properties essentially divided into three categories which are characteristic for the respective one Area are.
  • The first category forms the substrate 1 of the value document. The substrate 1 is formed by fibers and is inhomogeneous, which is why light is in the region of the substrate 1 of the value document. In addition, the substrate has 1 a certain thickness. The values for the scattering properties and transmission properties therefore depend on the thickness and the material composition of the substrate 1 as well as possible printing etc. For the substrate 1 self surrendered typically have large values of scattering characteristics since the light from the illumination is strongly scattered by the fibers. For the transmission properties, small values result because of the scattering and the thickness of the substrate 1 only relatively little light is transmitted through the substrate.
  • The second category is the characteristic irregularity 3 of the value document. Like the substrate 1 , also show the characteristic irregularities 3 Fibers are on and inhomogeneous, which is why light is in the range of characteristic irregularities 3 is scattered. The characteristic irregularities 3 Therefore, they show large values for the scattering properties, which are on the order of the values for the substrate 1 lie, or are slightly smaller, because in the range of characteristic irregularities 3 less fiber material is present than in the region of the substrate 1 , Because of this, more light can pass through the area of characteristic irregularities 3 transmit than through the substrate 1 , which is why the values of the transmission properties for the characteristic irregularities 3 are large, in particular larger than for the substrate 1 , These values for the scattering properties and transmission properties of the characteristic irregularities 3 also arise in the event that, as in the 1 and 2 represented, the characteristic irregularities 3 whole, partial, from one or both sides with a foil 4 are covered.
  • The third category is the transparent areas 2 of the value document. In the simplest case, the transparent area of an opening 2 in the substrate 1 be formed. The transparent area 2 but can also be formed of transparent material, for example one or more plastic films. The transparent area 2 has little or no scatter (for example, if the film is printed), which is why the value of the scattering properties is small, at least smaller than the values of the scattering properties of substrate 1 and characteristic irregularities 3 , Because the transparent area 3 translucent, it has a value for the transmission properties greater than the value for the substrate 1 and in the order of magnitude or greater than the value for the characteristic irregularities 3 is.
  • An area of the value document can then be considered a characteristic irregularity 3 be recognized, if this area 3 on one of its two sides from the substrate 1 is limited, so if the first delimiting area 1 a value for the scattering properties of the order of magnitude or greater than the value of the scattering properties of this range 3 , and a value for the transmission properties, which is smaller than the value of the transmission properties of this range 3 is. In addition, this area needs 3 on the other side of a transparent area 2 so if the second bounding area 2 a value for the scattering properties less than the value of the scattering properties of that range 3 and a value for the transmission characteristics of the order of magnitude or greater than the value of the transmission properties of this range 3 ,
  • The proposed method can be improved if the value document to be examined is illuminated with polarized light and the light originating from the value document is detected using a polarizer. The polarizer must have an orientation that is crossed to the polarization direction of the polarized light. In this case, light originating directly from the light source used for the lighting, or from the transparent area 2 originating light, suppressed and only by scattering on the substrate 1 or at the characteristic irregularity (s) 3 caused light detected. In this case, the above-explained detection of the characteristic irregularities remains 3 using the values for scattering properties and transmission properties for the substrate 1 and the characteristic irregularities 3 unchanged.
  • Instead of the transmission properties described above, remission properties of the value document can also be determined and for checking the presence of characteristic irregularities 3 be used. In this case, it should be noted that the values for the remission properties are inversely proportional to the values for the transmission properties. The substrate 1 thus has a large value for the remission properties. The value of the remission properties of characteristic irregularities 3 is therefore smaller than the value of the reflectance properties of the substrate 1 , The value of the reflectance properties for transparent areas 2 is small, especially smaller than the value of the reflectance characteristics of the characteristic irregularities 3 , If a reflection of the light of the illumination occurs at the transparent area, the value of the reflectance properties is for the transparent areas 2 greater than the values of the reflectance properties for the substrate 1 and the characteristic irregularities 3 ,
  • A further improvement of the method is possible by the use of a two-stage process. In this case, the type of the value document to be checked is determined in a first stage. If the document of value is a banknote, this can be, for example, the determination of the currency and denomination of the banknote. This can z. The size, the color, etc. of the value documents are determined in order to derive the currency and denomination. Alternatively or additionally, corresponding information from an operator, for. Example, by means of input device, are entered to select the type of value documents to be processed in each case.
  • If the type of value document is known, stored information about the number, size and placement of the characteristic irregularities can be stored 3 in the value document are used to examine the corresponding points of the value document in a second step with the method described above for the presence of the expected characteristic irregularities.
  • In 3 is a device 10 for the examination of value documents containing at least one transparent area 2 and characteristic irregularities 3 have shown.
  • The device 10 has a lighting 11 on, which can be formed in particular by one or more light-emitting diodes. In addition, lenses or optical fibers may be provided to illuminate the light of the illumination in a particular plane, e.g. B. linear focus. Value documents to be checked can be conveyed by a transport device (not shown) in a transport direction T through the device 10 be transported. The value documents are preferably located in a plane in which the light of the illumination 11 is focused. Preferably, the line-shaped illumination has a width which covers the entire width of the transport device, so that one at the lighting 11 transported by value document can be fully illuminated. The transport device can transport the value documents parallel to their long or short edges. Accordingly, the width of the transport device and thus the width of the linear illumination must correspond at least to the width or length of the largest document of value to be checked.
  • The lighting 11 opposite is a sensor 13 arranged, that of the lighting 11 originating and transmitted through the value document light detected. Another sensor 12 so can from the first sensor 13 be arranged offset that the light of the illumination 11 not directly to the other sensor 12 can get. Is the lighting 11 switched on and there is no document of value in the area of the device 10 , provides the additional sensor 12 no output signal. Is there a value document? 1 in the field of the device 10 , the light becomes the lighting 11 from the value document 1 scattered and the other sensor 12 provides an output signal. The sensors 12 . 13 can of z. B. of photodiodes, CCD elements or other photosensitive components are formed. The sensors preferably have 12 . 13 a line-shaped structure covering the entire width of the transport device and on the lighting 11 aligned line-shaped area, z. B. by means of lenses. The sensors 12 . 13 Thus, a value document transported before can be completely recorded line by line.
  • If a value document along the transport direction T between lighting 11 and sensor 13 transported through, the sensor provides 13 in the presence of the substrate 1 of the value document, a signal value that by the substrate 1 Transmitted light corresponds to parts of the light from the substrate 1 be scattered. In the area of the opening 2 which by the for the light of the lighting 11 transparent film 4 is covered, the sensor provides 13 a greater signal value, since the film 4 is transparent to the light and there is also little light from the foil 4 is scattered. In the area of the deckle edge 3 occurs a scattering by the existing there fiber material. This scattering is less than the scattering by the substrate 1 , but larger than the scattering by the film 4 , Because the light of the lighting 11 but with almost no loss through the opening 2 it can occur in the area of the opening 2 very bright, which is why a detection of deckle edge 3 that is brighter than the area of the substrate 1 is, by means of the sensor 13 is problematic. The brighter appearance of the deckle edge 3 arises because in the deckle edge 3 compared to the substrate 1 less fiber material is arranged, which is why the deckle edge 3 has a higher transmissivity.
  • At the same time arise at the other sensor 12 that is not in the beam path of lighting 11 is (dark field transmission measurement), other signal values for the document of value, as the lighting 11 not directly opposite the other sensor 12 is arranged.
  • In the area of the substrate 1 of the value document, the light is scattered. The further sensor 12 therefore generates in the area of the substrate 1 one for the substrate 1 typical signal value. The signal value depends on the thickness and the composition of the material of the substrate 1 as well as possible printing etc. These give the substrate characteristic scattering and transmission properties.
  • In the area of the opening 2 becomes the light from a film present there 4 hardly affected, ie there is no or hardly any scattering of the light of illumination 11 on. Will not be a slide 4 also used, no scattering occurs. From the perspective of the other sensor 12 the transparent area appears 2 therefore dark, which is why the other sensor 12 just provides a very small signal value. The same applies if no document of value in the area of the device 10 is available. In the edge area of the transparent area 2 lies the irregular fiber material of the deckle edge 3 before, why in the area of the characteristic irregularities of the value document a scattering of the light of the illumination 11 he follows. As the material thickness of the deckle edge 3 is less than in the remaining area of the substrate 1 of the value document, can through the deckle edge 3 a greater amount of the light of the lighting 11 transmit. The deckle edge 3 thus appears from the perspective of the other sensor 12 brighter than the substrate 1 and the opening 2 , When examining the value document thus results for the area of the opening 2 the lowest signal value of the other sensor 12 whereas for the deckle edge 3 the largest signal value results. For the area of the substrate 1 on the other hand, this results for the substrate 1 typical signal value between the signal values for the opening 2 and the deckle edge 3 lies.
  • Be the signals of the other sensor 12 from an evaluation device 15 , z. As a microprocessor, evaluated, the deckle edge 3 be particularly well recognized with the characteristic irregularities, as this view from another sensor 12 especially bright. In addition, it is particularly typical that the bright area (characteristic irregularities 3 ) a dark area (opening 2 ). This allows value documents that have a continuous opening 2 with a deckle edge 3 have to be distinguished reliably from documents of value, which have a continuous opening with a smooth or sharp-edged edge region, can be distinguished. In the case of the last-mentioned value documents, the above for the irregularly limited deckle edge occurs 3 does not disclose scattering effect, which is why in the transition region from opening to substrate of such value documents no bright area by means of the further sensor 12 is detected.
  • Will be a polarizer 40 for the lighting 11 and a crossed polarizer 41 for the sensors 12 . 13 used, capture the sensors 12 . 13 as described above, only on the substrate 1 or the characteristic irregularities 3 scattered light.
  • From the determined brightness values of one or both sensors 12 . 13 can by means of the evaluation device 15 the values for scattering properties and transmission properties can be determined in the manner described above to detect the presence of characteristic irregularities 3 to check.
  • So far, the recognition of value documents with characteristic irregularities by means of lighting 11 opposite sensors 12 described. However, it is obvious that even sensors 22 . 23 Can be used on a page with a lighting 21 lie like this in 4 is shown. Also in remission measuring sensors 22 . 23 In particular, the different brightnesses of the value document can be recorded. As already explained above, the remission properties of substrate 1 , transparent area 2 and characteristic irregularities 3 inversely proportional to the respective transmission properties of substrate 1 , transparent area 2 and characteristic irregularities 3 ,
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
  • Cited patent literature
    • DE 102005032815 A1 [0003]
    • WO 03/054297 A2 [0003]

Claims (6)

  1. Method for checking documents of value consisting of a paper substrate ( 1 ), which at least one at one edge or within the substrate ( 1 ) transparent area ( 2 ) with characteristic irregularities ( 3 ), in particular a deckle edge, for the presence of characteristic irregularities ( 3 ), characterized by illuminating a value document with light, detecting light which originates from the value document and represents a response to the illumination, determining scattering properties and transmission properties for the value document from the detected light, determining area values for scattering properties and transmission properties of the value document where one area ( 3 ) of the value document in the event of a characteristic irregularity, that 3 ) on one of its two sides of an area ( 1 ) with a value for the scattering properties of the order of magnitude or greater than the value of the scattering properties of this range ( 3 ), and a value for the transmission properties which is smaller than the value of the transmission properties of this range ( 3 ), and that this area ( 3 ) on its other side of an area ( 2 ), with a value for the scattering properties which is smaller than the value of the scattering properties of this range ( 3 ), and a value for the transmission properties of the order of magnitude or greater than the value of the transmission properties of this range ( 3 ).
  2. Method according to claim 1, characterized in that the illumination ( 11 ) of the value document from one of the surfaces of the value document, whereas the acquisition ( 12 . 13 ) of the light originating from the value document takes place from the other surface of the value document.
  3. Method according to claim 1, characterized in that the illumination ( 21 ) of the value document and the entry ( 22 . 23 ) of the light originating from the value document from one of the surface of the value document, whereby remission properties of the value document are determined, and that for the recognition of the characteristic irregularities ( 3 ) Values of the remission properties which are inversely proportional to the values of the transmission properties can be used.
  4. Method according to one of claims 1 to 3, characterized in that the illumination ( 11 ; 21 ) with polarized light, and that for the detection ( 12 . 13 ; 22 . 23 ) of the light derived from the document of value a polarizer is used, which is crossed to the polarized light of the illumination.
  5. Method according to one of claims 1 to 4, characterized in that in a first stage, the type of value document is detected or specified that is derived in a second stage of the known type of the value document, if and how many characteristic irregularities ( 3 ) the value document has, at which position of the known value document a characteristic irregularity ( 3 ) and its size, and that in a third step it is checked whether the characteristic irregularities ( 3 ) available.
  6. Method according to one of claims 1 to 5, characterized by the use of the method for testing the authenticity of the value document.
DE102009032227A 2009-07-08 2009-07-08 Procedure for the examination of value documents Ceased DE102009032227A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102009032227A DE102009032227A1 (en) 2009-07-08 2009-07-08 Procedure for the examination of value documents

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009032227A DE102009032227A1 (en) 2009-07-08 2009-07-08 Procedure for the examination of value documents
PCT/EP2010/059757 WO2011003954A1 (en) 2009-07-08 2010-07-07 Method for checking value documents

Publications (1)

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DE102009032227A1 true DE102009032227A1 (en) 2011-01-13

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013006925A1 (en) * 2013-04-22 2014-10-23 Giesecke & Devrient Gmbh Device and method for checking value documents, in particular banknotes, as well as value document processing system
DE102013016120A1 (en) * 2013-09-27 2015-04-02 Giesecke & Devrient Gmbh A method of inspecting a document of value having a polymeric substrate and a see-through window and means for performing the method
US10347069B2 (en) 2013-04-22 2019-07-09 Giesecke+Devrient Currency Technology Gmbh Apparatus, method and assembly for checking value documents, in particular bank notes, and value-document processing system

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DE102005032815A1 (en) 2005-07-12 2007-01-18 Giesecke & Devrient Gmbh Method for producing a security paper, paper screen and forming element for paper screen

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DE2805967A1 (en) * 1978-02-13 1979-08-16 Aral Austria Ges Mbh Optical checking system for documents - uses transmitted and reflected light components for comparison with reference valves
US5139339A (en) * 1989-12-26 1992-08-18 Xerox Corporation Media discriminating and media presence sensor
US20040051862A1 (en) * 2000-10-13 2004-03-18 Alcock Robin Daniel Detection of printing and coating media
WO2003054297A2 (en) 2001-12-21 2003-07-03 Giesecke & Devrient Gmbh Security paper and method and device for producing the same
DE102005032815A1 (en) 2005-07-12 2007-01-18 Giesecke & Devrient Gmbh Method for producing a security paper, paper screen and forming element for paper screen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013006925A1 (en) * 2013-04-22 2014-10-23 Giesecke & Devrient Gmbh Device and method for checking value documents, in particular banknotes, as well as value document processing system
US9852568B2 (en) 2013-04-22 2017-12-26 Giesecke+Devrient Currency Technology Gmbh Apparatus and method for checking value documents, in particular bank notes, and value-document processing system
US10347069B2 (en) 2013-04-22 2019-07-09 Giesecke+Devrient Currency Technology Gmbh Apparatus, method and assembly for checking value documents, in particular bank notes, and value-document processing system
DE102013016120A1 (en) * 2013-09-27 2015-04-02 Giesecke & Devrient Gmbh A method of inspecting a document of value having a polymeric substrate and a see-through window and means for performing the method
US9865116B2 (en) 2013-09-27 2018-01-09 Giesecke+Devrient Currency Technology Gmbh Method for verifying a valuable document having a polymer substrate and a transparent window and means for carrying out said method

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