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EP0024053B1 - Procédé pour l'examen du degré d'encrassement de supports d'enregistrement - Google Patents

Procédé pour l'examen du degré d'encrassement de supports d'enregistrement Download PDF

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Publication number
EP0024053B1
EP0024053B1 EP80104790A EP80104790A EP0024053B1 EP 0024053 B1 EP0024053 B1 EP 0024053B1 EP 80104790 A EP80104790 A EP 80104790A EP 80104790 A EP80104790 A EP 80104790A EP 0024053 B1 EP0024053 B1 EP 0024053B1
Authority
EP
European Patent Office
Prior art keywords
light
contamination
measuring
degree
banknote
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.)
Expired
Application number
EP80104790A
Other languages
German (de)
English (en)
Other versions
EP0024053A1 (fr
Inventor
Gerhard Dr. Stenzel
Wittich Dr. Kaule
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.)
GAO Gesellschaft fuer Automation und Organisation mbH
Original Assignee
GAO Gesellschaft fuer Automation und Organisation mbH
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 GAO Gesellschaft fuer Automation und Organisation mbH filed Critical GAO Gesellschaft fuer Automation und Organisation mbH
Priority to AT80104790T priority Critical patent/ATE5552T1/de
Publication of EP0024053A1 publication Critical patent/EP0024053A1/fr
Application granted granted Critical
Publication of EP0024053B1 publication Critical patent/EP0024053B1/fr
Expired 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
    • 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
    • G07D7/121—Apparatus characterised by sensor details
    • 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

Definitions

  • the invention relates to a method for checking the degree of soiling of recording media, in particular banknotes, with the aid of a transceiver arrangement and evaluating the received measurement signals as a measure of the degree of soiling, the recording media being at least partially printed with colors that are invisible to light Spectral range are permeable.
  • the determination of the degree of wear of banknotes is known from a large number of documents.
  • unprinted areas of the banknote surface such as the edge (DE-A-23 10 882) or also unprinted areas within the banknote area (US-A-2, 950, 799) are used for testing. If unprinted areas on the banknote are not available or only to a sufficient extent, the check must be carried out within the printed image of the banknote. In contrast to the examination of unprinted areas, it must be taken into account that the light reaching the photodiodes is modulated by the print pattern present along the scanning track. In this connection, a test method is mentioned in DE-A-27 52 412, which u. a.
  • the method delivers good results as long as the track used to form the standard signal is exactly adhered to in subsequent tests.
  • the photodiode scans a more or less strongly changed print pattern in the vicinity of the original track, which inevitably leads to changes in the test level regardless of the contamination.
  • the test level is therefore within a driving range when scanning several banknotes with the same contamination or with multiple scans of the same banknote or with multiple scans of the same banknote, so that a tightly tolerated assessment of the degree of soiling, which is divided into several stages, is excluded.
  • the object of the invention is therefore to propose a method and a device for checking the degree of wear of banknotes, in which, even when checking in printed areas of the note, the test results of notes with the same contamination lie within wide limits regardless of track deviations within a narrow driving range.
  • the object is achieved in a method of the type mentioned by the features specified in the characterizing part of the main claim.
  • banknotes When designing securities and thus banknotes, several printing techniques are often used to increase security against falsification and counterfeiting. For example, in banknotes there are surface areas which are executed using the very complicated and complex steel intaglio printing technique, while other surface areas, for example for the design of background patterns, are printed using planographic printing technology.
  • the test level can be kept within a narrow range even if there are deviations from the test track with the same contamination, but possibly with a different print pattern, and with a track deviation. Since the print pattern is eliminated, the test track can also lead from the unprinted area of a bank note into the printed area, which gives great flexibility in the selection of the test tracks of different bank notes.
  • Testing within the invisible spectral range is not limited to the IR range.
  • Printing inks that are translucent in other spectral ranges of the invisible spectrum can of course also be used for testing in the sense of the invention.
  • Fig. 1 shows a banknote 1, the printed image is arranged so that a narrow edge of the note remains unprinted.
  • the areas 2 which are hatched twice within the printed image - arranged randomly in this example - are printed with the corresponding colors impermeable to IR light.
  • 4 is an indiscriminately selected test track, which alternately overflows with areas printed with IR-permeable and with IR-impermeable ink.
  • the marked areas B i , B 2 or B 3 are basically suitable for checking dirt. However, it is sufficient to admit only one of the areas, for example B 2, for testing.
  • test track runs partly in the completely unprinted area of the banknote. Even if the test device does not always scan a precisely adjusted test track due to mechanical inadequacies, the scatter of the measured values can be kept within narrow limits because the influence of the locally widely varying print image is eliminated and is generally evenly distributed in the contamination over large areas .
  • FIG. 2 shows an example of a test device with which the method according to the invention can be carried out.
  • the bank note 1 transported past the test device 7 in the direction of the arrow 6 is illuminated in the area of the test track with the aid of two tungsten lamps 8, which has a high IR component beyond the visible area.
  • the light remitted from the banknote passes through a diaphragm 9 to a lens arrangement 12.
  • a filter 10 is connected into the beam path of the optical system, which filter only allows the IR portion of the remitted light to reach a photodiode 15, which, in a known manner, produces the Changes lighting fluctuations due to contamination into corresponding electronically evaluable signals.
  • the measurement signal which is modulated depending on the contamination, is summed up along the scanned area and the total values are compared with a target value after passing through the measurement track.
  • Fig. 2 shows the possibility of decoupling the IR portion only on the receiver side.
  • U. can be maintained to compensate for the influence of extraneous light.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Claims (3)

1. Procédé pour contrôler le degré d'encrassement de supports de tracés, notamment de billets de banque, au moyen d'un dispositif émetteur- récepteur et pour analyser des signaux de mesure reçus afin de définir le degré d'encrassement, les supports de tracés étant imprimés au moins en partie avec des couleurs qui laissent passer la lumière dans une plage spectrale non visible, caractérisé en ce que le support de tracés (1) est soumis par le dispositif émetteur à une irridiation avec une lumière qui contient des parties de cette plage spectrale non visible et en ce que le dispositif récepteur reçoit les parties réfléchies de cette lumière le long d'une ou plusieurs voies de mesure (4) dans la zone des couleurs laissant passer la lumière.
2. Procédé selon la revendication 1, caractérisé en ce que le signal de mesure provenant des voies de mesure (4) est analysé dans les zones non imprimées et les zones imprimées du support de tracés (1).
3. Procédé selon la revendication 2, caractérisé en ce que le signal de mesure modulé par les encrassements est soumis à une sommation le long d'une zone d'exploration et en ce que les valeurs de sommation sont comparées avec une valeur de consigne après parcours des voies de mesure (4).
EP80104790A 1979-08-14 1980-08-13 Procédé pour l'examen du degré d'encrassement de supports d'enregistrement Expired EP0024053B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80104790T ATE5552T1 (de) 1979-08-14 1980-08-13 Verfahren zur pruefung des verschmutzungsgrades von aufzeichnungstraegern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2932962 1979-08-14
DE2932962A DE2932962C2 (de) 1979-08-14 1979-08-14 Verfahren zur Prüfung des Verschmutzungsgrades von Aufzeichnungsträgern, insbesondere von Banknoten

Publications (2)

Publication Number Publication Date
EP0024053A1 EP0024053A1 (fr) 1981-02-18
EP0024053B1 true EP0024053B1 (fr) 1983-12-07

Family

ID=6078467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104790A Expired EP0024053B1 (fr) 1979-08-14 1980-08-13 Procédé pour l'examen du degré d'encrassement de supports d'enregistrement

Country Status (5)

Country Link
US (1) US4650319A (fr)
EP (1) EP0024053B1 (fr)
JP (1) JPS5633530A (fr)
AT (1) ATE5552T1 (fr)
DE (1) DE2932962C2 (fr)

Families Citing this family (20)

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Publication number Priority date Publication date Assignee Title
KR890002004B1 (ko) * 1984-01-11 1989-06-07 가부시끼 가이샤 도오시바 지폐류 판별장치
JPS6118844A (ja) * 1984-07-06 1986-01-27 Glory Ltd 硬貨の汚れ検知装置
GB2164442A (en) * 1984-09-11 1986-03-19 De La Rue Syst Sensing the condition of a document
DE4002979A1 (de) * 1990-02-01 1991-08-08 Gao Ges Automation Org Wertpapier mit optisch variablem sicherheitselement
GB2284292A (en) * 1993-11-25 1995-05-31 Secr Defence Detection of counterfeit articles
JP4180715B2 (ja) 1998-12-14 2008-11-12 株式会社東芝 印刷物の汚損度判別装置
JP4322336B2 (ja) * 1998-12-21 2009-08-26 株式会社東芝 紙葉類の状態識別装置
CN1209314C (zh) * 1999-02-17 2005-07-06 欧洲工业技术开发公司 生产基于无水石膏Ⅲ或α无水石膏的水硬粘结剂的方法和所获得的水硬粘结剂
CA2358709C (fr) * 1999-02-17 2005-08-02 Cashcode Company Inc. Capteur optique avec une paroi plane
DE10346636A1 (de) * 2003-10-08 2005-05-12 Giesecke & Devrient Gmbh Vorrichtung und Verfahren zur Prüfung von Wertdokumenten
JP4984540B2 (ja) * 2006-01-17 2012-07-25 東芝三菱電機産業システム株式会社 印字マーク検査装置
DE102006053788A1 (de) * 2006-11-15 2008-05-21 Giesecke & Devrient Gmbh Verfahren zur Erkennung von Verschmutzungen im Bereich von Farbübergängen auf Wertdokumenten und Mittel zur Durchführung des Verfahrens
GB0820882D0 (en) * 2008-11-14 2008-12-24 Rue De Int Ltd Document of value and method for detecting soil level
US8780206B2 (en) * 2008-11-25 2014-07-15 De La Rue North America Inc. Sequenced illumination
US8265346B2 (en) 2008-11-25 2012-09-11 De La Rue North America Inc. Determining document fitness using sequenced illumination
US8749767B2 (en) 2009-09-02 2014-06-10 De La Rue North America Inc. Systems and methods for detecting tape on a document
US8509492B2 (en) * 2010-01-07 2013-08-13 De La Rue North America Inc. Detection of color shifting elements using sequenced illumination
US8433124B2 (en) * 2010-01-07 2013-04-30 De La Rue North America Inc. Systems and methods for detecting an optically variable material
US8400261B2 (en) * 2010-03-26 2013-03-19 Delphi Technologies, Inc. Interactive phone message control apparatus for a motor vehicle
US9053596B2 (en) 2012-07-31 2015-06-09 De La Rue North America Inc. Systems and methods for spectral authentication of a feature of a document

Family Cites Families (17)

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Publication number Priority date Publication date Assignee Title
US2731621A (en) * 1952-04-01 1956-01-17 Cgs Lab Inc Counterfeit detector
US3496371A (en) * 1966-05-26 1970-02-17 Mitsubishi Heavy Ind Ltd Apparatus for comparing sample document to standard including correlation
US3491243A (en) * 1966-08-26 1970-01-20 Taisuke Tsugami Authentication apparatus to measure color characteristics of paper documents
US3759382A (en) * 1971-09-16 1973-09-18 Pitney Bowes Inc Method, apparatus and system for fitness sorting and count verifying straps of currency
AT311097B (de) * 1972-03-21 1973-10-25 Gao Ges Automation Org Verfahren zur Messung des Verschmutzungsgrades von Banknoten od.dgl.
JPS5017895A (fr) * 1973-06-06 1975-02-25
US3916194A (en) * 1974-01-07 1975-10-28 Ardac Inc Infrared note validator
US3976198A (en) * 1974-04-02 1976-08-24 Pitney-Bowes, Inc. Method and apparatus for sorting currency
US3922557A (en) * 1974-04-02 1975-11-25 Pitney Bowes Inc Apparatus for the optical examination of articles
CH573634A5 (fr) * 1974-07-04 1976-03-15 Landis & Gyr Ag
DE2440550C3 (de) * 1974-08-21 1980-10-09 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schalter für Hilfsstromkreise
JPS5429397B2 (fr) * 1975-01-23 1979-09-22
JPS51132574A (en) * 1975-05-12 1976-11-17 Toshiba Corp Device for handling paper sheet group
JPS5211992A (en) * 1975-07-18 1977-01-29 Oki Electric Ind Co Ltd Note identifying equipment
IT1068657B (it) * 1976-11-03 1985-03-21 Nuovo Pignone Spa Metodo perfezionato per il controllo di banconote ed apparecchiature per realizzarlo
US4147430A (en) * 1976-11-10 1979-04-03 Ardac, Inc. Secondary detection system for security validation
AT349248B (de) * 1976-11-29 1979-03-26 Gao Ges Automation Org Verfahren zur dynamischen messung des verschmutzungsgrades von banknoten und pruefvorrichtung zur durchfuehrung dieses verfahrens

Also Published As

Publication number Publication date
DE2932962C2 (de) 1982-04-08
JPS5633530A (en) 1981-04-04
US4650319A (en) 1987-03-17
EP0024053A1 (fr) 1981-02-18
DE2932962A1 (de) 1981-02-26
ATE5552T1 (de) 1983-12-15
JPH0325837B2 (fr) 1991-04-09

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