GB1372403A - Opticaldetectors for inspecting the mechanical condition of samples - Google Patents

Opticaldetectors for inspecting the mechanical condition of samples

Info

Publication number
GB1372403A
GB1372403A GB5249671A GB5249671A GB1372403A GB 1372403 A GB1372403 A GB 1372403A GB 5249671 A GB5249671 A GB 5249671A GB 5249671 A GB5249671 A GB 5249671A GB 1372403 A GB1372403 A GB 1372403A
Authority
GB
United Kingdom
Prior art keywords
edge
bank
note
output
light
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
GB5249671A
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric Co Ltd
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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Publication of GB1372403A publication Critical patent/GB1372403A/en
Expired 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
    • G07D7/187—Detecting defacement or contamination, e.g. dirt
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/956—Inspecting patterns on the surface of objects
    • 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
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)

Abstract

1372403 Photo-electric fault detectors TOKYO SHIBAURA ELECTRIC CO Ltd 11 Nov 1971 [11 Nov 1970] 52496/71 Heading G1A Tears or dirt on the edges or other boundary portions of bank-notes or other such sheets bearing a printed pattern are detected photoelectrically by an arrangement which can deal with sheets which have been fed incorrectly and are angled or shifted transversely with respect to the directions of movement. For one edge, light from lamp 17 is projected through and past edge area 12 to a linear array of photo-detectors 18a. These are arranged in the gating circuit of Fig.2, each detector channel of which is provided with a Schmitt circuit 22 whose discrimination level is set so as to produce an output when direct light is incident on the particular detector but not when light transmitted through the sheet is incident. Of three detectors 18a(i-1), 18a(i) and 18a(i+1) are considered, the first receives light wholly, via the bank-note, the second receives light passing the edge region i.e. partially through and partially direct, and the third receives direct light. The combination of inverters 23 and AND gates 24, 25 is such that only AND gate 25(i), corresponding to the edge portion itself produces an output, this being representative of an intensity level corresponding to the condition (torn, dirty &c.) at a certain distance within the edge of the bank-note (in Fig.2, given by the output of amplifier 21(i-1) delivered to one input of AND gate 25(i)). The AND gates 25 are connected to an OR-gate such that whichever is effective (depending on the transverse shift (or misorientation) of the banknote, it has its output passed to a comparison circuit 28 where the edge signal is compared with a reference signal representative of a perfect edge. Depending on the quality the note may be rejected. A duplicate photo-electric system may be provided for the lower edge. It is also possible to monitor other portions of the bank-note as long as a defined boundary exists whereby the levels of the Schmitt triggers may be set.
GB5249671A 1970-11-11 1971-11-11 Opticaldetectors for inspecting the mechanical condition of samples Expired GB1372403A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1970111205U JPS5116319Y1 (en) 1970-11-11 1970-11-11

Publications (1)

Publication Number Publication Date
GB1372403A true GB1372403A (en) 1974-10-30

Family

ID=14555161

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5249671A Expired GB1372403A (en) 1970-11-11 1971-11-11 Opticaldetectors for inspecting the mechanical condition of samples

Country Status (3)

Country Link
US (1) US3718823A (en)
JP (1) JPS5116319Y1 (en)
GB (1) GB1372403A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1521263A (en) * 1974-08-22 1978-08-16 Ti Ltd Electro-optical position monitoring and control means
CH609795A5 (en) * 1976-04-30 1979-03-15 Gretag Ag
FR2360133A1 (en) * 1976-07-30 1978-02-24 Titn METHOD AND APPARATUS FOR SCANNING A SUPPORT WITH COMPENSATION FOR POSITIONING DEFECTS AND VARIATIONS IN DIMENSIONS
AT349248B (en) * 1976-11-29 1979-03-26 Gao Ges Automation Org PROCEDURE FOR DYNAMIC MEASUREMENT OF THE DEGREE OF CONTAMINATION OF BANKNOTES AND TESTING DEVICE FOR PERFORMING THIS PROCESS
US4875776A (en) * 1979-09-07 1989-10-24 Diffracto Ltd. Electro-optical inspection
US4341472A (en) * 1980-09-15 1982-07-27 Rca Corporation Method and apparatus for positioning a tapered body
US4429991A (en) * 1981-08-17 1984-02-07 The Perkin-Elmer Corporation Method for detecting physical anomalies of U.S. currency
DE3139365C2 (en) * 1981-10-02 1993-10-14 Gao Ges Automation Org Method for checking the edge area of banknotes and device for carrying out the method
JPS5882107A (en) * 1981-10-27 1983-05-17 ドウ・ラ・リユ・システムズ・リミテイド Method and device for detecting state of sheet
GB2121533A (en) * 1982-06-01 1983-12-21 De La Rue Syst Optical detection system for features on a sheet or web
US4523850A (en) * 1982-10-14 1985-06-18 Rca Corporation System for positioning a body
JPS59127186A (en) * 1983-01-08 1984-07-21 ロ−レルバンクマシン株式会社 Discrimination of paper money
US4509265A (en) * 1983-03-21 1985-04-09 General Electric Company Turbine blade measurement
JPH0799324B2 (en) * 1987-07-02 1995-10-25 富士写真フイルム株式会社 Bonding inspection device
EP0435057A1 (en) * 1989-12-20 1991-07-03 Nitto Denko Corporation A wafer shape detecting method
DE19506456C2 (en) * 1995-02-24 1999-07-01 Boewe Systec Ag Control device for monitoring the running of two superimposed paper webs in a paper processing machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS447278Y1 (en) * 1965-06-14 1969-03-18
JPS4823460B1 (en) * 1968-11-18 1973-07-13
CH487459A (en) * 1969-01-24 1970-03-15 Lonza Ag Photoelectric control device

Also Published As

Publication number Publication date
US3718823A (en) 1973-02-27
JPS5116319Y1 (en) 1976-04-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PE20 Patent expired after termination of 20 years