JPS649589A - Sheet paper detector - Google Patents

Sheet paper detector

Info

Publication number
JPS649589A
JPS649589A JP62165856A JP16585687A JPS649589A JP S649589 A JPS649589 A JP S649589A JP 62165856 A JP62165856 A JP 62165856A JP 16585687 A JP16585687 A JP 16585687A JP S649589 A JPS649589 A JP S649589A
Authority
JP
Japan
Prior art keywords
slice
infrared
infrared ray
coarseness
fineness
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.)
Pending
Application number
JP62165856A
Other languages
Japanese (ja)
Inventor
Hidekatsu Uchida
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
Toshiba Intelligent Technology Co Ltd
Original Assignee
Toshiba Corp
Toshiba Intelligent Technology 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 Toshiba Corp, Toshiba Intelligent Technology Co Ltd filed Critical Toshiba Corp
Priority to JP62165856A priority Critical patent/JPS649589A/en
Publication of JPS649589A publication Critical patent/JPS649589A/en
Pending legal-status Critical Current

Links

Landscapes

  • Conveying Record Carriers (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)

Abstract

PURPOSE: To exactly and surely recognize a watermark prepared by the coarseness and fineness of fibers by automatically slicing transmitted light with slice data corresponding to change in the transmitted light of infrared rays caused by the coarseness/fineness of fibers consisting of paper sheets. CONSTITUTION: This device has an infrared ray radiating mean 1 for irradiating paper sheets P with infrared rays, an infrared ray detecting means 2 for detecting light transmitted from the papery sheets P by this infrared ray radiating means 1, a slice data preparing means 10 for preparing the slice data from the output signal of this infrared light detecting means and a slice means 10 for slicing the output signal of the infrared ray detecting means corresponding to the slice date prepared by this slide data preparing means. Namely, when the paper money P is conveyed between the radiator 1 and the infrared sensor 2, a CPU 10 generates a timing signal corresponding to the section of bar watermark part and slices normalized data according to a slice level. From the sliced result of this slice means, the watermark prepared by the coarseness/fineness of fibers can be exactly and surely recognized.
JP62165856A 1987-07-02 1987-07-02 Sheet paper detector Pending JPS649589A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62165856A JPS649589A (en) 1987-07-02 1987-07-02 Sheet paper detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62165856A JPS649589A (en) 1987-07-02 1987-07-02 Sheet paper detector

Publications (1)

Publication Number Publication Date
JPS649589A true JPS649589A (en) 1989-01-12

Family

ID=15820295

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62165856A Pending JPS649589A (en) 1987-07-02 1987-07-02 Sheet paper detector

Country Status (1)

Country Link
JP (1) JPS649589A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0480893A (en) * 1990-07-24 1992-03-13 Kiwa Ishiwatari Counterfeit paper money discriminating device
WO2003077187A1 (en) 2002-03-11 2003-09-18 Digital Verification Ltd. Currency verification

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0480893A (en) * 1990-07-24 1992-03-13 Kiwa Ishiwatari Counterfeit paper money discriminating device
WO2003077187A1 (en) 2002-03-11 2003-09-18 Digital Verification Ltd. Currency verification

Similar Documents

Publication Publication Date Title
CA2296537A1 (en) Cigarette making machine including band inspection
US4450352A (en) Method and device for counting sheet material
ES2143765T3 (en) APPARATUS AND METHOD FOR THE TESTING OF MATERIALS OF LAMINAR SHAPE, SUCH AS BANKNOTES OR VALUE PAPERS.
US3932755A (en) Device for detecting double sheet feeding
US6018164A (en) Transparency sensors
EP0160304A3 (en) Method and apparatus for measuring the fiber orientation of papers
JPS649589A (en) Sheet paper detector
CA1104236A (en) Method and apparatus for inspecting food products
ES2076234T3 (en) PROCEDURE FOR THE PREPARATION OF BANDS OF MATERIAL WITH PRECISE RECORD, IN PARTICULAR FOR THE MANUFACTURE OF SAFETY THREADS.
JPS5710171A (en) Original size detecting method of copying machine
JPS55115534A (en) Two-sheet feeding detection method
JPS6413695A (en) Damaged paper money discriminator
JPS54115136A (en) Electrophotographic apparatus
JPS57185153A (en) Divider for defective paper at side gauge in sheet printer
DE3663999D1 (en) Optico-electronic level detector with double pick-up elements
JPS5521243A (en) Label issuing device
JPS57199906A (en) Detector for constant amount of paper
JPS5652765A (en) Cut sheet feeder
JPS57210336A (en) Original feeding and copying machine
CA1036688A (en) Device for detecting double sheet feeding
JPH0641236Y2 (en) Original transmitted light amount detection device for diazo copying machine
JPS5595962A (en) Electrostatic copying machine
JPS574503A (en) Detector for thickness of sheetform object
JPS57155564A (en) Detector for density of original
ATE32274T1 (en) METHOD OF MAKING DOCUMENTS COPY-RESISTANT AND SUITABLE NON-COPY PAPER.