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JPS5578381A - False and true discrimination unit of printed object - Google Patents

False and true discrimination unit of printed object

Info

Publication number
JPS5578381A
JPS5578381A JP15055178A JP15055178A JPS5578381A JP S5578381 A JPS5578381 A JP S5578381A JP 15055178 A JP15055178 A JP 15055178A JP 15055178 A JP15055178 A JP 15055178A JP S5578381 A JPS5578381 A JP S5578381A
Authority
JP
Japan
Prior art keywords
printed object
decision circuit
pattern signal
false
true
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
JP15055178A
Other languages
Japanese (ja)
Inventor
Koichi Komatsu
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
Toshiba Corp
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15055178A priority Critical patent/JPS5578381A/en
Publication of JPS5578381A publication Critical patent/JPS5578381A/en
Pending legal-status Critical Current

Links

Landscapes

  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Image Processing (AREA)
  • Image Analysis (AREA)

Abstract

PURPOSE: To discriminate false or true of a printed object by the difference signal between an optical pattern signal and an element distribution pattern signal of print ink.
CONSTITUTION: For tested printed object A which moves in the arrow B direction, an optical pattern signal taking-out means consisting of light source 1 and photo sensor 2, X ray generator 4 and secondary fluorescent X ray detector 5 are arranged. The optical pattern signal from amplifier 3 and the element distribution pattern signal from crest analyzer 6 are inputted to difference components decision circuit 7. The output of amplifier 3 is supplied to reference pattern decision circuit 8 also. True or false of printed object A is discriminated by logical operation circuit 9 where outputs of difference components decision circuit 7 and reference pattern decision circuit 8 are inputted. As a result, no comparison reference pattern is required, and the discrimination function is not lowered even for change of the moving speed of the printed object and positional slippage of it.
COPYRIGHT: (C)1980,JPO&Japio
JP15055178A 1978-12-07 1978-12-07 False and true discrimination unit of printed object Pending JPS5578381A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15055178A JPS5578381A (en) 1978-12-07 1978-12-07 False and true discrimination unit of printed object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15055178A JPS5578381A (en) 1978-12-07 1978-12-07 False and true discrimination unit of printed object

Publications (1)

Publication Number Publication Date
JPS5578381A true JPS5578381A (en) 1980-06-12

Family

ID=15499339

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15055178A Pending JPS5578381A (en) 1978-12-07 1978-12-07 False and true discrimination unit of printed object

Country Status (1)

Country Link
JP (1) JPS5578381A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6451595A (en) * 1987-08-24 1989-02-27 Oki Electric Ind Co Ltd Paper money discriminator
JPH04291485A (en) * 1991-03-19 1992-10-15 Fujitsu Ltd Sheet paper processor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6451595A (en) * 1987-08-24 1989-02-27 Oki Electric Ind Co Ltd Paper money discriminator
JPH04291485A (en) * 1991-03-19 1992-10-15 Fujitsu Ltd Sheet paper processor

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