JPS57184958A - Roll mark detecting device - Google Patents

Roll mark detecting device

Info

Publication number
JPS57184958A
JPS57184958A JP7049681A JP7049681A JPS57184958A JP S57184958 A JPS57184958 A JP S57184958A JP 7049681 A JP7049681 A JP 7049681A JP 7049681 A JP7049681 A JP 7049681A JP S57184958 A JPS57184958 A JP S57184958A
Authority
JP
Japan
Prior art keywords
signal
roll
detected
signals
ring
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
JP7049681A
Other languages
Japanese (ja)
Inventor
Toshiharu Watanabe
Yasunari Seto
Masayoshi Shimada
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
Nippon Steel Corp
Original Assignee
Toshiba Corp
Nippon Steel 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, Nippon Steel Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7049681A priority Critical patent/JPS57184958A/en
Publication of JPS57184958A publication Critical patent/JPS57184958A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

PURPOSE:To make it possible to perform accurate detection by taking out the defect signals of the surface of a material to be checked including roll marks by using a ring adder, comparing the signals with a reference level, and judging the presence or absence of the roll mark. CONSTITUTION:The detected defect signals are obtained by optically scanning the surface of the material to be inspected in the width direction. The roll marks caused by the flaws of rolls which feed the material to be inspected are detected from said defect signals. In this case, a ring adder 10, which includes adders 11a and 11b having a plurality of input and output terminals and a shift registers 13-1- 13-8 which are connected to the input and output terminals of the adders and have a specified number of bits, is provided. The output signal (a) is compared with a comparing level (d) by a comparator 20. When the signal (a) is larger, it is judged that the roll signal is present, and a signal (r) is outputted. Therefore, even when the roll mark signal cannot be detected due to the slipping of the rolls, disturbance, and the like, the ring addition is performed, and the positive detection can be performed.
JP7049681A 1981-05-11 1981-05-11 Roll mark detecting device Pending JPS57184958A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7049681A JPS57184958A (en) 1981-05-11 1981-05-11 Roll mark detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7049681A JPS57184958A (en) 1981-05-11 1981-05-11 Roll mark detecting device

Publications (1)

Publication Number Publication Date
JPS57184958A true JPS57184958A (en) 1982-11-13

Family

ID=13433185

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7049681A Pending JPS57184958A (en) 1981-05-11 1981-05-11 Roll mark detecting device

Country Status (1)

Country Link
JP (1) JPS57184958A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58156842A (en) * 1982-03-15 1983-09-17 Toshiba Corp Detector for flaw of roll
JPS6344152A (en) * 1986-08-12 1988-02-25 Koyo Seiko Co Ltd Appearance inspector
EP0316961A2 (en) * 1987-11-20 1989-05-24 Kabushiki Kaisha Toshiba Roll mark inspection apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58156842A (en) * 1982-03-15 1983-09-17 Toshiba Corp Detector for flaw of roll
JPH0330813B2 (en) * 1982-03-15 1991-05-01 Tokyo Shibaura Electric Co
JPS6344152A (en) * 1986-08-12 1988-02-25 Koyo Seiko Co Ltd Appearance inspector
EP0316961A2 (en) * 1987-11-20 1989-05-24 Kabushiki Kaisha Toshiba Roll mark inspection apparatus
EP0594220A2 (en) * 1987-11-20 1994-04-27 Kabushiki Kaisha Toshiba Roll mark inspection apparatus
EP0594220A3 (en) * 1987-11-20 1994-06-01 Toshiba Kk Roll mark inspection apparatus

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