JPS6343703B2 - - Google Patents

Info

Publication number
JPS6343703B2
JPS6343703B2 JP55145023A JP14502380A JPS6343703B2 JP S6343703 B2 JPS6343703 B2 JP S6343703B2 JP 55145023 A JP55145023 A JP 55145023A JP 14502380 A JP14502380 A JP 14502380A JP S6343703 B2 JPS6343703 B2 JP S6343703B2
Authority
JP
Japan
Prior art keywords
film
light
hole
visible light
reflected
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
JP55145023A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5767845A (en
Inventor
Atsushi Akamatsu
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.)
Mitsubishi Chemical Corp
Original Assignee
Mitsubishi Plastics Industries 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 Mitsubishi Plastics Industries Ltd filed Critical Mitsubishi Plastics Industries Ltd
Priority to JP14502380A priority Critical patent/JPS5767845A/ja
Publication of JPS5767845A publication Critical patent/JPS5767845A/ja
Publication of JPS6343703B2 publication Critical patent/JPS6343703B2/ja
Granted 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
    • G01N21/8901—Optical details; Scanning details
    • 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
    • G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
    • G01N21/894—Pinholes
    • 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
    • G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
    • G01N21/896—Optical defects in or on transparent materials, e.g. distortion, surface flaws in conveyed flat sheet or rod

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)
  • Controlling Sheets Or Webs (AREA)
JP14502380A 1980-10-16 1980-10-16 Method for detecting perforation of transparent film Granted JPS5767845A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14502380A JPS5767845A (en) 1980-10-16 1980-10-16 Method for detecting perforation of transparent film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14502380A JPS5767845A (en) 1980-10-16 1980-10-16 Method for detecting perforation of transparent film

Publications (2)

Publication Number Publication Date
JPS5767845A JPS5767845A (en) 1982-04-24
JPS6343703B2 true JPS6343703B2 (enrdf_load_stackoverflow) 1988-09-01

Family

ID=15375635

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14502380A Granted JPS5767845A (en) 1980-10-16 1980-10-16 Method for detecting perforation of transparent film

Country Status (1)

Country Link
JP (1) JPS5767845A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7327278B2 (ja) * 2020-05-29 2023-08-16 王子ホールディングス株式会社 シート状物の欠陥検査装置及び製造方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS537288A (en) * 1976-07-08 1978-01-23 Hamamatsu Tv Co Ltd Device for detecting flaws of transparent board

Also Published As

Publication number Publication date
JPS5767845A (en) 1982-04-24

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