JPS5288050A - Transparent object detecting method - Google Patents

Transparent object detecting method

Info

Publication number
JPS5288050A
JPS5288050A JP415376A JP415376A JPS5288050A JP S5288050 A JPS5288050 A JP S5288050A JP 415376 A JP415376 A JP 415376A JP 415376 A JP415376 A JP 415376A JP S5288050 A JPS5288050 A JP S5288050A
Authority
JP
Japan
Prior art keywords
detecting method
object detecting
transparent object
film
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.)
Pending
Application number
JP415376A
Other languages
Japanese (ja)
Inventor
Tohei Kawakami
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP415376A priority Critical patent/JPS5288050A/en
Publication of JPS5288050A publication Critical patent/JPS5288050A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/171—Physical features of handled article or web
    • B65H2701/1712—Transparent

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

PURPOSE: Detection of the presence or absence of a film of 20μ or under of high calrity is made possible by placing a transparent film between two feflecting surfaces and refracting the light from a light source multiple times.
COPYRIGHT: (C)1977,JPO&Japio
JP415376A 1976-01-19 1976-01-19 Transparent object detecting method Pending JPS5288050A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP415376A JPS5288050A (en) 1976-01-19 1976-01-19 Transparent object detecting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP415376A JPS5288050A (en) 1976-01-19 1976-01-19 Transparent object detecting method

Publications (1)

Publication Number Publication Date
JPS5288050A true JPS5288050A (en) 1977-07-22

Family

ID=11576803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP415376A Pending JPS5288050A (en) 1976-01-19 1976-01-19 Transparent object detecting method

Country Status (1)

Country Link
JP (1) JPS5288050A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5424684U (en) * 1977-07-22 1979-02-17

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4862449A (en) * 1971-12-03 1973-08-31

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4862449A (en) * 1971-12-03 1973-08-31

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5424684U (en) * 1977-07-22 1979-02-17
JPS5729478Y2 (en) * 1977-07-22 1982-06-28

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