GB2020415A - Arrangement for the detection of faults on moving tapes - Google Patents

Arrangement for the detection of faults on moving tapes

Info

Publication number
GB2020415A
GB2020415A GB7913732A GB7913732A GB2020415A GB 2020415 A GB2020415 A GB 2020415A GB 7913732 A GB7913732 A GB 7913732A GB 7913732 A GB7913732 A GB 7913732A GB 2020415 A GB2020415 A GB 2020415A
Authority
GB
United Kingdom
Prior art keywords
streaks
arrangement
detection
illumination
web
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.)
Granted
Application number
GB7913732A
Other versions
GB2020415B (en
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of GB2020415A publication Critical patent/GB2020415A/en
Application granted granted Critical
Publication of GB2020415B publication Critical patent/GB2020415B/en
Expired 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
    • G01N21/8914—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined
    • G01N21/8916—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined for testing photographic material

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)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

An arrangement for the detection of surface faults in the form of streaks on continuously moving webs comprising a source of light (206) for illuminating the web and a light receiving device (at 211) arranged at the angle of reflection. The source of light provides a substantially rectangular area of illumination on the tape having two sides parallel with the direction of movement (203) of the tape. The width of the rectangle is about twice the greatest expected width of the streaks. The streaks are detected by observing or recording the change in intensity of illumination in a plane of observation passing through the radiation field parallel to the web, using a ground glass screen, a magnifying lens, an image tube and photographic film or a slit and photodetector to scan the observation plane. <IMAGE>
GB7913732A 1978-04-19 1979-04-19 Arrangement for the detection of faults of moving tapes Expired GB2020415B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2816986A DE2816986C3 (en) 1978-04-19 1978-04-19 Arrangement for searching for errors on moving tapes

Publications (2)

Publication Number Publication Date
GB2020415A true GB2020415A (en) 1979-11-14
GB2020415B GB2020415B (en) 1983-01-12

Family

ID=6037410

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7913732A Expired GB2020415B (en) 1978-04-19 1979-04-19 Arrangement for the detection of faults of moving tapes

Country Status (6)

Country Link
JP (1) JPS54141189A (en)
BE (1) BE874785A (en)
DE (1) DE2816986C3 (en)
FR (1) FR2423771A1 (en)
GB (1) GB2020415B (en)
IT (1) IT7948759A0 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0297462A2 (en) * 1987-07-01 1989-01-04 Fuji Photo Film Co., Ltd. Tape defect detecting system
USD831908S1 (en) 2013-05-02 2018-10-23 Techtronic Floor Care Technology Limited Floor cleaning device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159271B (en) * 1984-04-27 1988-05-18 Nissan Motor Surface flaw detecting method and apparatus
DE3624366A1 (en) * 1986-07-18 1988-01-21 Karlheinz Steuernagel Device and method for the optical representation of defects on a surface

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1573508C3 (en) * 1966-09-22 1974-10-10 Bayer Ag, 5090 Leverkusen Device for searching for and locating strips of accumulating webs in the production of photographic papers and films
BE757900A (en) * 1969-10-24 1971-04-23 Agfa Gevaert Nv DEVICE FOR TROUBLESHOOTING IN MOVING OPTICALLY TRANSPARENT MATERIALS
GB1407409A (en) * 1971-10-27 1975-09-24 Ferranti Ltd Detection of blemishes in a surface

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0297462A2 (en) * 1987-07-01 1989-01-04 Fuji Photo Film Co., Ltd. Tape defect detecting system
EP0297462A3 (en) * 1987-07-01 1989-08-30 Fuji Photo Film Co., Ltd. Tape defect detecting system
USD831908S1 (en) 2013-05-02 2018-10-23 Techtronic Floor Care Technology Limited Floor cleaning device

Also Published As

Publication number Publication date
DE2816986A1 (en) 1979-10-25
FR2423771A1 (en) 1979-11-16
FR2423771B1 (en) 1984-03-16
JPS54141189A (en) 1979-11-02
BE874785A (en) 1979-07-02
DE2816986C3 (en) 1986-03-27
GB2020415B (en) 1983-01-12
IT7948759A0 (en) 1979-04-17
DE2816986B2 (en) 1980-02-21

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee