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GB899856A - Improvements in inspection of sheet materials by photo-electric means - Google Patents

Improvements in inspection of sheet materials by photo-electric means

Info

Publication number
GB899856A
GB899856A GB2940161A GB2940161A GB899856A GB 899856 A GB899856 A GB 899856A GB 2940161 A GB2940161 A GB 2940161A GB 2940161 A GB2940161 A GB 2940161A GB 899856 A GB899856 A GB 899856A
Authority
GB
United Kingdom
Prior art keywords
photo
light
sheet
cell
gate
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
GB2940161A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB899856A publication Critical patent/GB899856A/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
    • G01N21/892—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
    • 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

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

899,856. Photo-electric inspection apparatus. NASH, P. Dec. 29, 1959 [Jan. 12, 1959], No. 29401/61. Divided out of 899,855. Class 40(3). An apparatus for the detection of surface elevations, such as wrinkles, in a moving sheet of normally smooth surface material, e.g. paper, includes a light-gate member 310 which yieldingly contacts one surface of the sheet 2, the line of contact being transverse to the direction of motion. Light from an elongated lamp 8, which may form part of the apparatus of Specification 899,855 passes between the light-gate 310 and sheet 2 to a photo-cell 308 in a housing 306 only when the presence of a wrinkle raises the lightgate, the photo-cell then giving an output. The light-gate may comprise more than one section and one photo-cell across the sheet. The apparatus may be used for the detection of deliberately created elevations for control purposes. Specifications 885,278 and 899,854 also are referred to.
GB2940161A 1959-01-12 1959-12-29 Improvements in inspection of sheet materials by photo-electric means Expired GB899856A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA765993 1959-01-12

Publications (1)

Publication Number Publication Date
GB899856A true GB899856A (en) 1962-06-27

Family

ID=4141083

Family Applications (2)

Application Number Title Priority Date Filing Date
GB4408759A Expired GB899855A (en) 1959-01-12 1959-12-29 Improvements in inspection of sheet materials by photo-electric means
GB2940161A Expired GB899856A (en) 1959-01-12 1959-12-29 Improvements in inspection of sheet materials by photo-electric means

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB4408759A Expired GB899855A (en) 1959-01-12 1959-12-29 Improvements in inspection of sheet materials by photo-electric means

Country Status (1)

Country Link
GB (2) GB899855A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000285A (en) * 1977-06-24 1979-01-04 Research Technology Film thickness detector

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1297892B (en) * 1963-04-23 1969-06-19 Lippke Paul Device for electro-optical testing of moving webs or sheets
DE102015102997A1 (en) * 2015-03-02 2016-09-08 BST ProControl GmbH Method and device for measuring material which is essentially expanded in two dimensions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000285A (en) * 1977-06-24 1979-01-04 Research Technology Film thickness detector
GB2000285B (en) * 1977-06-24 1982-01-27 Research Technology Film thickness detector

Also Published As

Publication number Publication date
GB899855A (en) 1962-06-27

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