JPS5784302A - Method for measuring fine gap - Google Patents

Method for measuring fine gap

Info

Publication number
JPS5784302A
JPS5784302A JP16024280A JP16024280A JPS5784302A JP S5784302 A JPS5784302 A JP S5784302A JP 16024280 A JP16024280 A JP 16024280A JP 16024280 A JP16024280 A JP 16024280A JP S5784302 A JPS5784302 A JP S5784302A
Authority
JP
Japan
Prior art keywords
fine gap
edge part
light emitting
light receiving
type measuring
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
JP16024280A
Other languages
Japanese (ja)
Other versions
JPS6226682B2 (en
Inventor
Chiaki Iwadare
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
Original Assignee
Toshiba 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, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP16024280A priority Critical patent/JPS5784302A/en
Publication of JPS5784302A publication Critical patent/JPS5784302A/en
Publication of JPS6226682B2 publication Critical patent/JPS6226682B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE:To measure the minimum width of a fine gap precisely by cutting the edge part of objects to be measured which form the fine gap by two optical cutting type measuring devices and observing said cut line. CONSTITUTION:The optical cutting type measuring device 9 comprising a light emitting device 11 and a light receiving device 12, and the optical cutting type measuring device 10 comprising a light emitting device 13 and a light receiving device 14 are provided at facing positions with respect to a plane along the fine gap 8, with an appropriate inclined angle being provided. The edge part 4 of a compressing chamber 2 and the edge part 5 of a rotary roller 3 are cut by optical bands emitted from the light emitting devices 11 and 13, the cut lines are observed by the light receiving devices 12 and 14, and the minimum width of the fine gap 8 is computed.
JP16024280A 1980-11-14 1980-11-14 Method for measuring fine gap Granted JPS5784302A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16024280A JPS5784302A (en) 1980-11-14 1980-11-14 Method for measuring fine gap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16024280A JPS5784302A (en) 1980-11-14 1980-11-14 Method for measuring fine gap

Publications (2)

Publication Number Publication Date
JPS5784302A true JPS5784302A (en) 1982-05-26
JPS6226682B2 JPS6226682B2 (en) 1987-06-10

Family

ID=15710769

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16024280A Granted JPS5784302A (en) 1980-11-14 1980-11-14 Method for measuring fine gap

Country Status (1)

Country Link
JP (1) JPS5784302A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5317386A (en) * 1991-09-06 1994-05-31 Eastman Kodak Company Optical monitor for measuring a gap between two rollers
US5581351A (en) * 1994-02-22 1996-12-03 Eastman Kodak Company Optical monitor for measuring thermal expansion of a rotating roller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5317386A (en) * 1991-09-06 1994-05-31 Eastman Kodak Company Optical monitor for measuring a gap between two rollers
US5581351A (en) * 1994-02-22 1996-12-03 Eastman Kodak Company Optical monitor for measuring thermal expansion of a rotating roller

Also Published As

Publication number Publication date
JPS6226682B2 (en) 1987-06-10

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