JPS6432153A - Method and instrument for measuring characteristic of sheet type material - Google Patents

Method and instrument for measuring characteristic of sheet type material

Info

Publication number
JPS6432153A
JPS6432153A JP18926987A JP18926987A JPS6432153A JP S6432153 A JPS6432153 A JP S6432153A JP 18926987 A JP18926987 A JP 18926987A JP 18926987 A JP18926987 A JP 18926987A JP S6432153 A JPS6432153 A JP S6432153A
Authority
JP
Japan
Prior art keywords
light
sheet material
type material
reflecting
sheet type
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
JP18926987A
Other languages
Japanese (ja)
Inventor
Hirotoshi Ishikawa
Seiichiro Kiyobe
Shigeo Takahashi
Tomoyuki Yamada
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
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 Yokogawa Electric Corp filed Critical Yokogawa Electric Corp
Priority to JP18926987A priority Critical patent/JPS6432153A/en
Publication of JPS6432153A publication Critical patent/JPS6432153A/en
Pending 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
    • G01N21/86—Investigating moving sheets

Abstract

PURPOSE:To measure the characteristics of a sheet type material without being affected by its quality by passing the sheet type material between a couple of plane reflecting plates, projecting an infrared ray on the sheet type material, and detecting the quantity of transmitted infrared rays. CONSTITUTION:The 1st reflecting plate 6a and 2nd reflecting plate 6b are provided and the surfaces of the reflecting mirrors 6a and 6b are formed to staircase-shaped concave mirrors 7a and 7b. Then the sheet material 5 is moved between the reflecting plates 6a and 6b. The infrared rays from a light source 1 are passed through thin hole 6'b of the 2nd reflecting plate 6b to irradiate the sheet material 5. The light projected on the measurement center C of the sheet material 5 is transmitted through the sheet material 5 and enters a detector 9. At this time, the remaining light is reflected by the reflecting plates 6a and 6b to return to the measurement center C and enters the detector 9. Thus, the ratio of the light incident on the detector 9 is determined by the property, etc., of the sheet material. The ratio of the light in the measurement center C and reflected light is therefore detected, so the characteristics are measured with high accuracy without being affected by the paper quality.
JP18926987A 1987-07-29 1987-07-29 Method and instrument for measuring characteristic of sheet type material Pending JPS6432153A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18926987A JPS6432153A (en) 1987-07-29 1987-07-29 Method and instrument for measuring characteristic of sheet type material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18926987A JPS6432153A (en) 1987-07-29 1987-07-29 Method and instrument for measuring characteristic of sheet type material

Publications (1)

Publication Number Publication Date
JPS6432153A true JPS6432153A (en) 1989-02-02

Family

ID=16238487

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18926987A Pending JPS6432153A (en) 1987-07-29 1987-07-29 Method and instrument for measuring characteristic of sheet type material

Country Status (1)

Country Link
JP (1) JPS6432153A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0453797A2 (en) * 1990-04-26 1991-10-30 Yokogawa Electric Corporation Infrared ray moisture meter
US5355561A (en) * 1990-11-02 1994-10-18 Maschinenfabrik Rieter Ag Method and apparatus for measuring a characteristic of a fiber structure, such as a fiber composite or a sliver

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5317388A (en) * 1976-07-30 1978-02-17 Industrial Nucleonics Corp Method of and apparatus for measuring quality

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5317388A (en) * 1976-07-30 1978-02-17 Industrial Nucleonics Corp Method of and apparatus for measuring quality

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0453797A2 (en) * 1990-04-26 1991-10-30 Yokogawa Electric Corporation Infrared ray moisture meter
US5355561A (en) * 1990-11-02 1994-10-18 Maschinenfabrik Rieter Ag Method and apparatus for measuring a characteristic of a fiber structure, such as a fiber composite or a sliver

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