JPS5773603A - Sensor for imperfect collation monitoring device - Google Patents

Sensor for imperfect collation monitoring device

Info

Publication number
JPS5773603A
JPS5773603A JP15049880A JP15049880A JPS5773603A JP S5773603 A JPS5773603 A JP S5773603A JP 15049880 A JP15049880 A JP 15049880A JP 15049880 A JP15049880 A JP 15049880A JP S5773603 A JPS5773603 A JP S5773603A
Authority
JP
Japan
Prior art keywords
sensor
imperfect
light sources
collation
paper surface
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
JP15049880A
Other languages
Japanese (ja)
Inventor
Nobuki Kobayashi
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
Priority to JP15049880A priority Critical patent/JPS5773603A/en
Publication of JPS5773603A publication Critical patent/JPS5773603A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE:To monitor imperfect collation with high reliability without any influence of variations in distance between folded leaves of paper and a sensor, by using a sensor having two light sources and a photodetector. CONSTITUTION:A paper surface to be measured is irradiated by two light sources, and its reflected light is received by a photodetector to cancel variations in sensitivity due to fluctuations of a paper surface position. For example, when imperfect collation is monitored by using a sensor a fitted under the stack table 3 of a collating machine, two light sources B and B' are used in the sensor A to irradiate irradiated surfaces (d)-(c) among irradiated surfaces (f)-(g) with light from both the light sources, obtaining double brightness. When the paper surface moves as shown by an arrow 4, the distance between a photodetector (not shown in figure) near the light sources and the paper surface increases, but area having double brightness also increases, so that the both cancel mutually. Consequently, the quantity of light that the sensor A receives is unchanged, and imperfect collation is monitored with high reliability.
JP15049880A 1980-10-27 1980-10-27 Sensor for imperfect collation monitoring device Pending JPS5773603A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15049880A JPS5773603A (en) 1980-10-27 1980-10-27 Sensor for imperfect collation monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15049880A JPS5773603A (en) 1980-10-27 1980-10-27 Sensor for imperfect collation monitoring device

Publications (1)

Publication Number Publication Date
JPS5773603A true JPS5773603A (en) 1982-05-08

Family

ID=15498170

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15049880A Pending JPS5773603A (en) 1980-10-27 1980-10-27 Sensor for imperfect collation monitoring device

Country Status (1)

Country Link
JP (1) JPS5773603A (en)

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