JPS57103080A - Object detector - Google Patents

Object detector

Info

Publication number
JPS57103080A
JPS57103080A JP56175109A JP17510981A JPS57103080A JP S57103080 A JPS57103080 A JP S57103080A JP 56175109 A JP56175109 A JP 56175109A JP 17510981 A JP17510981 A JP 17510981A JP S57103080 A JPS57103080 A JP S57103080A
Authority
JP
Japan
Prior art keywords
detection
detected
ultrasonic wave
detour
mis
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
JP56175109A
Other languages
Japanese (ja)
Inventor
Hisashi Sakamaki
Kyoshi Furuichi
Yoshimasa Kimura
Osamu Sawamura
Tsuneki Inuzuka
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP56175109A priority Critical patent/JPS57103080A/en
Publication of JPS57103080A publication Critical patent/JPS57103080A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/001—Acoustic presence detection

Abstract

PURPOSE:To enable detection with high accuracy, without mis-detection such as detour of a ultrasonic wave, by locating ultrasonic wave transmitter/receiver obliquely against an object to be detected and detecting the presence of the object. CONSTITUTION:Ultrasonic wave transmitter and receiver 101 and 103 are located opposingly with each other, and obliquely against a moving direction of an object to be detected 105 such as copied paper carried with a roller pair 106 and the pesence of the object 105 is detected with ultrasonic waves. The ultrasonic waves from the transmitter 101 are totally reflected by the oblique location to prevent reflection and detour from other objects, and to make detection of object with high accuracy without mis-detection.
JP56175109A 1981-10-30 1981-10-30 Object detector Pending JPS57103080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56175109A JPS57103080A (en) 1981-10-30 1981-10-30 Object detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56175109A JPS57103080A (en) 1981-10-30 1981-10-30 Object detector

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP50055075A Division JPS5834790B2 (en) 1975-05-06 1975-05-06 Butsutikenshiyutsusouchi

Publications (1)

Publication Number Publication Date
JPS57103080A true JPS57103080A (en) 1982-06-26

Family

ID=15990416

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56175109A Pending JPS57103080A (en) 1981-10-30 1981-10-30 Object detector

Country Status (1)

Country Link
JP (1) JPS57103080A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02136780A (en) * 1988-11-17 1990-05-25 Nireco Corp Ultrasonic detector
JPH02179472A (en) * 1988-12-29 1990-07-12 Nireco Corp Ultrasonic wave seam detector

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49104664A (en) * 1973-02-05 1974-10-03

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49104664A (en) * 1973-02-05 1974-10-03

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02136780A (en) * 1988-11-17 1990-05-25 Nireco Corp Ultrasonic detector
JPH02179472A (en) * 1988-12-29 1990-07-12 Nireco Corp Ultrasonic wave seam detector

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