JPS5567676A - Paper sensor unit - Google Patents

Paper sensor unit

Info

Publication number
JPS5567676A
JPS5567676A JP14145378A JP14145378A JPS5567676A JP S5567676 A JPS5567676 A JP S5567676A JP 14145378 A JP14145378 A JP 14145378A JP 14145378 A JP14145378 A JP 14145378A JP S5567676 A JPS5567676 A JP S5567676A
Authority
JP
Japan
Prior art keywords
paper
ultrasonic waves
ultrasonic
running path
projection axis
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
JP14145378A
Other languages
Japanese (ja)
Inventor
Takashi Otsuka
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.)
Micron Kiki Co Ltd
Original Assignee
Micron Kiki 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 Micron Kiki Co Ltd filed Critical Micron Kiki Co Ltd
Priority to JP14145378A priority Critical patent/JPS5567676A/en
Publication of JPS5567676A publication Critical patent/JPS5567676A/en
Pending legal-status Critical Current

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  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE: To enable to detect the paper without malfunction, by providing the ultrasonic, by providing the ultrasonic wave oscillation element so that the ultrasonic waves can be fully reflected from the surface of detected member.
CONSTITUTION: Detected object 11(e.g.paper) runs on the running path 10. A pair of ultrasonic oscillation element 12 and reception element 13 are coaxially placed by clipping the running path 10. The projection axis P is set so that the angle θ formed between the vertical line R-S at the cross point Q between the projection axis P of ultrasonic waves and the running path 10 of the detected object 11, and the projection axis P, can be more than the critical angle of ultrasonic waves to paper. When the paper 11 is present at the point Q in the running path 10, the ultrasonic waves can not reach the reception element 13 with the full reflection on the surface of the paper 11 with the principle of reflection of ultrasonic waves.
COPYRIGHT: (C)1980,JPO&Japio
JP14145378A 1978-11-16 1978-11-16 Paper sensor unit Pending JPS5567676A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14145378A JPS5567676A (en) 1978-11-16 1978-11-16 Paper sensor unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14145378A JPS5567676A (en) 1978-11-16 1978-11-16 Paper sensor unit

Publications (1)

Publication Number Publication Date
JPS5567676A true JPS5567676A (en) 1980-05-21

Family

ID=15292254

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14145378A Pending JPS5567676A (en) 1978-11-16 1978-11-16 Paper sensor unit

Country Status (1)

Country Link
JP (1) JPS5567676A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897615A (en) * 1981-12-08 1983-06-10 Kumagai Gumi Ltd Automatic collimating method
JPH02136780A (en) * 1988-11-17 1990-05-25 Nireco Corp Ultrasonic detector

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5013653B1 (en) * 1972-09-11 1975-05-21
JPS51130250A (en) * 1975-05-06 1976-11-12 Canon Inc Apparatus for searching objects

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5013653B1 (en) * 1972-09-11 1975-05-21
JPS51130250A (en) * 1975-05-06 1976-11-12 Canon Inc Apparatus for searching objects

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897615A (en) * 1981-12-08 1983-06-10 Kumagai Gumi Ltd Automatic collimating method
JPH02136780A (en) * 1988-11-17 1990-05-25 Nireco Corp Ultrasonic detector

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