JPS5567676A - Paper sensor unit - Google Patents
Paper sensor unitInfo
- 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
Links
Landscapes
- 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
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)
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)
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 |
-
1978
- 1978-11-16 JP JP14145378A patent/JPS5567676A/en active Pending
Patent Citations (2)
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)
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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