JPS55157071A - Punch hole detector - Google Patents
Punch hole detectorInfo
- Publication number
- JPS55157071A JPS55157071A JP6599079A JP6599079A JPS55157071A JP S55157071 A JPS55157071 A JP S55157071A JP 6599079 A JP6599079 A JP 6599079A JP 6599079 A JP6599079 A JP 6599079A JP S55157071 A JPS55157071 A JP S55157071A
- Authority
- JP
- Japan
- Prior art keywords
- photo detector
- light flux
- projector
- receives
- detected
- 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.)
- Granted
Links
Abstract
PURPOSE: To detect the punch hole accurately, by splitting the photo detector, excluding the field of detection receiving the leakage light flux due to meandering through the reception of output signal of the photo detector and the detector for the end, and selecting other detection field as an effective one.
CONSTITUTION: When a detected objective 3 is in meandering, a photo detector 2A receives the radiated light flux from a projector 1. Further, a photo detector 20A to detect the end of the detected object 3 also receives the radiated light flux from the projector 10A, the output of a logical product element 6A is at logical 0, and it is detected that the photo detector 2A receives the light flux leaked with meandering and no mis-output is produced. On the other hand, the photo detector 2B receives the radiated light flux from the projector 1 by punched holes 4. Further, since the photo detector 20B does not receive the radiated light flux of the projector 10B, an output is produced from a logical sum element 7. Accordingly, the punched holes 4 of the detected object 3 can accurately be detected.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6599079A JPS55157071A (en) | 1979-05-25 | 1979-05-25 | Punch hole detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6599079A JPS55157071A (en) | 1979-05-25 | 1979-05-25 | Punch hole detector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55157071A true JPS55157071A (en) | 1980-12-06 |
JPS6113637B2 JPS6113637B2 (en) | 1986-04-14 |
Family
ID=13302948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6599079A Granted JPS55157071A (en) | 1979-05-25 | 1979-05-25 | Punch hole detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55157071A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0678351U (en) * | 1993-04-19 | 1994-11-04 | レンゴー株式会社 | Tape sticking device |
-
1979
- 1979-05-25 JP JP6599079A patent/JPS55157071A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0678351U (en) * | 1993-04-19 | 1994-11-04 | レンゴー株式会社 | Tape sticking device |
Also Published As
Publication number | Publication date |
---|---|
JPS6113637B2 (en) | 1986-04-14 |
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