JPS5689001A - Detector for form sprocket hole - Google Patents
Detector for form sprocket holeInfo
- Publication number
- JPS5689001A JPS5689001A JP16607679A JP16607679A JPS5689001A JP S5689001 A JPS5689001 A JP S5689001A JP 16607679 A JP16607679 A JP 16607679A JP 16607679 A JP16607679 A JP 16607679A JP S5689001 A JPS5689001 A JP S5689001A
- Authority
- JP
- Japan
- Prior art keywords
- sprocket
- detector
- detection
- detectors
- sprocket holes
- 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
- Length Measuring Devices By Optical Means (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
PURPOSE: To improve detection precision and to widen a detection region by providing a means of detecting optically the existence of sprocket holes at least two points on the transport path of a continuous form having sprocket holes at prescribed intervals and then by detecting the feed state of the form by ANDing their outputs.
CONSTITUTION: A feeding device for a continuous form equipped with sprocket wheels and rollers is provided with detectors 7 and 7', consisting of light emitting devices 5 and 5' and photodetectors 6 and 6', with shifts (γ) from center lines 8 and 8' of sprocket holes 4 and 4' in the form feed direction to the center. As form 2 moves slantingly as shown by the arrow (to left), the output signal of detector 6' decreases and that of detector 6 increases. As form 2 moves in the opposite direction, the output signals of detectors 6 and 6' increase and decrease respectively. Those output signals are OR-ed to obtain a sprocket detection signal, so that sprocket positions can be detected with accuracy. Thus, while the detection precision is improved, the detection region is widened and the device can be manufactured at low cost.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16607679A JPS5689001A (en) | 1979-12-20 | 1979-12-20 | Detector for form sprocket hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16607679A JPS5689001A (en) | 1979-12-20 | 1979-12-20 | Detector for form sprocket hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5689001A true JPS5689001A (en) | 1981-07-20 |
Family
ID=15824527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16607679A Pending JPS5689001A (en) | 1979-12-20 | 1979-12-20 | Detector for form sprocket hole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5689001A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59108658A (en) * | 1982-11-24 | 1984-06-23 | ゼロックス・コ−ポレ−ション | Tracking device for web |
| JPS6283051U (en) * | 1985-11-12 | 1987-05-27 | ||
| JPH0158553U (en) * | 1987-10-07 | 1989-04-12 | ||
| EP0488295A2 (en) * | 1990-11-30 | 1992-06-03 | Mita Industrial Co., Ltd. | Automatic document conveying device |
| US10926207B2 (en) | 2016-06-03 | 2021-02-23 | Yamashin-Filter Corp. | Filter device |
-
1979
- 1979-12-20 JP JP16607679A patent/JPS5689001A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59108658A (en) * | 1982-11-24 | 1984-06-23 | ゼロックス・コ−ポレ−ション | Tracking device for web |
| JPH046634B2 (en) * | 1982-11-24 | 1992-02-06 | Xerox Corp | |
| JPS6283051U (en) * | 1985-11-12 | 1987-05-27 | ||
| JPH0158553U (en) * | 1987-10-07 | 1989-04-12 | ||
| JPH0512201Y2 (en) * | 1987-10-07 | 1993-03-29 | ||
| EP0488295A2 (en) * | 1990-11-30 | 1992-06-03 | Mita Industrial Co., Ltd. | Automatic document conveying device |
| EP0674239A1 (en) * | 1990-11-30 | 1995-09-27 | Mita Industrial Co., Ltd. | Automatic document conveying device |
| US10926207B2 (en) | 2016-06-03 | 2021-02-23 | Yamashin-Filter Corp. | Filter device |
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