JPS56161244A - Multiple feed detecting device - Google Patents
Multiple feed detecting deviceInfo
- Publication number
- JPS56161244A JPS56161244A JP6507380A JP6507380A JPS56161244A JP S56161244 A JPS56161244 A JP S56161244A JP 6507380 A JP6507380 A JP 6507380A JP 6507380 A JP6507380 A JP 6507380A JP S56161244 A JPS56161244 A JP S56161244A
- Authority
- JP
- Japan
- Prior art keywords
- light
- papers
- piles
- put together
- distribution
- 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
- Controlling Sheets Or Webs (AREA)
Abstract
PURPOSE: To make it possible to detect, with a relatively simple mechanism, feeding of more than two pieces irrespective of thickness of paper, by detecting distribution of reflecting light in the direction where light is applied onto edge surface of papers which are put together in piles.
CONSTITUTION: A light emitted from a light transmitter LT is applied onto edge surfaces of papers PP1 and PP2 which are put together in piles, and distribution of reflecting light in the direction where the papers PP1 and PP2 are put together in piles is detected by a light amount detector DET. In a normal condition when only the paper PP1 is processed, output of the light amount detector is to be located only on a mount of much quantity of reflecting light. In case if the papers PP1 and PP2 were fed by being put together in piles, distribution of reflecting light makes two mounts containing less quantity of reflection in the middle. And therefore, by processing with a device which processes output signal of the light amount detector DET, it is possible to detect feeding of more than two pieces of papers.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6507380A JPS56161244A (en) | 1980-05-16 | 1980-05-16 | Multiple feed detecting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6507380A JPS56161244A (en) | 1980-05-16 | 1980-05-16 | Multiple feed detecting device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56161244A true JPS56161244A (en) | 1981-12-11 |
Family
ID=13276404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6507380A Pending JPS56161244A (en) | 1980-05-16 | 1980-05-16 | Multiple feed detecting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56161244A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05294513A (en) * | 1992-04-17 | 1993-11-09 | Fuji Photo Film Co Ltd | Double feeding detection device for automatic paper sheet feeding device |
JPH0656313A (en) * | 1991-05-14 | 1994-03-01 | Fuji Xerox Co Ltd | Sheet detecting device |
US5806649A (en) * | 1994-06-15 | 1998-09-15 | Coin Bill Validator, Inc. | Paper currency validator |
US6144038A (en) * | 1998-03-23 | 2000-11-07 | Heidelberger Druckmaschinen Aktiengesellschaft | Method and device for detecting the position of stacked material |
EP1223132A2 (en) * | 2001-01-15 | 2002-07-17 | Leuze electronic GmbH + Co. | Optoelectric device |
JP2012035953A (en) * | 2010-08-05 | 2012-02-23 | Ricoh Co Ltd | Sheet type discriminating device, sheet feeder, and image forming apparatus |
JP2012035951A (en) * | 2010-08-05 | 2012-02-23 | Ricoh Co Ltd | Sheet thickness discriminating device, sheet feeder, and image forming apparatus |
-
1980
- 1980-05-16 JP JP6507380A patent/JPS56161244A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0656313A (en) * | 1991-05-14 | 1994-03-01 | Fuji Xerox Co Ltd | Sheet detecting device |
JPH05294513A (en) * | 1992-04-17 | 1993-11-09 | Fuji Photo Film Co Ltd | Double feeding detection device for automatic paper sheet feeding device |
US5806649A (en) * | 1994-06-15 | 1998-09-15 | Coin Bill Validator, Inc. | Paper currency validator |
US6144038A (en) * | 1998-03-23 | 2000-11-07 | Heidelberger Druckmaschinen Aktiengesellschaft | Method and device for detecting the position of stacked material |
EP1223132A2 (en) * | 2001-01-15 | 2002-07-17 | Leuze electronic GmbH + Co. | Optoelectric device |
EP1223132A3 (en) * | 2001-01-15 | 2003-11-05 | Leuze electronic GmbH + Co. | Optoelectric device |
JP2012035953A (en) * | 2010-08-05 | 2012-02-23 | Ricoh Co Ltd | Sheet type discriminating device, sheet feeder, and image forming apparatus |
JP2012035951A (en) * | 2010-08-05 | 2012-02-23 | Ricoh Co Ltd | Sheet thickness discriminating device, sheet feeder, and image forming apparatus |
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