JPS5488559A - Sheet feeder - Google Patents
Sheet feederInfo
- Publication number
- JPS5488559A JPS5488559A JP15687877A JP15687877A JPS5488559A JP S5488559 A JPS5488559 A JP S5488559A JP 15687877 A JP15687877 A JP 15687877A JP 15687877 A JP15687877 A JP 15687877A JP S5488559 A JPS5488559 A JP S5488559A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- cam
- fed
- thickness
- detecting means
- 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 With Unspecified Measuring Means (AREA)
- Controlling Sheets Or Webs (AREA)
Abstract
PURPOSE: To exactly detect superimposed sheets fed, though transparent, by providing rotating means for rotating at predetermined angle in response to the thickness of the fed sheet upon making contact with the fed sheet, and detecting means for detecting the rotated amount of the rotating means.
CONSTITUTION: There are provided a disc cam 7 and detecting means 16 having a light emission element 18 and a light receiving element 19 over a sheet 9 fed on a conveying plate 6. The cam 7 is urged by a recoil spring 14 in the direction opposite to the depression of the sheet, and restricted in rotation by a cam stopper 15. When the sheet 2 makes contact with the cam 7, the cam 7 is rotated in the direction for reducing the radius of the portion making contact with the sheet to thus interrupt the means 16. Since different detecting means is interrupted according to the thickness of the sheet as thus constructed, it can detect the thickness of the sheet and superipmposed sheets fed.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15687877A JPS5488559A (en) | 1977-12-23 | 1977-12-23 | Sheet feeder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15687877A JPS5488559A (en) | 1977-12-23 | 1977-12-23 | Sheet feeder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5488559A true JPS5488559A (en) | 1979-07-13 |
Family
ID=15637356
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15687877A Pending JPS5488559A (en) | 1977-12-23 | 1977-12-23 | Sheet feeder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5488559A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090257800A1 (en) * | 2008-04-09 | 2009-10-15 | Fuji Xerox Co., Ltd. | Position detection apparatus, paper thickness detection apparatus, belt position detection apparatus, and image forming apparatus |
-
1977
- 1977-12-23 JP JP15687877A patent/JPS5488559A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090257800A1 (en) * | 2008-04-09 | 2009-10-15 | Fuji Xerox Co., Ltd. | Position detection apparatus, paper thickness detection apparatus, belt position detection apparatus, and image forming apparatus |
US8706018B2 (en) * | 2008-04-09 | 2014-04-22 | Fuji Xerox Co., Ltd. | Position detection apparatus, paper thickness detection apparatus, belt position detection apparatus, and image forming apparatus |
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