JPS5488559A - Sheet feeder - Google Patents

Sheet feeder

Info

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
Application number
JP15687877A
Other languages
Japanese (ja)
Inventor
Taizo Ono
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15687877A priority Critical patent/JPS5488559A/en
Publication of JPS5488559A publication Critical patent/JPS5488559A/en
Pending legal-status Critical Current

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
JP15687877A 1977-12-23 1977-12-23 Sheet feeder Pending JPS5488559A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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