JPS5637945A - Method of detecting abnormality of paper feed - Google Patents

Method of detecting abnormality of paper feed

Info

Publication number
JPS5637945A
JPS5637945A JP11291679A JP11291679A JPS5637945A JP S5637945 A JPS5637945 A JP S5637945A JP 11291679 A JP11291679 A JP 11291679A JP 11291679 A JP11291679 A JP 11291679A JP S5637945 A JPS5637945 A JP S5637945A
Authority
JP
Japan
Prior art keywords
paper
detector
paper feed
abnormality
feed
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
JP11291679A
Other languages
Japanese (ja)
Inventor
Yuji Watanabe
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP11291679A priority Critical patent/JPS5637945A/en
Publication of JPS5637945A publication Critical patent/JPS5637945A/en
Pending legal-status Critical Current

Links

Landscapes

  • Handling Of Cut Paper (AREA)
  • Controlling Sheets Or Webs (AREA)

Abstract

PURPOSE: To accurately detect abnormality of paper feed, by moving a detector together with paper for a copier or the like and detecting the abnormality in terms of the change in the detection signal of the detector.
CONSTITUTION: A noncontact type detector 5 is installed in a paper feed section so that the detector is located at one of the front and rear ends of paper 4, for example, at the front end 4a and moved together with the paper 4. When the paper 4 is jammed on the way of its feed, it is delayed and only the detector 5 is moved. As a result, the detector 5 does not detect the paper 4 but detects a guide 3 and the detection signal of the detector changes. The abnormality of the paper feed can be accurately detected in terms of the change without being affected by a paper feed error as in conventional cases.
COPYRIGHT: (C)1981,JPO&Japio
JP11291679A 1979-09-05 1979-09-05 Method of detecting abnormality of paper feed Pending JPS5637945A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11291679A JPS5637945A (en) 1979-09-05 1979-09-05 Method of detecting abnormality of paper feed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11291679A JPS5637945A (en) 1979-09-05 1979-09-05 Method of detecting abnormality of paper feed

Publications (1)

Publication Number Publication Date
JPS5637945A true JPS5637945A (en) 1981-04-11

Family

ID=14598691

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11291679A Pending JPS5637945A (en) 1979-09-05 1979-09-05 Method of detecting abnormality of paper feed

Country Status (1)

Country Link
JP (1) JPS5637945A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5028042A (en) * 1989-05-15 1991-07-02 Sharp Kabushiki Kaisha Image forming apparatus having a controller to prevent erroneous feeding from a rotatable cassette and method thereof
US20100066782A1 (en) * 2008-09-16 2010-03-18 Canon Kabushiki Kaisha Printing apparatus and printing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5028042A (en) * 1989-05-15 1991-07-02 Sharp Kabushiki Kaisha Image forming apparatus having a controller to prevent erroneous feeding from a rotatable cassette and method thereof
US20100066782A1 (en) * 2008-09-16 2010-03-18 Canon Kabushiki Kaisha Printing apparatus and printing method
US8511781B2 (en) * 2008-09-16 2013-08-20 Canon Kabushiki Kaisha Printing apparatus having movable sensor and method for using

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