JPS5533116A - Detecting method of paper - Google Patents

Detecting method of paper

Info

Publication number
JPS5533116A
JPS5533116A JP10558078A JP10558078A JPS5533116A JP S5533116 A JPS5533116 A JP S5533116A JP 10558078 A JP10558078 A JP 10558078A JP 10558078 A JP10558078 A JP 10558078A JP S5533116 A JPS5533116 A JP S5533116A
Authority
JP
Japan
Prior art keywords
paper
pressure sensitive
conductive piece
paper feed
conductive rubber
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
JP10558078A
Other languages
Japanese (ja)
Inventor
Yukio Sakano
Yoshio Kawajiri
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 JP10558078A priority Critical patent/JPS5533116A/en
Publication of JPS5533116A publication Critical patent/JPS5533116A/en
Pending legal-status Critical Current

Links

Landscapes

  • Paper Feeding For Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Controlling Sheets Or Webs (AREA)

Abstract

PURPOSE: To surely detect the presence or not of paper by respectively opposedly contacting a conductive piece and pressure sensitive conductive rubber with both sides of the paper passing in-between on the way of the paper feed path and detecting the presence or not of electrical conduction betwen both.
CONSTITUTION: A paper feed path 8 is formed between paper feed guides 72 and 71, 73 and a conductive piece 1 which is vertically slidable and is grounded is fitted between the paper guides 71 and 73. In opposition to one end of the conductive piece 1, pressure sensitive conductive rubber 2 is disposed to the paper feed guide 72 with the paper in-between so that its surface becomes flush to the guide 72. Between these is insulated by an insulator 3. Pressure is applied to the surface of the pressure sensitive conductive rubber 2 by the conductive piece 1 in synchronization with the timing at which the presence or not of the paper being fed is desired to be detected and the presence or not of electrical conduction between the conductive piece 1 and pressure sensitive conductive rubber 2 is detected with an inverter I. Hence, the presence or not of the paper may be detected irrespective to the thickness of the paper.
COPYRIGHT: (C)1980,JPO&Japio
JP10558078A 1978-08-31 1978-08-31 Detecting method of paper Pending JPS5533116A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10558078A JPS5533116A (en) 1978-08-31 1978-08-31 Detecting method of paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10558078A JPS5533116A (en) 1978-08-31 1978-08-31 Detecting method of paper

Publications (1)

Publication Number Publication Date
JPS5533116A true JPS5533116A (en) 1980-03-08

Family

ID=14411435

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10558078A Pending JPS5533116A (en) 1978-08-31 1978-08-31 Detecting method of paper

Country Status (1)

Country Link
JP (1) JPS5533116A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004210475A (en) * 2002-12-27 2004-07-29 Canon Electronics Inc Sheet material information detecting device, sheet material handling device with the same, and signal output device
US7152861B2 (en) 2002-06-04 2006-12-26 Canon Kabushiki Kaisha Double feed detection method and double feed detection apparatus of sheet materials
US7426062B2 (en) 2001-08-21 2008-09-16 Canon Kabushiki Kaisha Signal output apparatus, image forming apparatus and information output apparatus
US7510085B2 (en) 2002-11-14 2009-03-31 Canon Kabushiki Kaisha Apparatus for discriminating sheet material

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7426062B2 (en) 2001-08-21 2008-09-16 Canon Kabushiki Kaisha Signal output apparatus, image forming apparatus and information output apparatus
US7583413B2 (en) 2001-08-21 2009-09-01 Canon Kabushiki Kaisha Signal output and image forming apparatus with method of judging sheet type by impact detection
US7152861B2 (en) 2002-06-04 2006-12-26 Canon Kabushiki Kaisha Double feed detection method and double feed detection apparatus of sheet materials
US7296795B2 (en) 2002-06-04 2007-11-20 Canon Kabushiki Kaisha Double feed detection method and double feed detection apparatus of sheet materials
US7510085B2 (en) 2002-11-14 2009-03-31 Canon Kabushiki Kaisha Apparatus for discriminating sheet material
US7866483B2 (en) 2002-11-14 2011-01-11 Canon Kabushiki Kaisha Apparatus for discriminating sheet material
JP2004210475A (en) * 2002-12-27 2004-07-29 Canon Electronics Inc Sheet material information detecting device, sheet material handling device with the same, and signal output device

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