JPS57107351A - Jam detector circuit - Google Patents

Jam detector circuit

Info

Publication number
JPS57107351A
JPS57107351A JP55183612A JP18361280A JPS57107351A JP S57107351 A JPS57107351 A JP S57107351A JP 55183612 A JP55183612 A JP 55183612A JP 18361280 A JP18361280 A JP 18361280A JP S57107351 A JPS57107351 A JP S57107351A
Authority
JP
Japan
Prior art keywords
jam
detected
pulse signal
circuit
counter
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
JP55183612A
Other languages
Japanese (ja)
Inventor
Toshiro Bando
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 JP55183612A priority Critical patent/JPS57107351A/en
Publication of JPS57107351A publication Critical patent/JPS57107351A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To simplify a circuit, by generating and counting a pulse signal synchronized with conveying speed of a conveyed material simultaneously detecting a position of the conveyed material with sensors then deciding a jam through this detected signal and the pulse signal.
CONSTITUTION: The circuit is such constituted that an encoder disc 6 and photointerruptor 7 are mechanically synchronized with a roller 3 to generate a pulse signal simultaneously conveyance of a sheet member 1 is detected by providing semsors 4, 5 and input to a counter 10 and decoder 12. Then an inverter 16 is operated by a difference of those detected signals or output signal. In this way, occurrence of a jam is detected and conveying devices 2, 3 can be controlled, then a simplified control circuit can be cnstituted by using a set of the counter 10, thus detection of the jam can be performed even though conveying speed is changed.
COPYRIGHT: (C)1982,JPO&Japio
JP55183612A 1980-12-24 1980-12-24 Jam detector circuit Pending JPS57107351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55183612A JPS57107351A (en) 1980-12-24 1980-12-24 Jam detector circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55183612A JPS57107351A (en) 1980-12-24 1980-12-24 Jam detector circuit

Publications (1)

Publication Number Publication Date
JPS57107351A true JPS57107351A (en) 1982-07-03

Family

ID=16138832

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55183612A Pending JPS57107351A (en) 1980-12-24 1980-12-24 Jam detector circuit

Country Status (1)

Country Link
JP (1) JPS57107351A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0722128A1 (en) * 1995-01-11 1996-07-17 Mita Industrial Co., Ltd. Jam detecting device for image forming apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0722128A1 (en) * 1995-01-11 1996-07-17 Mita Industrial Co., Ltd. Jam detecting device for image forming apparatus

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