JPS55156967A - Jam detector of copying machine - Google Patents

Jam detector of copying machine

Info

Publication number
JPS55156967A
JPS55156967A JP6401479A JP6401479A JPS55156967A JP S55156967 A JPS55156967 A JP S55156967A JP 6401479 A JP6401479 A JP 6401479A JP 6401479 A JP6401479 A JP 6401479A JP S55156967 A JPS55156967 A JP S55156967A
Authority
JP
Japan
Prior art keywords
circuit
timer
jam
paper
time
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
JP6401479A
Other languages
Japanese (ja)
Inventor
Minoru Iwamoto
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 JP6401479A priority Critical patent/JPS55156967A/en
Publication of JPS55156967A publication Critical patent/JPS55156967A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To enable the detection of jam at high-speed copying by so connecting and providing plural sets of timer means according to the sheet number of paper existing in the conveying path as to be subsidiary driven sequentially.
CONSTITUTION: The 1st timer means 9 is formed by an FF circuit 10 and timer circuit 11. The paper signal (a) is supplied as set input to the FF circuit 10. The 2nd timer means 12 is formed by an FF circuit 13 and timer circuit 14 and the output of the timer circuit 11 is supplied as set input to the FF circuit 13 and the detection signal (b) from a paper detecting means 8 as reset input. The set timer time of the timer circuit 14 is set longer than the time required for normal conveying of paper. When jam occurs in such a state, the detection signal fails to be generated even after lapse of the specified time and therefore the FF circuit 13 is not reset. Hence, the jam signal J is generated from the timer circuit 14 upon its timing-out of the set time. In this way, the jam may be detected.
COPYRIGHT: (C)1980,JPO&Japio
JP6401479A 1979-05-25 1979-05-25 Jam detector of copying machine Pending JPS55156967A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6401479A JPS55156967A (en) 1979-05-25 1979-05-25 Jam detector of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6401479A JPS55156967A (en) 1979-05-25 1979-05-25 Jam detector of copying machine

Publications (1)

Publication Number Publication Date
JPS55156967A true JPS55156967A (en) 1980-12-06

Family

ID=13245885

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6401479A Pending JPS55156967A (en) 1979-05-25 1979-05-25 Jam detector of copying machine

Country Status (1)

Country Link
JP (1) JPS55156967A (en)

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