JPS5723962A - Detector for copied material winding - Google Patents

Detector for copied material winding

Info

Publication number
JPS5723962A
JPS5723962A JP9830380A JP9830380A JPS5723962A JP S5723962 A JPS5723962 A JP S5723962A JP 9830380 A JP9830380 A JP 9830380A JP 9830380 A JP9830380 A JP 9830380A JP S5723962 A JPS5723962 A JP S5723962A
Authority
JP
Japan
Prior art keywords
discharge
resistor
photoreceptor
discharge current
detection
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
JP9830380A
Other languages
Japanese (ja)
Inventor
Masao Yanase
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP9830380A priority Critical patent/JPS5723962A/en
Publication of JPS5723962A publication Critical patent/JPS5723962A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/70—Detecting malfunctions relating to paper handling, e.g. jams
    • G03G15/706—Detecting missed stripping form xerographic drum, band or plate

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Controlling Sheets Or Webs (AREA)

Abstract

PURPOSE:To make jamming processing easy, by detecting the winding of copied material on a photoreceptor through the change in discharge current flowing between the photoreceptor and a high voltage discharger, for the quick detection and simplicity in the hardware. CONSTITUTION:When a switch 6 is closed, a corona discharge with a discharge resistor 7 is caused between a photoreceptor 1 and a discharger 2 making corona discharge through a DC high voltage power supply 3-1. In this case, taking a discharge current flowing through the discharge as I(muA), a voltage drop V(v)=IXR is caused across a detection resistor 4. Thus, when the voltage drop across the detection resistor 4 is a normal value or less, or a prescribed value to be set or less, a control circuit 5 is operated for the dispaly for users. As the resistor 4, an element having reverse characteristics as the temperature change of the discharge current I, that is, negative characteristics to temperature, is used so that an output voltage V at normal state is made constant, allowing quick detection and simplified device.
JP9830380A 1980-07-18 1980-07-18 Detector for copied material winding Pending JPS5723962A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9830380A JPS5723962A (en) 1980-07-18 1980-07-18 Detector for copied material winding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9830380A JPS5723962A (en) 1980-07-18 1980-07-18 Detector for copied material winding

Publications (1)

Publication Number Publication Date
JPS5723962A true JPS5723962A (en) 1982-02-08

Family

ID=14216149

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9830380A Pending JPS5723962A (en) 1980-07-18 1980-07-18 Detector for copied material winding

Country Status (1)

Country Link
JP (1) JPS5723962A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012168478A (en) * 2011-02-16 2012-09-06 Canon Inc Image forming apparatus
JP2017054055A (en) * 2015-09-11 2017-03-16 キヤノン株式会社 Image forming apparatus
US20190033771A1 (en) * 2017-07-25 2019-01-31 Konica Minolta, Inc. Image forming apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012168478A (en) * 2011-02-16 2012-09-06 Canon Inc Image forming apparatus
JP2017054055A (en) * 2015-09-11 2017-03-16 キヤノン株式会社 Image forming apparatus
US20190033771A1 (en) * 2017-07-25 2019-01-31 Konica Minolta, Inc. Image forming apparatus

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