JPS57185450A - Picture forming device - Google Patents

Picture forming device

Info

Publication number
JPS57185450A
JPS57185450A JP56070348A JP7034881A JPS57185450A JP S57185450 A JPS57185450 A JP S57185450A JP 56070348 A JP56070348 A JP 56070348A JP 7034881 A JP7034881 A JP 7034881A JP S57185450 A JPS57185450 A JP S57185450A
Authority
JP
Japan
Prior art keywords
selection switch
indicator
execution value
analog
detect
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
JP56070348A
Other languages
Japanese (ja)
Inventor
Mitsuru Obata
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 JP56070348A priority Critical patent/JPS57185450A/en
Publication of JPS57185450A publication Critical patent/JPS57185450A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/55Self-diagnostics; Malfunction or lifetime display

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To detect a defective processing device in a simple and quick way and then to perform the repair and inspection with high efficiency, by using a detector which detects the present process execution value in the form of an analog value and an analog indicator which receives the output from each detector via a selection switch. CONSTITUTION:The detectors CVT1-CVT5 detect the execution value of each of a series processes for charging, exposure, development, transcription and fixing respectively. At the same time, the outputs given from those detectors are switched to 121-125 via a selection switch 12 and displayed at an analog indicator 13. When the nondefective or defective state is detected for each of the above-mentioned process devices, the catch 128 of the selection switch 12 is switched successively. Then whether are present process execution value indicated by the indicator 13 with each switching is within a proper control range is confirmed. In such way, the simple and quick discrimination is possible.
JP56070348A 1981-05-11 1981-05-11 Picture forming device Pending JPS57185450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56070348A JPS57185450A (en) 1981-05-11 1981-05-11 Picture forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56070348A JPS57185450A (en) 1981-05-11 1981-05-11 Picture forming device

Publications (1)

Publication Number Publication Date
JPS57185450A true JPS57185450A (en) 1982-11-15

Family

ID=13428827

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56070348A Pending JPS57185450A (en) 1981-05-11 1981-05-11 Picture forming device

Country Status (1)

Country Link
JP (1) JPS57185450A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2618575A1 (en) * 1987-07-22 1989-01-27 Toshiba Kk ELECTROPHOTOGRAPHY IMAGE FORMING APPARATUS WITH ANOMALY DETECTION DEVICE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2618575A1 (en) * 1987-07-22 1989-01-27 Toshiba Kk ELECTROPHOTOGRAPHY IMAGE FORMING APPARATUS WITH ANOMALY DETECTION DEVICE

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