JPS5657151A - Diagnostic device - Google Patents

Diagnostic device

Info

Publication number
JPS5657151A
JPS5657151A JP13207579A JP13207579A JPS5657151A JP S5657151 A JPS5657151 A JP S5657151A JP 13207579 A JP13207579 A JP 13207579A JP 13207579 A JP13207579 A JP 13207579A JP S5657151 A JPS5657151 A JP S5657151A
Authority
JP
Japan
Prior art keywords
different timing
computer
output values
diagnosed
led
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.)
Granted
Application number
JP13207579A
Other languages
Japanese (ja)
Other versions
JPH0330140B2 (en
Inventor
Sunao Nagashima
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 JP13207579A priority Critical patent/JPS5657151A/en
Priority to DE3038367A priority patent/DE3038367C2/en
Priority to GB8032949A priority patent/GB2061558B/en
Publication of JPS5657151A publication Critical patent/JPS5657151A/en
Priority to GB08319606A priority patent/GB2131202B/en
Priority to US07/412,433 priority patent/US5043765A/en
Publication of JPH0330140B2 publication Critical patent/JPH0330140B2/ja
Priority to US08/035,885 priority patent/US5357319A/en
Granted legal-status Critical Current

Links

Landscapes

  • Control Or Security For Electrophotography (AREA)
  • Debugging And Monitoring (AREA)

Abstract

PURPOSE:To inspect the measure potential to make fault diagnosis possible, by designating respective output values by a change-over switch to display the output value by an LED in case that the control state of the computer which processes plural signals generated at different timing is diagnosed. CONSTITUTION:The output of potentiometer 67 is converted to a digital value by the A/D converter incorporated in the digital computer, and output values of the A/D converter at different timing are stored in the computer. Respective output values are designated by a changeover switch, and the output value is displayed digitally on a basis of designation by the LED. As a result the measure potential can be inspected easily without external measuring devices for voltage calculation and so on only by switching the switch as a designating means. Further, since potentials generated at different timing can be inspected easily, the fault of the device equipped with the potential detector can be diagnosed.
JP13207579A 1979-10-13 1979-10-13 Diagnostic device Granted JPS5657151A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP13207579A JPS5657151A (en) 1979-10-13 1979-10-13 Diagnostic device
DE3038367A DE3038367C2 (en) 1979-10-13 1980-10-10 Electrophotographic device
GB8032949A GB2061558B (en) 1979-10-13 1980-10-13 Digital computer display
GB08319606A GB2131202B (en) 1979-10-13 1983-07-20 Electrophotographic copier
US07/412,433 US5043765A (en) 1979-10-13 1989-09-25 Image forming apparatus including control means responsive to image forming conditions
US08/035,885 US5357319A (en) 1979-10-13 1993-03-23 Image forming apparatus having image quality control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13207579A JPS5657151A (en) 1979-10-13 1979-10-13 Diagnostic device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP61243681A Division JPS62229164A (en) 1986-10-13 1986-10-13 Image forming device

Publications (2)

Publication Number Publication Date
JPS5657151A true JPS5657151A (en) 1981-05-19
JPH0330140B2 JPH0330140B2 (en) 1991-04-26

Family

ID=15072920

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13207579A Granted JPS5657151A (en) 1979-10-13 1979-10-13 Diagnostic device

Country Status (1)

Country Link
JP (1) JPS5657151A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010156555A (en) * 2008-12-26 2010-07-15 Canon Inc Surface potential measuring device and image forming apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4997626A (en) * 1972-12-05 1974-09-14
JPS52142518A (en) * 1976-05-22 1977-11-28 Ricoh Co Ltd Data indicator for copying machine
JPS5467439A (en) * 1977-10-27 1979-05-30 Ibm Circulatory operating device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4997626A (en) * 1972-12-05 1974-09-14
JPS52142518A (en) * 1976-05-22 1977-11-28 Ricoh Co Ltd Data indicator for copying machine
JPS5467439A (en) * 1977-10-27 1979-05-30 Ibm Circulatory operating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010156555A (en) * 2008-12-26 2010-07-15 Canon Inc Surface potential measuring device and image forming apparatus

Also Published As

Publication number Publication date
JPH0330140B2 (en) 1991-04-26

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