JPS57161758A - Safety device - Google Patents

Safety device

Info

Publication number
JPS57161758A
JPS57161758A JP56046642A JP4664281A JPS57161758A JP S57161758 A JPS57161758 A JP S57161758A JP 56046642 A JP56046642 A JP 56046642A JP 4664281 A JP4664281 A JP 4664281A JP S57161758 A JPS57161758 A JP S57161758A
Authority
JP
Japan
Prior art keywords
temperature
output
drum
circuit
signal
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
JP56046642A
Other languages
Japanese (ja)
Inventor
Hidemi Egami
Toshiaki Yagasaki
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 JP56046642A priority Critical patent/JPS57161758A/en
Publication of JPS57161758A publication Critical patent/JPS57161758A/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
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/20—Humidity or temperature control also ozone evacuation; Internal apparatus environment control

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Atmospheric Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To know the conditions of a temperature-detected member itself and its circumference while exercising secure temperature control over the temperature-detected member without using light, by controlling the temperature of the member by the signal of a temperature detecting means and then storing an output obtained by comparing said signal with a reference potential. CONSTITUTION:A temperature sensor 9 detects the temperature of a photosensitive drum or its corresponding temperature and its output is inputted to a temperature control means 11 to hold the drum at set temperature. The output of the sensor 9, on the other hand, is inputted to a comparing circuit 12, which compares the input signal with a reference potential 10 equivalent to the abnormal temperature of the drum to send its output to a storage circuit 13 and an arithmeic circuit 14. The arithmetic circuit 14 connects with a microcomputer 15 to detect the abnormal conditions of the drum itself and its circumference, e.g., a jam, thereby performing control over jam display, process stopping, etc.
JP56046642A 1981-03-30 1981-03-30 Safety device Pending JPS57161758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56046642A JPS57161758A (en) 1981-03-30 1981-03-30 Safety device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56046642A JPS57161758A (en) 1981-03-30 1981-03-30 Safety device

Publications (1)

Publication Number Publication Date
JPS57161758A true JPS57161758A (en) 1982-10-05

Family

ID=12752957

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56046642A Pending JPS57161758A (en) 1981-03-30 1981-03-30 Safety device

Country Status (1)

Country Link
JP (1) JPS57161758A (en)

Similar Documents

Publication Publication Date Title
JPS5743596A (en) Drive control device for pulse motor
JPS57161758A (en) Safety device
ES495038A0 (en) A METHOD AND A DETECTION DEVICE FOR OPAQUE MEMBERS WHICH ARE FOUND WITHIN A DETECTION SPACE.
JPS57161757A (en) Safety device
JPS57161754A (en) Safety device using temperature detecting means
JPS5557856A (en) Copying apparatus
JPS5766311A (en) Automatic testing device
JPS5728275A (en) Automatic ri monitor system having self-diagnostic function
JPS5768559A (en) Apparatus for inspecting and preventing knocking
JPS57193842A (en) Request conflict detecting system
JPS5458228A (en) Combustion monitor of furnace
JPS57109968A (en) Method for detecting transfer material using temperature sensor
JPS54101072A (en) False operation detector of servo-device
JPS5755453A (en) Timer device
JPS5553352A (en) Image forming device
JPS54129643A (en) Industrial robot controller
JPS5492329A (en) Free running control method of copying machine
JPS5552155A (en) Check system of arithmetic logical operation unit
SU1267610A2 (en) Device for checking counter serviceability
JPS53131374A (en) Abnormality detecting apparatus of automatic control apparatus
JPS57144578A (en) Electrophotographic copier
JPS6434833A (en) Image forming device
JPS56132607A (en) Fault detector
JPS56151271A (en) Safety device for avoiding knocking
JPS5644906A (en) Control anomaly detecting device