JPS576846A - Controller of developing gas temperature - Google Patents

Controller of developing gas temperature

Info

Publication number
JPS576846A
JPS576846A JP8073680A JP8073680A JPS576846A JP S576846 A JPS576846 A JP S576846A JP 8073680 A JP8073680 A JP 8073680A JP 8073680 A JP8073680 A JP 8073680A JP S576846 A JPS576846 A JP S576846A
Authority
JP
Japan
Prior art keywords
temperature
detected
gas temperature
developing gas
thermistor
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
JP8073680A
Other languages
Japanese (ja)
Other versions
JPH0146867B2 (en
Inventor
Shigeru Fukuda
Toshio Shimizu
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 JP8073680A priority Critical patent/JPS576846A/en
Publication of JPS576846A publication Critical patent/JPS576846A/en
Publication of JPH0146867B2 publication Critical patent/JPH0146867B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D7/00—Gas processing apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Temperature (AREA)
  • Photographic Developing Apparatuses (AREA)

Abstract

PURPOSE:To easily ensure maintenance of developing gas temperature of a diazo copying machine or the like at a constant temperature and detection of disorder, by changing over a rate of power supply to a heater to prescribed 3 modes in accordance with a developing gas temperature detected. CONSTITUTION:Developing gas temperature is detected with a thermistor 4, compared with a low temperature reference set voltage in a comparator 6, and when the detected value is not higher than the set voltage, a transistor 7 is turned on via the comparator 6 to energize a relay RAX-1. As a result, a TRIAC2 is turned on to feed 100% AC power to a heater 1 and to raise its temperature suddenly. On rising to or above a prescribed temperature, the relay RAX-1 is degaussed and 50% AC power subjected to half-wave rectification with a diode 3 is fed to the heater 1. When temperature rise to or above the set value is detected with a thermistor 4 or detection of the temperature is made impossible by disconnection of the thermistor 4, the relay RAY-1 is likewise degaussed to stop power supply and at the same time to sound an alarm.
JP8073680A 1980-06-14 1980-06-14 Controller of developing gas temperature Granted JPS576846A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8073680A JPS576846A (en) 1980-06-14 1980-06-14 Controller of developing gas temperature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8073680A JPS576846A (en) 1980-06-14 1980-06-14 Controller of developing gas temperature

Publications (2)

Publication Number Publication Date
JPS576846A true JPS576846A (en) 1982-01-13
JPH0146867B2 JPH0146867B2 (en) 1989-10-11

Family

ID=13726666

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8073680A Granted JPS576846A (en) 1980-06-14 1980-06-14 Controller of developing gas temperature

Country Status (1)

Country Link
JP (1) JPS576846A (en)

Also Published As

Publication number Publication date
JPH0146867B2 (en) 1989-10-11

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