JPS56101173A - Heat control system - Google Patents

Heat control system

Info

Publication number
JPS56101173A
JPS56101173A JP385980A JP385980A JPS56101173A JP S56101173 A JPS56101173 A JP S56101173A JP 385980 A JP385980 A JP 385980A JP 385980 A JP385980 A JP 385980A JP S56101173 A JPS56101173 A JP S56101173A
Authority
JP
Japan
Prior art keywords
controlled
power source
switch
control circuit
heat
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
JP385980A
Other languages
Japanese (ja)
Inventor
Mitsuo Shibusawa
Toshiyuki Ogawa
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 JP385980A priority Critical patent/JPS56101173A/en
Publication of JPS56101173A publication Critical patent/JPS56101173A/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
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)
  • Control Of Temperature (AREA)

Abstract

PURPOSE:To make possible simple selection of the modes desired by users and improve operating performance by controlling a heat fixing device to a fixable predetermined set temp. irrespective of a preheating switch while a power source switch is ON. CONSTITUTION:When a preheating switch 15 is turned ON while a power source switch 17 is OFF, a heat control circuit 16 is supplied with power source, and compares the signal from a heat sensitive element 8 with the 2nd reference signal, by the output signal whereof a switching element 7 is controlled to make ON-OFF controlling of a heater 6, so that the heat fixing device is controlled to the 2nd set temp. While the preheating switch 15 and the power source switch 17 are OFF, the heater 6 does not go ON. Here, when the power source switch 17 goes ON, power is supplied to a main sub-control circuit 20, and the controlled circuit 21, by which a relay 22 is turned ON and its contacts 23 are closed, so that the heat control circuit 16 operates irrespective of the ON and OFF of the preheating switch 15. In this case, the heat control circuit 16 compares the signal from the element 8 with the 1st reference value, by the output signal whereof the switching element 7 is controlled so that the heat fixing device is controlled to the 1st set temp.
JP385980A 1980-01-17 1980-01-17 Heat control system Pending JPS56101173A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP385980A JPS56101173A (en) 1980-01-17 1980-01-17 Heat control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP385980A JPS56101173A (en) 1980-01-17 1980-01-17 Heat control system

Publications (1)

Publication Number Publication Date
JPS56101173A true JPS56101173A (en) 1981-08-13

Family

ID=11568908

Family Applications (1)

Application Number Title Priority Date Filing Date
JP385980A Pending JPS56101173A (en) 1980-01-17 1980-01-17 Heat control system

Country Status (1)

Country Link
JP (1) JPS56101173A (en)

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