JPS5577771A - Fixing device of electrophotographic copier - Google Patents

Fixing device of electrophotographic copier

Info

Publication number
JPS5577771A
JPS5577771A JP15058278A JP15058278A JPS5577771A JP S5577771 A JPS5577771 A JP S5577771A JP 15058278 A JP15058278 A JP 15058278A JP 15058278 A JP15058278 A JP 15058278A JP S5577771 A JPS5577771 A JP S5577771A
Authority
JP
Japan
Prior art keywords
roller
pressure roller
temperature
rollers
fixing
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
JP15058278A
Other languages
Japanese (ja)
Other versions
JPS6120867B2 (en
Inventor
Ryoichi Namiki
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 JP15058278A priority Critical patent/JPS5577771A/en
Publication of JPS5577771A publication Critical patent/JPS5577771A/en
Publication of JPS6120867B2 publication Critical patent/JPS6120867B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Fixing For Electrophotography (AREA)

Abstract

PURPOSE: To make temperature rising of a pressure roller faster and even and achieve the prolonging of the life of both rollers by making the pressure roller and fixing rollers separatable and controlling the heating of the fixing roller through detection of the pressure roller surface temperature.
CONSTITUTION: A heater 5 is provided to a fixing roller 2 alone. A pressure roller 3 is held energized so as to space from the fixing roller 2 as shown by the chain line by the action of a spring but is held pressure contacted to the roller 2 as shown by the solid line by a lever 7 turning about a fulcrum 6. The turning force of the lever 7 is given by the electromagnetic plunger 8 provided at its free end and this plunger is connected to a power source by way of parallel connected switches 9, 10. The switch 9 is controlled by the temperature controller 13 connected to a thermistor 12 which detects the surface temperature of the roller 3 and goes ON when the temperature becomes lower than the first set value and goes OFF when it becomes hiher than the second set value. Thereby, the temperature of the pressure roller may be evened and the life of the both rollers prolonged.
COPYRIGHT: (C)1980,JPO&Japio
JP15058278A 1978-12-07 1978-12-07 Fixing device of electrophotographic copier Granted JPS5577771A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15058278A JPS5577771A (en) 1978-12-07 1978-12-07 Fixing device of electrophotographic copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15058278A JPS5577771A (en) 1978-12-07 1978-12-07 Fixing device of electrophotographic copier

Publications (2)

Publication Number Publication Date
JPS5577771A true JPS5577771A (en) 1980-06-11
JPS6120867B2 JPS6120867B2 (en) 1986-05-24

Family

ID=15500027

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15058278A Granted JPS5577771A (en) 1978-12-07 1978-12-07 Fixing device of electrophotographic copier

Country Status (1)

Country Link
JP (1) JPS5577771A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5784474A (en) * 1980-11-14 1982-05-26 Minolta Camera Co Ltd Contact heating type fixing device
JPS57205169U (en) * 1981-06-23 1982-12-27
JPS5868771A (en) * 1981-10-20 1983-04-23 Sharp Corp Heat fixing roll
JPS6139073A (en) * 1984-07-31 1986-02-25 Canon Inc Picture formation device
JPS61116376A (en) * 1985-11-15 1986-06-03 Sharp Corp Heat fixing device
JPS6446780A (en) * 1987-08-18 1989-02-21 Fuji Xerox Co Ltd Pressure roller driving device for fixing device
JPH03123378A (en) * 1989-10-06 1991-05-27 Konica Corp Heat roller fixing device
US5436430A (en) * 1993-12-06 1995-07-25 Eastman Kodak Company Roller fuser having a temperature control
US6768882B2 (en) * 2001-08-21 2004-07-27 Konica Corporation Fixing temperature control method utilizing new factors and image forming apparatus
JP2013054186A (en) * 2011-09-02 2013-03-21 Ricoh Co Ltd Cooling device and image forming apparatus using the same

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5784474A (en) * 1980-11-14 1982-05-26 Minolta Camera Co Ltd Contact heating type fixing device
JPH0136106B2 (en) * 1980-11-14 1989-07-28 Minolta Camera Kk
JPS57205169U (en) * 1981-06-23 1982-12-27
JPS5868771A (en) * 1981-10-20 1983-04-23 Sharp Corp Heat fixing roll
JPS6139073A (en) * 1984-07-31 1986-02-25 Canon Inc Picture formation device
JPS61116376A (en) * 1985-11-15 1986-06-03 Sharp Corp Heat fixing device
JPH0458032B2 (en) * 1985-11-15 1992-09-16 Sharp Kk
JPS6446780A (en) * 1987-08-18 1989-02-21 Fuji Xerox Co Ltd Pressure roller driving device for fixing device
JPH03123378A (en) * 1989-10-06 1991-05-27 Konica Corp Heat roller fixing device
US5436430A (en) * 1993-12-06 1995-07-25 Eastman Kodak Company Roller fuser having a temperature control
US6768882B2 (en) * 2001-08-21 2004-07-27 Konica Corporation Fixing temperature control method utilizing new factors and image forming apparatus
JP2013054186A (en) * 2011-09-02 2013-03-21 Ricoh Co Ltd Cooling device and image forming apparatus using the same

Also Published As

Publication number Publication date
JPS6120867B2 (en) 1986-05-24

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