JPS5577771A - Fixing device of electrophotographic copier - Google Patents
Fixing device of electrophotographic copierInfo
- 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
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
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)
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 |
-
1978
- 1978-12-07 JP JP15058278A patent/JPS5577771A/en active Granted
Cited By (12)
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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