JPS6484271A - Method for controlling temperature of fixing device - Google Patents
Method for controlling temperature of fixing deviceInfo
- Publication number
- JPS6484271A JPS6484271A JP24326787A JP24326787A JPS6484271A JP S6484271 A JPS6484271 A JP S6484271A JP 24326787 A JP24326787 A JP 24326787A JP 24326787 A JP24326787 A JP 24326787A JP S6484271 A JPS6484271 A JP S6484271A
- Authority
- JP
- Japan
- Prior art keywords
- heating
- temperature
- preset temperature
- copying operation
- prevent
- 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
Links
Landscapes
- Fixing For Electrophotography (AREA)
- Control Of Temperature (AREA)
Abstract
PURPOSE:To prevent low temperature offset from being generated by adjusting a heating preset temperature at a waiting time after completing a warm-up operation by estimating the steep drop of a temperature at a part not being heated by alternate conduction immediately after starting a copying operation. CONSTITUTION:At least either the heating preset temperature set by a first heating means 26 which heats mainly the center part in an axial direction of the upper fixing roller 1 of a pair f fixing rollers 1 and 2 or the heating preset temperature set by a second heating means 31 which heats mainly both end parts in the axial direction is set higher than that set by both heating means 26 and 31 in the copying operation. And after heating by respective heating preset temperature, the temperature is switched to the heating preset temperature in the copying operation by a signal to start the copying operation. In such a way, it is possible to prevent picture quality from being lowered due to the generation of nonuniformity in the glossiness of an image to be fixed and to prevent the low temperature offset at a low temperature part from being generated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24326787A JPS6484271A (en) | 1987-09-28 | 1987-09-28 | Method for controlling temperature of fixing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24326787A JPS6484271A (en) | 1987-09-28 | 1987-09-28 | Method for controlling temperature of fixing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6484271A true JPS6484271A (en) | 1989-03-29 |
Family
ID=17101324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24326787A Pending JPS6484271A (en) | 1987-09-28 | 1987-09-28 | Method for controlling temperature of fixing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6484271A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0751442A2 (en) * | 1995-06-30 | 1997-01-02 | Canon Kabushiki Kaisha | Image heating apparatus |
EP0811893A1 (en) * | 1996-06-04 | 1997-12-10 | Canon Kabushiki Kaisha | Fixing unit control apparatus |
JP2011099937A (en) * | 2009-11-04 | 2011-05-19 | Konica Minolta Business Technologies Inc | Image forming apparatus |
-
1987
- 1987-09-28 JP JP24326787A patent/JPS6484271A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0751442A2 (en) * | 1995-06-30 | 1997-01-02 | Canon Kabushiki Kaisha | Image heating apparatus |
EP0751442A3 (en) * | 1995-06-30 | 2000-01-26 | Canon Kabushiki Kaisha | Image heating apparatus |
EP0811893A1 (en) * | 1996-06-04 | 1997-12-10 | Canon Kabushiki Kaisha | Fixing unit control apparatus |
JP2011099937A (en) * | 2009-11-04 | 2011-05-19 | Konica Minolta Business Technologies Inc | Image forming apparatus |
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