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US 2007/0166062 A1Published application
Fixing device and fixing method
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorKoji Shimokawa
Life of this patent
Estimating the term…
Abstract
A fixing device includes a first heater provided at a central part of a roller body in a longitudinal direction thereof and a second heater provided at the end of the roller body in the longitudinal direction thereof. A single thermostat is provided at a position where the difference between the first temperature when only the first heater lights and the second temperature when only the second heater lights is set within a predetermined range.
Claims20
A fixing device comprising:
- a roller body;
- a first heater provided at a central part of the roller body in a longitudinal direction;
- a second heater provided at an end of the roller body in the longitudinal direction;
- and
- a single thermostat provided at a position where a difference between a first temperature when only the first heater acts and a second temperature when only the second heater acts is set within a predetermined range.
2 more elements
A fixing device comprising:
- first heating means for heating a central part of a roller body in a longitudinal direction;
- second heating means for heating an end of the roller body in the longitudinal direction;
- and
- interruption means, installed at a position where a difference between a first temperature when only the first heating means heats and a second temperature when only the second heating means heats is set within a predetermined range, for interrupting a power supply to each of the first and second heating means.
1 more element
A fixing method comprising:
- heating a central part of a roller body in a longitudinal direction;
- heating an end of the roller body in the longitudinal direction;
- and
- interrupting heating of the central part and the end of the roller body by a single power supply interruption member provided at a position where a difference between a first temperature when the central part is heated and a second temperature when the end is heated is set within a predetermined range when the heating temperature of the roller body exceeds a predetermined temperature.
1 more element
Dependencies are inferred from the claim text.