| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent high-temperature offset caused by a deviation in temperature change between the surface temperature of a fixing roller center part and a detection temperature by a thermistor when a fixing device is made in a fixing processing state from a standby state, as for the fixing device incorporating a main heater and a sub heater, and provided with the thermistor arranged in a non-paper passing area. <P>SOLUTION: When the fixing device is made in the fixing processing state where the fixing processing is performed by using only the center part of a fixing roller 61 from the standby state where the temperature of the fixing roller 61 is made lower than a fixation temperature, an operation of supplying the power to a main heater H<SB>1</SB>and an operation of stopping the power supply are alternatively repeated, irrespective of the detection temperature, until the detection temperature by the thermistor reaches a 2nd set temperature. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
