| 摘要 |
An image forming apparatus includes a fixing unit (110) having a fixing roller and a heating roller to fix a toner image on a printing medium and a heater to heat the heating roller, a power supply (120) to supply power to the heater included in the fixing unit (110) along a power supply line, a first switch (130) operable to selectively supply the power from the power supply (120) to the heater, a main controller (150) arranged to control an operation of the first switch (130) to maintain a temperature of the fixing unit (110) within a predetermined fixing temperature range, a second switch (170) operable to open the power supply line between the power supply (120) and the heater, and an auxiliary controller (180) arranged to control an operation of the second switch (170) to open the power supply line if the temperature of the fixing unit (110) is outside the predetermined fixing temperature range. |
