| 摘要 |
<p>An image forming apparatus includes a fixing device, a temperature sensor and a controller. The fixing device includes a heat source, a heat member heated by the heat source, and a back-up member. The temperature sensor detects a temperature of the heat member. The controller controls the heat source and includes an output determination unit determining an output at which the heat source is operated to generate a target temperature; a first setting unit setting a first target temperature; a second setting unit setting a second target temperature lower than the first target temperature; a switching unit switching the target temperature from the first target temperature to the second target temperature; a determination unit determining whether a recording sheet is conveyed; and a supplemental output control unit generating a supplemental output greater than the output if the recording sheet is conveyed when the target temperature is switched.</p> |
