| 摘要 |
An image forming apparatus includes a non-contact temperature sensor that commences measuring temperature of a heating member in a fixing device once a waiting period of a certain length has passed after power supply commences to the fixing device, and acquires information indicating a heating condition of the heating member when the fixing device transitions to a non-power supplied state. Once the waiting period has passed, the apparatus controls to increase the heating member temperature to a target temperature, while monitoring the heating member temperature using the non-contact temperature sensor. During the waiting period, the apparatus estimates the heating member temperature at a present time using the information, and controls to increase the heating member temperature when the estimated temperature does not exceed a threshold temperature, and prevent increase of the heating member temperature when the estimated temperature exceeds the threshold temperature.
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