| 摘要 |
According to one embodiment, an image forming apparatus includes a characteristic acquiring unit configured to acquire a characteristic of the medium, a fixing device including a heating member configured to heat the front surface of the medium and a pressing member configured to heat a rear surface of the medium, and a control unit configured to turn off, when the thickness or the basis weight of the medium is determined to be equal to or smaller than a predetermined value based on an acquired characteristic of the medium, heating power for the pressing member at start of a fixing operation by the fixing device and control the temperature of the pressing member during the fixing operation to the temperature between a second threshold temperature which is temperature lower than a temperature during standby of the fixing operation, and a first threshold temperature lower than the second threshold temperature.
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