| 摘要 |
An image forming apparatus (1) includes an transfer section (30) including a transfer roller (32) and a rotatable member (31) and performing transfer processing in which it transfers a developer to a recording medium; a power source controller (56) that applies a voltage to the transfer roller and measures a current value of a current that flows through the transfer roller and the rotatable member; and a main controller (50) that calculates a first electrical resistance value between the transfer roller and the rotatable member in if the recording medium is absent between the transfer roller and the rotatable member and a second electrical resistance value between the transfer roller and the rotatable member if the recording medium is present between the transfer roller and the rotatable member on the basis of the current value measured by the power source controller, and determines a transfer voltage value for the transfer processing. |
