| 摘要 |
In a multiple-color image forming apparatus a voltage which is applied to the intermediate transfer member by the voltage applying device is constant-voltage-controlled, wherein there is a period when the image bearing member which is charged by the charger and on which no toner image is formed by the image forming device and the toner image which is transferred onto the intermediate transfer member exist at the transfer position, a detecting device for detecting a current that flows in the intermediate transfer member from the voltage applying device when the voltage is applied to the intermediate transfer member by the voltage applying device during the period, and a controller for controlling at least one of the voltage which is applied to the image bearing member by the charger and a voltage which is applied to the intermediate transfer member by the voltage applying device on the basis of a detection result by the detecting device.
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