Image forming apparatus having transfer member bias control

An image forming apparatus comprising:

• an image bearing member;
• a toner image forming unit that forms a toner image on the image bearing member;
• a transfer member that forms a transfer portion, the transfer portion transferring the toner image from the image bearing member to a recording material;
• a control unit that performs constant current control in a transfer process such that an amount of current passing through the transfer member becomes a previously set target current value in a voltage range, a lower limit voltage that becomes a lower limit of an absolute value of a voltage applied to the transfer member being set in the voltage range;
• and
• a setting portion that sets the lower limit voltage based on a value obtained by adding a first voltage value and a second voltage value, the first voltage value being set by applying a voltage to the transfer member in a state in which the recording material does not exist at the transfer member, the second voltage value being set according to the recording material.