Patent ID: 8532514

Claim:
An image forming apparatus comprising: a first image bearing member; a transfer member for transferring a toner image from said first image bearing member onto a second image bearing member at a transfer portion; a control portion for controlling a voltage to be applied to said transfer member; and a current detecting portion for detecting a value of a current passing through the transfer portion, wherein during execution of a continuous image forming mode in which images are continuously formed on the second image bearing member, said control portion applies a first voltage value to said transfer member at a first interval between images and applies a second voltage value different from the first voltage value at a second interval between images that is different from the first interval between images, and said control portion selects a transfer voltage value to be applied to said transfer member, the transfer voltage value being a voltage value, selected from the first voltage value and the second voltage value, at which a detected current value is closest to a target current value, and wherein the transfer voltage value is a voltage value when the toner image is transferred from said first image bearing member onto the second image bearing member.