Patent ID: 6654570
Filing Date: 2003-11-25
Classification: G03G

Abstract:
An image forming apparatus comprising:an image bearing member; a transferring member for transferring a toner image from said image bearing member onto a recording material at a transfer portion; voltage applying means for applying a voltage to said transferring member, wherein said voltage applying means is capable of applying to the transferring member a first voltage, a second voltage higher than the first voltage and a third voltage higher than the second voltage, wherein said voltage applying means applies the first voltage to the transferring member, then the second voltage prior to the recording material reaching the transfer portion, and then the third voltage after the recording material reaching the transfer portion, and current detecting means for detecting a current flowing through said transferring member when said voltage applying means applies the voltage to said transferring member, wherein the first voltage is substantially equal to the voltage applied to said transferring member at the time when a current detected by said current detecting means is a predetermined value, and the second voltage and the third voltage are set on the basis of the first voltage.