Patent ID: 6404998
Filing Date: 2002-06-11
Classification: G03G

Abstract:
An image forming apparatus comprising:an image bearing body for bearing a toner image; a transferring member for forming a nip with said image bearing body to pinch a transferring material and for transferring the toner image on said image bearing body to the transferring material; voltage applying means for applying a transfer voltage to said transferring member; voltage detecting means for detecting an applied voltage at which a predetermined current flows through said transferring member before a transferring operation; current detecting means for detecting a current flowing when a voltage based on a detected voltage of said voltage detecting means is applied to said transferring member in a condition where a tip end of the transferring material is present at the nip; and voltage determining means for determining the transfer voltage after the tip end of the transferring material, based on a detected current of said current detecting means.