Patent ID: 6856777

Claim:
An image forming apparatus comprising: an image bearing member for bearing a toner image; a movable intermediate transferring member, wherein after a toner image on said image bearing member is temporarily transferred to said intermediate transferring member, the toner image is then transferred to a transfer material at a first transfer portion; a first charging member for charging toner on said intermediate transferring member with an applied voltage, wherein an AC voltage is superimposed on a DC voltage; and a second charging member for charging toner on said intermediate transferring member with an applied DC voltage a polarity of which is the same as a polarity of the DC voltage that is applied to said first charging member, said second charging member being located on an upstream side of said first charging member and on a downstream side of said first transfer portion with respect to a moving direction of said intermediate transferring member, wherein the toner charged by said first charging member and said second charging member is transferred from said intermediate transferring member to said image bearing member at a transfer portion between said image bearing member and said intermediate transferring member.