Patent ID: 8428477

Claim:
An image forming apparatus, comprising: an image bearing member for bearing a latent image; a toner carrying member for supplying toner to said image bearing member to visualize the latent image; a rotatable toner supply member, contacted to said toner carrying member, for supplying the toner to the toner carrying member, said toner supply member including a surface foam layer; a voltage applying device for applying voltages to said toner carrying member and said toner supply member; a controller for controlling said voltage applying device such that A and B have a polarity which is the same as a regular charging polarity of the toner, where A=Vs 2 −Vd 2, B =( Vs 2 −Vd 2)−( Vs 1 −Vd 1), Vd1 is a voltage applied to said toner carrying member by said voltage applying device during a period in which the latent image is visualized, Vs1 is a voltage applied to said toner supplying member during the period, vd2 is a voltage applied to said toner carrying member by said voltage applying device during at least a part of a period which is after application of the voltage Vd1 and before stoppage of rotation of said toner supplying member, and Vs2 is a voltage applied to said toner supplying member during said at least the part of the period.