Patent ID: 6477339
Filing Date: 2002-11-05
Classification: G03G

Abstract:
An image forming apparatus, comprising:a transfer material bearing member for bearing a transfer material; a first image bearing member and a second image bearing member sequentially disposed along a conveying direction of the transfer material borne by said transfer material bearing member and for bearing images of different colors, respectively; first voltage applying means and second voltage applying means for applying a first voltage and a second voltage, respectively, to said transfer material bearing member so that the images on said first image bearing member and said second image bearing member are sequentially superimposed and transferred on the transfer material borne by said transfer material bearing member; detecting means for detecting a current flowing through said transfer material bearing member when a predetermined voltage is applied to an area, on which the transfer material is borne, of said transfer material bearing member before an image transfer is started; and control means for controlling said first voltage and said second voltage based on a detected result of said detecting means.