Patent ID: 6308019
Filing Date: 2001-10-23
Classification: G03G

Abstract:
An image forming apparatus comprising:an intermediate transfer member;image forming means for forming a toner image on said intermediate transfer member;charging means for charging residual toner remaining on said intermediate transfer member after the toner image formed by said image forming means on said intermediate transfer member is electrostatically transferred onto a transfer material, wherein the residual toner charged by said charging means on said intermediate transfer member is electrostatically transferred onto said image forming means, and wherein, after the toner image is transferred from said intermediate transfer member to a first side of the transfer material, a toner image can be transferred from said intermediate transfer member to a second side of the transfer material opposite to the first side; andcontrol means for controlling voltage to be applied to said charging means in dependence upon whether a time after the toner image is transferred from said intermediate transfer member to the first side of the transfer material or a time after the toner image is transferred from said intermediate transfer member to the second side of the transfer material.