Patent ID: 7486900

Claim:
An image forming apparatus comprising: an image bearing member for bearing a toner image; toner image forming means for forming the toner image on said image bearing member, the toner image forming means being capable of forming an adjustment toner image, which is not transferred onto a recording medium, on the image bearing member during non-image forming period; a transfer member, provided in contact with said image bearing member, for electrostatically transferring the toner image on said image bearing member onto a recording medium; a detecting member for detecting said adjustment toner image; a controller for adjusting toner image forming conditions of said toner image forming means on the basis of an output by said detecting member; and a cleaning member, provided in contact with said transfer member, for removing toner on said transfer member, said cleaning member executing a discharge mode for electrostatically discharging the removed toner to said image bearing member via said transfer member at a predetermined timing, wherein an amount of toner of the formed adjustment toner image is summed, and the predetermined timing is changed based on the summed toner amount.