Image forming apparatus

An image forming apparatus, comprising:

• an image bearing member which is rotationally driven;
• a developing unit which, during an image forming period, is arranged to supply toner to the image bearing member and to form a toner image on the image bearing member;
• a transfer unit which is arranged to transfer the toner image to an intermediate transfer member or a recording medium;
• a first cleaning unit which is arranged to remove, from the image bearing member, toner remaining on a surface of the image bearing member after the toner image is transferred to the intermediate transfer member or recording medium;
• a first storage unit arranged to receive and collect toner removed by the first cleaning unit;
• a conveying unit which is arranged to be driven by transmission of a rotation of the image bearing member to convey toner stored in the first storage unit to a distinct second storage unit;
• and
• a control unit which is arranged to perform conveyance control, by driving the image bearing member to rotate during a non-image forming time period, during which time period the conveying unit is caused to convey toner from the first storage unit to the second storage unit, wherein
• the control unit being arranged to calculate an amount of toner, stored in the first storage unit, during the image forming period, and when the amount of stored toner is equal to or larger than a prescribed threshold, the control unit is arranged to execute the conveyance, during the non-image forming period, of toner from the first storage unit to the second storage unit, to reduce the amount of toner stored in the first storage unit.