An image forming apparatus includes an image bearing member for bearing a toner image; a transfer device for transferring the toner image onto a sheet from the image bearing member; a fixing device for fixing on the sheet the toner image which has been transferred onto the sheet; a cleaning member arranged on a side of the transfer device with respect to the sheet to be transported from the transfer device to the fixing device, for removing a toner stain adhering to the sheet; a biasing device for biasing the sheet against a side of the cleaning member; and a controller for regulating a biasing force of the biasing device according to a type of the sheet.