A toner supplying apparatus for feeding a toner to a developing device to develop a latent image on an image bearing member. The apparatus includes: a toner separating member communicating to the developing device, to separate the toner from the mixed fluid containing the toner and an air stream; a separating side flow control mechanism disposed between the toner separating member and the developing device; a wall to cover at least a portion of the flow control mechanism, having a clearance therebetween; and an after-separation storage to store the toner separated from the mixed fluid.