An image forming apparatus including an image bearing member to bear a latent electrostatic image, an irradiation device and developing device to develop a toner latent electrostatic image on the image bearing member, a cleaning blade to remove toner particles remaining on the image bearing member, and a transfer device to transfer the toner image formed on the image bearing member to a recording material. The image forming apparatus satisfies relationships (1) and (2): (1) 0.10< or =Dm.sup.3/V< or =3.41, wherein Dm represents a weight average particle diameter of the toner and V represents a circumference velocity of the image bearing member; and (2) T.sub.ave< or =1.40 kgfcm, wherein T.sub.ave represents the average of a torque T of the image bearing member when the torque is measured for 15 seconds while the cleaning blade is in contact with the image bearing member.