on a photoreceptor includes a developing device configured to accommodate a two component developer including toner and carrier and to develop the electrostatic latent image with the developer toner which has been used for developing the electrostatic latent image is recycled to the developing device so as to be used again the developing device includes a developer conveying path so as to convey the recycled toner therethrough a screening member having openings to screen the recycled toner is arranged in the developer conveying path application_number US 61476300 A description referring now to the drawings wherein like reference numerals designate identical or corresponding parts throughout the several views embodiments of the present invention are now described fig1 is a schematic view illustrating a construction of an electrophotographic apparatus according to a first embodiment of the present invention in the electrophotographic apparatus of fig1 a cylindrically shaped photoreceptor 1 as an image bearing member is supported so as to rotate in the direction indicated by an arrow arranged around the photoreceptor 1 are a charging roller 2 an exposing device 3 a developing device 4 a transfer belt 6 a cleaning blade 7 a rotary blade 8 and a toner returning coil 9 the above described elements except the transfer belt 6 are housed in a photoreceptor cleaning unit 10 hereinafter referred to as a pcu the developing device 4 is housed in a case having an opening at the opening a developing sleeve.