A cleaning device comprises: a first conveying member (17) disposed further upstream in the rotating direction of a photoconductor drum (3) than a cleaning blade (16), and constructed to rotate in non-contacting relationship to the photoconductor drum (3) to convey residual toner that was removed by the cleaning blade (16); a second conveying member (18) disposed parallel to the first conveying member (17) and constructed to rotate in non-contacting relationship to the first conveying member (17); a first bias power supply (19) for applying to the first conveying member a bias voltage having a polarity opposite to the proper polarity of the developer applied for development; and a second bias power supply (20) for applying to the second conveying member (18) a bias voltage having the same polarity as the proper polarity. <IMAGE>
