A counter blade cleaning system is used for drum cleaning. A cleaning blade [B] removes toner on the drum by always contacting the drum against the drum rotation. Toner scraped off by the blade is transferred by the toner collection coil [A] from the front to the rear, to be discarded into the waste toner bottle via the transportation route [C] to the rear of the drum. Depending on the job conditions, used toner may be discarded by the toner recycle/discard switch mechanism. Paper dust that adheres to the edge of the cleaning blade is removed by rotating the drum [D] in reverse after job end.