Abstract: A cleaning device wherein a cleaner container is provided with an opening, opposing an image bearing drum, for permitting a developer removed from the drum by a cleaning member to enter the container. The cleaning member is fixed at a downstream side of the opening with respect to a rotational moving direction of the drum. The container is provided with a fixing surface for a flexible sheet at an upstream side of the opening with respect to the direction. The sheet is fixed to the fixing surface at an end portion thereof opposite an end portion thereof where the sheet contacts the drum, and at an end portion of the fixing surface with respect to a drum axis direction, the fixing surface protrudes toward a upstream side with respect to a rotational moving direction of the drum beyond a central portion of the fixing surface.