Movable member and image forming apparatus

A movable unit attached to an apparatus body of an image forming apparatus and movable with respect to the apparatus body, and to which a cartridge is detachably mounted, the movable unit comprising:

• a frame;
• a mounting portion provided in the frame and to which the cartridge is detachably mounted;
• a rotatable photosensitive drum rotatable about a rotational axis;
• a charging wire configured to electrically charge a surface of the photosensitive drum, the charging wire extending along a rotational axis of a rotation shaft of the photosensitive drum;
• and
• a cleaning member configured to clean the charging wire by contacting the charging wire and being movable between a first position and a second position with respect to a direction of the rotational axis, wherein in a state the cartridge is mounted to the mounting portion, the cleaning member is positioned at the first position and the cleaning member is restricted by the cartridge from being moved from the first position toward the second position,
• wherein the cleaning member comprises:
• a base portion;
• and
• a plurality of projected portions projected upward from the base portion when the movable unit has an attitude in which the movable unit is attached to the apparatus main body, the plurality of projected portions including a first projected portion projected most upward from the base portion among the plurality of projected portions,
• wherein an entirety of the first projected portion is disposed in an region of the base portion on a side of the first position with respect to a center position of the base portion in the direction of the rotational axis.