Provided is a cleaning device having a compact structure.A recovery unit (17) is configured such that dust collection boxes (76, 77) are disposed with respect to a cleaning brush (6) and a metallic roller (7), respectively. A cleaning blade (9) is fixed to a blade holder (79) via a bolt (78). When the recovery unit (17) is incorporated in a frame unit, the recovery unit (17) is moved in a predetermined direction so as to be brought into contact with a positioning section (14Bbb) of a side plate 14B of the frame unit (11). When the recovery unit (17) is moved, a fixing bolt (85) is loosened so that a straight portion (86a) of a fixed washer (86) is aligned with the vertical direction, and then, the fixing bolt (85) is tightened so that the recovery unit is fixed. On the other hand, when the recovery unit (17) is fixed, the fixing bolt (85) is loosened so that the straight portion of the fixed washer (86) is aligned with the horizontal direction, and then, the fixing bolt is tightened so that the recovery unit is fixed.