A cleaning device includes a cleaning blade for removing toner remaining on a surface of an image bearing member for carrying a toner image; a supporting member for supporting the cleaning blade; a mounting hole provided in one of the cleaning blade and the supporting member; a projection which is provided on the other of the cleaning blade and the supporting member and which is inserted in the mounting hole; and a recess provided in the projection and extended from a free end portion of the projection toward a base portion of the projection, wherein the cleaning blade and the supporting member are secured to each other by the projection deformed such that the recess expands outwardly of the mounting hole by resin material in the recess.
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