Cleaning device, developing device, cartridge, cleaning blade securing method, and developing blade securing method

A cleaning device comprising:

• 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 said cleaning blade;
• a mounting hole provided in one of said cleaning blade and said supporting member;
• a projection which is provided on the other of said cleaning blade and said supporting member and which is inserted in said mounting hole;
• and
• a recess provided in said projection and extended from a free end portion of said projection toward a base portion of said projection,
• wherein said cleaning blade and said supporting member are secured to each other by deformation of said projection by resin material in said recess such that said recess expands outwardly of said mounting hole, and said resin material covers an outer periphery of said projection.