A handbag, a system and a method interchange storage containers which hold personal items andor professional items. A shaft end of the hollow shaft is deformed radially outward and caulked to an outer end face of an inner ring of the bearing. A non-amorphizing implantation implants dopants of the same conductivity type into the semiconductor body. The conveyor belts are an improvement over the prior art in that they prevent slippage of the articles conveyed, may be manufactured at low cost, and are relatively easy to clean. The rotor phase generation unit is arranged to generate an estimated value of the rotor phase and an estimated value of a rotor speed using the correlation signal. A reflective layer is formed on an inside surface of the concave to join the metal layer to form a reflective cup.