A process to manufacture a surface-conductive resin in a short time at a low cost without damaging the main chain of a polymer is provided. The tank is mounted on the radiator. Each pair of flow passages extends between the hub inner and outer circumferential surfaces, and each flow channel is formed in the hub outer circumferential surface and couples the pair of flow passages in fluid communication with one another. In inspection of the banknote, the quantity of fluorescence from the fluorescent member is first detected, and the quantity of the light emitted from the light-emitting device is corrected based on the quantity of the fluorescence detected. Several nodes could form a broker cooperative aggregate node and have a unique identifier for all the nodes in the cooperative if they have an internal mechanism for preventing publication looping. A back cover is removably secured to the outer wall over the outer opening to seal the cavity and guide the air from the cavity to the outlet.