A molten resin is prevented from entering between a surface of a sheet-shaped insert such as a label including a printed film or the like and a surface of an outer mold unit and the insert is prevented from being downwardly pushed, when a synthetic article in which the insert is bonded to the outer peripheral surface of the thin cylindrical molded body is injection molded by the insertion molding. The spindle motor 1 includes a hydrodynamic bearing device 4 including a shaft 41, a sleeve 42, first and second thrust flanges 41b and 41c, first and second thrust bearing portions 72 and 73 and thrust dynamic pressure generating grooves 72a and 73a. A player selection of a second predetermined number of keno board spots is received. The cutting head also includes a first set of returns adjustably opposing a second set of returns, the distance between which is adjustable and which may be driven apart by a cutting member tensioning device. The stereoselective fluorinating agent used in the reaction may be, for example, a fluoropyridinium or fluoroquinuclidium compound, for example, Selectfluor\xae. Then, the base station determines a format of a communication channel with the user equipment based on the selected algorithm and quality of communication with the user equipment.