A fastener-driving tool includes a combustion power source configured for driving a driver blade linearly towards a workpiece, and an electrical power source associated with the combustion power source for rotationally driving the driver blade upon completion of the linear travel, both power sources being disposed in the tool. This arrangement of the cylindrical portion permits size reduction of the cutout, and assures sufficiently high degrees of strength and rigidity of the piston. A data store is operable to store the bid amounts. The small-diameter disk is positioned by the positioning projections placed in the first guide grooves, and the large-diameter disk is positioned by the positioning projections placed in the second guide grooves. In particular, this invention relates to the production of prostaglandins of the PGF2\u03b1-series, including latanoprost, travoprost, and bimatoprost, which are active pharmaceutical ingredients used for the reduction of elevated intra-ocular pressure in patients with glaucoma and ocular hypertension. According to the present invention, regardless of the alignment film, a stable homeotropic alignment liquid crystal film may be manufactured.