a unit including {TAIL ~ a plurality} of magnets supported on a yoke, {HEAD ~ the unit} including a molding support region; and 
a unit including { TAIL ~ a plurality } of magnets supported on a yoke , { HEAD ~ the unit } including a molding support region ; and
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH