Bonded magnets are aligned around {HEAD ~ a shaft} so as to form {TAIL ~ a roller shape magnetic body} as shown in FIG 2 
to form
Bonded magnets are aligned around { HEAD ~ a shaft } so as to form { TAIL ~ a roller shape magnetic body } as shown in FIG 2
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH