A drive roller is rotatably disposed in {HEAD ~ the bore} of {TAIL ~ the developer carrier} for causing the developer carrier to rotate 
of
A drive roller is rotatably disposed in { HEAD ~ the bore } of { TAIL ~ the developer carrier } for causing the developer carrier to rotate
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH