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