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