{HEAD ~ The oxidized surface layer} is electrically resistive, which is desirable in {TAIL ~ a developer roller} 
is desirable in
{ HEAD ~ The oxidized surface layer } is electrically resistive , which is desirable in { TAIL ~ a developer roller }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL