{TAIL ~ An electrical bias} is applied across the gap between the belt and {HEAD ~ the overcoated ohmic layer} 
{ TAIL ~ An electrical bias } is applied across the gap between the belt and { HEAD ~ the overcoated ohmic layer }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD