An electric field for development is formed in {HEAD ~ a developing region} between {TAIL ~ the photoconductive drum} and the sleeve 
An electric field for development is formed in { HEAD ~ a developing region } between { TAIL ~ the photoconductive drum } and the sleeve
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH