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