As all the sheets P in one print job are printed, {HEAD ~ the control section} 80 executes the flushing operation and {TAIL ~ a voltage adjustment} to the head 4 
executes
As all the sheets P in one print job are printed , { HEAD ~ the control section } 80 executes the flushing operation and { TAIL ~ a voltage adjustment } to the head 4
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH