To determine {HEAD ~ the position} of ink jet head 30 while driving motor 15, {TAIL ~ printing operations processor} 200 also counts the drive pulses 
To determine { HEAD ~ the position } of ink jet head 30 while driving motor 15 , { TAIL ~ printing operations processor } 200 also counts the drive pulses
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH