{TAIL ~ A reciprocable drive mechanism} supporting the hammer bank is mounted to undergo {HEAD ~ free flight} with low friction along a selected axis parallel to a printing line 
{ TAIL ~ A reciprocable drive mechanism } supporting the hammer bank is mounted to undergo { HEAD ~ free flight } with low friction along a selected axis parallel to a printing line
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH