Hammer bank velocity during movement through a print span is sensed, and {HEAD ~ further kinetic energy} is supplied by {TAIL ~ the servo system} as required to compensate for friction losses, braking effects during printing, and other causes of variation in hammer bank speed 
is supplied by
Hammer bank velocity during movement through a print span is sensed , and { HEAD ~ further kinetic energy } is supplied by { TAIL ~ the servo system } as required to compensate for friction losses , braking effects during printing , and other causes of variation in hammer bank speed
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH