A dot type printer of the type using printing pins or {HEAD ~ wires} is improved by employing a driving system which includes a variable volume sealed container enclosing {TAIL ~ a pressure} transmitting medium 
A dot type printer of the type using printing pins or { HEAD ~ wires } is improved by employing a driving system which includes a variable volume sealed container enclosing { TAIL ~ a pressure } transmitting medium
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH