{HEAD ~ The diaphragm} is biased to a closed position and so seals the ink supply from the printhead as a default condition even in {TAIL ~ the event} of a power failure 
{ HEAD ~ The diaphragm } is biased to a closed position and so seals the ink supply from the printhead as a default condition even in { TAIL ~ the event } of a power failure
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH