a waste ink outlet in fluid communication with {TAIL ~ the printhead} IC via {HEAD ~ a downstream ink line} 
a waste ink outlet in fluid communication with { TAIL ~ the printhead } IC via { HEAD ~ a downstream ink line }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD