A single pass printer prints in {TAIL ~ a first direction} and {HEAD ~ a second direction} on a print medium 
A single pass printer prints in { TAIL ~ a first direction } and { HEAD ~ a second direction } on a print medium
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH