The printing device prints {HEAD ~ an image} by forming {TAIL ~ dots} on the medium by the printing head 
by forming
The printing device prints { HEAD ~ an image } by forming { TAIL ~ dots } on the medium by the printing head
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH