The deposition means has {HEAD ~ a body} communicating with the supply of material and a valve means responsive to the control selectively delivers {TAIL ~ droplets} to the substrate 
The deposition means has { HEAD ~ a body } communicating with the supply of material and a valve means responsive to the control selectively delivers { TAIL ~ droplets } to the substrate
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH