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