The apparatus and methods may utilize ink jet technology to apply {HEAD ~ the functional agent} directly to the substrate or to {TAIL ~ an intermediate surface} 
The apparatus and methods may utilize ink jet technology to apply { HEAD ~ the functional agent } directly to the substrate or to { TAIL ~ an intermediate surface }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL