{HEAD ~ The inkjet printer head} 4, wherein {TAIL ~ said protective layer} is of at least one material selected from the group consisting of silicon oxide, silicon nitride, silicon carbide, and tantalum 
wherein
{ HEAD ~ The inkjet printer head } 4 , wherein { TAIL ~ said protective layer } is of at least one material selected from the group consisting of silicon oxide , silicon nitride , silicon carbide , and tantalum
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH