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