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