{HEAD ~ The method} of manufacturing {TAIL ~ a liquid jet head} 10, further comprising, after the groove formation step: 
{ HEAD ~ The method } of manufacturing { TAIL ~ a liquid jet head } 10 , further comprising , after the groove formation step :
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH