Each of the non ejection grooves includes, on the first end thereof, an inclined surface which is inclined outward from {HEAD ~ a lower surface opening} opened on a lower surface of the non ejection groove toward {TAIL ~ an upper surface opening} opened on an upper surface thereof 
opened toward
Each of the non ejection grooves includes , on the first end thereof , an inclined surface which is inclined outward from { HEAD ~ a lower surface opening } opened on a lower surface of the non ejection groove toward { TAIL ~ an upper surface opening } opened on an upper surface thereof
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH