摘要 |
<p>A printing device (10) including a substrate (22) having an aperture (20) extending therethrough, wherein the aperture includes a side wall and defines a liquid ink flow path, an ink firing chamber (24) fluidically connected to the aperture, and a coating positioned on the side wall of the aperture, the coating being impervious to etching by liquid ink, and wherein the coating is chosen from one of silicon dioxide, aluminum oxide, hafnium oxide and silicon nitride.</p> |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
RIVAS, RIO;CRABTREE, JON, A.;NIKKEL, ERIC, L.;BHOWMIK, SIDDHARTHA;CHUNG, BRADLEY, D.;BERHANE, SAMSON |