| 摘要 |
<p>PROBLEM TO BE SOLVED: To increase the ink discharge speed and improve the impact accuracy of an ink and the production yield of an ink jet head.SOLUTION: In a nozzle plate (6) for an ink jet head, a taper shaped manifold (7) is formed by a first portion (3a) connected with a discharge hole (8) and a second portion (3b) connected with the first portion (3a). Uneven parts (11) are provided at the second portion (3b) to make surface roughness larger than that of the first portion (3a).</p> |
