| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an ink jet recording head excellent in strength and its manufacturing method, in which the working quality, uniformity and workability of an orifice forming surface are improved. SOLUTION: At the formation of a flow path forming member 4, a rear channel 12 a throttling part 13 and a front channel 14, all of which are individually separated by a partition wall 11. At this time, no orifice 5 is provided and the front channel 14 is only precision-formed as a recessed part. After that, laser working is performed to a region including a portion turning into an orifice 5 so as to step by the depth larger than the thickness between the deepest part of the front channel 14 and the surface of the flow path forming member 4 in order to make an orifice surface 15. Thus, the deepest part of the front channel is opened so as to make the orifice 5.</p> |
