| 摘要 |
For forming a group or rows of nozzles (15) in a substrate (25) of an ink-jet head, firstly, a laser irradiation source (150) and a masking material (51) in which a plurality of holes (51a) arranged in two rows are formed, are arranged on an upper side of a position at which one group of rows of nozzles of the substrate is formed. Next, an ultraviolet laser is irradiated from an upper side of the maskingmaterial, and a laser which has passed through the masking material is irradiated on the substrate. Two rows of nozzles are formed in a portion of the substrate at which the ultraviolet laser is irradiated. Accordingly, by irradiation of the laser once, it is possible to form a plurality of nozzles arranged in a row. |
