| 摘要 |
A mixed fluid obtained by mixing and stirring a high pressure fluid and a plating solution containing fine particles is contacted with a body to be plated to form a composite plating film. When an inkjet recording head is manufactured, a protective film 14 for plating is formed on a surface on a side opposite to an ink jet side of a nozzle plate 11 and, preferably, a mixed fluid obtained by mixing and stirring supercritical carbon dioxide, and a plating solution containing liquid repellent fine particles and a surfactant is contacted with a nozzle plate to form a composite plating film 16 on a surface on an ink jet side. After plating, the protective film for plating is removed from the nozzle plate.
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