| 摘要 |
PROBLEM TO BE SOLVED: To provide an ink-jet printer head in which an ink repellency of a surface of an orifice plate can be easily changed and a manufacturing method thereof. SOLUTION: First a metallic film 29 coated to the surface of the orifice plate 18 after having discharge nozzles 22 formed thereto is treated by anodic oxidation. Pin holes 38 of a desired density are formed on an oxidized film 37 by controlling an oxidation process conduction time in this anodic oxidation process. Then, the surface of the metallic film 29 is subjected to electrodeposition coating with ink repellent resin. The ink repellent resin 39 is not electrodeposited to oxidized coating parts 37' because of insulating properties, while the ink repellent resin 39 is electrodeposited in the pin holes 38 because the pin holes are kept conductive. A ink repellent film with desired ink repellent characteristics can thus be formed on the surface of the orifice plate 18.
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