The water repellency Characteristic structure and its production manner, the fit strengthening film and the indium amp; tin oxide film are formed

摘要

PROBLEM TO BE SOLVED: To provide a water-repellent structure which enables enhancement of water-repellent and oil-repellent functions and, at the same time, improvement of durability performance of the water-repellent and oil-repellent functions, and its production, an ink-jet head and its production, and an ink-jet printer. ;SOLUTION: An adhesion reinforcing film 2 and an indium/tin oxide film 3 are formed on the surface of the ink-discharge side of a stainless steel nozzle plate 27 having a nozzle 26-1, and thereupon is further formed a water-repellent oil-repellent film 4 obtained by bonding a water-repellent substance having a hydroxyl group and a reactive site by reaction to the indium/tin oxide film 3. Further, the ratio of the intensity of an X-ray diffraction peak at plane (222) to that at plane (400) of the indium oxide crystal in the indium/tin oxide film 3 is set at not less than 1.1 or the oxygen concentration of a sputtering gas in forming the indium/tin oxide film 3 is set at not less than 30% with the use of an indium/tin target under a condition of the oxygen concentration of the sputtering gas of not less than 30%.;COPYRIGHT: (C)2001,JPO