| 摘要 |
PROBLEM TO BE SOLVED: To provide a valve unit high in the flexibility of layout of components, a flow passage unit, a fluid supply device, a fluid injection device, and a method and device for manufacturing the valve unit. SOLUTION: The valve unit is provided with: a pressure chamber 46 communicating with an ink flow passage 49 through an ink supply chamber 44 and a communicating hole 50; a valve element 51 which closes the communicating hole 50 by getting into a closed state; a pressure receiving part 56 which constitutes one wall surface of the pressure chamber 46 and distorts and displaces based on pressure variations within the pressure chamber 46; and a pressure receiving plate 57 which is fixed to one surface side of the pressure receiving part 56 with the center position being shifted to one side relative to the pressure receiving part 56. The pressure receiving plate 57 is deformed inwardly more in the end part on the other side near the center position of the pressure receiving part 56 than in the end part on the one side, according to the displacement of the vicinity of the center of the pressure receiving part 56 to the inside of the pressure chamber 46, to thereby press the valve element 51 to be opened. COPYRIGHT: (C)2011,JPO&INPIT |
