| 摘要 |
PROBLEM TO BE SOLVED: To improve durability and liability and to suppress decrease in the quality of printing by suppressing release between a vibrator and a diaphragm. SOLUTION: A liquid jetting head includes: a flow passage substrate 40 on which the diaphragm 46 is provided and a pressure room 42 is formed; a vibrator unit 2 fixed on the diaphragm 46; and a case 4. The vibrator unit 2 is equipped with the vibrator 11 connected to a first island part 49 of the diaphragm 46, and a non-driven vibrator 19 brought into contact with a second island part 51 of the diaphragm 46. The flow passage substrate 40 is provided with the pressure room 42 which is provided in parallel and a dummy pressure room 43 which is provided on the end part side in the parallel providing direction of the pressure room 42 and is provided wider than the pressure room 42. An intermediate part 53 is provided which consists of a member constituting the first island part 49 and the second island part 51, and is arranged between the first island part 49 and the second island part 51, and is provided in a region opposing the dummy pressure room 43. The non-driven vibrator 19 is brought into contact with the second island part 51 and is connected with the intermediate part 53. COPYRIGHT: (C)2011,JPO&INPIT
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