| 摘要 |
PURPOSE:To obtain the titled device capable of recording with several kinds of driving frequencies by a method wherein distances of the communicating hole between the 1st ink chamber with pressure applying means and the 2nd ink chamber with an ink jet hole to plural pressure applying means are changed. CONSTITUTION:Pressure applying means (piezo electric elments 1a, 1b, 1c and oscillating plates 2a, 2b, 2c) are provided on the pressure applying means mounting parts 18 in the respective ends of ink chambers 16. When the pressure transmitting distances la, lb, lc of the oscillating plates 2a, 2b, 2c to the communicating hole 5 have a relation la<lb<lc, a low voltage driving can be performed in one device for driving frequencies of plural kinds. |
