| 摘要 |
PURPOSE:To increase the speed of ink discharging and reduce the size of a head. CONSTITUTION:An ink supply passage 6 is formed between an ink reservoir 7 and an ink pressurizing chamber 5. The passage 6 is formed of a groove formed on a board and of a sawtooth state in combination with straight lines perpendicular to an ink flowing direction and narrowed in a flowing direction. Further, shapes of grooves of both sides are formed symmetrically, thereby forming a fluid diode in an entire groove. That is, a resistance when ink flows is reduced in a forward direction of the ink flow with an arrow B, and a resistance when the ink flows reversely to an arrow W is oppositely increased. Thus, suction and discharge of the ink due to the chamber 5 are efficiently conducted. |
