| 摘要 |
PURPOSE:To obtain a high-efficiency ink supply device contriving stabilization of an ink supply performance and also suppression of an effect of a change in ambient environment by a simple construction. CONSTITUTION:An ink tank 3 is composed of an ink chamber 5 and an ink absorber chamber 6 provided with an air connecting hole 9 and loaded with an ink absorber 8. Firstly, ink in the ink absorber 8 is consumed. When the ink in the ink absorber 8 is almost exhaused, air is turned to bubbles when passing through a meniscus forming part 10 and moved to the ink chamber 5. An ink pressure is kept constant by the surface tension of the meniscus forming part 10. The meniscus forming part 10 is provided at a connecting part of the side wall of the ink chamber 5 to the ink absorber chamber 6 in the vicinity of the bottom, thus being disposed substantially vertically. Therefore, produced bubbles immediately move upwards, and there is no possibility that the surface of the meniscus forming part 10 may be covered with bubbles. In addition, the surface is always wet in contact with the ink in the ink chamber 5 for preventing the break of a meniscus. |
