| 摘要 |
An ink circulation system 1 includes: an ink-jet head 2 in which a shared ink flowing route 12 is formed, an ink tank 3, a supply flowing route 4 for supplying ink from the ink tank 3 to the shared ink flowing route 12, a reflux flowing route 5 for refluxing the ink from the shared ink flowing route 12 to the ink tank 3, and a differential pressure generating unit 7 for generating a differential pressure in the ink tank 3. The differential pressure generating unit 7 is equipped with an impeller 21 placed inside the ink tank 3, and a drive unit 22 placed outside the ink tank 3. Then, the drive unit 22 operates to turn the impeller 21, by means of remote driving, for generating a differential pressure between a supply port 4a of the supply flowing route 4 and a reflux port 5a of the reflux flowing route 5 so as to circulate the ink through the ink flowing route by way of the ink tank 3, the supply flowing route 4, the shared ink flowing route 12, and the reflux flowing route 5. |
