| 摘要 |
PURPOSE:To improve the removing efficiency of fine ink particles by connecting a specific gas-injection apparatus to an air-feeding port of an aeration zone. CONSTITUTION:A gas-injection apparatus 5 having a channel 13 for raw material liquid at the center and a tubular porous material 6 connected to an air feeding port 12 at the back is connected to the air-feeding port 12 of an aeration zone. Fine bubbles can be generated in the injection of air to improve the dispersing effect and the number of bubbles can be controlled simply by changing the injection rate of air. |
