| 摘要 |
PURPOSE:To prevent a foreign matter, such as dusts, from mixing in a liquid tank through a vent hole, by a method wherein the vent hole, formed in the upper part of the liquid tank, is covered with a breathable cover located in a manner to emerge from a supply tank situated to the upper part of the liquid tank. CONSTITUTION:A liquid feeder is constituted such that a tank 2 for supplying liquid is mounted on a liquid tank 1, a position of a ventilating tube 3 is regulated so that the tip of the ventilating tube 3 is positioned in a required liquid surface level in the liquid tank 1, liquid under a specified pressure is supplied from the liquid tank 1 to a liquid jetting head 10 over the supply of liquid from the tank 2 for supplying to the liquid tank 1. In said liquid feeder, a vent hole 8, provided in the upper part of the liquid tank 1, is covered with a breathable cover 7 situated in a manner to emerge from the lower part of the tank 2 for supplying. |
