| 摘要 |
PURPOSE:To supply stably ink, by a method wherein the title supply tube is made into double tube structure with a high-molecule series inner tube and high-molecule series outer tube which covers at least a part of the inner tube and a porous component is provided between the above inner and outer tubes. CONSTITUTION:A porous component 20 is provided between a high-molecule series inner tube 11a and high-molecule sries outer tube 11b. In this instance, exchange between air (arrow A) and volatile content steam 14a (arrow B) in ink through transmission is performed through the outer tube 11b. Then as exchange of only the volatile content steam (arrow B) in the ink is performed through the hinner tube 11a, generation of a bubble in the inner tube 11a is prevented completely. The ink, therefore, can be supplied stably. As holding force of the ink and gas is increasd in a space between the inner and outer tubes due to a matter that the porous component 20 exists especially interruption effect of the open air is increased all the more and the generation of the bubble in the inside of the inner tube 11a is eliminated completely. |
