| 摘要 |
PURPOSE:To prevent certainly bubbles and foreign matters from entering an ink jet head by a method wherein a rubber stopper arranged to a filter via a space is provided and when an ink tank is mounted, a supply needles passes through the rubber stopper and besides, protrudes into the space. CONSTITUTION:A tip part of a connecting pipe 12 is inserted into a supply opening 10 provided to a substrate 1 and a thin sheet 8. A first thin filter 11 composed of nylon fiber or the like is arranged to an lower part of its inside, and a second connecting pipe 14 is so inserted as to push that down. Leak of ink is prevented by arranging a rubber packing 15 between the connecting pipe 12 and the second connecting pipe 14. A stainless made supply needle 16 is driven into the second connecting pipe 14 from an upside. A passage is thus constructed vertically upward over from the first filter to an ink tank 17, and bubbles are difficult to advance downward due to micro holes of an absorbing material 18. Further, entrance thereof is further prevented with a second filter 19. |
