| 摘要 |
PURPOSE:To make opening and closing of a slit sure by providing a partition wall having the slit which closes at steady state and opens at a specified pressure difference or larger and consisting of an elastic member on an ink tank, etc., and providing the slit on the apex of the partition wall. CONSTITUTION:A slit bleeder 100 is mounted on an ink jet and the slit bleeder 100 is formed of e.g. a silicone rubber. This slit bleeder 100 is mounted in a mounting stage 140 and the mounting base part is made into a shape following the outer peripheral shape of the base part of the bleeder. In addition, a conical recessed part 120 is provided on a slit part 110 on the inside of the slit bleeder 100. The slit 110 is usually under closed condition, but when an ink liq. drop is extruded from a recording head part, the inner pressure of the slit bleeder becomes low and the wall becomes dented inside. Then, when the pressure difference between inner pressure and outer pressure becomes to a specified value or larger, the slit 110 is opened and an ink flows into the slit bleeder 100. |
