| 摘要 |
PROBLEM TO BE SOLVED: To supply ink surely and stably from an ink supply opening even when the flow rate of ink is high by ensuring a large opening area of the ink supply opening when it is provided at such a part as the tank width cannot be ensured sufficiently. SOLUTION: A second negative pressure generating member 1 is contained in a substantially rectangular parallelepiped ink containing section 2 and disposed between a first negative pressure generating member 3 and a plane forming an ink supply opening 4. The rectangular parallelepiped second negative pressure generating member 1 has a width equal to the width between the inner wall faces becoming the maximum area plane of the ink containing section 2. The rectangular parallelepiped second negative pressure generating member 1 is surrounded by a guide 5 comprising the two opposite inner wall faces becoming the maximum area plane of the ink containing section 2, and two opposite and parallel inner wall faces provided substantially perpendicularly to the ink supply opening plane while intersecting the two opposite inner wall faces. |
