摘要 |
<p>An ink tank comprises a housing (11) and a cover member (12), providing a hollow containing portion (4) when bonded together, and in this containing portion (4), ink absorbent (20) formed by laminating fiber material is contained. On the cover member, a rib (1) is provided to extrude into the containing portion (4). This rib (1) comprises a first directional rib (6) arranged diagonally to the fibrous lamination face of the ink absorbent (20), and a second directional rib (7) that intersects with the first directional rib (6) orthogonally. On the position surrounded by the first directional rib (6) and the second directional rib (7), an atmosphere communication port (2) is formed, and around the atmosphere communication, the communication port guide (3) that extrudes into the containing portion (4) is arranged. The height of the rib (1) is larger than that of the communication port guide (3). The rib (1) presses the ink absorbent (20) without being buried in it. With the rib (1) thus structured, it is possible to enhance the use efficiency of ink in the ink tank, while preventing ink from leaking externally, and the rib (1) from being broken as well. <IMAGE></p> |