| 摘要 |
A second sealing film F 2 is thermally bonded onto a leading end portion R 1 of an ink lead-out member 32 b of an ink pack and an annular projecting portion R 2 provided on an ink casing 31 . Thereby, a gap D produced between the ink lead-out member 32 b and the ink casing 31 can be closed from outside the ink casing 31 . Accordingly, the airtightness of a space S in the ink casing 31 is kept, thus making it possible to raise the pressure in the space S and generate such a force as to crush the ink pack.
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