| 摘要 |
A bypass flowing passage communicating with the inside of a bag part not through a second valve mechanism is provided for an outlet part 12 , and ink can be filled from the outlet part into the bag part 11 despite the second valve mechanism V 2 . After an ink pack is housed in an inner case ink is filled into the ink pack. When a first seal film is welded to the inner case, the ends of the bag part are caught in a cartridge case because the bag part is not bulky. Therefore, the maximum amount of ink for the inner volume of the cartridge case can be filled. Further, since a bypass flowing passage is blocked after ink has filled the ink pack, contaminating of air bubbles into the bag part through the bypass flowing passage is prevented.
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