| 摘要 |
Reinforcing ridges are formed so as to project from corner portions of peripheral walls, and an opening end edge is made thick-walled, so that an ink cartridge having a sufficient rigidity can be molded using vapor impermeable soft synthetic resins. In addition, shape keeping ribs are formed so as to project from the outer sides of longitudinal ribs that are formed on an inner surface of a cover body, so that deformation of the cartridge can be suppressed during vibration welding. Further, an engaging recess arranged in a lower surface of an ink cartridge is adapted to receive a support rod of an ink cartridge loading mechanism. A carriage cover body of the loading mechanism is closed as a lifter is guided with a guide groove which is parallel to the axial center of an ink supply needle so that the ink cartridge is allowed to descend correctly toward a recording head, so that the ink cartridge can be loaded correctly without breaking the ink supply needle.
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