| 摘要 |
When a recording head unit for an ink-jet printer is shipped, the recording head is filled with a preservative solution, and nozzle surfaces of the recording head are covered with a nozzle protector, while ink-supply ports, to which an ink-cartridge is to be connected, are sealed with a stopper, in order to prevent leakage or evaporation of the preservative solution. Then, the entire recording head unit is vacuum packed in a pouch-like conforming sealing member having a layered structure which is non-permeable to gases. This structure can reliably prevent the preservative solution from evaporating, and keep the interior of the recording head in good condition even if the recording head is stored for a long span of time.
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