| 摘要 |
An ink-jet printer cartridge upper cover includes an inner tube, an outer tube, a non-rigid sealing ring defining a hole at the center portion thereof, and a vent-tip forming a cavity about the bottom surface thereof and having an air passageway extending from the bottom surface of said cavity through the hole, the upper cover inner tube, and said upper cover outer tube. Inner surface of the non-rigid sealing ring hole engages with outer surface of the upper cover inner tube, and outer surface of the hole engages with the inner surface of the cavity.
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