| 摘要 |
An in supply system for an ink jet printer, comprising: an ink cartridge for accommodating a limited volume of liquid ink, and ink tank having a volume larger than said limited volume and connectable to the ink cartridge, and an ink supply line including a disengageable coupling, for connecting the ink tank to the ink cartridge, wherein the coupling includes a valve mechanism which, when the coupling is disengaged, automatically blocks the ink supply line and opens a vent passage for venting the interior of the cartridge.
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