Seal ring and ink cartridge using thereof
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United States of America Patent
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Issued Date -
Jan 26, 2006
app pub date -
Dec 19, 2003
filing date -
Jan 14, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention involves seal rings useful for ink cartridges. The invention also involves ink cartridges having such seal rings. The seal ring comprises a tube-shaped, elastic part having an insertion opening at its lower end for receiving an ink supply needle. The top of the insertion opening includes a top sealing film. The top sealing film closes in its natural state and prevents ink from leaking through. The seal ring of the invention is simple in structure and effective in preventing ink from leaking out.
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