Large capacity ink cartridge
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United States of America Patent
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-
Feb 24, 1998
Grant Date -
N/A
app pub date -
May 4, 1995
filing date -
May 4, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved ink cartridge comprising an ink chamber, a pressure relief chamber coupled to the ink chamber, and at least one air bleed hole coupling the pressure relief chamber to the ink chamber, the air bleed hole having a capillary dimension for creating a negative pressure on any ink in the air chamber. The pressure relief chamber is positioned below the ink chamber, the ink chamber including an opening to couple the ink cartridge to an ink head, the opening including an automatic shutoff valve, and the air bleed hole is positioned at the bottom of the ink chamber.
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