Air extraction manufacturing method
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United States of America Patent
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Dec 9, 2014
Issued Date -
N/A
app pub date -
Nov 29, 2011
filing date -
Nov 29, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A method of making an ink cartridge by forming an ink chamber, an air accumulation chamber, and a cap including a vent hole is disclosed. The cap is affixed at a first end of the air accumulation chamber and a one way valve is disposed at the vent hole for preventing gas from entering the air accumulation chamber through the vent hole when a pressure in the air accumulation chamber is less than a cracking pressure of the one-way valve. A neck region narrower than the ink chamber and the air accumulation chamber is formed for fluidically connecting the ink chamber and the air accumulation chamber. A mass is placed within the air accumulation chamber, the mass having a dimension smaller than an interior dimension of the air accumulation chamber such that the mass is movable between the first end and a second end of the air accumulation chamber.
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