Free ink system
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United States of America Patent
Stats
-
Feb 24, 2004
Grant Date -
Nov 14, 2002
app pub date -
Mar 26, 2002
filing date -
Mar 26, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A free ink marking instrument for dispensing an ink, including a housing, a reservoir for storing ink within the housing, a feed tube to convey ink communicating with the reservoir, a tip disposed within the feed tube for conveying ink to a substrate at a marking end of the tip, a porous buffer disposed within the housing adjacent the feed tube and configured for storing ink during periods of a decreasing pressure differential between the reservoir and the atmosphere, and bubble separation area in the form of either a hole in the feed tube or a hole or passage formed between the feed tube and the tip, is disclosed.
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Cited Art Landscape
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