Ink-jet head and ink-jet printing apparatus
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United States of America Patent
Stats
-
Aug 28, 2001
Grant Date -
N/A
app pub date -
Sep 1, 1998
filing date -
Sep 4, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In order to enable high speed printing with maintaining reliability of ink ejection, an auxiliary hole is provided in an upper wall forming a liquid passage. An opening area of the auxiliary hole is set to be greater than or equal to three times of an opening area of an ejection opening, and a minimum distance between the auxiliary hole and the ejection opening is set to be greater than or equal to three times of a height of the liquid passage.
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