Ink jet recording unit having an ink tank section containing porous material and a recording head section
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United States of America Patent
Stats
-
Jan 26, 1993
Issued Date -
N/A
app pub date -
Aug 19, 1991
filing date -
Jul 26, 1988
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An ink tank for storing recording ink comprises an ink storage section including an ink holding member for holding ink and substantially entirely occupying an ink storage space and a ventilation section having a vent hole communicating with the interior of the ink tank with atmosphere, the ventilation section including an ink-repellent member having an ink-repellent character. The ink holding member can be formed of one porous member or two porous members, one of high and one of low porosity. The member with high porosity is provided adjacent an ink supply port. An ink jet recording head also comprises the same ink tank and an ink jet recording head section including an ink discharge port for discharging ink, an ink passage communicating with the ink discharge port and an energy generation element for generating energy utilized for ink discharged. Further an ink jet recording apparatus includes the same ink jet recording head.
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