Ink tank unit, an ink jet cartridge having said ink tank unit and an ink jet apparatus having said ink jet cartridge
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United States of America Patent
Stats
-
Mar 27, 2001
Grant Date -
N/A
app pub date -
Nov 12, 1998
filing date -
Jun 29, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An ink jet cartridge comprises an ink jet head unit for discharging the ink, and an ink tank unit having an ink supply port for supplying the ink to the ink jet head unit. The ink tank unit has a partition portion for partitioning between an ink storing portion for storing the ink to be supplied to the ink jet head unit and a negative pressure generating member receiving portion having a negative pressure generating member. The ink supply port is provided on the negative pressure generating member receiving portion. The partition portion has an ink communicating portion at an end portion of the partitioning portion on the side of the negative pressure generating member receiving portion where the ink supply port is provided, and makes contiguous the ink storing portion and the negative pressure generating member receiving portion in a movement direction of the ink tank unit when discharging the ink.
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