Ink supply device and ink-jet recording head with filter and shaped flow passage
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United States of America Patent
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Jun 26, 2001
Grant Date -
N/A
app pub date -
Jun 11, 1999
filing date -
Jun 17, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ink supply device having an ink flow passage for communicating an ink containing part for containing an ink with a discharge part for discharging the ink, the ink flow passage is characterized by a filter device including a filter and a filter box for containing the filter and provided with an ink inlet port and an ink outlet port, wherein an area at the ink inlet port side of the filter box is disposed beneath an area at the ink outlet port side of the filter box, and an inside diameter of ink flow passage at the ink inlet port side of the filter box is narrowed in a diameter to be smaller than an inside diameter of the ink flow passage immediately before expanding into a bell-bottomed shape towards the filter.
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