Recovery unit and method that expel foreign matter into a common liquid chamber of an ink jet head using a partial cap
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United States of America Patent
Stats
-
Jul 7, 1992
Grant Date -
N/A
app pub date -
Jan 10, 1990
filing date -
Jan 11, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ink jet apparatus comprises an ink jet head having plural discharge openings for discharging ink and plural liquid channels communicating with respective discharge openings. A partial cap member, which can cover at least one of the discharge openings, is connected to a pressure source that can supply sufficient pressure through the covered discharge openings to force any foreign matter in the corresponding liquid channels into a common liquid chamber communicating with all of the channels. A liquid flow can then be created in the common chamber to flush the foreign matter from the ink jet head.
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