Ink jet head and ink jet printing apparatus with driving channels and dummy channels
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United States of America Patent
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-
May 12, 2015
Grant Date -
Sep 11, 2014
app pub date -
Feb 27, 2014
filing date -
Mar 6, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An ink jet head includes a plurality of nozzles and a piezoelectric member provided with driving channels for storing ink. Each of the driving channels communicates a respective one of the nozzles. Dummy channels are alternately arranged with the driving channels. First side walls between the driving and dummy channels include a first driving channel side surface and a first dummy side surface. Second side walls between the driving channels and the dummy channels include a second driving channel side surface and a second dummy channel side surface. When a voltage is applied to electrodes on the first dummy channel side surfaces, the corresponding first side wall is deformed. When a voltage is applied to electrodes on the second dummy channel side surfaces, the second side wall is deformed.
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