Ink jet recording head including beams dividing supply ports
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United States of America Patent
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-
May 3, 2011
Grant Date -
Jun 25, 2009
app pub date -
Feb 11, 2009
filing date -
Mar 23, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An ink jet recording head has sufficient and uniform ink refill for all orifices and separate flow paths even though the substrate has high rigidity by dividing a supply port into a plurality of ports. The substrate of the ink jet recording head has a plurality of separate flow paths corresponding to discharge pressure generating elements, a common flow path communicating with the separate flow paths, an ink supply port communicating with the common flow path and supplying ink to the common flow path, and a plurality of beam portions dividing the ink supply port. A recess is formed on the common flow path, extending to the separate flow paths formed nearest to the beam portion.
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