Pressure-regulating valve and liquid droplet ejection apparatus having the same
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United States of America Patent
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Feb 3, 2015
Issued Date -
N/A
app pub date -
Jan 19, 2010
filing date -
Feb 19, 2009
priority date (Note) -
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Abstract
A pressure-regulating valve in which the pressure of a functional liquid fed to a primary chamber from a functional liquid feeding means is regulated by opening and closing a valve body, the functional liquid is fed to a secondary chamber, and the functional liquid is fed from the secondary chamber to an inkjet-type functional droplet ejection head; wherein the valve body has a valve body main body that directly opens and closes with respect to a valve seat, the valve body main body being provided to the primary chamber; and a valve holder including a holding part that holds the valve body main body and an actuating shaft that comes in contact with a pressure-receiving membrane, the actuating shaft extending concentrically through the communication flow passage from the holding part; the actuating shaft is formed so as to taper to a point toward the pressure-receiving membrane; and the communication flow passage is formed to have a complementary shape with respect to the actuating shaft.
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