发明名称 |
INK PRESSURE REGULATOR WITH IMPROVED LIQUID RETENTION IN REGULATOR CHANNEL |
摘要 |
<p>There is provided an ink pressure regulator for regulating a hydrostatic pressure of ink supplied to an inkjet printhead. The regulator comprises: an ink chamber having an ink outlet for fluid communication with the printhead via an ink line; an air inlet; a regulator channel having a first end communicating with the air inlet and a second end communicating with a headspace of the chamber, the second end defining a bubble outlet; and a wetting system for maintaining at least some liquid in the regulator channel, thereby ensuring that air entering the headspace first passes through the liquid. The wetting system comprises a first wetting chamber connected to the first end, a second wetting chamber connected to the second end, and a liquid-retaining structure positioned in the second wetting chamber. The regulator channel, the first wetting chamber, the second wetting chamber and the liquid-retaining structure are all in fluid communication with each other. The regulator channel is dimensioned to control a Laplace pressure of air bubbles drawn from the bubble outlet as result of supplying ink to the printhead, thereby regulating a hydrostatic pressure of the ink.</p> |
申请公布号 |
WO2009049347(A1) |
申请公布日期 |
2009.04.23 |
申请号 |
WO2007AU01557 |
申请日期 |
2007.10.16 |
申请人 |
SILVERBROOK RESEARCH PTY LTD;MORGAN, JOHN DOUGLAS;WANG, MIAO;SILVERBROOK, KIA |
发明人 |
MORGAN, JOHN DOUGLAS;WANG, MIAO;SILVERBROOK, KIA |
分类号 |
B41J2/175 |
主分类号 |
B41J2/175 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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