发明名称 |
Micro-electromechanical nozzle arrangement having cantilevered actuators |
摘要 |
The invention provides for a micro-electromechanical nozzle arrangement for an inkjet printhead. The arrangement includes a substrate defining an inverted pyramidal ink chamber with a vertex thereof terminating at an ink supply channel defined by the substrate, said substrate having a layer of CMOS drive circuitry. The arrangement also includes a roof structure connected to the drive circuitry layer and covering the ink chamber, the roof structure defining a fluid ejection nozzle rim above said chamber. Also included is a plurality of actuators fast with and displaceable with respect to the roof structure, the actuators radially spaced about the nozzle rim between the guide rails. Each actuator has a serpentine heater element configured to expand thermally upon receiving current from the drive circuitry thereby moving said actuators into the chamber to increase a fluid pressure inside the chamber to eject a drop of ink via the ejection nozzle. Each actuator is cantilevered to a heater element in a bendable manner.
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申请公布号 |
US7758161(B2) |
申请公布日期 |
2010.07.20 |
申请号 |
US20080205911 |
申请日期 |
2008.09.07 |
申请人 |
SILVERBROOK RESEARCH PTY LTD |
发明人 |
SILVERBROOK KIA;MCAVOY GREGORY JOHN |
分类号 |
B41J2/14;B41J2/04;B41J2/05;B41J2/16;B41J2/175 |
主分类号 |
B41J2/14 |
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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