Printhead nozzle arrangements with magnetic paddle actuators
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United States of America Patent
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-
Sep 20, 2011
Grant Date -
Jun 30, 2011
app pub date -
Feb 28, 2011
filing date -
Jul 15, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A printhead has a plurality of nozzle arrangements. Each nozzle arrangement includes a wafer substrate defining a nozzle chamber, said chamber having a roof wall with an ink ejection port defined therein and an ink supply channel defined through the substrate for supplying the chamber with ink; a magnetic coil arrangement positioned around the inlet of the nozzle chamber; bridge members spanning over the magnetic coil arrangement, the bridge members being supported on support posts protruding from the magnetic coil arrangement and having a resilient characteristic; and a magnetic paddle supported from the bridge members over the inlet, the magnetic paddle for ejecting ink from the chamber via the ejection port.
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