Pagewidth inkjet printhead assembly with nozzle arrangements having actuator arms configured to be in thermal balance when in a quiescent state
First Claim
1. A pagewidth inkjet printhead assembly having a plurality of nozzle arrangements each comprising:
- walls defining an ink chamber having an ink supply channel and an ink ejection port having an ink spreading prevention rim; and
a thermal actuator mechanism configured to operatively eject ink from the chamber via the ejection port, wherein the mechanism includes an actuator arm having two layers which are formed from a conductive, resiliently flexible material, said layers surrounding a central material layer so that said two layers are in thermal balance with the arm in a quiescent state.
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Accused Products
Abstract
Provided is a pagewidth inkjet printhead assembly having a plurality of nozzle arrangements. Each nozzle arrangement includes walls defining an ink chamber having an ink supply channel and an ink ejection port. The ink ejection port includes an ink spreading prevention rim. Each nozzle arrangement also includes a thermal actuator mechanism configured to operatively eject ink from the chamber via the ejection port. The actuator mechanism includes an actuator arm having two layers which are formed from a resiliently flexible conductive material. The arm includes the two layers surrounding a central material layer so that said two layers are in thermal balance with the arm in a quiescent state.
19 Citations
7 Claims
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1. A pagewidth inkjet printhead assembly having a plurality of nozzle arrangements each comprising:
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walls defining an ink chamber having an ink supply channel and an ink ejection port having an ink spreading prevention rim; and a thermal actuator mechanism configured to operatively eject ink from the chamber via the ejection port, wherein the mechanism includes an actuator arm having two layers which are formed from a conductive, resiliently flexible material, said layers surrounding a central material layer so that said two layers are in thermal balance with the arm in a quiescent state. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification