Importance

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Abstract

A nozzle arrangement is provided for an inkjet printhead. The nozzle arrangement includes a wafer substrate assembly defining an ink inlet channel and a first wall surrounding the ink inlet channel. A thermal actuator includes an anchor extending from the wafer substrate assembly outside of the confines of the first wall, and thermal actuator arms extending from the anchor. A roof structure is operatively mounted to terminate the actuator arms and covers the first wall. The roof structure defines a second wall surrounding the first wall so that the wafer substrate assembly and the roof structure together define a nozzle chamber in which ink from the ink inlet channel can be supplied. The roof structure further defines a rim through which ink in the nozzle chamber can be ejected. Upon thermal actuation of the actuator, the actuator moves the roof structure with respect to the wafer substrate assembly to thereby eject ink in the nozzle chamber through the rim.

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First Claim