| 摘要 |
A nozzle arrangement for an inkjet printer includes a wafer substrate defining a supply channel; chamber side and roof walls positioned on the substrate, said walls defining a nozzle chamber operatively supplied with ink via the supply channel, the roof wall having a nozzle rim defined thereon; a thermal bend actuator attached to said substrate via a post, the actuator passing through a slot defined in a wall of the chamber, the actuator ending in an ejection paddle inside the chamber, said actuator configured to eject ink from the nozzle chamber; a poker extending from the paddle towards the nozzle rim such that an ink meniscus is formed between the rim and the poker; and an actuator slot protection barrier mounted on the actuator proximate the slot and configured to reduce ink wicking on the nozzle rim during ejection of ink from the nozzle rim. The actuator includes a conductive heater portion which is normally balanced with a corresponding layer in thermal equilibrium.
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