| 摘要 |
An ink jet printhead has a plurality of nozzles and a bubble forming chamber corresponding to each of the nozzles respectively. The bubble forming chambers are adapted to contain a bubble forming liquid and a heater element is disposed in each of the bubble forming chambers respectively. The heater elements are configured for thermal contact with the bubble forming liquid and, a pair of electrodes for each of the heater elements are positioned adjacent each other such that the heater element provides a single current path between the electrodes of each pair. Each of the heater elements has a double omega shape in which a smaller, inner omega shape is concentric with, and encircled by, a larger, outer omega shape.
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