Patent attributes
A printhead tile is provided having a printhead integrated circuit and adjacent channel, upper, middle and lower layers. Each integrated circuit incorporates ink ejection nozzles which each have an ink chamber and a thermal bend actuator beam which thermally expands to cause ejection of ink from the chamber. The channel layer is adjacent the integrated circuit and has channel layer slots. The upper layer has upper layer holes on one side in communication with the channel layer slots and upper layer channels on an opposite side. The middle layer has middle layer holes in communication with the upper layer channels. The lower layer has lower layer channels on one side in communication with the middle layer holes and inlet holes on an opposite side. The inlet holes receive ink for supply to the chambers via the layers.
