Patent ID: 7258415

Claim:
A printhead tile for use in a printing system, the printhead tile comprising: a printhead integrated circuit including an array of ink nozzles; a channel layer provided adjacent the printhead integrated circuit, the channel layer provided with a plurality of channel layer slots; an upper layer provided adjacent the channel layer, the upper layer provided with an array of upper layer holes on a first side, and an array of upper layer channels on a second side, at least some of the upper layer holes in fluid communication with at least some of the upper layer channels, and at least some of the upper layer holes aligned with a channel layer slot; a middle layer provided adjacent the upper layer, the middle layer provided with a plurality of middle layer holes, at least some of the middle layer holes aligned with at least some of the upper layer channels; and, a lower layer provided adjacent the middle layer, the lower layer provided with an array of inlet holes on a first side, and an array of lower layer channels on a second side, at least one of the inlet holes in fluid communication with at least one of the lower layer channels, and at least some of the middle layer holes aligned with a lower layer channel; whereby, the inlet holes receive different types or colors of ink, each type or color of ink separately transported to different nozzles of the printhead integrated circuit, wherein each ink nozzle comprises a nozzle chamber for holding the ink received via the inlet holes and a thermal bend actuator beam configured to thermally expand upon receipt of an electrical current so as to cause ejection of ink from the nozzle chamber.