Printhead assembly with ink chamber defining structures

摘要

A printhead assembly for an ink jet printer includes an elongate ink supply structure that defines at least one longitudinally extending ink passage and at least one set of holes in fluid communication with the at least one ink passage. A first ink chamber defining structure defines at least one ink chamber formation on one side and at least one set of ink inlet openings on an opposite side in fluid communication with the at least one ink chamber formation. The first ink chamber structure is engaged with the ink supply structure so that each ink inlet opening is in fluid communication with a respective hole of the ink supply structure. A second ink chamber defining structure defines at least one ink chamber formation on one side and at least one set of exit holes on an opposite side in fluid communication with the at least one ink chamber. The first and second ink chamber structures are engaged with each other so that respective ink chamber formations define at least one ink chamber. At least one elongate printhead chip has a plurality of ink inlets that are mounted on the second ink chamber defining structure so that each ink inlet is in fluid communication with a respective exit hole of the second ink chamber structure.