Wide-array inkjet printhead assembly having planarized mounting layer for printhead dies

摘要

A method of forming a wide-array inkjet printhead assembly (12) includes providing a substrate (32), disposing a planarization layer (34) on a face (321) of the substrate such that a first surface (342) of the planarization layer contacts the face of the substrate, mechanically planarizing a second surface (341) of the planarization layer opposite the first surface, and mounting a plurality of printhead dies (40) on the second surface of the planarization layer. As such, a front face (471) of each of the printhead dies lies in substantially one plane.