Patent ID: 7425052

Claim:
A printhead assembly comprising: (a) a plurality of printhead integrated circuits, each printhead integrated circuit comprising: a plurality of nozzles formed on a front side of the printhead integrated circuit; a plurality of ink supply channels for supplying ink from a backside of the printhead integrated circuit to the nozzles, each ink supply channel extending longitudinally along said printhead integrated circuit and each channel being divided into sections by silicon walls; and a plurality of etched trenches defined in the backside; and (b) an ink manifold having a mounting surface, the backside of each printhead integrated circuit being bonded to the mounting surface with an adhesive tape comprising a liquid-based adhesive, wherein: the adhesive tape has a plurality of laser-drilled holes defined-, said holes being positioned to coincide with ink said silicon walls such that each hole supplies ink to two of said sections, and said adhesive is received, at least partially, in the plurality of etched trenches.