Patent ID: 7407259

Claim:
A printhead assembly comprising a pagewidth inkjet printhead and an ink distribution system, the ink distribution system comprising: a longitudinal distribution housing having a plurality of ducts extending longitudinally therealong, each duct corresponding to a different ink; a longitudinal cover cooperating with said longitudinal distribution housing, said cover comprising a plurality of ink inlet ports, each ink inlet port corresponding to one of said ducts and being in fluid communication therewith; and a laminated ink distribution structure fixed to said longitudinal distribution housing and configured for distributing ink from said ducts to said printhead, wherein the laminated ink distribution structure includes multiple layers positioned one upon another with at least one of said layers having a plurality of ink holes therethrough, each ink hole conveying ink from one of said ducts en route to said printhead, and the layers of the laminated ink distribution structure sequenced from the longitudinal distribution housing to the printhead include fewer and fewer said ink holes.