Memjet Technology Limited

Zamtec Limited

Lewis Matich

Kia Silverbrook

Simon Fielder

Gregory John McAvoy

Emma Rose Kerr

Rónán Pádraig Seán O'Reilly

A method of providing a printhead assembly having a hydrophilic ink pathway and a hydrophobic ink ejection face. The method includes the steps of: providing a printhead assembly comprising a printhead attached to an ink supply manifold, the printhead comprising a nozzle plate having a hydrophobic coating and a protective metal film disposed on the hydrophobic coating; treating surfaces of an ink pathway in the printhead assembly with a solution comprising an alkoxylated polyethyleneimine; drying the surfaces; and removing the protective metal film so as to reveal the hydrophobic coating.

Method of providing printhead assembly having complementary hydrophilic and hydrophobic surfaces

A method for hydrophilizing surfaces of a printhead assembly includes decontaminating the printhead assembly; plasma activating the surfaces of the printhead assembly; treating the surfaces of the printhead assembly with a treatment solution; drying the printhead assembly; baking the printhead assembly; and performing a print quality and electrical test on the printhead assembly. The step of decontaminating the printhead assembly is performed before the step of plasma activating the surfaces of the printhead assembly.

Method for hydrophilizing surfaces of a print head assembly

Growing community of inventors

Balmain, Australia

Lewis Matich