Patent · US Active

Method of providing printhead assembly having complementary hydrophilic and hydrophobic surfaces

US8793873B2 · kind B2 · utility

1Cited by

5References

18Claims

0Family size

Assignee

Memjet Technology Limited · IE

Inventors

Simon Fielder · Sydney, AU
Lewis Matich · Sydney, AU
Kia Silverbrook · Sydney, AU
Gregory John McAvoy · Sydney, AU
Rónán Pádraig Seán O'Reilly · Dublin, IE
Emma Rose Kerr · Dublin, IE

Key dates

Filing date	Oct 18, 2010
Grant date	Aug 5, 2014
Priority date	—
Expiry date	Jan 9, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49401
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.