Invention Grant
US07938974B2 Method of fabricating printhead using metal film for protecting hydrophobic ink ejection face 有权
使用金属膜制造打印头以保护疏水性墨水喷射面的方法

Method of fabricating printhead using metal film for protecting hydrophobic ink ejection face
Abstract:
A method of fabricating a printhead having a hydrophobic ink ejection face, the method comprising the steps of: (a) providing a partially-fabricated printhead comprising a plurality of nozzle chambers and a nozzle plate having relatively hydrophilic nozzle surface, the nozzle surface at least partially defining the ink ejection face of the printhead; (b) defining a plurality of nozzle openings in the nozzle plate; (c) depositing a hydrophobic polymeric layer onto the nozzle surface; (d) depositing a protective metal film onto the polymeric layer; (e) subjecting the printhead to an oxidizing plasma; and (f) removing the protective metal film, thereby providing a printhead having a relatively hydrophobic ink ejection face. Step (b) may be performed immediately after any of steps (a), (c) or (d).
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