Method of forming hydrophobic coating layer on surface of nozzle plate for inkjet printhead

摘要

Provided is a method of forming a hydrophobic coating layer on a surface of a nozzle plate for an inkjet printhead. The method includes preparing a nozzle plate (120) formed with a plurality of nozzles (122); forming a metal layer (132) on a surface of the nozzle plate; forming a material layer (133) covering the metal layer; selectively etching the material layer to expose a portion of the metal layer formed on an outer surface of the nozzle plate; and forming the hydrophobic coating layer (134) made of a sulfur compound on the exposed portion of the metal layer by dipping the nozzle plate in a sulfur compound-containing solution. Therefore, the hydrophobic coating layer is selectively and uniformly formed only on the outer surface of the nozzle plate, thereby enhancing the ejection performance of ink droplets through the nozzle. <IMAGE>