PRINTHEAD AND METHOD OF FABRICATING THE SAME

Disclosed is a printhead having at least one ink drop generator region, which includes an ink chamber, an orifice through which ink drops are ejected, and a heating element positioned below the ink chamber. The heating element includes a resistor defined therein and a nano-structured surface that is...

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Bibliographische Detailangaben
Hauptverfasser:	MARDILOVICH PETER, FARTASH ARJANG, MEYER NEAL WAYNE
Format:	Patent
Sprache:	eng
Schlagworte:	CORRECTION OF TYPOGRAPHICAL ERRORS i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PRINTING PUNCHING METAL SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	Disclosed is a printhead having at least one ink drop generator region, which includes an ink chamber, an orifice through which ink drops are ejected, and a heating element positioned below the ink chamber. The heating element includes a resistor defined therein and a nano-structured surface that is exposed to the ink fluid supplied to the ink chamber. The nano-structured surface takes the form of an array of nano-pillars. The printhead is fabricated by a method that includes: forming a heating element having an oxidizable metal layer as the uppermost layer; forming an aluminum-containing layer on the oxidizable metal layer; anodizing the aluminum-containing layer to form porous alumina; anodizing the oxidizable metal layer so as to partially fill the pores in the porous alumina with metal oxide material; and removing the porous alumina by selective etching to produce a nano-structured surface.