发明名称 |
Printhead and method of fabricating the same |
摘要 |
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. |
申请公布号 |
US8388112(B2) |
申请公布日期 |
2013.03.05 |
申请号 |
US200913148601 |
申请日期 |
2009.02.24 |
申请人 |
MARDILOVICH PETER;MEYER NEAL WAYNE;FARTASH ARJANG;HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
MARDILOVICH PETER;MEYER NEAL WAYNE;FARTASH ARJANG |
分类号 |
B41J2/05;B21D53/76 |
主分类号 |
B41J2/05 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|