Printhead structure and method for producing the same
摘要
A high-durability printhead for an ink cartridge printing system. The printhead includes a substrate having ink ejectors (e.g. resistors) thereon and an orifice plate positioned above the substrate. The orifice plate (which preferably involves a non-metallic polymer film) has a top surface, bottom surface and a plurality of openings therethrough. To improve the durability of the orifice plate, a protective coating is applied to the top surface and/or the bottom surface of the plate. Representative coatings involve dielectric compositions (including diamond-like carbon) or at least one layer of metal. This approach improves the abrasion and deformation resistance of the plate and avoids "ruffling" and "dimpling" problems.
申请公布号
US6155675(A)
申请公布日期
2000.12.05
申请号
US19970921678
申请日期
1997.08.28
申请人
HEWLETT-PACKARD COMPANY
发明人
NICE, LEE VAN;HEPPELL, GERALD E.;MEYER, NEAL W.;MICHAEL, DONALD L.;BAUGHMAN, KIT;TROUNG, THACH G.;YANG, RUI;DAVID, MOSES M.;WHITE, JAMES R.