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US 6,439,689 B1Granted
Inkjet printhead with nozzle rim
AssigneeSilverbrook Research Pty Ltd
InventorKia Silverbrook
Life of this patent
Estimating the term…
Abstract
An inkjet printhead having a series of ink ejection nozzles each having a fist meniscus rim around which an ink meniscus normally forms. An extended ink flow prevention rim is provided spaced apart from the first meniscus rim and substantially encircling the first meniscus rim so as to prevent the flow of fluid across the surface of the inkjet printhead.
Claims6
An inkjet printhead which comprises
- a wafer substrate;
- a series of ink ejection nozzle arrangements for ejecting ink positioned on the wafer substrate, each of said nozzle arrangements having a nozzle that interconnects a nozzle chamber with an external atmosphere;
- a meniscus rim positioned about each nozzle and in which an ink meniscus forms, in use;
- and
- an ink flow prevention rim spaced outwardly from each said meniscus rim and extending to the wafer substrate to define a pit which extends towards the wafer substrate and substantially encircles each nozzle arrangement to prevent the flow of ink across the surface of said inkjet printhead.
2 more elements
Dependencies are inferred from the claim text.