Ink printing apparatus using ink surfactants
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United States of America Patent
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-
Mar 10, 1998
Grant Date -
N/A
app pub date -
Jul 22, 1996
filing date -
Jul 22, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A liquid ink, drop-on-demand pagewidth printhead including a semiconductor substrate, a plurality of drop-emitter nozzles fabricated on the substrate; an ink supply manifold coupled to the nozzles; pressure element for subjecting ink in the manifold to a pressure above ambient pressure; a drop selection device for selectively addressing predetermined nozzles, and drop separation device to transfer ink selected drops from selected nozzles to a print region. A surface tension reducing agent for each nozzle is provided from a supply separate from the ink and integrated into the printhead. An increase in ink drop protrusion from the nozzle surface differentiates selected drops from non-selected drops.
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Cited Art Landscape
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