Ink printing apparatus using ink surfactants

Details Ink printing apparatus using ink surfactants Ink printing apparatus using ink surfactants

1996-07-22

1998-03-10

Wong, Peter S.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 54, 347 55, 347 15, 346140R, G01D 1518, G01D 1516

Patent

active

057266930

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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patent: 5023625 (1991-06-01), Bares et al.

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