Method and apparatus for promoting the complete transfer of...

Details Method and apparatus for promoting the complete transfer of... Method and apparatus for promoting the complete transfer of...

2006-01-23

2008-12-02

Stephens, Juanita D (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S048000, C347S045000

Reexamination Certificate

active

07458661

ABSTRACT:
A printhead device for transferring liquid droplets from a nozzle includes a liquid source coupled to a nozzle via a microchannel. The nozzle is formed from an orifice having an inner circumferential surface, wherein at least a portion of the inner circumferential surface is serrated. Liquid droplets are transported from the source to the nozzle using a liquid droplet driver (e.g., employing a plurality of driving electrodes). Transfer of droplets to another surface can be accomplished by contacting a bulging droplet in the nozzle with a printing surface. The surface and/or nozzle are then moved relative to one another to effectuate complete transfer of the liquid drop from the nozzle.

REFERENCES:
patent: 4791436 (1988-12-01), Chan et al.
patent: 5387440 (1995-02-01), Takemoto et al.
patent: 6315397 (2001-11-01), Truninger et al.

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