Ink jet with thin nozzle wall

Details Ink jet with thin nozzle wall Ink jet with thin nozzle wall

2006-04-04

2006-04-04

Gordon, Raquel Yvette (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07021745

ABSTRACT:
An ink jet nozzle assembly for an ink jet printer includes a nozzle chamber having an ink inlet communicating with an ink reservoir and a nozzle through which ink from the chamber can be ejected onto a page. The chamber includes a fixed portion and a movable portion configured for relative movement in an ejection phase and alternate relative movement in a refill phase. The movable portion includes a number of thermal actuator petal devices arranged around a central stem. The petal devices undergo bending upon heating to effect periodically the relative movement. The inlet is positioned and dimensioned relative to the nozzle such that ink is ejected preferentially from the chamber through the nozzle in droplet form during the ejection phase, and ink is alternately drawn preferentially into the chamber from the reservoir through the inlet during the refill phase.

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