Ink jet printhead that includes tilt-compensating ink...

Details Ink jet printhead that includes tilt-compensating ink... Ink jet printhead that includes tilt-compensating ink...

2006-02-07

2006-02-07

Gordon, Raquel (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

06994425

ABSTRACT:
An ink jet printhead includes a substrate. A plurality of micro-electromechanical nozzle arrangements is positioned on the substrate. Each nozzle arrangement includes a nozzle chamber defining structure positioned on the substrate. The structure has a fixed portion that is fast with the substrate and a movable portion that is displaceable with respect to the substrate and that defines an ink ejection port. The movable portion and fixed portion together define a nozzle chamber and the movable portion is displaceable towards and away from the substrate to reduce and subsequently increase a volume of the nozzle chamber so that ink is ejected from the ink ejection port. An elongate actuator is anchored to the substrate at one end and operatively engaged with the movable portion at an opposite end. The elongate actuator is bent relative to the substrate on receipt of an electrical signal to displace the movable portion with respect to the fixed portion. The ink ejection port is shaped so that tilting of the movable portion results in the ejection of a drop of ink in a direction substantially at right angles to the substrate.

REFERENCES:
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patent: 6299289 (2001-10-01), Silverbrook
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patent: 2002/0075347 (2002-06-01), Sharma et al.
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patent: 096758 (2001-04-01), None
patent: 2001096758 (2001-04-01), None
patent: WO 99/03680 (1999-01-01), None
patent: WO 99/03680 (1999-01-01), None

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