Printhead integrated circuit having an ink ejection member...

Details Printhead integrated circuit having an ink ejection member... Printhead integrated circuit having an ink ejection member...

2008-06-16

2009-12-01

Nguyen, Thinh H (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S040000

Reexamination Certificate

active

07625061

ABSTRACT:
A printhead integrated circuit (IC) for an inkjet printer. The printhead IC has a wafer substrate with drive circuitry and a plurality of nozzle arrangements located thereon. Each nozzle arrangement includes nozzle chamber structures defining a nozzle chamber and an ink ejection nozzle in fluid communication with said nozzle chamber, as well as an elongate actuator attached to the substrate for displacement towards and away from the substrate in response to actuating signals from the drive circuitry. Each arrangement also includes an ink ejection member attached to the actuator, the ejection member being positioned for acting on ink within the nozzle chamber to eject a drop of ink from the ink ejection nozzle. Each elongate actuator further includes an actuator arm of a laminated structure comprising a resiliently flexible inner layer, a conductive layer and a compensation layer, the inner layer being interposed between the conductive and compensation layers.

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