Printhead integrated circuit having suspended heater elements

Details Printhead integrated circuit having suspended heater elements Printhead integrated circuit having suspended heater elements

2007-02-15

2008-12-30

Stephens, Juanita D (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S062000, C347S063000

Reexamination Certificate

active

07469995

ABSTRACT:
An inkjet printhead integrated circuit includes a multi-layer substrate that defines a plurality of ink inlet passages and incorporates drive circuitry. Side walls extend from the substrate. A nozzle plate is positioned on the side walls and, together with the side walls, defines a plurality of nozzle chambers in fluid communication with respective ink inlet passages and nozzles in fluid communication with respective nozzle chambers. At least one heater element is suspended in each nozzle chamber and is connected to the drive circuitry to be heated on receipt of an electrical signal from the drive circuitry to form a gas bubble in ink in the nozzle chamber so that a drop of ink is ejected from the nozzle chamber.

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