Printhead integrated circuit with planar actuators

Details Printhead integrated circuit with planar actuators Printhead integrated circuit with planar actuators

2005-12-12

2008-10-07

Do, An H (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S065000

Reexamination Certificate

active

07431429

ABSTRACT:
A printhead integrated circuit for an inkjet printhead that includes a wafer substrate that defines a plurality of ink inlet channels. Drive circuitry is positioned on the wafer substrate. A plurality of nozzle chamber structures is positioned on the wafer substrate. Each nozzle chamber structure defines a nozzle chamber in fluid communication with a respective ink inlet channel and an ink ejection port aligned with the respective ink inlet channel. A plurality of planar actuators is positioned in respective nozzle chambers to overlie respective ink inlet channels. Each actuator is connected to the drive circuitry to be displaceable towards and away from the ink ejection port on receipt of an electrical signal from the drive circuitry to eject ink from the ink ejection port.

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