Inkjet printhead with integral nozzle plate

Incremental printing of symbolic information – Ink jet – Ejector mechanism

Reexamination Certificate

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C347S054000, C347S065000

Reexamination Certificate

active

07401884

ABSTRACT:
An inkjet drop ejection apparatus comprising:a chamber with a side wall and a nozzle wall, the nozzle wall defining an ink ejection nozzle; and,an actuator for ejecting drops of ink through the nozzle;the chamber and actuator being fabricated by lithographic etching and deposition techniques; wherein,the nozzle wall and at least part of the side wall integrally formed by a single deposition process.Simultaneously depositing the chamber walls and nozzle plate removes the need to align and adhere a separate nozzle guard to the printhead. Using VLSI fabrication techniques provides a compact monolithic nozzle array at relatively low cost and high yield.

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