Printhead assembly with similar substrate and nozzle guard...

Details Printhead assembly with similar substrate and nozzle guard... Printhead assembly with similar substrate and nozzle guard...

2006-11-28

2006-11-28

Hsieh, Shih-Wen (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S047000

Reexamination Certificate

active

07140717

ABSTRACT:
A printhead assembly includes a substrate that defines a plurality of fluid inlet conduits. A plurality of nozzle assemblies is positioned on the substrate. Each nozzle assembly defines a nozzle chamber in fluid communication with a respective fluid inlet conduit and a nozzle opening from which fluid is ejected. A guard member is positioned on the substrate and is spaced from the nozzle assemblies. The guard member defines a plurality of apertures that are aligned with respective nozzle openings. The substrate and the guard member are of substantially the same material.

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