Printhead assembly comprising inkjet printhead and nozzle guard

Details Printhead assembly comprising inkjet printhead and nozzle guard Printhead assembly comprising inkjet printhead and nozzle guard

2006-12-26

2006-12-26

Vo, Anh T. N. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S033000

Reexamination Certificate

active

07152943

ABSTRACT:
A printhead assembly comprising an inkjet printhead and a nozzle guard is provided. The nozzle guard minimizes damage to the nozzles and comprises a body having plurality of apertures defined therethrough; an exterior surface that, in use, faces the substrate, the exterior surface being configured for engagement with a wiper blade that sweeps the surface to remove residual matter; and a plurality of recesses defined in the exterior surface, each recess being individually associated with one of the apertures. The recesses prevent residual matter carried by the wiper blade from lodging within the apertures. The nozzle guard is positioned on the printhead such that it extends over the exterior of the nozzles and permits ink ejected from the nozzles to pass through the apertures and onto the substrate.

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