Print engine with air-cleaned printhead

Incremental printing of symbolic information – Ink jet – Ejector mechanism

Reexamination Certificate

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Reexamination Certificate

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07134739

ABSTRACT:
A print engine includes a stepper motor that advances print media upon demand and simultaneously drives an air pump. A molding provides a receptacle that receives an impeller of the air pump, an air inlet pin that couples with an air filter located on a print cartridge and an air conduit that couples the output of the air pump to a print head assembly. In use, the air pump operates to direct air across a print head of the print head assembly thereby inhibiting accumulation of foreign particles about the print head.

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