Method for removing liquid in the gap of a printhead

Details Method for removing liquid in the gap of a printhead Method for removing liquid in the gap of a printhead

2007-02-20

2007-02-20

Hsieh, Shih-wen (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S022000, C347S024000, C347S027000, C347S023000

Reexamination Certificate

active

10942446

ABSTRACT:
A method for removing liquid in a gap of an ink jet printhead comprising a drop generator, with an outlet valve, orifice plate and charge plate, wherein a cross flush valve is additionally used to form a cross flush pressure in the drop generator, then actuators are used to vibrate the drop generator to a defined amplitude, then the outlet valve is closed to form a pressure spike in the drop generator then the pressure in the drop generator is lowered to a recommended operating pressure to establish a jet array and the system is operated until the gap is substantially free of liquid with dissolved residue.

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