Ink jet head unit and printer incorporating the same

Details Ink jet head unit and printer incorporating the same Ink jet head unit and printer incorporating the same

2007-03-20

2007-03-20

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

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

Reexamination Certificate

active

10928736

ABSTRACT:
A head chip has a first face formed with nozzle orifices from which ink is ejected, and a second face formed with at least one ink inlet communicated with the nozzle orifices. An ink passage communicates the nozzle orifices with the ink supply source to supply ink to be ejected. A filter is disposed in the ink passage at an upstream side of the ink inlet. The filter has a first face directed to an upstream side of the ink passage. A cover member covers at least a part of the first face of the filter, the cover member being adapted to allow ink in the ink passage to pass through while preventing air bubbles contained in the ink from coming in contact with the first face of the filter.

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