Ink jet head capable of reliably removing air bubbles from ink

Details Ink jet head capable of reliably removing air bubbles from ink Ink jet head capable of reliably removing air bubbles from ink

2005-10-18

2005-10-18

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

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

Reexamination Certificate

active

06955427

ABSTRACT:
To provide an ink jet head capable of performing proper image forming operations by easily removing air bubbles contained in ink. A manifold13, 14is formed with an ink supply channel41. A plurality of openings45are formed at one edge of the ink supply channel41. The openings45are fluidly connected to ink channels31. The openings45have a smaller dimension toward the ink channels31. During purging or flushing operations, an air bubble EB in the ink supply channel41is pulled toward the ink channels31while gradually changing it outer shape in the opening45. In this way, the air bubble is smoothly and easily pulled into the ink channel31, and ejected through a nozzle16a.

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