Inkjet printhead with tuned firing chambers and multiple inlets

Details Inkjet printhead with tuned firing chambers and multiple inlets Inkjet printhead with tuned firing chambers and multiple inlets

1994-07-29

1997-09-09

Barlow, Jr., John E.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 94, B41J 205

Patent

active

056661436

ABSTRACT:
An inkjet printer printhead is coupled to an ink source and has a plurality of ink firing chambers dimensionally defined by a barrier layer disposed between a substrate and an orifice plate. Two ink feed channels are coupled to one ink firing chamber and are dimensionally defined, in part, by the barrier layer. One of these ink feed channels has a smoothly converging wide dimension inlet at the ink source and a narrow dimension outlet at the ink firing chamber. The other ink feed channel also has a converging wide dimension inlet at the ink source and a narrow dimension outlet at the ink firing chamber but has an "S" shaped wall contour to make it asymmetrical to the first ink feed channel. An island of the barrier layer separates one ink feed channel from the other ink feed channel serving the ink firing chamber. This island has an essentially flat wall surface disposed toward the ink firing chamber.

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McCabe and Smith, "Unit Operations Of Chemical Engineering", 3rd. Edition, McGraw Hill, 1976, pp. 110-111.

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