Ink jet print head with flow control contour

Details Ink jet print head with flow control contour Ink jet print head with flow control contour

1999-08-30

2000-10-17

Barlow, John

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 63, 347 92, B41J 205, B41J 219

Patent

active

06132034&

ABSTRACT:
An ink jet print head with a substrate defining an ink aperture. A two-elevation structure in an ink manifold acts to urge coalescing bubbles away from ink energizing elements. A number of ink energizing elements are formed on one major surface of the substrate by a thin film layer or layers that only partially cover the one major surface of the substrate so as to leave part of the one major surface uncovered. A barrier layer is connected to the upper surface of the thin film layer leaving a second major surface that is the top of the thin film layer and peripherally encloses an ink manifold. The barrier encompasses the ink aperture. An orifice plate is connected to the barrier layer, spaced apart from the substrate's major surface, enclosing the ink manifold. The plate defines a number of orifices, each associated with a respective ink-energizing element.

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patent: 5815185 (1998-09-01), Pietrzyk

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