Ink jet print head with electropolished diaphragm

Details Ink jet print head with electropolished diaphragm Ink jet print head with electropolished diaphragm

1991-06-14

1995-04-11

Hartary, Joseph W.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

2041291, B41J 2045

Patent

active

054063183

ABSTRACT:
The present invention provides an ink jet print head having an improved driver design and capable of extended and continuous periods of operation with substantially reduced rectified diffusion-induced printing quality degradation. In preferred ink jet print heads of the present invention, the ink-contacting portion of the surface of the diaphragm of a piezoelectric ceramic/diaphragm drive mechanism is electropolished. By electropolishing only a portion of one surface, the ink-contacting surface, of one ink jet print head component, rectified diffusion is greatly reduced.

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