Ink jet print head with electropolished diaphragm
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United States of America Patent
Stats
-
Apr 11, 1995
Issued Date -
N/A
app pub date -
Jun 14, 1991
filing date -
Nov 1, 1989
priority date (Note) -
In Force
status (Latency Note)
Importance
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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