Ink jet head and ink jet apparatus on which the ink jet head is mounted
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United States of America Patent
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Jul 21, 1998
Grant Date -
N/A
app pub date -
Jun 28, 1995
filing date -
Jun 30, 1994
priority date (Note) -
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status (Latency Note)
Importance
Abstract
An ink jet head has a substrate on which ejection energy generating elements are provided, and a ceiling plate having a plurality of grooves for forming ink passages. The ceiling plate is pressed against the substrate by a pressing member, i.e., a spring. To improve the ejection performance of the ink jet head, the contact portion of the ceiling plate pressed by the pressing member is divided into a plurality of portions.
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