Method for manufacturing an ink jet recording head having ink filter
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United States of America Patent
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Sep 15, 1998
Issued Date -
N/A
app pub date -
Nov 7, 1996
filing date -
Feb 20, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for manufacturing an ink jet recording head which includes a plurality of ejection outlets for ejecting ink; discrete ink passages communicating with respective ejection outlets; a common liquid passage communicating with the discrete ink passages for supplying ink thereto; a liquid chamber for supplying the ink to the common ink passages; and a filter. The filter includes plural projections between the common liquid passage and the liquid chamber, for preventing foreign matter from entering the discrete liquid passages. Adjacent projections define a liquid passing area having a size smaller than that of the ejection outlets.
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