Liquid jet recording head fabrication method
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United States of America Patent
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Aug 8, 1995
Grant Date -
N/A
app pub date -
Jun 9, 1993
filing date -
Jun 10, 1992
priority date (Note) -
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Abstract
There is disclosed a method for fabricating a liquid jet recording head having heat acting portions, communicating to orifices for liquid discharge, for applying heat energy to a liquid to form a bubble therein, electricity-heat converters for generating said heat energy, pairs of electrodes, and an upper protective layer, characterized in that the wet etching rate of electrode layer is higher on the upper portion in a direction of film thickness than on the lower portion.
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