Method for manufacturing liquid ejection head
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United States of America Patent
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Jun 6, 2017
Issued Date -
N/A
app pub date -
Sep 5, 2014
filing date -
Sep 9, 2013
priority date (Note) -
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Abstract
A method for manufacturing liquid ejection heads includes the steps of forming ejection port members on a substrate, the ejection port members each having a liquid channel and an ejection port for ejecting liquid through the channel, the liquid channel communicating with the substrate; forming supply ports passing through the substrate to supply liquid to the channels; and forming a separation groove in the substrate to separate the substrate for each liquid ejection head. The step of forming the ejection port members includes the step of hardening a material constituting the ejection port member by heat treatment. The step of forming the separation groove is performed before the step of hardening.
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