Manufacturing method of liquid ejection head, liquid ejection head, and inkjet printing apparatus
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United States of America Patent
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Feb 24, 2015
Grant Date -
Dec 5, 2013
app pub date -
May 29, 2013
filing date -
Jun 5, 2012
priority date (Note) -
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Abstract
In the case where a slit is provided in a projection portion of an outlet plate, patterning property of a slit can be improved, and a desired slit can be formed. The present invention is a manufacturing method of a liquid ejection head including a substrate; an ejection outlet plate; a channel; and the supply ports formed between the substrate and the ejection outlet plate by joining of the ejection outlet plate onto the substrate; and a projection portion having a slit at a position facing the supply port of the ejection outlet plate, the method including the steps of: forming a first member on the substrate; forming a mold material for forming the slit between first member on the substrate; forming a second member serving as the ejection outlet plate on the mold material; forming the projection portion by removing the mold material.
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