| CPC B41J 2/1433 (2013.01) [B41J 2/16538 (2013.01); B41J 2/14072 (2013.01); B41J 2002/14411 (2013.01); B41J 2002/14443 (2013.01)] | 13 Claims |
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1. A liquid ejection head comprising:
a channel member including a liquid channel;
an ejection substrate disposed on a bottom surface of a recess disposed in the channel member, the ejection substrate including a nozzle row having a plurality of nozzles communicating with the liquid channel, the nozzles being arranged in a first direction; and
a sealing member having a thermosetting resin filled in a predetermined space within a space defined by a side surface of the recess, the bottom surface of the recess, and a side surface of the ejection substrate, and the predetermined space being located upstream of the ejection substrate with respect to a second direction intersecting with the first direction, wherein
the sealing member includes:
a first sealing portion having a first resin located near the bottom surface within the predetermined space; and
a second sealing portion having a second resin located near an ejection surface of the ejection substrate within the predetermined space, the ejection surface being a surface provided with the nozzles,
a coefficient of linear expansion of the first resin is less than a coefficient of linear expansion of the second resin, and
a specific gravity of the first resin is greater than a specific gravity of the second resin.
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