FIELD: machine building.
SUBSTANCE: fluid ejection head includes a plurality of ejection elements, each of which has an ejection port for fluid ejection, energy generation element for generating energy to be used for fluid ejection from ejection port, liquid chamber for storing liquid to be supplied to ejection port, and a heater, and a main substrate supporting multiple ejection elements located thereon and having a common flow channel for liquid supply into multiple chambers for liquid.
EFFECT: common flow channel communicates with chambers for liquid by corresponding branch ports, each of branch ports is provided with a recessed part on its side upstream, when viewed in direction of fluid flow flowing through common flow channel.
8 cl, 13 dwg
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