LIQUID EJECTION APPARATUS

A liquid ejection apparatus ejecting an aqueous ink and an aqueous reaction liquid containing a reactant that reacts with the aqueous ink to record an image on a record medium, wherein the liquid ejection apparatus includes an element substrate including: a plurality of individual channels having an ejection port configured to eject the liquid, a pressure chamber configured to supply the liquid to the ejection port, and an energy-generating element configured to generate energy to eject the liquid; an upstream channel configured to supply the liquid to the plurality of individual channels; and a downstream channel for outflow of the liquid from the plurality of individual channels, the ejection port has a protrusion protruding toward a center of the ejection port.