Liquid ejection head and liquid ejection apparatus

Abstract

A liquid ejection head including: an ejection port portion with an injection port configured to eject liquid in an ejection direction; a pressure chamber that includes therein an energy-generating element to eject the liquid from the ejection port; a supply channel configured to supply the liquid to the pressure chamber; a collecting channel configured to collect the liquid from the pressure chamber; and a pump configured to cause the liquid in the collecting channel to flow into the supply channel, wherein F(ratio) is 1.4 or less.