Patent ID: 8070279

Claim:
A liquid ejection head comprising: a plurality of nozzles configured to eject liquid droplets; a plurality of pressurizing liquid chambers in fluid communication respectively with the nozzles; a liquid supply portion comprising a plurality of individual supply channels in fluid communication respectively with the pressurizing liquid chambers to supply a liquid to the pressurizing liquid chambers, and a fluid-communicating portion configured to keep the plurality of individual supply channels in fluid communication with one another; a filter portion positioned to face the individual supply channels of the liquid supply portion and configured to filter the liquid supplied to the pressurizing liquid chambers; and a flow channel member in which the pressurizing liquid chambers and the liquid supply portion are formed, the flow channel member comprising: a plurality of through grooves penetrating through the flow channel member in a direction of thickness thereof and including the pressurizing liquid chambers and the individual supply channels; and a recess extending in a direction in which the pressurizing liquid chambers are arrayed, the recess configured to keep portions of the plurality of through grooves in fluid communication with one another, the portions serving as the individual supply channels, wherein the portions of the through grooves, which serve as the individual supply channels, are open to a bottom of the recess and are positioned to face the filter portion.