Patent ID: 8348407

Claim:
A liquid ejection head comprising: a plurality of nozzles from which droplets of liquid are ejected; a plurality of separate chambers communicated with the plurality of nozzles; a common chamber from which liquid is supplied to the separate chambers; a plurality of inlet portions communicated with the corresponding separate chambers, through which liquid is supplied from the common chamber to the plurality of separate chambers; a filter unit disposed between the plurality of inlet portions and the common chamber to filter liquid in an area across the plurality of separate chambers in a first direction in which the plurality of nozzles is arrayed; and a plurality of ribs disposed in the filter unit at intervals corresponding in size to at least two of the separate chambers in the first direction to partition the filter unit, the plurality of inlet portions communicated in the first direction with each other in at least one portion of each of the plurality of inlet portions facing the filter unit.