Patent ID: 8672433

Claim:
A liquid ejection head, comprising: a head unit provided with a plurality of nozzles which eject liquid; and an intermediate unit provided with a fixing section to which a plurality of the head units are fixed, wherein the intermediate unit is installed in such a manner that intermediate units can be replaced independently, the intermediate unit has a structure in which portions of the nozzles of two head units that are mutually adjacent in a second direction perpendicular to a first direction are mutually overlapped in the first direction, and positions of two head units that are mutually adjacent in the second direction are not overlapped in the second direction, and in a joint section where portions of nozzles of head units that are mutually adjacent in the second direction are overlapped, a relationship between a total number of nozzles N A included in a joint section between the head units belonging to a same intermediate unit and a total number of nozzles N B included in a joint section between the intermediate units satisfies: N A <N B .