Liquid ejection head and liquid ejection apparatus having overlapping regions

A liquid ejection head comprising:

• four or more head chips disposed along a first direction in a staggered manner, and
• a support member supporting the head chips, wherein
• the head chips are disposed to have overlapping regions where a part of a nozzle forming region of one head chip of adjacent head chips and a part of a nozzle forming region of other head chip overlap when viewed in a second direction that is perpendicular to the first direction,
• the overlapping regions include a first overlapping region, a second overlapping region that is farther away from a center position of a total nozzle forming region with respect to the first direction than the first overlapping region, and a third overlapping region that has a size smaller than the size of the first overlapping region, with respect to the first direction, the total nozzle forming region including all the nozzle forming regions of the head chips,
• the first overlapping region is larger than the second overlapping region with respect to the first direction,
• the second overlapping region is disposed between the first overlapping region and the third overlapping region, with respect to the first direction, and
• the support member has a notch between the second overlapping region and the third overlapping region.