Liquid ejection head

A liquid ejection head, comprising:

• a plurality of individual passages each comprising a nozzle;
• a plurality of supply liquid passages each communicating with an inlet of a corresponding one of the plurality of individual passages;
• a plurality of return liquid passages each communicating with an outlet of a corresponding one of the plurality of individual passages;
• a supply coupling liquid passage coupling the plurality of supply liquid passages to each other and communicating with an inlet of each of the plurality of supply liquid passages;
• and
• a return coupling liquid passage coupling the plurality of return liquid passages to each other and communicating with an outlet of each of the plurality of return liquid passages,
• wherein the plurality of supply liquid passages and the plurality of return liquid passages extend in an extending direction and are arranged in an arrangement direction intersecting the extending direction,
• wherein the supply coupling liquid passage and the return coupling liquid passage extend in the arrangement direction, are located on one side of the plurality of supply liquid passages and the plurality of return liquid passages in the extending direction, and comprise an overlapping portion at which the supply coupling liquid passage and the return coupling liquid passage at least partly overlap each other when viewed in an orthogonal direction orthogonal to each of the extending direction and the arrangement direction, and
• wherein a damper film is provided between the supply coupling liquid passage and the return coupling liquid passage in the orthogonal direction at at least a portion of the overlapping portion.