Liquid ejection head

A liquid ejection head comprising:

• a nozzle surface having a plurality of nozzles;
• a channel structure stacked on the nozzle surface in a stacking direction, the channel structure having a liquid ejection channel communicating with the nozzles;
• a supply channel structure formed of a material having a lower thermal conductivity than a material of the channel structure, the supply channel structure having a supply channel communicating with the liquid ejection channel,
• wherein the supply channel structure has a covering portion contacting at least a portion of a side end surface of the channel structure in a width direction orthogonal to the stacking direction, and
• wherein the supply channel structure has a main portion overlapping the plurality of nozzles in the stacking direction;
• a damper configured to attenuate remaining vibrations propagating from liquid flowing;
• and
• a holding frame holding the damper, the holding frame being formed of a material with a lower thermal conductivity than the material of the channel structure,
• wherein, when a side of the liquid ejection head with the nozzle surface faces downward and a side of the liquid ejection head opposite to the nozzle surface faces upward, the supply channel structure is located over the channel structure,
• wherein the damper is located at a lower surface of the channel structure thereby defining a portion of the liquid ejection channel, and
• wherein the covering portion of the supply channel structure extends from an upper end portion of the channel structure along the side end surface thereof toward a position where the damper is provided.