Liquid ejection head and image forming apparatus including same

A liquid ejection head, comprising:

• a nozzle plate including plural nozzles to eject droplets of liquid;
• a channel plate including plural individual liquid chambers communicated with the nozzles and a liquid introduction portion communicated with the individual liquid chambers;
• a common-liquid-chamber member including a common liquid chamber to supply the liquid to the individual liquid chambers;
• and
• a deformable damper area forming a wall face of the common liquid chamber,
• wherein the liquid introduction portion has a passage area and a non-opposed area other than the passage area, the passage area having a passage communicated with the common liquid chamber, the non-opposed area not opposed to the common liquid chamber, and
• the channel plate has a recessed portion not opposed to the damper area in a region in which the non-opposed area of the liquid introduction portion is formed.

A liquid ejection head, comprising:

• a nozzle plate including plural nozzles to eject droplets of liquid;
• a channel plate including plural individual liquid chambers communicated with the nozzles and a liquid introduction portion communicated with the individual liquid chambers;
• a common-liquid-chamber member including a common liquid chamber to supply the liquid to the individual liquid chambers;
• and
• a deformable damper area forming a wall face of the common liquid chamber,
• wherein the liquid introduction portion has a passage area and a non-opposed area other than the passage area, the passage area having a passage communicated with the common liquid chamber, the non-opposed area not opposed to the common liquid chamber, and
• the channel plate has an opposed portion opposed to a portion of the damper area in a region in which the non-opposed area of the liquid introduction portion is formed,
• the opposed portion of the channel plate has a relief at a side facing the damper area to permit deformation of the damper area.