Patent ID: 7219983

Claim:
A liquid ejection head that has a metal chamber formation plate in which groove-shaped recesses to serve as pressure generation chambers are arrayed and a communication hole is formed at one end of each of the groove-shaped recesses so as to penetrate through the chamber formation plate in a thickness direction, a metal nozzle plate in which nozzle orifices are formed at positions corresponding to the respective communication holes, and a metal sealing plate that closes openings of the groove-shaped recesses, and in which the sealing plate is joined to a groove-shaped-recess-side surface of the chamber formation plate and the nozzle plate is joined to an opposite surface of the chamber formation plate, wherein: an end portion, in a longitudinal direction, of each of the groove-shaped recesses is formed with a slant portion and a formed surface that is continuous with the slant portion has an inclination angle that is different from an inclination angle of the slant portion.