Patent attributes
Disclose is a liquid droplet ejection head comprising;a piezoelectric actuator using a piezoelectric porcelain composition containing no lead and having low temperature dependence of piezoelectric constant, Specifically disclosed is a droplet ejection head characterized by comprising a piezoelectric actuator using a piezoelectric porcelain composition containing a solid solution of a main component represent by the Formula (1) below and a sub-component represented by the Formula (2) below which is added in an amount of less than 1 mol % relative to the total amount of the solid solution.{LiX(K1-YNaY)1-X}(Nb1-Z-WTaZSbW)O3, Formula (1)wherein x, y, z and W are within the ranges of 0≦x≦0.2, 0≦y≦1, 0<z≦0.4, and 0<w≦0.2, respectively.ABO3, Formula (2)wherein A represents Bi, and B represents at least any one of Fe, In, and Sc.
