Ink jet head

Abstract

The present invention provides an ink jet head comprising a head substrate 1, a heat-generating resistor 3 and a pair of electrodes 4, which are attached on the head substrate 1, and a top plate 6 disposed above the head substrate 1, the ink jet head being capable of ejecting ink, with which the space between the head substrate 1 and the top plate 6 is filled, through an ink ejection opening by means of heat of the heat-generating resistor, wherein the heat-generating resistor is made of a silicon oxide material selected from the group consisting of (1) a material consisting of TaxSiOy (1.30≦x≦1.70 and 1.20≦y≦1.95), (2) a material consisting of NbxSiOy (1.4≦x≦1.9 and 1.4≦y≦1.9), (3) a TiC—SiO2 resistive material, a TiC content in the resistive material being set within a range from 55 to 90 mol %, and (4) a Ta—Ni—SiOx (1.2≦x≦2.0) resistive material, a Ta content in the resistive material being set within a range from 48 to 70 atomic %, a Ni content being set within a range from 0.1 to 2.0 atomic %. This ink jet head can record an image with less strain and uneven density at a high speed, and also has a high reliability.

Dependencies are inferred from the claim text.