Matsushita Electric Industrial Co., Ltd.

Shin-ichiro Kaneko

Hiroshi Shibata

Seishi Tomari

Takashi Kubara

Hirofumi Kama

Naoto Yoshida

An ink-jet head for injecting ink into a work piece, has an ink passage in which the ink is received, and a pair of electrodes in the ink passage for heating electrically and vaporizing thermally the ink to generate an ink-jet toward the work piece, wherein a crystal grain diameter of the electrodes is not less than 0.1 .mu.m, a total orientation deviation of (002) or (011) crystal orientation face of the electrodes with respect to a direction perpendicular to an electrode layer thickness direction is decreased, and/or a surface roughness of the electrodes is not less than 0.005 .mu.m, so that oxidation and corrosion of the electrodes are restrained.

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Fukuoka, Japan

Shin-ichiro Kaneko