Harness, Dickey & Pierce, P.L.C.
Ink jet head and method for the manufacture thereof
In order to provide a miniaturized ink jet head having a piezoelectric actuator 21 by which ink in a pressure chamber 3 is emitted and to improve its productivity and reliability, a vibration plate 22 is made up of two layers having different Young's moduli, i.e., a layer 27 having a smaller Young's modulus and a layer 28 having a greater Young's modulus. Further, the Young's modulus of each of the layers 27 and 28 is set at values ranging from 50 GPa to 350 GPa and the total thickness of the vibration plate 22 is set at values ranging from 1 &mgr;m to 7 &mgr;m.
Matsushita Electric Industrial Co., Ltd.
B B B Y B B B B B B Y
B41J B41J B41J Y10T B41J B41J B41J B41J B41J B41J Y10T
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Isaku Osamu Kenji Koji
Kanno Watanabe Tomita Matsuo