Harness, Dickey & Pierce, P.L.C.
Piezoelectric actuator and method of manufacture therefor, and ink jet head and ink jet type recording device
A piezoelectric actuator 21 has: a piezoelectric actuator part 22 made up of a common electrode 27, a piezoelectric element 29, and an individual electrode 33; an electrical interconnection joint part 43 formed on the individual electrode 33; an electrical interconnection 45 formed on the electrical interconnection joint part 43; a head block 47 fixed to a nozzle plate 39 through the electrical interconnection 45; and a PI tape 49 disposed within the head block 47. A closed space 57 is defined between the head block 47 and the nozzle plate 39. The closed space 57 is divided by the PI tape 49 into two sections. Of these two sections of the closed space 57, the one on the side of the head block 47 constitutes a first closed space 57a. A moisture absorbent 52 is sealed within the first closed space 57a. Relative humidity within the closed space 57 of the ink jet head 1 is not less than 0% nor more than 20%.
Matsushita Electric Industrial Co., Ltd.
B H B B B H B
B41J H01L B41J B41J B41J H01L B41J
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Takanori Kazuo Shogo Masaichiro Masakazu
Nakano Nishimura Matsubara Tatekawa Tanahashi