Metal working – Method of mechanical manufacture – Fluid pattern dispersing device making – e.g. – ink jet
Reexamination Certificate
2011-03-08
2011-03-08
Tugbang, A. Dexter (Department: 3729)
Metal working
Method of mechanical manufacture
Fluid pattern dispersing device making, e.g., ink jet
C029S025350, C347S044000, C347S045000
Reexamination Certificate
active
07900355
ABSTRACT:
A head main body includes a passage unit having nozzles and pressure chambers, and an actuator unit adhered to the passage unit to change the volume of the pressure chambers. On a piezoelectric sheet of the actuator unit, formed are not only individual electrodes corresponding to the respective pressure chambers, but also a land and a dummy land in a pair corresponding to each of the individual electrodes. The land is connected to the individual electrode, and the dummy land is spaced from the individual electrode. The land and the dummy land have substantially the same height from a surface of the piezoelectric sheet, which is higher than that of the individual electrodes. The individual electrodes are connected, through the land, to a cable member to supply a drive signal to the actuator unit.
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Angwin David P
Brother Kogyo Kabushiki Kaisha
Oliff & Berridg,e PLC
Tugbang A. Dexter
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