Appeal No. 2000-0166
Application No. 07/809,042
comprising at least a plurality of window portions and a thin
closure plate for closing the window portions which is unitarily
connected with the spacer plate. The window portions and the
closure plate form pressurizing rooms. The film-type chip also
includes a plurality of piezo-electric/electrostrictive working
portions each of which includes a laminate of a lower electrode,
a piezo-electric/electrostrictive layer, and an upper electrode,
each working portion being disposed at a closure portion of each
window on the outer window of the surface of the closure plate,
wherein all the working portions are disposed in a single plane
(see Figure 1 and 3 of the disclosure). A positioning pin hole
(52) is disposed in or near the center of gravity of the window-
disposed pattern, and is separated from the pressurizing rooms
and extends in a direction perpendicular to the plane. This
configuration of the pin hole near the center of the plates
gives a product that can be readily used in ink-jet printers and
the like, wherein one may be assured that there is a proper
correspondence between the orifices in the piezo-
electric/electrostrictive film type chip and the ink-jet
nozzles. Accordingly, one may be assured that the device
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Last modified: November 3, 2007