The present invention, in contrast to the above described conventional uses of piezoelectric elements, imparts {TAIL ~ motion} in a controlled manner to prevent {HEAD ~ aliasing} as will be described in greater detail below 
The present invention , in contrast to the above described conventional uses of piezoelectric elements , imparts { TAIL ~ motion } in a controlled manner to prevent { HEAD ~ aliasing } as will be described in greater detail below
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH