terminals respectively fig3 is a graph showing the characteristic of the bi morph leaf 11a in which abscissa represents the voltage applied across the electrodes 103 104 in volts the ordinate represents the displacement u00b1 u03b4h of the head chip 13a caused by the distortion of the bi morph leaf 11a by the bias applied thereto and t p shows one pitch length corresponding to one field of the recorded track on the tape t of an ordinary vtr respectively turning back to fig1 a when a video signal is recorded on the tape t by a recording head which could be the head 11a the vertical position of the head is maintained substantially constant and a control signal ctl pulse that can be correlated with the tape position at the beginning of each frame is recorded on the tape t as in the ordinary case when the video signal is reproduced the upper head drum 2 and the capstan 17 are driven or rotated by the same motor in this case however due to the sliding and friction of the tape t upon the tape transportation the rotational speed and the rotary phase of the head drum 2 do not always coincide with the longitudinal speed of the tape t as a result the head cannot correctly trace the recorded track on the tape t if it is possible to displace or move the vertical position of the head at least two times by one pitch length of video tracks the head can correctly trace out the tracks without controlling both the tape speed and the rotational speed of the head drum the relation between the signal reproducing heads and the recorded tracks will be now described with reference to fig4 when.