| 摘要 |
<p>PURPOSE:To adjust an X value accurately and easily by providing a fulcrum of rotation at about 90 deg. from a contact in the entry direction of a magnetic tape on an audio control head loading arm and fitting an audio control head fitting plate rotatably. CONSTITUTION:When stop screws 23a and 23b are loosened and an adjusting screw 22 is rotated and advanced, the audio control head fitting plate 25 rotates by +delta against the force of a torsion spring 21 and the X value increases by delta, thus making an adjustment in a case where the X value is less than a normal X value. A fitting shaft 13a as the fulcrum of rotation of the fitting plate 25 is provided at an angle theta+90 deg. in the entry direction of the magnetic tape 9 to an entrance-side tape guide member 11, so even when the fitting plate 25 rotates for the X value adjustment and the entrance-side tape guide member 11 shifts in position, the shift is nearly linear movement and the angle of the entry direction of the magnetic tape 9 is unchanged. Therefore, the tape attitude is maintained nearly without variation in the winding angle of the magnetic tape 9 on the 3rd slanting pin 10. Consequently, the X value is adjusted easily and accurately.</p> |
