| 摘要 |
PURPOSE:To execute recording/reproduction by separating a luminance signal and a color signal easily and with a high accuracy, by forming a pair of magnetic heads of two pieces for recording a video signal by separating it into a luminance signal and a color signal, and forming head bases of two pieces of magnetic heads to the same shape. CONSTITUTION:A head gap of head chips 10a, 10b for a color signal corresponding to head chips 11a, 11b for a luminance signal coincides with an axial direction, and it is set so that no shift is generated in the peripheral direction, but it is necessary to execute with a high accuracy an adjustment of a projection quantity from the outside peripheral surface, an inclination (gate) in the axial direction, etc. of a rotary cylinder 1 of the head chip. That is to way, a head base 3a can move finely centering around a screw body 7a by a jig which is engaged to a notch 6a and rotated centering around a screw hole which is provided on a head supporting body 2 for screwing a screw 8a for fixing a head base 4a, therefore, the projection quantity of the head chip 11a can be adjusted easily. Also, a gate of the head can be adjusted by turning a set screw 5a, making the tip about on a head supporting body 2, and bending a head base 3a. |
