| 摘要 |
The head drum is used for a video camera integrating a video cassette tape recorder and a video camera. The diameter of a rotational body included in the head drum is so reduced that the size and weight of the movie can be minimized. The head drum comprises six heads (12,12',12",13,13',13") equidistantly positioned by 60 degree on a circumferential face of the rotational body (11). The three heads' (12,12',12") azimuth angle is plus 6 degrees, the other heads' (12,12',12") angle being minus 6 degrees. The rotational number of the body (11) is 50 rev/sec. The contact angle between the heads and the video tape is 300 degrees.
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