| 摘要 |
<p>PURPOSE:To attain positioning without the need of the adjustment of inclination of slant balls requiring troublesome works in use of tools, by providing a reference surface at a part of a hide holder and a positioning pin corresponding to this reference surface for a drum base. CONSTITUTION:A drum base 2 is provided with positioning pins 12a, 12b and reference surfaces 13a, 13b are provided for guide holders 6a, 6b accordingly. Tape guides 1a, 1b move long holes 3a, 3b toward the arrows Ca, Cb, pins 11a, 11b of the guide holders 6a, 6b contact stopper 10a, 10b, then a video tape recorded is selected to the video recording and reproduction state. In this state, the reference surfaces 13a, 13b are contacted with the pins 12a, 12b to set the slant of slant balls 9a,9b fixed to the holders 6a, 6b to angles Aa, Ab inevitably.</p> |
