| 摘要 |
<p>PURPOSE:To realize a small and light-weight information recorder or reproducer, by adding a detecting means which detects the tension of a led-out medium to an adaptor for large cassette which contains a means that leads a medium out of a large cassette. CONSTITUTION:An adaptor is provided to a portable VTR to load a large cassette, and the video recording of broadcast is possible for a long time with use of a large cassette and by combining the adaptor with the VTR. When a large cassette is pushed into the adaptor and set there, the lead-out pins 36 and 37 provided within the cassette to load a tape move to the inside of a tape 10a. Thus the cassette is loaded completely. The tape is bent by a tape guide 153 as shown by a tape path 10b and while the pins 36 and 37 move to the positions 36' and 37' respectively. Then an arm 152 turns counterclockwise or clockwise in response to the degree of the tape tension in order to take off or apply more the band brakes. Thus the tension of the tape is kept constant.</p> |
