| 摘要 |
<p>PURPOSE:To prevent the damage of a tape by providing a moving tape control means which is interlocked with a loading means to stop contacting between the tape and a drum till the end of loading, and releases the stop in the loading end state. CONSTITUTION:Since the front end of a cam 21 is abutted on a roll 18 to pus a contact avoiding post 12b down against the tension of a torsion spring 20 according as an internal loading rig 13 is turned to advance in the direction of an arrow B, a tape 2 is not only stretched by guide posts 4b and 4a but also brought into contact with a drum 3 and is hooked around a guide roll 5b and is wound around the drum 3. In case of fast forwarding and rewinding, the internal loading ring 13 is turned in the direction opposite to the direction of the arrow B to drop the roll 18 to the bottom of the cam 21, and the contact avoiding post 12b is raised by the restoring force of the torsion spring 20 and cooperates with a contact avoiding post 12a to separate the tape 2 from the drum 3. Thus, the tape is fast forwarded and rewound quickly without damaging the tape.</p> |
