| 摘要 |
<p>PURPOSE:To enhance safety of a recording carrier and shorten the time spent in unloading or loading by providing a means which reduces the moving speed of a loading means. CONSTITUTION:When an unloading command signal (high-level signal) is applied to an unloading command signal input terminal in case of unloading, a motor 3 is rotated in the direction of unloading to perform unloading. Here, since the output of an AND gate AG is in the low level until a rotation range detecting switch 4 is turned on, a transistor TR Trf is turned off, and consequently, the motor 3 is rotated in a relatively high speed. However, when the rotation range detecting switch 4 is turned on by a cam 2a of a loading ring 2, the output of the AND gate AG goes to the high level, and therefore, the TR Trf is turned on to short-circuit both ends of diodes D1 and D2, and the base potential of a TR Tre becomes a potential due to only a diode D3, namely, a lower potential to reduce the current flowed to the TR Trs, and consequently, the motor 3 is decelerated.</p> |
