| 摘要 |
<p>PURPOSE:To prevent effectively a medium from being left unreplaced by instructing the replacement of a recording medium based on the outputs of a storage circuit of recording medium replacing information and of a recording medium loading detection means. CONSTITUTION:An H level signal from a timer control circuit 5 in which a memory 8 for recording medium replacement information setting whether or not the recording medium is to be replaced corresponding to the recording time is incorporated is fed to an alarm buzzer control circuit 6 and when a tape loading detector 4 is in the on-state, an alarm buzzer 7 is raised to urge the replacement of a cassette tape 2 into a tape 3. On the other hand, when the device 4 is in the off-state, it is discriminated that the tape 3 is loaded and the buzzer 7 is not raised. Thus, the necessity of the replacement of the magnetic tape is recognized by energizing the buzzer 7 so as to prevent effectively a tape from being left unreplaced.</p> |
