| 摘要 |
<p>PURPOSE:To respective independently discriminate the propriety of erasing plural channels for sound recording by respectively independently providing erroneous erase preventing and detecting means corresponding to the plural channels for sound recording at one part in the enclosure of a tape cassette. CONSTITUTION:In the enclosure of a tape cassette 1, at one part on the side of the enclosure, a first erroneous erase preventing and detecting piece 2 for sound and a second erroneous erase preventing and detecting piece 3 for sound are slidably mounted so as to be vertically locked, and the depth of a hole provided on the enclosure surface of the tape cassette 1 can be adjusted by two steps. On the other hand, detection parts 4a and 4b of a detection switch 4 for preventing erroneous erase are fixed to a magnetic tape unit corresponding to a position, where those detection parts are inserted to the holes of the tape cassette 1, and by turning on/off this detection switch 4, the recording operation of a sound recording circuit is controlled. Thus, the propriety of erasing plural sounds can be easily discriminated for respective channels.</p> |
