| 摘要 |
<p>PURPOSE:To obtain a miniaturized and thinned cassette by constituting the titled detector so that the foremost end part of an erroneous erasing prevention detecting piece can be inserted/pulled out in/from a detection hole and is connected with a leaf switch. CONSTITUTION:A hole detection part 3a of the erroneous erasing prevention detection piece 3 held at a supporting point 3c can be freely inserted into the detection hole 1a of a cassette 1. By loading the cassette, a tape pressing spring 4 is allowed to retreat, and the detection piece 3 is released from the energization. If the erroneous erasing prevention piece 1b is not broken, the detection part 3a is brought into contact with the piece 1b turning on the leaf switch 5, and the equipment enters the sound recording state. If the piece 1a is broken, the piece 3 is inserted into the hole 1a turning off the switch 5, and the sound recording it made unable state. Accordingly, the necessary space is only a space X for the rotation of the detection piece 3, hence the miniaturized and thinned cassette can be obtained.</p> |
