| 摘要 |
<p>PURPOSE:To prevent malfunction or damage of a mechanism by making the position of the back end of a cassette at the time of starting to pull-in the cassette become constant independent of the kind of cassettes when the cassette in different size are inserted. CONSTITUTION:When the small cassette 33 is inserted to a cassette holder 10 from a cassette inserting window 8 of an outside case member 9, the cassette 33 is never brought into contact with a cassette detecting lever 27 since the horizontal width of the cassette is narrow. Therefore, a switch 29 for detecting cassette size does not perform the changeover operation. The cassette 33 is further inserted, and at the time when the back end 33a of cassette is attained to the position almost coincident with that of the cassette inserting window 8, a lever 30 for detecting cassette insertion is operated for turning by the cassette holder 10 to changeover a switch 32 for detecting cassette insertion. At this time point, the insertion of the small cassette is discriminated. Next, when the large cassette 34 is inserted, the switch 29 is changed over by the lever 27, therefore, the insertion of the large cassette is detected.</p> |
