| 摘要 |
PURPOSE:To select a cassette easily by providing cassette loading detecting means for detecting the loading of cassettes and a means for selecting a cassette corresponding to output variation of each detecting means. CONSTITUTION:A cassette changeover key 3C, reed switch 6a (upper) for detecting upper-stage cassette loading, reed switch 6a (lower) for detecting lower- stage cassette loading, and reed switches 6b (upper), 6c (upper), 6b (lower), and 6c (lower) for detecting cassette sizes of an upper and a lower stage are provided. Further, FFs 7, 15, and 16, monostable multivibrators 8-10, OR circuits 11, 12, 19, and 20, AND circuits 13, 14, 17, 18, and 21-23, and NOT circuits 24- 26 are provided to select a cassette. |
