CASSETTE DATA DETECTING APPARATUS OF SYSTEM FOR MOUNTING A PLURALITY OF CASSETTES

摘要

One end portion of a lug detecting lever or cassette detecting lever (701) is arranged at the position of a safety lug of a cassette loaded on a tray unit (100) or at the position of the cassette. The pivotal position of the other end portion of this detecting lever (701) is varied in accordance with the presence/absence of a safety lug or a cassette. During insertion of the tray unit (100) into a housing (10), a shutter mechanism (720)is rendered operative or inoperative in accordance with the pivotal position of said detecting lever (701). The shutter mechanism (720) is associated with a tape end detecting element (730). Upon receiving a detection signal from this tape end detecting element (730), a controller (804) can determine the presence/absence of a safety lug or a cassette.