MAGNETIC TAPE CASSETTE CASING WITH CLOSURE LID FOR TAPE-ACCESS OPENING

摘要

A magnetic tape cassette casing has recesses in a front face, which also defines a tape-access opening, so disposed and aligned as to accommodate passage of actuator pins serving to retract a pivotable lid over the tape-access opening. The lid is designed to cover the opening when the cassette is not in use to protect the tape from contaminants. The actuator pin or pins are part of a tape record/play-back system and displace the lid away from the tape-access opening when the cassette is inserted into the tape system. The recesses are located opposite the actuator pins, which may be anywhere along the front face of the cassette casing outside of the working range of a tape read or record head. Thus the recesses allow the diameter of the cylindrical actuator pins to be much larger than the thickness of the pivotable lid.