In a tape player in general, a tape cassette is set in position by a series of loading operations, namely, first pulling the cassette into the tape player and then dropping it in the play position, and is removed by a series of ejecting operations, namely, first lifting it above the play position and then bringing it to a removable position.
The series of loading and ejecting operations are performed by dropping or lifting a pack guide which carries the cassette and by moving back and forth a pack stopper which guides the cassette back and forth. In the prior art mechanims, the pack guide and the pack stopper are activated by driving an eject arm and an eject plate by means of a motor-driven cam. More specifically, when the eject arm is engaged and rotated by the cam, the eject plate linked to the eject arm moves back and forth. Responsive to the back and forth movement of the eject plate, the pack guide carrying the cassette is dropped or lifted by a cam of the eject plate, and the pack stopper connected to the eject arm via a resilient member moves back and forth and brings the cassette into the tape player or to the removable position.