| 摘要 |
<p>A recording and/or reproducing apparatus having a movement mechanism for a disc cartridge (220, 221) including a cartridge holder (3) for loading a disc cartridge (220, 221) containing a magneto-optical disc (200) or an optical disc (201) in a main body (1) of the apparatus. The apparatus includes a head device (13) for recording or reproducing information signals on or from the disc (200, 201), a movement mechanism (700) for moving the disc (200, 201) from a first position enabling recording and/or reproduction of information signals by the head device (13) and for moving the disc (200, 201) between the first position and a second position overlying the first position for performing the disc exchange operation. The apparatus also includes a lock unit (115) for locking the movement unit at the first position and a control mechanism (338) for moving the head device (13) between a position proximate to the disc (200, 201) and an upper position spaced apart from the disc (200, 201). The apparatus further includes an engagement mechanism (94) moved by the control mechanism (338) for being engaged with the lock unit (115). The engagement mechanism (94) is engaged by the control mechanism (338) with the lock unit (115) and is moved between a position disengaged from the lock unit (115) by an ejecting operation and a position of being released from the position of being disengaged from the lock unit (115). When the head device (13) is at an upper position spaced apart from the recording medium (200, 201), the engagement mechanism (94) is positioned at the position of being engaged with the lock unit (115) and releases the lock of the movement mechanism (700) by the lock unit (115) at the first position. When the head device (13) is proximate to the recording medium (200, 201), the engagement mechanism (94) is at a lock release position by the control mechanism (338). There is provided a first detection switch (160) for detecting that the movement mechanism (700) for the disc cartridge (200, 201) is at the first position of enabling recording and/or reproduction of information signals on or from the disc (200, 201). Unless the first detection switch (160) is actuated, recording or reproduction of information signals on or from the recording medium (200, 201) by the head device (13) is inhibited. <IMAGE></p> |
