RECORDING AND REPRODUCING DEVICE FOR MAGNETO-OPTICAL CARD

摘要

A recording and reproducing device for a magnetooptical card is revealed, which comprises an optical head for irradiating a magneto-optical recording medium of an magneto-optical card taken into the device with laser beam, a magnet field generator for applying a biased magnetic field to said magneto-optical recording medium and an optical system manipulating mechanism for the optical system of the above-mentioned optical head for varying the spot irradiated by the laser beam, wherein the optical head is fixed to the main frame of the device, the magneto-optical card is supported where it is irradiated by the laser beam emitted from the optical head, this magneto-optical card is moved horizontally in a plane parallel to the surface of the magneto-optical card for rough searching and then a part or the whole of the magnetic field generator is moved to come into contact with the magneto-optical card to stop the vibration of the magneto-optical card and then the spot to be irradiated by the laser beam is varied by means of the optical system of the optical head for access to the magneto-optical card to be done thereby. 31