Magnetic head device with slidable and adjustable magnetic head

A magneto-optical recording and reproducing apparatus for recording data on a magneto-optical disk through magnetic field modulation, comprising:

• a magnetic head device which includes:
• coil support means having a hollow tubular portion;
• a single coil provided outside the hollow tubular portion of said coil support means;
• magnetic means slidably provided within the hollow tubular portion of said coil support means;
• and
• elastic support means for supporting said magnetic means so as to place it in a stand-by position where said magnetic means and the magneto-optical disk do not contact with one another by an elastic force exerted on said magnetic means in a direction moving away from the magneto-optical disk;
• and
• control means, including memory means for temporarily storing the recording data, for generating an electromagnetic force by supplying an excitation current to said single coil that the moves said magnetic means toward the magneto-optical disk in a direction opposite to the elastic force exerted by said elastic support means so as to come in contact with the magneto-optical disk when starting a recording operation, and after the magneto-optical disk has reached a desired rotation speed, said control means supplying a recording signal current to said single coil to record data read out from said memory means.

A magneto-optical recording and reproducing apparatus for recording data on a magneto-optical disk through magnetic field modulation, comprising:

• a magnetic head device which includes:
• coil support means having a hollow tubular portion;
• a single coil provided outside the hollow tubular portion of said coil support means;
• magnetic means slidably provided within the hollow tubular portion of said coil support means;
• and elastic support means for supporting said magnetic head means so as to place it in a stand-by position where said magnetic means and the magneto-optical
• disk do not contact with one another by an elastic force exerted on said magnetic means in a direction moving away from the magneto-optical disk;
• an optical pickup for raising a temperature of a recording portion of the magneto-optical disk by projecting a laser beam onto the magneto-optical disk;
• and
• control means, including memory means for temporarily storing the recording data, for generating an electromagnetic force by supplying thereto an excitation current to said single coil that then moves said magnetic means toward the magneto-optical disk in a direction opposite to the elastic force exerted by said elastic support means so as to come in contact with the magneto-optical disk when starting a recording operation, said control means being arranged so as to supply to said single coil a recording signal current corresponding to the recording data read out from said memory means when the magneto-optical disk has reached a desired rotation speed, and also arranged so as to raise the temperature of the recording portion above its Curie temperature.