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  • Patent number: 4999827
    Abstract: A recording and/or reproducing apparatus for a tape type optical recording medium has a transparent guide on which guide tracks are precisely formed. A scanning beam is controlled so as to scan along the guide tracks and is converged on the recording surface of the tape type recording medium. The accuracy of the recording tracks on the tape is equivalent to that of the guide tracks. In this way, recording tracks can be precisely formed on the tape witout the step required in the prior art methods of pre-forming guide tracks on the recording medium.
    Type: Grant
    Filed: December 7, 1988
    Date of Patent: March 12, 1991
    Assignee: Sony Corporation
    Inventor: Senri Miyaoka