Information recording and reproducing apparatus having higher drive pulse frequency during seeking operation than during following operation

A driving method of an information recording and reproducing apparatus having an electromechanical transducer, a driving member fixed to one end of the electromechanical transducer, a moving member frictionally coupled with the driving member, and a drive circuit for driving the electromechanical transducer, the driving method comprising the steps of:

• supplying a drive pulse to the electromechanical transducer so as to generate expansion and contraction displacement vibrations at different speeds, and allowing a recording and reproducing head to track an information recording track formed on a recording medium by the use of a drive mechanism for relatively moving the driving member and the moving member to each other as at the time of seeking;
• and
• driving the electromechanical transducer as at the time of following by using drive pulse frequencies which are different from at the time of seeking.

A driving method of an information recording and reproducing apparatus having an electromechanical transducer, a driving member fixed to one end of the electromechanical transducer, a moving member frictionally coupled with the driving member, and a drive circuit for driving the electromechanical transducer, the driving method comprising the steps of:

• supplying a drive pulse to the electromechanical transducer so as to generate expansion and contraction displacement vibrations at different speeds, and allowing a recording and reproducing head to track an information recording track formed on a recording medium by the use of a drive mechanism for relatively moving the driving member and the moving member to each other as at the time of seeking;
• and
• driving the electromechanical transducer in such a manner that the drive pulse frequency at the time of seeking is lower than a frequency up to that time from at least one preceding track immediately before the completion of seeking.

A driving method of an information recording and reproducing apparatus having an electromechanical transducer, a driving member fixed to one end of the electromechanical transducer, a moving member frictionally coupled with the driving member, and a drive circuit for driving the electromechanical transducer, the driving method comprising the steps of:

• supplying a drive pulse to the electromechanical transducer so as to generate expansion and contraction displacement vibrations at different speeds, and allowing a recording and reproducing head to track an information recording track formed on a recording medium by the use of a drive mechanism for relatively moving the driving member and the moving member to each other as at the time of following;
• and
• varying the drive pulse frequency at the time of following according to the moving speed of the recording and reproducing head at the time of seeking.