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Disk drive servo writing using stylus to sense vibration between an actuator arm and a servo writer push-arm

  • US 7,221,532 B1
  • Filed: 11/21/2005
  • Issued: 05/22/2007
  • Est. Priority Date: 05/06/2005
  • Status: Expired due to Fees
First Claim
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1. A method of making a disk drive, wherein the disk drive comprises a data storage disk, an actuator arm, and a head connected to the actuator arm, and the disk drive is connected to a servo writer that comprises a push-arm configured to move the actuator arm radially relative to the disk, the method comprising:

  • moving the push-arm of the servo writer a defined distance to push the actuator arm and position the head at a defined radial location on the disk;

    writing servo fields through the head along an arc at the defined radial location on the disk; and

    generating an electrical vibration signal with a stylus sensor connected to the push-arm and having a stylus member that contacts and is biased against the actuator arm when the push-arm contacts the actuator arm, wherein the electrical vibration signal is indicative of vibration between the stylus member and the push-arm.

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