METHOD AND APPARATUS FOR FORMING SERVO PATTERNS ON A MAGNETIC-RECORDING DISK,申请号US20090504530-传众专利搜索

METHOD AND APPARATUS FOR FORMING SERVO PATTERNS ON A MAGNETIC-RECORDING DISK

申请公布号：US2011069409(A1)

申请号：US20090504530

申请日期：2009.07.16

申请公布日期：2011.03.24

申请人：

ZHU XUCHU;TAKASE MAKOTO;OZAKI TOMOO;HEI WEE

发明人：ZHU XUCHU;TAKASE MAKOTO;OZAKI TOMOO;HEI WEE

分类号：G11B21/02

主分类号：G11B21/02

摘要：A method for forming servo patterns on a magnetic-recording disk. The method includes moving a magnetic-recording head in an opposite direction to a pattern development direction, when there is a faulty servo pattern. The method also includes positioning a write element of the magnetic recording head on a track of the faulty servo pattern and forming a reserve servo pattern at a different circumferential location from that of the faulty servo pattern. The method includes moving the magnetic-recording head in the pattern development direction. The method further includes positioning the read element on the track of the faulty servo pattern and forming a new servo pattern in the pattern development direction at the circumferential location of the faulty servo pattern on a track disposed between the track of the faulty servo pattern and an outside diameter of the magnetic-recording disk, based on data read from the reserve servo pattern.