Dynamic magnetic information storage or retrieval – Record copying – Contact transfer
Reexamination Certificate
2005-09-27
2005-09-27
Hudspeth, David (Department: 2651)
Dynamic magnetic information storage or retrieval
Record copying
Contact transfer
C360S015000, C360S016000
Reexamination Certificate
active
06950254
ABSTRACT:
A magnetic transfer apparatus is utilized to establish magnetization on the surface of a magnetic disk. A support mechanism supports the magnetic disk in the magnetic transfer apparatus. A magnetizing mechanism is designed to get opposed to the magnetic disk held by the support mechanism. The magnetizing mechanism applies a magnetic field of variable intensity in response to a change of position in the radial direction of the magnetic disk. The magnetic transfer apparatus enables establishment of a magnetic field of an appropriate intensity at any positions in the radial direction of the magnetic disk. Magnetization of a constant intensity can be established over the surface of the magnetic disk irrespective of a position in the radial direction of the magnetic disk. The magnetic transfer apparatus alone serves to establish a servo pattern of a clear magnetization on the magnetic disk.
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Hirahara Takao
Komoriya Hitoshi
Nakamura Yutaka
Suzuki Hiroyuki
Fujitsu Limited
Greer Burns & Crain Ltd.
Hudspeth David
Mercedes Dismery
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