Magnetic information transfer method and apparatus thereof
OwnerNobuhide Matsuda, Takashi Utsumi +1inventors
InventorsNobuhide Matsuda, Takashi Utsumi, Masaki Kondo
Life of this patent
Estimating the term…
Abstract
A slave disk is held by a stage, and a holder holding a master disk is displaced to the side of the slave disk through use of a linear slider so that the master disk is in face-to-face contact with the slave disk. Then, vacuum suction is executed from a suction port for close contact of the stage to achieve close contact between the slave disk and the master disk. Under this close contact condition, a permanent magnet is rotated to transfer magnetic signals recorded on the master disk to the slave disk.
Claims9
A magnetic transfer method for performing magnetic transfer from a master disk having projections indicating information to be transferred to a slave disk with a center hole in a center thereof by placing the master disk and the slave disk in face-to-face close contact with each other,
- the method comprising:
- placing the master disk and the slave disk in face-to-face contact with each other;
- conducting vacuum suction from the slave disk or the master disk for achieving close contact between the master disk and the slave disk facing each other;
- magnetically transferring information recorded on the master disk to the slave disk;
- and
- detaching the master disk and the slave disk after the magnetic transfer is terminated.
A magnetic transfer apparatus for performing magnetic transfer from a master disk to a slave disk with a center hole in a center thereof by placing the master disk and the slave disk in face-to-face close contact with each other, comprising:
- a slave disk holding device for holding the slave disk;
- a vacuum suction device for conducting vacuum suction between the master disk and the slave disk;
- a master disk holding device for holding the master disk;
- a forward and backward driving device for conducting forward and backward driving of at least either the slave disk holding device or the master disk holding device in a direction of coming the master disk and the slave disk in contact with each other;
- and
- a magnetic transfer device for transferring magnetic signals recorded on the master disk to the slave disk.
Dependencies are inferred from the claim text.