Magnetic transfer apparatus

Details Magnetic transfer apparatus Magnetic transfer apparatus

2005-03-15

2005-03-15

Sniezek, Andrew L. (Department: 2651)

Dynamic magnetic information storage or retrieval

Record copying

Contact transfer

C360S016000, C428S690000

Reexamination Certificate

active

06867935

ABSTRACT:
A magnetic transfer apparatus for magnetically transferring information represented by a pattern of a magnetic layer formed on a master information carrier to a slave medium includes a magnet unit which applies an initial DC magnetic field to a slave medium and a magnet unit which applies a transfer magnetic field to the slave medium and the master information carrier in the direction opposite to the direction of the initial-magnetization with the slave medium held in close contact with the master information carrier. The initial DC magnetic field and the transfer magnetic field are not larger than the diameter of an innermost recording track in the half-width of a curve representing an intensity distribution in the direction of a tangent of the innermost recording track.

REFERENCES:
patent: 6347016 (2002-02-01), Ishida et al.
patent: 6650490 (2003-11-01), Nishikawa
patent: 6794062 (2004-09-01), Tsubata et al.
patent: 20030113503 (2003-06-01), Nakamura et al.
patent: 20040080871 (2004-04-01), Usa et al.
patent: 63-183623 (1988-07-01), None
patent: 2001-14667 (2001-01-01), None

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