Dynamic magnetic information storage or retrieval – Record copying – Contact transfer
Reexamination Certificate
2005-02-22
2005-02-22
Tran, Sinh (Department: 2651)
Dynamic magnetic information storage or retrieval
Record copying
Contact transfer
C360S016000, C360S015000
Reexamination Certificate
active
06859339
ABSTRACT:
The master information recording apparatus 100 includes a master information carrier, a master information carrier facing member, and a magnetic field applying member. A ferromagnetic thin film pattern formed on the surface of the master information carrier includes not less than two kinds of different patterns each having a different pattern angle showing an angle with respect to the direction of the relative movement between a magnetic head and a rotating magnetic recording medium. The magnetic field applying unit applies a magnetic field along the direction, which is perpendicular to the direction shown by an angle that is smaller than the pattern angle of the maximum pattern and larger than the minimum pattern angle of the pattern among the not less than two kinds of patterns.
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Yamaguchi, T., 1996, “Head-Positioning Servo Technology for Magnetic Disk Drives”, Journal of the Magnetics Society, vol. 20, No. 3, pp 771-776.
Ban Yasuaki
Hamada Taizou
Miyata Keizo
Sakaguchi Masaya
Taniguchi Kouji
Colon Rocio
Matsushita Electric - Industrial Co., Ltd.
Merchant & Gould P.C.
Tran Sinh
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