Coating processes – Magnetic base or coating – Magnetic coating
Reexamination Certificate
2011-03-22
2011-03-22
Meeks, Timothy H (Department: 1712)
Coating processes
Magnetic base or coating
Magnetic coating
C428S826000
Reexamination Certificate
active
07910159
ABSTRACT:
A radial magnetic field reset apparatus including a housing having a cavity with a soft magnet rod disposed at its center and a permanent magnet disposed around the cavity. The cavity and thickness of the soft magnet rod are sized to permit a cassette of disks to be inserted into the housing with the soft magnet rod disposed within the inner diameter holes of the disks contained in the cassette. The soft magnet rod at the center of the housing attracts the magnetic field generated by the permanent magnet, which results in a substantially uniform, radial magnetic field inside the housing.
REFERENCES:
patent: 5121258 (1992-06-01), Chi et al.
patent: 5366815 (1994-11-01), Araki et al.
patent: 5589262 (1996-12-01), Kiuchi et al.
patent: 5815342 (1998-09-01), Akiyama et al.
patent: 5942342 (1999-08-01), Hikosaka et al.
patent: 5959824 (1999-09-01), Schultz et al.
patent: 6270885 (2001-08-01), Hokkyo et al.
patent: 6531202 (2003-03-01), Litvinov et al.
patent: 6548194 (2003-04-01), Hikosaka et al.
patent: 6641935 (2003-11-01), Li et al.
patent: 6660357 (2003-12-01), Litvinov et al.
patent: 6723457 (2004-04-01), Tanahashi et al.
patent: 6754054 (2004-06-01), Seigler et al.
patent: 6777113 (2004-08-01), Trindade et al.
patent: 7081303 (2006-07-01), Yasui et al.
patent: 7105239 (2006-09-01), Oikawa et al.
patent: 7153596 (2006-12-01), Tanahashi et al.
patent: 7217467 (2007-05-01), Arai et al.
patent: 7588842 (2009-09-01), Abarra et al.
patent: 2001/0038932 (2001-11-01), Uwazumi et al.
patent: 2002/0028357 (2002-03-01), Shukh et al.
patent: 2002/0086185 (2002-07-01), Yasui et al.
patent: 2002/0136930 (2002-09-01), Oikawa et al.
patent: 2003/0022023 (2003-01-01), Carey et al.
patent: 2003/0138671 (2003-07-01), Oikawa et al.
patent: 2004/0233565 (2004-11-01), Arai et al.
patent: 2004/0247945 (2004-12-01), Chen et al.
patent: 0675484 (1995-03-01), None
patent: 2001155321 (2001-06-01), None
patent: 2003162807 (2003-06-01), None
Yihong Wu, “Antiferromagnetically coupled hard/Ru/soft layers and their applications in spin valves”, Applied Physics Letters, vol. 80, No. 23, Jun. 10, 2002, pp. 4413-4415.
Michael A. Seigler, “Use of a permanent magnet in the synthetic antiferromagnet of a spin-valve”, Journal of Applied Physics, vol. 91, No. 4, Feb. 15, 2002, pp. 2176-2179.
S. Takenoiri et al., “Exchange-Coupled IrMn/CoZrNb Soft Underlayers for Perpendicular Recording Media”, IEEE Transactions on Magnetics, vol. 38, No. 5, Sep. 2002, pp. 1991-1993.
Kiwamu Tanahashi et al., “Exchange-biased CoTaZr soft underlayer for perpendicular recording”, Journal of Applied Physics, vol. 93, No. 10, May 15, 2003, pp. 8161-8163.
B.R. Acharya et al., “Anti-Parallel Coupled Soft Under Layers for High-Density Perpendicular Recording”, IEEE Transactions on Magnetics, vol. 40, No. 4, Jul. 2004, pp. 2383-2385.
S.C. Byeon et al., “Synthetic Antiferromagnetic Soft Underlayers for Perpendicular Recording Media”, IEEE Transactions on Magnetics, vol. 40, No. 4, Jul. 2004, pp. 2386-2388.
Toshio Ando et al., “Triple-Layer Perpendicular Recording Media for High SN Ratio and Signal Stability”, IEEE Transactions on Magnetics, vol. 33, No. 5, Sep. 1997, pp. 2983-2985.
Manfred E. Schabes et al., “Micromagnetic Modeling of Soft Underlayer Magnetization Processes and Fields in Perpendicular Magnetic Recording”, IEEE Transactions on Magnetics, vol. 38, No. 4, 1670, Jul. 2002.
M. Mallary et al., One Terabit per Square Inch Perpendicular Recording Concept Design, IEEE Transactions on Magnetics, vol. 38, No. 4, 1719, Jul. 2002.
H. Muraoka et al., Low Inductance and High Efficiency Single-Pole Writing Head for Perpendicular Double Layer Recording Media, IEEE Transactions on Magnetics, vol. 35, No. 2, 643, Mar. 1999.
S. Tanahashi et al., “A Design of Soft Magnetic Backlayer for Double-layered Perpendicular Magnetic Recording Medium”, Journal of Magnetic Society in Japan, vol. 23 No. S2, 1999.
Jung et al., “FeTaN/IrMn Exchange-Coupled Multilayer Films as Soft Underlayers for Perpendicular Media”, IEEE Transactions on Magnetics, vol. 37, No. 4, 2294, Jul. 2001.
Dimitri Litvinov et al., Recording Layer Influence on the Dynamics of a Soft Underlayer, IEEE Transactions on magnetics, vol. 38, No. 5, pp. 1994-1996, Sep. 2002.
Hitachi Metals America, Ltd., Materials Mag!c, 1994, 2004, 5 pages.
Morcos, Tony, “The Straight Attraction”, Part One, Jun. 2000, Motion Control, pp. 29-33.
Ando, Toshio, Nishihara, Toshikazu, “Exchange-Coupled CoZrNb/CoSm Underlayer for Perpendicular Recording Media”, IEEE Transactions on Magnetics, vol. 37, No. 4, Jul. 2001, pp. 1228-1233.
Tanahashi, Kiwamu et al., “Reduction of spike noise in perpendicular recording media by using MnIr antiferromagnetic films”, Perpendicular Recording I, Journal of Applied Physics, vol. 91, No. 10, May 15, 2002, pp. 8049-8051.
Watanabe, S., et al., “Recording Performance of Double-Layered Perpendicular Recording Media With an Antiferromagnetic Layer”, IEEE Transactions on Magnetics, vol. 39, No. 5, Sep. 2003, pp. 2288-2290.
Jiang et al., Recording Performance Characteristics of Granular Perpendicular Media, IEEE Transactions on magnetics, vol. 41, No. 2, 587, Feb. 2005.
Eslami Tabassom Tadayyon
Meeks Timothy H
WD Media, Inc.
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