Magnetic recording head and method for high coercivity...

Dynamic magnetic information storage or retrieval – Head – Core

Reexamination Certificate

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Reexamination Certificate

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07492550

ABSTRACT:
In methods and arrangements for concentrating stray magnetic fields, a pair of permanent magnets is employed in combination with a magnetic flux circuit, the permanent magnets in the pair having respective magnetizations that are oriented oppositely to each other. The permanent magnets produce a stray magnetic field that adds to a magnetic field produced by the magnetic flux circuit.

REFERENCES:
patent: 2428449 (1947-10-01), Camras
patent: 2774935 (1956-12-01), Rademakers et al.
patent: 4649449 (1987-03-01), Sawada et al.
patent: 4656547 (1987-04-01), Kumasaka et al.
patent: 4682256 (1987-07-01), Ayabe
patent: 4953048 (1990-08-01), Kameyama et al.
patent: 4972284 (1990-11-01), Smith et al.
patent: 4987508 (1991-01-01), Smith
patent: 5121274 (1992-06-01), Matsumi
patent: 5416410 (1995-05-01), Kastler
patent: 5576914 (1996-11-01), Rottmayer et al.
patent: 5883763 (1999-03-01), Yuan et al.
patent: 6072670 (2000-06-01), Furuichi et al.
patent: 2003/0111614 (2003-06-01), Tanaka
patent: 38 21 284 (1989-12-01), None
patent: 61-269204 (1986-11-01), None
patent: 04-167207 (1992-06-01), None
“New Structured Planar Write Head for 100 Gb/in2and Beyond,” Kanai et al., IEEE Trans. on Magnetics, vol. 38, No. 5, Sep. 2002, pp. 2210-2212.
“Design Optimization of Planar-Type Write Head for High-Density Magnetic Recording,” Kim et al., IEEE Trans. on Magnetics, vol. 38, No. 5, Sep. 2002, pp. 2213-2215.
“Disk Recording Beyond 100 Gb/in.2: Hybrid Recording? (Invited),” Ruigrok et al., J. of App. Physics, vol. 87, No. 9, May 1, 2000, pp. 5398-5403.
“New Magnetic Recording Method Using Laser Assisted Read/Write Technologies,” Katayama et al., Proc. of Magneto-Optical Recording Int. Symp. '99, J. Magn. Soc. Jpn., vol. 23, Supplement No. S1, (1991) pp. 233-236.
“High Density Thermomagnetic Recording on Flux Detectable RE-TM Media,” Nemoto et al., Proc. of Magneto-Optical Recording Int. Symp. '99, J. Magn. Soc. Jpn., vol. 23, Supplement No. S1, (1991) pp. 229-232.

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