Magnetic recording medium containing particles with a core...

Details Magnetic recording medium containing particles with a core... Magnetic recording medium containing particles with a core...

2007-07-03

2007-07-03

Bernatz, Kevin M. (Department: 1773)

Stock material or miscellaneous articles

Magnetic recording component or stock

Binder media

C428S842900

Reexamination Certificate

active

10489735

ABSTRACT:
A magnetic recording medium comprising a nonmagnetic support and a magnetic layer formed on the support and containing a magnetic powder and a binder, wherein said magnetic powder comprises substantially spherical or ellipsoidal particles and at least one element selected from the group consisting of rare earth elements, silicon and aluminum, and has a Fe16N2phase, an average particle size of 5 to 30 nm and an axis ratio (a ratio of a major axis to a minor axis) of 1 to 2. This magnetic recording medium achieves a high output and has excellent short wavelength recording properties, since it uses a magnetic powder having a very small particle size and has a very high coercive force and a saturation magnetization suitable for high density recording.

REFERENCES:
patent: 3904448 (1975-09-01), Takahashi et al.
patent: 4020236 (1977-04-01), Aonuma et al.
patent: 4324177 (1982-04-01), Tsuji et al.
patent: 4451535 (1984-05-01), Pingaud et al.
patent: 4643942 (1987-02-01), Ohtsubo
patent: 4952444 (1990-08-01), Kawamata et al.
patent: 5156922 (1992-10-01), Mishima et al.
patent: 5252380 (1993-10-01), Nakazumi et al.
patent: 5380905 (1995-01-01), Haidos et al.
patent: 5494722 (1996-02-01), Oka et al.
patent: 5496607 (1996-03-01), Inaba et al.
patent: 5518804 (1996-05-01), Mizuno et al.
patent: 5637390 (1997-06-01), Isobe et al.
patent: 5645917 (1997-07-01), Ejiri et al.
patent: 5935674 (1999-08-01), Saito et al.
patent: 6071608 (2000-06-01), Yoshida et al.
patent: 6307700 (2001-10-01), Takayama et al.
patent: 6319485 (2001-11-01), Nagatomi et al.
patent: 6372338 (2002-04-01), Jeffers et al.
patent: 6517934 (2003-02-01), Kishimoto
patent: 6534168 (2003-03-01), Naoe et al.
patent: 6607807 (2003-08-01), Zinbo et al.
patent: 6780531 (2004-08-01), Tani et al.
patent: 6964811 (2005-11-01), Kishimoto et al.
patent: 2003/0194582 (2003-10-01), Ishikawa et al.
patent: 2004/0089564 (2004-05-01), Kuse et al.
patent: 2004/0247859 (2004-12-01), Sasaki et al.
patent: 2005/0276999 (2005-12-01), Kuse et al.
patent: 2006/0008645 (2006-01-01), Kishimoto et al.
patent: 69326124 (1994-06-01), None
patent: 0602533 (1994-06-01), None
patent: 1 071 102 (2001-01-01), None
patent: 52-5720 (1977-02-01), None
patent: 55-86103 (1980-06-01), None
patent: 64-001297 (1980-10-01), None
patent: 57-183629 (1982-11-01), None
patent: 2001-110164 (1985-04-01), None
patent: 60-130103 (1985-07-01), None
patent: 60-157719 (1985-08-01), None
patent: 60-204862 (1985-10-01), None
patent: 07-060504 (1987-09-01), None
patent: 63-187418 (1988-08-01), None
patent: 63-191315 (1988-08-01), None
patent: 03-049026 (1991-03-01), None
patent: 3-97203 (1991-04-01), None
patent: 3-101102 (1991-04-01), None
patent: 4-19815 (1992-01-01), None
patent: 04-248120 (1992-09-01), None
patent: 04-318321 (1992-09-01), None
patent: 05-073883 (1993-03-01), None
patent: 05090018 (1993-04-01), None
patent: 05-217148 (1993-08-01), None
patent: 5-234064 (1993-09-01), None
patent: 05-274644 (1993-10-01), None
patent: 05-298653 (1993-11-01), None
patent: 6-25702 (1994-02-01), None
patent: 6-36265 (1994-02-01), None
patent: 6-139553 (1994-05-01), None
patent: 10-083906 (1998-03-01), None
patent: 11-126327 (1999-05-01), None
patent: 11-126328 (1999-05-01), None
patent: 11-213384 (1999-08-01), None
patent: 11-238225 (1999-08-01), None
patent: 11-297034 (1999-10-01), None
patent: 11-339254 (1999-10-01), None
patent: 11-340023 (1999-12-01), None
patent: 2000-30238 (2000-01-01), None
patent: 2000-040217 (2000-02-01), None
patent: 2000-040218 (2000-02-01), None
patent: 2000-277311 (2000-10-01), None
patent: 2000-293836 (2000-10-01), None
patent: 2000-315312 (2000-11-01), None
patent: 2001-043525 (2001-02-01), None
patent: 2001-67649 (2001-03-01), None
patent: 2001-81506 (2001-03-01), None
patent: 2001-148115 (2001-05-01), None
patent: 2001-176715 (2001-06-01), None
patent: 2001-181754 (2001-07-01), None
patent: 2001-273620 (2001-10-01), None
patent: 2001-273626 (2001-10-01), None
patent: 2001-325720 (2001-11-01), None
patent: 2001-338418 (2001-12-01), None
patent: 2002-050029 (2002-02-01), None
patent: 2002-56518 (2002-02-01), None
patent: 2002-288817 (2002-10-01), None
patent: 2003-073705 (2003-03-01), None
patent: WO 00/48210 (2000-08-01), None
Machine Translation of JP 2000-277311 A.
Derwent Abstract Translation of WO 2003/079332 A1 and AU 2003/211248 A1 (Derwent Acc. No. 2003-748694).
Nagatomi et al., Powder and Powder Metallurgy, vol. 46, No. 2, pp. 151-155, (1999).
Hattori et al., Trans. of the Mag. Soc. of Japan, vol. 25, pp. 927-930, (2001).
English language machine translation of JP-10-083906 (having a publication date of Mar. 31, 1998).

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