Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

2005-01-19

2008-05-06

Chaney, Carol (Department: 1794)

Stock material or miscellaneous articles

Magnetic recording component or stock

Binder media

C428S844000, C428S847200, C428S482000

Reexamination Certificate

active

07368188

ABSTRACT:
A magnetic recording medium including a polymer support having thereon at least one magnetic layer containing a ferromagnetic metal powder having an average major axis length of from 20 to 100 nm or a ferromagnetic hexagonal ferrite powder having an average tabular diameter of from 5 to 40 nm and a binder, the polymer support having an intrinsic viscosity of from 0.47 to 0.51 dL/g, a Young's modulus in the machine direction of from 7.0 to 8.6 GPa, a Young's modulus in the transverse direction of from 5.4 to 8.0 GPa, and a breaking strength in the transverse direction of from 370 to 450 MPa.

REFERENCES:
patent: 6432503 (2002-08-01), Aonuma et al.
patent: 6521361 (2003-02-01), Ejiri et al.
patent: 6713155 (2004-03-01), Handa et al.
patent: 2003/0211362 (2003-11-01), Ohno
patent: 2003/0232217 (2003-12-01), Meguro et al.
patent: 1142936 (2000-10-01), None
patent: 8-45060 (1996-02-01), None
patent: 8-227517 (1996-09-01), None
patent: WO 00/79524 (2000-12-01), None
English Abstract JA 08-227517.
English Translation JA 08-227517.
English Abstract JA 08-045060.
English Translation JA 08-045060.

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