Magnetic disk medium

Details Magnetic disk medium Magnetic disk medium

2005-05-17

2005-05-17

Resan, Stevan A. (Department: 1773)

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

C428S336000, C428S690000, C428S216000

Reexamination Certificate

active

06893701

ABSTRACT:
A magnetic disk medium having on a support a magnetic layer containing hexagonal ferrite powder dispersed in a binder, with the support having a thickness of 20 μm to 80 μm and the magnetic disk medium having an inside diameter X of 2 mm to 10 mm, an outside diameter Y of 20 mm to 50 mm, an X/Y ratio satisfying the relation 0.05≦X/Y≦0.20 and a curl quantity of 1 mm or below, which is suitable for use in small-diameter portable computer equipment and video recorders, and besides, can attain a recording capacity of at least several hundred megabytes.

REFERENCES:
patent: 5935674 (1999-08-01), Saito et al.
patent: 10-21530 (1998-01-01), None

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