Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Patent
1998-03-24
2000-03-14
Resan, Stevan A.
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
428328, 428336, 428694BA, 428694BS, G11B 582
Patent
active
060370300
ABSTRACT:
A disc-like magnetic recording medium is disclosed, which comprises a support having thereon a magnetic layer comprising a ferromagnetic powder and a binder as main components, wherein the ferromagnetic powder has an average long axis length of from 0.01 to 0.18 .mu.m, a crystallite size of from 50 to 180 .ANG., an acicular ratio of from 2 to 9, the magnetic layer has the coercive force Hc of from 1,700 to 3,000 Oe, the in-plane orientation ratio of 0.85 or more, and the squareness ratio in the vertical direction to the surface of the magnetic layer of 0.30 or less.
REFERENCES:
patent: 4923766 (1990-05-01), Hosoi et al.
patent: 5728442 (1998-03-01), Noguchi et al.
patent: 5770302 (1998-06-01), Masaki et al.
Nakamigawa Jun-ichi
Noguchi Hitoshi
Saito Shinji
Fuji Photo Film Co. , Ltd.
Resan Stevan A.
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