Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Patent
1998-04-28
2000-01-25
Resan, Stevan A.
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
428141, 428328, 428329, 428336, 428694BR, 428694BS, 428900, 360135, B32B 302
Patent
active
060176059
ABSTRACT:
A magnetic recording medium is described, which comprises a support having thereon a magnetic layer mainly comprising a ferromagnetic powder dispersed in a binder, for a magnetic recording/reproduction system of reproducing recorded signals of from 0.15 to 2 G bit/inch.sup.2 of areal recording density with a magneto resistive head (an MR head), wherein the surface of the magnetic recording layer has not more than 100 protrusions having a height of 30 nm or more per 900 .mu..sup.2 measured using an atomic force microscope (AFM), the magnetization reversal volume of the magnetic layer is from 0.1.times.10.sup.-17 to 5.times.10.sup.-17 ml, and the coercive force of the magnetic layer is 2,000 Oe or more.
REFERENCES:
patent: 5512350 (1996-04-01), Ryoke et al.
patent: 5908683 (1999-06-01), Suzuki et al.
IEEE Transactions on Magnetics, vol. 26 No. 1, Jan. 1990, pp. 193-197.
Saito Shinji
Yamazaki Nobuo
Fuji Photo Film Co. , Ltd.
Resan Stevan A.
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