Magnetic recording medium with magnetic powder in lower magnetic

Details Magnetic recording medium with magnetic powder in lower magnetic Magnetic recording medium with magnetic powder in lower magnetic

1995-12-27

1998-01-06

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428402, 428694B, 428694BH, 428694BB, 428694BM, 428694BA, 428900, G11B 566, G11B 570

Patent

active

057052689

ABSTRACT:
A magnetic recording medium comprising a nonmagnetic support having formed thereon a plurality of magnetic layers including a top magnetic layer and an intermediate magnetic layer adjacent to the top magnetic layer, wherein the intermediate magnetic layer contains soft magnetic powder, the soft magnetic powder having, in its projective image, an average longer diameter <L> and a standard deviation of the longer diameter .DELTA.L satisfying the relationship represented by formula (1), and an average shorter diameter <W> and a standard deviation of the shorter diameter .DELTA.W satisfying the relationship represented by formula (2):

REFERENCES:
patent: 5458948 (1995-10-01), Yanagita et al.
patent: 5510168 (1996-04-01), Mori et al.
"Kogaku Sosetsu No. 48, Chobiryushi-Kagakuto Oyo", by Gakkai Shuppan Center, 1985.
"Funtai Ryudo Sokutei Ho", by Yokendo K.K, 1970.

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