Magnetic recording medium having a surface with pores of specifi

Details Magnetic recording medium having a surface with pores of specifi Magnetic recording medium having a surface with pores of specifi

1989-04-13

1992-06-30

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of inorganic material

428695, 428900, 427130, G11B 0500

Patent

active

051262150

ABSTRACT:
A magnetic recording medium comprising a nonmagnetic support having formed thereon a magnetic layer containing ferromagnetic particles dispersed in a binder, wherein the surface of the magnetic layer has pores of (a) at most 50 .ANG. in the average value of pore inlet diameters measured by a nitrogen gas adsorption method and (b) at least 25 .ANG. in the half value width of the frequency distribution curve of the pore inlet diameters.

REFERENCES:
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patent: 4663209 (1987-05-01), Aonuma et al.
patent: 4678705 (1987-07-01), Huisman et al.
patent: 4759954 (1988-07-01), Kubota et al.
patent: 4792483 (1988-12-01), Miyake et al.
patent: 4895758 (1990-01-01), Sakemoto et al.
patent: 4911951 (1990-03-01), Ogawa et al.

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