Process for producing a magnetic recording medium using a patter

Details Process for producing a magnetic recording medium using a patter Process for producing a magnetic recording medium using a patter

1992-03-10

1994-12-13

Resan, Stevan A.

Coating processes

Magnetic base or coating

Magnetic coating

428694TS, 428694TR, 428900, 428928, 427131, G11B 500

Patent

active

053728432

ABSTRACT:
A magnetic recording medium comprising a substrate, a diffusion element layer formed on the substrate from a material to be diffused into a magnetic film by heating, a diffusion barrier formed in a desired pattern on the diffusion barrier, and the magnetic film formed on the pattern of the diffusion barrier and on other area than the area of the pattern, the magnetic film having a portion of reduced saturation magnetization in repetition in a direction perpendicular to a recording direction. The magnetic recording medium can be obtained by forming a diffusion element layer, a diffusion barrier in a desired pattern, and a magnetic film, in a stacked form on a substrate, followed by heating.

REFERENCES:
patent: 3420756 (1969-01-01), Terajima
patent: 3902930 (1975-09-01), Sata et al.
patent: 4403138 (1983-09-01), Battanel et al.
patent: 4833020 (1989-05-01), Shiroishi et al.
A. S. Hoadland "Recording Medium with Discrete Alternate Track of Differing Coercive Force" I.B.M. Tech. Discl. Bull Vol 20 No 7 Dec 1977.
C. H. Bajorek et al "Magnetically Discrete but Physically Continuous Recording Tracks" I.B.M. Tech Disl Bull. vol. 18 No 5 Oct 1975.

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