Magnetic recording medium and the production thereof

Details Magnetic recording medium and the production thereof Magnetic recording medium and the production thereof

1994-12-12

1996-12-17

Resan, Stevan A.

Coating processes

Magnetic base or coating

Magnetic coating

427129, 427130, 427251, 4272555, 427548, 427576, 427599, 2041922, G11B 585

Patent

active

055851398

ABSTRACT:
The magnetic recording medium consists essentially of a polymeric substrate, a coherent, magnetic thin metal film applied to the surface of the substrate by a PVD method and, if required, a protective layer formed on the thin metal film. In order to achieve a large residual induction component in the plane of the film, in particular high residual induction in the transverse direction, the thin metal film contains a noble gas or noble gas mixture, preferably argon. During the coating of the polymeric substrate with the magnetic metal or with the magnetic alloy, the noble gas is fed directly and preferably tangentially to the substrate surface at a specific noble gas flow of from 1.0.multidot.10.sup.4 to 6.0.multidot.10.sup.4. In the plane of the thin metal film, the ratio of residual induction in the longitudinal direction to that in the transverse direction is from about 0.9 to about 1.8.

REFERENCES:
patent: 4645690 (1987-02-01), Murakami et al.
patent: 4663193 (1987-05-01), Endo et al.
patent: 4743348 (1988-05-01), Ando et al.
patent: 4846948 (1989-07-01), Saito et al.
patent: 4888211 (1989-12-01), Oka et al.
patent: 5073449 (1991-12-01), Niimi et al.
patent: 5290590 (1994-03-01), Richter et al.
patent: 5352501 (1994-10-01), Miyamoto et al.

Affiliated with

Also associated with

Rating

Magnetic recording medium and the production thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic recording medium and the production thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording medium and the production thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1989527