Magnetic recording medium having a plurality of magnetic layers

Details Magnetic recording medium having a plurality of magnetic layers Magnetic recording medium having a plurality of magnetic layers

1991-06-24

1992-11-10

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

4284259, 428694, 427128, G11B 500

Patent

active

051621460

ABSTRACT:
A magnetic recording medium is disclosed which is improved in the durability thereof. The recording medium has a support and plurality of magnetic layers formed thereon, which layers contain a ferromagnetic powder and binder. A bending stiffness of the medium is 150 to 450 mg and a difference in the bending stiffness between the medium and the medium without its uppermost magnetic layer is not more than 20 mg per 1 .mu.m of thickness of the uppermost layer.

REFERENCES:
patent: 4693934 (1987-09-01), Nishimatsu et al.
patent: 4780366 (1988-10-01), Nishimatsu et al.
patent: 4857388 (1989-08-01), Ogawa et al.
patent: 5055351 (1991-10-01), Fujimoto et al.
patent: 5066534 (1991-11-01), Goto et al.

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