Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1984-10-16

1986-01-28

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

360134, 360135, 360136, 427 44, 427131, 427132, 428143, 428147, 428215, 428216, 428323, 428328, 428329, 4284259, 428694, 428695, 428900, G11B 572

Patent

active

045670838

ABSTRACT:
A magnetic recording medium including a magnetic layer formed on a plastic base and having perpendicular magnetic anisotropy suited for perpendicular magnetization, has a back coating formed on the rear side of the base opposite the magnetic side. The back coating is a thermoset coating cured from a thermosetting composition or a radiation-cured coating cured from radiation-curable composition containing at least one component having at least one acrylic, maleic, or allylic double bond. The back coating has an asperity in the range of 0.04 to 0.6 .mu.m. By suitably selecting the asperity the running quality and output profile are improved.

REFERENCES:
patent: 4328935 (1982-05-01), Steel
patent: 4367261 (1983-01-01), Miyoshi
patent: 4419406 (1983-12-01), Isobe
patent: 4427738 (1984-01-01), Fujiyama
patent: 4442171 (1984-04-01), Sato
patent: 4443514 (1984-04-01), Yamamoto
patent: 4450199 (1984-05-01), Tadokoro
patent: 4451531 (1984-05-01), Isobe
patent: 4452863 (1984-06-01), Takizawa
patent: 4465737 (1984-08-01), Miyatuka

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