Apparatus comprising a lubricant-coated magnetic disc and a magn

Details Apparatus comprising a lubricant-coated magnetic disc and a magn Apparatus comprising a lubricant-coated magnetic disc and a magn

1984-04-27

1986-04-15

Robinson, Ellis P.

Dynamic magnetic information storage or retrieval

Record medium

Disk

427128, 427131, 427132, 428329, 428414, 428446, 428447, 428694, 428695, 428900, 428422, G11B 572

Patent

active

045831459

ABSTRACT:
The magnetic disc comprises a magnetizable layer (1) to which an adhesion promoting layer (4) and thereto a lubricant film (5) are applied. Onto the substrate of the magnetic head (2) an adhesion reducing layer (9) is deposited. The apparatus can also show only one adhesion-influencing layer. The layers (4) and (9) are formed by the reaction of a sililating agent with reactive groups on the surface of the magnetizable layer (1), or of the substrate of the magnetic head (2), respectively. The sililating agents used differ in their terminal groups of which one category produce van der Waals bonds to the lubricant molecules, and the other is chemically indifferent relative to the lubricant molecules.
The two layers (4) and (9) are made e.g. by the spin-coating of a solution of the sililating agent, and subsequent drying.
The apparatus ensures a homogeneous coating of the magnetizable layer (1) with lubricant, and it prevents the pick-up of lubricant by the substrate of the magnetic head (2).

REFERENCES:
patent: 4069360 (1978-01-01), Yanagisawa
patent: 4152487 (1979-05-01), Yanagisawa
patent: 4307156 (1981-12-01), Yanagisawa
patent: 4327139 (1982-04-01), Schaefer
patent: 4380558 (1983-04-01), Yanagisawa
patent: 4404247 (1983-09-01), Burguette
patent: 4434210 (1984-02-01), Nakajima
patent: 4526836 (1985-07-01), Mukai
patent: 4529659 (1985-07-01), Hoshino

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