Magnetic recording medium and process for manufacturing same

Details Magnetic recording medium and process for manufacturing same Magnetic recording medium and process for manufacturing same

1985-08-30

1987-03-17

Robinson, Ellis P.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

427128, 252 6254, 428404, 428694, 428522, 428521, 428523, 428900, G11B 570

Patent

active

046507175

ABSTRACT:
A magnetic recording medium includes a magnetic layer which consists of a magnetic powder, and also an abrasive where necessary, dispersed in a binder, the magnetic powder or both the powder and the abrasive being coated, by adsorption, with a polycarboxylic acid copolymer. In manufacturing the medium, the copolymer is thoroughly mixed with the magnetic powder, and where necessary with the abrasive too, and the resulting mixture is further mixed with the binder.

REFERENCES:
patent: 4407901 (1983-10-01), Miyatsuka
patent: 4454282 (1984-06-01), Bradshaw
patent: 4550054 (1985-10-01), Yamauchi
patent: 4562117 (1985-12-01), Kikukawa
patent: 4578313 (1986-03-01), Ito
patent: 4578314 (1986-03-01), Ohta
patent: 4582759 (1986-04-01), Ota
patent: 4584243 (1986-04-01), Kadokura

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