Method and apparatus for burnishing magnetic disks

Abrading – Abrading process – Side face of disk

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Details

451 59, 451296, 451303, 451307, B24B 2112

Patent

active

054315921

ABSTRACT:
While a magnetic disk is being rotated, compressed air is jetted to corresponding positions on the two surfaces of the magnetic disk. An abrasive tape, which has tension in its longitudinal direction, is interposed between at least either one of the two surfaces of the magnetic disk and the compressed air jetted thereto such that the compressed air may now be jetted to the abrasive tape. The air pressure of the compressed air, which is jetted to the abrasive tape, and the tension on the abrasive tape are adjusted such that the abrasive tape may be formed into a bent shape having a level of rigidity appropriate for pushing the magnetic disk. The bent shape portion of the abrasive tape is brought into sliding contact with the magnetic surface of the magnetic disk, and the region of the sliding contact of the magnetic surface of the magnetic disk with the abrasive tape is thereby uniformly burnished.

REFERENCES:
patent: 4656790 (1987-04-01), Mukai et al.
patent: 5018311 (1991-05-01), Malagrino et al.
English language abstract for JPA 3-276421 and JPA 59-110546.

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