Ion doped servo pattern for magnetic recording disk

Details Ion doped servo pattern for magnetic recording disk Ion doped servo pattern for magnetic recording disk

1983-08-22

1985-12-03

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

360 77, 369 14, 369 43, 428446, 428694, 428900, G11B 582

Patent

active

045565970

ABSTRACT:
A magnetic recording disk substrate is provided with a capacitive servo pattern by implanting dopant material in the substrate to modify the substrate conductivity in a desired servo pattern.

REFERENCES:
patent: 4376138 (1983-03-01), Alferness et al.
patent: 4510231 (1985-04-01), Takeshita et al.
Potter, "Capacitive Servoing or Topographic Variations", IBM TDB, vol. 21, No. 6, p. 2506, (Nov. 1978).
Acosta et al., "Floppy Disc Embossing for Servo Applications", IBM TDB, vol. 21, No. 10, p. 4259, (3/1979).
Cannon, "Optical or Capacitive Digital Servos for Record Members", IBM TDB, vol. 19, No. 9, p. 3303, (2/1977).

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