Stretched surface recording disk substrate

Details Stretched surface recording disk substrate Stretched surface recording disk substrate

1984-02-16

1986-12-23

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Record medium

Disk

G11B 582

Patent

active

046316094

ABSTRACT:
A stretched surface recording disk includes an annular substrate to which are adhesively attached magnetic recording films covering each major surface of the substrate. The substrate has annular ridges adjacent its inner and outer diameters which support the film above and parallel to each major surface and film attachment surfaces adjacent the ridges which are radiused an amount sufficient to place the adhesive in compression, preferably about 0.030 inches (0.80 mm).

REFERENCES:
patent: 3336583 (1967-08-01), Comstock
patent: 3373413 (1968-03-01), Treseder
patent: 3509274 (1970-04-01), Kihara
patent: 3537083 (1970-10-01), Voth
patent: 3599226 (1971-08-01), Lips
patent: 3805292 (1974-04-01), Hashiguchi et al.
patent: 4365257 (1982-12-01), Gerfast
patent: 4449139 (1984-05-01), Geyer et al.
patent: 4451836 (1984-05-01), Leonard et al.
patent: 4573097 (1986-02-01), Pastor et al.
Pat. appln., "Stretched Surface Recording Disk and Method of Manufacture", Pastor, U.S. Ser. No. 433,953 filed 10/13/82.

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