Disc protection structure

Details Disc protection structure Disc protection structure

1997-04-11

1998-05-26

Levy, Stuart S.

Dynamic information storage or retrieval

Storage medium structure

Adjuncts or adapters

369283, G11B 724, G11B 3314

Patent

active

057577650

ABSTRACT:
A protection structure adapted for protecting a disc includes a film mounted on an underside of the disc for covering a data reading region of the disc. The film includes an inner rim portion abutting on an inner annular portion of the disc, and an outer rim portion abutting on an outer annular portion of the disc. A plurality of ribs each a extend radially and inwardly from the inner rim portion of the film and each abut on the inner annular portion of the disc, and a plurality of recesses are each defined between adjacent two of the ribs. An annular adhesive sheet forms an adhesive surface which can be adhered on each of the ribs and can be adhered on the inner annular portion of the disc via each of the recesses, thereby securing each of the ribs on the inner annular portion of the disc.

REFERENCES:
patent: 3961656 (1976-06-01), Aggarwal
patent: 4327830 (1982-05-01), Patel et al.
patent: 4556968 (1985-12-01), Pelkey et al.
patent: 4879710 (1989-11-01), Iijima
patent: 4983437 (1991-01-01), Merrick
patent: 5020048 (1991-05-01), Arai et al.
patent: 5299186 (1994-03-01), Tsurushima

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