Dynamic information storage or retrieval – Storage medium structure – Adjuncts or adapters
Patent
1986-05-09
1988-04-26
Stephan, Steven L.
Dynamic information storage or retrieval
Storage medium structure
Adjuncts or adapters
206312, 206444, 360133, G11B 2304
Patent
active
047409487
ABSTRACT:
A disc cartridge comprising a cartridge case, a magnetic recording disc rotatably mounted in the cartridge case, and head insertion openings formed extending to the side portions of the cartridge case, the openings being opened even at one edge of the cartridge case for facilitating insertion of the head mounted in a recording and play back device, the cartridge case being reinforced by at least one reinforcement member having a smaller diameter or a smaller thickness than the thickness of the cartridge case.
REFERENCES:
patent: 4443874 (1984-04-01), Steenberg
patent: 4608681 (1986-08-01), Shiosaki
patent: 4614990 (1986-09-01), Saito
Patent Abstracts of Japan, vol. 6, No. 209 (P-150), (1087), Oct. 21, 1982.
Patent Abstracts of Japan, vol. 8, No. 65 (P-263), (1502), Mar. 27, 1984.
Abe Shinichi
Fujimoto Nobuyuki
Kanazawa Yasunori
Koyama Mitsuyoshi
Matsushima Seiichi
Hitachi , Ltd.
Hitachi Maxwell Ltd.
Stephan Steven L.
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