Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1996-08-01
1999-04-06
Klimowicz, Willaim J.
Dynamic magnetic information storage or retrieval
Record medium
In container
369291, G11B 2303
Patent
active
058926429
ABSTRACT:
A magnetic disk cartridge has a magnetic head access opening formed in one side surface of a flat cassette shell having a top surface, a bottom surface and side surfaces. A shutter member provided to be slidable on the cassette shell for opening and closing the magnetic head access opening is constituted as a sectionally .hoarfrost.-shaped member formed by interconnecting a pair of upper wings, a shutter section and a pair of lower wings that extend respectively along the top surface, one side surface and the bottom surface. Portions of the top surface and the bottom surface of the cassette shell other than those adjacent to the one side surface portion formed with the magnetic head access opening are formed with recesses for receiving and guiding the upper wings and the lower wings of the shutter member. The structure enables sufficient wall thickness to be secured at the portion of the cassette shell near the magnetic head access opening, effectively minimizes invasion of dust, provides stable strength preventing easy deformation of the magnetic head access opening, and enables the shutter member slidably mounted on the cassette shell to slide smoothly at all times.
REFERENCES:
patent: 5689393 (1997-11-01), Watanabe
patent: 5724217 (1998-03-01), Oishi
patent: 5761015 (1998-06-01), Oishi
Fuji Photo Film Co. , Ltd.
Iomega Corporation
Klimowicz Willaim J.
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