Magnetic disk cartridge having a shutter member provided with a

Details Magnetic disk cartridge having a shutter member provided with a Magnetic disk cartridge having a shutter member provided with a

1996-08-28

1998-06-02

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Record medium

In container

369271, G11B 2303

Patent

active

057610150

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 u-shaped member formed by an upper wing, a shutter section having a window and a lower wing that are interconnected and extend respectively along the top surface, one side surface and the bottom surface. The shutter member is provided on at least one of the upper and lower wings with inwardly projecting guide claws, the top or bottom surface of the cassette shell is formed with a guide groove adapted for insertion of the guide claws and extending in the sliding direction of the shutter member, and the shutter member is formed at a corner portion connecting the shutter section with the upper or the lower wing and in the vicinity of the guide claw with a slit for increasing springiness during spreading deformation of the upper or lower wing. The structure enables the shutter member to be mounted on the cassette shell without scratching the shell surface with the claws and, as such, eliminates the possibility of shavings produced by scratching getting inside the cassette shell.

REFERENCES:
patent: 5021913 (1991-06-01), Overland et al.
patent: 5189586 (1993-02-01), Rumpza et al.
patent: 5204794 (1993-04-01), Yoshida
patent: 5226035 (1993-07-01), Kato et al.
patent: 5233494 (1993-08-01), Kikuchi
patent: 5382755 (1995-01-01), Correnti
patent: 5537281 (1996-07-01), Ma et al.
patent: 5570252 (1996-10-01), Sumner et al.

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