Structurally rigid disk cartridge adaptable to eliminating relat

Details Structurally rigid disk cartridge adaptable to eliminating relat Structurally rigid disk cartridge adaptable to eliminating relat

1987-06-09

1989-08-15

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record medium

In container

369 772, 369291, G11B 2303

Patent

active

048580503

ABSTRACT:
A cartridge comprises a rigid peripheral wall sandwiched between a pair of similarly rigid major surfaces, to form a compartment containing a disk arranged for rotation about a central axis. The cartridge obviates the need to have relative axial movement between the disk and a record/playback transducer head as the cartridge is loaded into a drive mechanism. To that end, a brake mechanism latches the disk axially, as well as radially, in its operative plane as the cartridge is loaded; additionally, the cartridge exposes the disk sufficiently to provide interference-free access to it by the transducer head. For that purpose, at least one of the major surfaces has a head-access opening extending to the peripheral wall, which, in turn, defines a relatively narrow bridge-like member, comparable in width to the operative plane of the disk, extending laterally, in the disk plane, from one side to the other side of the head-access opening. The bridge-like member, in addition to simplifying loading movement, maintains cartridge rigidity across the "throat" of the head-access opening.

REFERENCES:
patent: 4433410 (1984-02-01), Siryj et al.
patent: 4443874 (1984-04-01), Steenberg
patent: 4622607 (1986-11-01), Smith, II
patent: 4648001 (1987-03-01), Komatsu et al.
patent: 4652951 (1987-03-01), Kirn
patent: 4682322 (1987-07-01), Ohta
patent: 4688206 (1987-08-01), Nakagawa et al.
patent: 4740948 (1988-04-01), Nakamori et al.

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