Disk for recording and/or reproducing apparatus having magnetic

Details Disk for recording and/or reproducing apparatus having magnetic Disk for recording and/or reproducing apparatus having magnetic

1988-02-02

1989-05-09

Stephan, Steven L.

Dynamic information storage or retrieval

Storage medium structure

Adjuncts or adapters

369271, G11B 1702, G11B 1920

Patent

active

048295108

ABSTRACT:
An optical disk is disclosed in which a disk hub is constituted by a disk-like metal plate having a plurality of engaging projections formed on its outer periphery by the stepping operation and a ring-like member of synthetic resin having a central hole engaged by a spindle shaft of a disk drive unti and mating engaging portions engaging with engaging projections of a metal plate. The metal plate is mounted to the ring-like member by turning the metal plate in a predetermined mounting direction with respect to the ring-like member to cause the engaging projections of the metal plate to be engaged with the mating engaging portions of the ring-like member.

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