Housing for disk-shaped recording medium has cassette designed to accept recording disk, opening exposing part of disk, removable protective housing designed to cover opening

摘要

The housing (1) has a central bore (5) and a recording part and contains a cassette (6) designed to accept a recording disk (2), an opening exposing at least an area of the recording part (4) of the disk and a protective housing (7) removable from the cassette and designed to cover the opening when mounted. Housing elements (11,12) covering the disk surfaces expose the central bore. The disk is contacted by annular protrusions (28,33) on one housing part and on the protective housing.