Disk cartridge having upper shell fitted inside lower shell to enclose lower shutter with upper shutter outside upper shell

摘要

A magnetic disk cartridge comprising a housing in which a magnetic disk is rotatably housed. The housing has upper and lower openings through which magnetic heads provided in a disk drive are positioned over both sides of the magnetic disk. The magnetic disk cartridge further comprises upper and lower shutters for exposing both sides of the magnetic disk through the upper and lower openings. The housing comprises a lower shell, and an upper shell which is fitted inside the lower shell from above. All components are assembled into the magnetic disk cartridge while being stacked within the lower shell.