Optical disk library including optical disk media with non-standard thin hubs and disk drive spindle adaptor

Library apparatus for maximizing the number of optical disks stackable within library space by utilizing non-standard optical disks, said library apparatus for use with a standard disk drive apparatus which is used to read standard optical disks having a standard media portion upon which information may be resident and a standard media hub portion, said standard optical disks positioned within a standard optical disk cartridge, said library apparatus comprising said non-standard optical disks having said standard media portion and a non-standard media hub portion, said non-standard optical disks positioned within a non-standard optical disk cartridge, said library apparatus further comprising an inner case for holding a stack of said non-standard optical disk cartridges within said library space, said inner case contained within a housing, said housing having a slot adapted for alignment with an entry slot in said standard disk drive apparatus, said standard disk drive apparatus having a spindle modified by a spindle adaptor designed to mate with said non-standard optical disks, said non-standard media hub portion has a centering hole adapted for a mating relationship with the spindle adaptor, said non-standard media hub portion having a relatively thin non-standard thickness dimension commensurate with the thickness of the standard media portion thus saving space in the thickness dimension relative to the standard media hub portion, said non-standard optical disk cartridge having a slimmer thickness than said standard optical disk cartridge to take advantage of the savings in thickness dimension provided by said non-standard optical disks, thereby maximizing the number of optical disks which can be stacked upon said inner case.