Patent ID: 7619855

Claim:
A storage device comprising a cartridge having a storage medium, and having a holder portion in which said cartridge is detachably loaded, said holder portion being capable of being loaded with a plurality of types of cartridges having different lengths in an inserting/removing direction, wherein said holder portion includes: a locking portion which is disposed at a first distance in the inserting/removing direction of said cartridge from an insertion port of said cartridge, and releasably locks said cartridge, and a positioning member which is provided to be movable in the inserting/removing direction of said cartridge, and determines a leading end position in an inserting direction of said cartridge, said cartridge includes a first engaging portion which is disposed at a second distance in the inserting/removing direction of said cartridge from a trailing end in the inserting direction of said cartridge, and engages with said locking portion, wherein the second distance is common among said plurality of types of cartridges, and said plurality of types of cartridges includes a first cartridge that has a second engaging portion which is disposed at a third distance in the inserting/removing direction from a leading end in the inserting direction, and engages with a locking portion of a second storage device different from said storage device.