Patent ID: 8125730

Claim:
A magnetic tape library device, comprising: a plurality of cartridge housing bodies for housing a large number of magnetic tape cartridges inside thereof; a device main body for housing the cartridge housing bodies within a same plane in a freely slidable manner and in parallel to an inserting/extracting direction; an accessor mechanism provided to one of side faces of the device main body along the inserting/extracting direction for transporting the magnetic tape cartridge that is extracted from one of the plurality of cartridge housing bodies; and a magnetic tape drive provided to the device main body for loading the magnetic tape cartridge transported by the accessor mechanism to read and write data, wherein the device main body includes: a housing body pullout mechanism for pulling out the cartridge housing body on a back side of the inserting/extracting direction among the plurality of the cartridge housing bodies towards a front side of the inserting/extracting direction; and a housing body extracting mechanism for extracting, from the device main body, the cartridge housing body pulled out by the housing body pullout mechanism.