The present invention provides a magazine-based data cartridge library that, in one embodiment, comprises a plurality of shelves that are capable of holding a plurality of data cartridge magazines, one or more drives, a magazine transport for moving magazines within the cabinet, and a cartridge transport for moving data cartridges between a magazine and a drive. A plurality of tray-type containers may be unitized in several stacked configurations. The conveyor belt 81 curves in a C-shape when seen from outside the belt path where the conveyor belt 81 travels around a guide roller 82c. With this arrangement, a terminal connecting device for a flexible substrate can be offered which allows for readily establishing connection between the external substrate and the flexible substrate. Furthermore, the conduit is designed to prevent the transfer of liquefied fuel from the one cylinder to the other.