Abstract: A transmission apparatus for use in a stack of data library units, the stack comprising a lower data library unit and an upper data library unit, each data library unit of the stack comprising a plurality of upright frames, the transmission apparatus comprising a tray for transporting a tape cartridge; a plurality of positioning pinions rotatably attached to the tray; a plurality of racks each disposed on each of the plurality of upright frames and configured to be engaged by the corresponding plurality of positioning pinions for vertical positioning of the tray within each data library unit; a plurality of partial racks each comprising an upper tooth and a lower tooth disposed adjacent the plurality of racks at each of the plurality of upright frames, the upper tooth being disposed adjacent a lower end of the frame of the upper data library unit and the lower tooth being disposed adjacent an upper end of the frame of the lower data library unit; a plurality of cross-over pinions each rotatably attached to th

Abstract: A slot for releasably storing a tape cartridge is disclosed. The slot comprises an enlargeable receiving portion for releasable insertion of the tape cartridge and a plate for supporting the tape cartridge in the slot. At least a portion of the plate is moveable for enlarging the receiving portion.

Abstract: A transmission apparatus for transmitting tapes within a tape library is disclosed. The transmission apparatus comprises a tray for transmitting a tape cartridge. A plurality of pinion gears is provided. The pinion gears are operably connected to each other and are rotatably attached to the tray. A plurality of vertically disposed racks is provided for engagement by the plurality of pinion gears for rotational movement therealong.

Abstract: A transmission apparatus for transmitting tapes within a tape library is disclosed. The transmission apparatus comprises a tray for transmitting a tape cartridge. A plurality of pinion gears is provided. The pinion gears are operably connected to each other and are rotatably attached to the tray. A plurality of vertically disposed racks is provided for engagement by the plurality of pinion gears for rotational movement therealong.

Abstract: A slot for releasably storing a tape cartridge is disclosed. The slot comprises an enlargeable receiving portion for releasable insertion of the tape cartridge and a plate for supporting the tape cartridge in the slot. At least a portion of the plate is moveable for enlarging the receiving portion.