a control mechanism that loads / unloads data storage tape is part of a tape drive that receives a removable tape cartridge . the tape cartridge stores the data storage tape that is movable using the control mechanism . the control mechanism includes a plurality of gears , together with a cam . a leader assembly is operably connected to the control mechanism . at least portions of the leader assembly are movable in connection with loading or unloading the data storage tape relative to the leader assembly . a leader pin is joined to an end of the data storage tape . when the loading operation is performed , portions of the leader assembly are moved generally linearly into the tape cartridge and then the control mechanism causes such portions to pivot in order to engage the leader pin and remove it from its seat . when the unloading operation is performed , the portions of the leader assembly are moved in substantially opposite directions from the loading operation .