Patent ID: 7751141

Claim:
An automated data storage library with a data drive for reading/writing data from/to media within data cartridges, the library comprising: a plurality of multi-cartridge storage cells arranged in a two-dimensional array, each cell having a front opening and a back, data cartridges being retained in positions in a cell from a front position to a rear position; a gripper positionable to insert cartridges into, and remove cartridges from, the front openings of the cells and transporting cartridges within the library; and an automated pusher device, comprising: a lead screw within a selected cell and having a first end at the back of the selected cell and a second end proximate to the front opening of the selected cell; a tab threaded onto the lead screw and movable along the lead screw when the lead screw is rotated; drive means; means for engaging the lead screw with the drive means; and means for activating the drive means to rotate the lead screw whereby the tab engages the selected cartridge and moves the selected cartridge forward.