US Patent 7427003 Disk feeder and unstacker

The disk feeder removes disks from the bottom of a stack of disks by pushing them one at a time with a ram traveling back and forth under a tower holding the stack of disks. The tower has a gap at the base for allowing one disk at a time to be pushed out by the ram. The tower may be tilted to provide for a stack of disks, which rest partly on a wall of the tower to reduce the weight of the stack on the bottom disk. The workstation fed by the disk feeder can be a disk destroyer, a printer, a writer or any other disk processing device. Combinations of disk feeders and workstations can produce batches of copies of disks with labels printed on them. The disk feeder provides a low cost reliable way to feed disks to work stations.