A security box for holding items of recorded media includes a base and a lid hinged together between open and closed positions. A low viscosity conductive ink, containing microscopic metal particles, is deposited over the top surface of the wafer to cover the vias. The locking taper secures the adjustment of the knuckle halves, even if the knuckle screw becomes loosened. Meshed gear teeth are provided on endmost links of the two linkages of each scissor link, synchronizing their movement. A file management unit is notified of the successful write of the file removal operation to the log used for storing system operations.