Abstract: An apparatus to generate a spring force increasing in accordance with a quantity of tape media cartridges stored in a deep slot cell. The apparatus may include a deep slot cell, a biasing element including a torsion spring, and an advancement element. The deep slot cell may store one or more cartridges. The biasing element may generate a spring force toward the front of the deep slot cell such that the spring force generated increases in accordance with a number of cartridges stored in the cell. The advancement element may be positioned to apply the spring force to the cartridges, thereby advancing the cartridges toward the front of the deep slot cell.

Abstract: A disc storage unit includes a case, a tray supported by the case and configured to support an array of discs in respective parallel vertical planes across which respective coaxial axes of the discs pass horizontally. There is a disc-raising mechanism having a finger activatable to lift one of the discs from the tray within its respective plane to thereby render that disc non-coaxial with other discs that might be supported by the tray. The storage unit also includes an indexing mechanism that is configured to cause the disc-raising mechanism to raise others of the discs in a like manner. This enables labels of the raised discs to be viewed for selection by a user.