Abstract: A disk drive includes a disk tray disposed within a casing for receiving an optical disk thereon, a clamp-holding seat disposed above the disk tray and having a clamp opening, a clamp disposed within the clamp opening in the clamp-holding seat and projecting downwardly from the bottom side thereof, a protrusion structure disposed on the clamp-holding seat, a resilient structure disposed on the clamp-holding seat opening opposite to the protrusion structure, and a spindle motor disposed below the disk tray for rotating the disk once the spindle motor is moved upward via the reading opening to a reading position, where the disk is sandwiched between the clamp and the spindle motor.

Abstract: The invention concerns a device which comprises a device for displacing to transversely position a multitrack tape in front of a reading and/or writing head. The magnetic tape carries a plurality of elementary tracks which are grouped in several bundles. These bundles are selectively accessed using the device for displacing. The writing and/or reading head can write and/or read information from elementary tracks contained in one bundle at a time. The device for displacing comprise a tape guide acting on longitudinal edges of the tape and transversely translating the tape. Furthermore they comprise either a movable tape reels platform or movable pins to accommodate for the transverse tape displacement.