Abstract: A disc recorder has a rotating flexible recording disc and a transducer which is radially movable with respect to the disc. The transducer defines a gap which extends radially of the disc and is positioned for most efficient operation with the disc in closely coupled relation to the transducer on both sides of the gap. A transducer transport includes a guide member extending transversely of the axis of rotation of the flexible disc and defining a guide surface. The transducer is mounted on a carriage which moves along the guide member in contact with the guide surface such that the transducer is moved radially with respect to the rotating disc. A slot in the guide member permits the guide surface to be distorted such that the transducer carriage is tilted as it is moved along the guide surface, thereby maintaining the desired closely coupled relation between the transducer and the disc.

Abstract: A disc recorder has a rotating recording disc and a transducer assembly, including a transducer, which cooperates with the disc. A carriage is provided for mounting the transducer assembly. An idler pulley and a drive pulley, one of the pullies being inward from the periphery of the disc and the other pulley being positioned outward of the disc from the first pulley cooperate with a carriage belt arrangement which is attached to the carriage and to the drive pulley and which extends around the idler pulley. The carriage belt arrangement includes first and second carriage belts which are each attached at one end to the carriage and at their other ends to the drive pulley. Additionally a third carriage belt is attached to the carriage and extends in the opposite direction from the first and second belts and is attached to the drive pulley intermediate the first and second carriage belts.

Abstract: A disc recorder includes a rotating recording disc and a transducer carriage which is transversely movable with respect to the axis of rotation of the rotating disc. The transducer carriage includes a mounting surface which is substantially perpendicular to the rotating disc and substantially parallel to the direction of movement of the carriage. A transducer holding plate is positioned adjacent and parallel to the mounting surface and a parallel motion linkage attaches the holding plate to the carriage. The linkage confines the motion of the transducer holding plate in a plane parallel to the mounting surface to motion which is substantially perpendicular to the rotating disc. A spring is provided biasing the holding plate against the mounting surface and biasing the holding plate toward the rotating disc. The transducer is positioned on the holding plate such that it coacts with the rotating disc. Friction reducing pads may be positioned between the mounting surface and the transducer holding plate.

Abstract: A disc recorder includes a rotating disc and a transducer for coacting with the disc. A guide member has a guide surface extending transversely of the rotating disc and including a groove extending parallel to the disc. A carriage means for mounting the transducer is positioned generally parallel to and movable along the guide surface. A friction reducing pad is mounted on the carriage means and is movable along the guide surface. Friction reducing cylindrical bearing means are also mounted on the carriage means in spaced relation to the pad and are movable in the groove. A locating member having a locating surface is positioned substantially parallel to the guide surface. A loading means is mounted on the carriage means and engages the locating surface to bias the carriage means toward the guide surface such that the bearing pad engages the guide surface and the cylindrical bearing means engage the groove.