Partitionable portable flexible disk pack

摘要

Improved flexible disk storage media comprising a pack of flexible recording disks adapted for compact stacking in superposed registration. Each disk is hole-encoded to permit associated disk partitioning apparatus to provide automatic selective partitioning of the pack for selecting a desired disk for the performance of a recording and/or reproducing operation with respect to a surface thereof. Each multiple disk pack is removably contained in a protective jacket during partitioning and transducing operations. The jacket cooperates with automatic jacket-opening means so as to provide for convenient insertion and withdrawal of a disk pack while permitting selective partitioning of the pack while contained in the jacket for the performance of a transducing operation on a selected disk in the pack.