公开(公告)号：CA961576A

公开(公告)日：1975-01-21

申请号：CA139559

申请日：1972-04-12

Applicant: IBM

Inventor： JANSSEN DONOVAN M ,  TIAO HUI-LI ,  KOLLAR ERNEST P ,  STAHLOBERG EUGENE G

IPC: G11B23/087

Abstract: A tape-containing cassette facilitates interchange between low-speed recording systems and high-speed or high-performance recording systems. In a low-performance system, the tape is transported wholly within the cassette. The cassette may be removed from a low-performance player and placed in a high-performance player. Then, the tape is partially removed from the cassette for higher speed transport. A front wall opening of the cassette includes a pair of movable front wall end plates. The end plates partially covering the front wall opening facilitate in-the-cassette tape processing. Moving the two end plates to a nonclosure position clears the entire front wall opening to facilitate removing the tape from the cassette for out-of-the-cassette tape processing.