公开(公告)号：US3576282A

公开(公告)日：1971-04-27

申请号：US3576282D

申请日：1969-06-30

Applicant: IBM

Inventor： EPINA AUGUST P JR ,  SMITH SIDNEY H

IPC: G06K13/26 ,  B65H23/188 ,  G11B15/58 ,  G11B15/665 ,  G11B15/67 ,  G11B23/12

CPC classification number: G11B15/58 ,  G11B15/665

Abstract: Magnetic-recording tape disposed on a rotatable spool in a cartridge is pneumatically loaded into first and second tape storage chambers. The first chamber is adjacent the tape exit portion of the cartridge and vacuum in such first chamber tends to pull the tape thereinto to the exclusion of the second chamber. To cause a tape loop to be formed in the second storage chamber, the second chamber (remote from the exiting portion of the cartridge) has an enlarged opening creating a greater pneumatic force to thereby attract the tape thereinto to the exclusion of the first chamber. Yieldable limiting means are provided in the second chamber as a reduced cross-sectional portion wherein the tape attracting force is equalized between the two storage chambers. Thereafter, the tape is loaded into the first chamber to the exclusion of the second chamber.