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公开(公告)号：FR2316690A1
公开(公告)日：1977-01-28
申请号：FR7615565
申请日：1976-05-17
Applicant: IBM
Inventor： BARRETT MICHAEL C , PETTERSON ERIC S
Abstract: A magnetic tape cartridge includes a housing for supporting the tape for movement therein and for enclosing a portion of the tape. The tape is expandable from a particular reference point along its width by virtue of temperature and humidity changes. A track position indicator attached to the cartridge includes indicia thereon relative to track positions along the width of the tape. The indicator has a coefficient of expansion closely similar to the coefficient of expansion of the tape, and in the preferred embodiment is made of the same material as the magnetic tape substrate material.
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