Tape cassette
In an inner surface of a lower flange of the magnetic tape reel, 6 concave portions each shaped in nearly as isosceles triangle are made formed at even angle intervals of 60 degrees with their circumferential cross-section area being larger as approaching to a hub. When a magnetic tape is wound on t...
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Main Author | |
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Format | Patent |
Language | English |
Published |
12.08.2003
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | In an inner surface of a lower flange of the magnetic tape reel, 6 concave portions each shaped in nearly as isosceles triangle are made formed at even angle intervals of 60 degrees with their circumferential cross-section area being larger as approaching to a hub. When a magnetic tape is wound on the hub, air which exists between a tape-winding surface of the hub or the tape already wound and the tape to be wound further is guided to the concave portions, and an amount of wound-in air becomes less in the inner side and large in the outer periphery. Consequently, a pressure of winding the tape tight at the outer periphery does not reach the inner side, so that winding irregularities or deformation of the tape do not occur. |
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Bibliography: | Application Number: US20010974820 |