A capstan controlled tape transport mechanism that includes a tape tension controller for preventing tape slack in the tape path is presented. The transport mechanism includes a capstan, a spinnable reel, and a reel motor which controls the speed of revolution of the reel in response to a reel motor...http://www.google.fr/patents/US6364234?utm_source=gb-gplus-shareBrevet US6364234 - Tape loop/slack prevention method and apparatus for tape drive
Tape loop/slack prevention method and apparatus for tape drive
