A system for regulating tension applied to a tape in an apparatus wherein the tape is selectively driven in one of first and second directions by a tape drive means, comprising:
- tension applying means for applying tension to the tape when the tape travels in the second direction, and for releasing the application of tension to the tape when the tape travels in the first direction;
- control means for controlling said tension applying means to regulate the tension applied to the tape when the tape travels in the second direction;
- and
- slack take-up means, operatively connected with said control means, for taking up slack in the tape before the drive means causes the tape to travel in the second direction, and for preventing the tape from becoming loose when the traveling direction of the tape is switched from the first direction to the second direction,
- wherein the apparatus has a first reel, supported by a first reel table, onto which the tape traveling in the first direction is wound, and a second reel, supported by a second reel table, onto which the tape traveling in the second direction is wound, the first and second reel tables being driven by the drive means, and wherein said slack take-up means causes the first reel table to rotate by a predetermined amount in a direction which causes a small portion of the tape to be wound onto the first reel immediately before the drive means causes the tape to travel in the second direction.