Tape tension controller.

摘要

A tape tension control apparatus for a tape winding apparatus for winding a magnetic tape within a tape cassette has a recess whose width changes in the direction of movement of the tape with varying tension is formed in a wall of a vacuum chamber, and the change of a tape position, during the time when the magnetic tape is wound within the tape cassette, is detected as the change of pressure caused by leakage of air past the tape via the recess whose apparent size changes as the tape moves. Therefore, a tape tension during the winding process can be varied so as to become optimum. <IMAGE>