Patent ID: 6994290

Claim:
A magnetic tape manufacturing apparatus, comprising: a tape supply device which draws out a wide web-like magnetic tape material wound in roll form from a delivery side; a slitter which slits the magnetic tape material into a plurality of narrow magnetic tapes; a tape take-up device which takes up the narrow magnetic tapes individually on cores on a take-up side; and a tape transporting device which is provided between the slitter and the tape take-up device and guides the narrow magnetic tapes to the tape take-up device, wherein: the tape transporting device includes a plurality of roller members which support the narrow magnetic tapes, respectively, the plurality of roller members are mounted on a plurality of supporting shafts, respectively, at least one eddy current clutch is mounted on at least one of the plurality of supporting shafts, said at least one eddy current clutch being internally mounted in a corresponding one of said plurality of roller members, said at least one eddy current type clutch controlling rotation of the corresponding one of said roller members mounted on said one of the plurality of supporting shafts to control tension of the narrow magnetic tape supported on the corresponding one of said roller members, at least one tension detection device provided for at least one of the plurality of narrow magnetic tapes, and a means for providing feedback control of a number of revolutions of the at least one supporting shaft based on a tension detected by the tension detection device to control rotation of the at least one of the supporting shafts to control the tension of the magnetic tape supported by the one of said plurality of roller members.