Tape media interlayer tension check

Details Tape media interlayer tension check Tape media interlayer tension check

1981-10-26

1983-06-21

Truhe, J. V.

Electricity: motive power systems

With particular motor-driven load device

Tension-maintaining type of motor-control system

360 90, 242179, G11B 1543, G11B 1518

Patent

active

043896006

ABSTRACT:
Reels of magnetic tape used in a reel-to-reel drive system suffer from an inter-layer slip if the reel has gone through environmental changes. This slip will cause errors to occur in the reading of the tape, since a constant tension and velocity and an accurate position is required in the reel-to-reel drive. To check whether the tension of the tape needs to be refreshed, the end of the tape is firmly held while the hub is driven in a reverse direction against the firmly held end of the tape. A detected reverse rotation indicates an inter-layer slip condition. The tape tension must be refreshed by unreeling the tape and rereeling with the correct tension applied. The reel of tape is then ready for operation.

REFERENCES:
patent: 3917190 (1975-11-01), Richt

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