Reel servo for tape transport

Details Reel servo for tape transport Reel servo for tape transport

1983-09-15

1985-04-23

Truhe, J. V.

Electricity: motive power systems

With particular motor-driven load device

Tension-maintaining type of motor-control system

318 6, 360 73, 360 743, 242 7544, 242 7551, B65H 5938

Patent

active

045132291

ABSTRACT:
A supply reel servo for a tape transport in which a motor-driven capstan of low inertia draws tape past a cylindrical scanning drum includes a tension servo arm which provides a signal denoting tape tension in a loop adjacent the supply reel. This signal is compared with a reference to develop an error signal to control the supply reel motor. The reference is modified in response to a signal which represents the energization of the capstan motor and accordingly the torque output thereof so as to provide automatic compensation for variation in tape tension at the scanning drum.

REFERENCES:
patent: 3283228 (1966-11-01), Asseo
patent: 3584805 (1971-06-01), Lee
patent: 3604992 (1971-09-01), Audeh
patent: 3606201 (1971-09-01), Petusky
patent: 3673473 (1972-06-01), Werner
patent: 3734426 (1973-05-01), Howes et al.
patent: 4015177 (1977-03-01), Martins
patent: 4160195 (1979-07-01), Sakamoto
patent: 4341363 (1982-07-01), Inatome
patent: 4361787 (1982-11-01), Negishi et al.
patent: 4429261 (1984-01-01), Ohno

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