Tape tension control apparatus

Details Tape tension control apparatus Tape tension control apparatus

1997-07-23

1999-07-13

Nguyen, John Q.

Winding, tensioning, or guiding

Unwinding and rewinding a machine convertible information...

Carrier speed or tension control

2423344, 2423345, 2424132, 360 71, B65H 5938, G11B 1546, G11B 2342

Patent

active

059214937

ABSTRACT:
A tape tension control apparatus for controlling a tension of a tape extended between a pair of reels including a current servo system for adjusting a current of a reel motor in accordance with a diameter of a tape roll wound on a reel, a speed servo system for adjusting a current of the motor so that the rotational speed of the motor exceeds a predetermined value corresponding to the roll diameter, and a changeover device for selecting between said servo systems. The changeover device selects the speed servo system upon activation of the apparatus, after which it selects the current servo system when the current to the motor exceeds a predetermined value.

REFERENCES:
patent: 3761035 (1973-09-01), Wang
patent: 5259563 (1993-11-01), Kakiwaki et al.

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