Tape attached sensor

Details Tape attached sensor Tape attached sensor

1982-12-29

1985-03-05

Levy, Stuart S.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

242 57, 318 7, 360 742, G11B 1546

Patent

active

045026475

ABSTRACT:
A method and system for detecting tape attachment to a machine reel of an automatically threading magnetic tape system. During the threading process, a file reel is rotated to allow a sufficient length of tape to be unwound therefrom, which length of tape eventually attaches to the machine reel after being automatically threaded through the desired tape path. The rotation of the file reel is maintained during this threading process by delivering current pulses to a file reel motor. These current pulses are counted per unit time. As soon as the tape attaches to the machine reel, the machine reel begins to pull the tape from the file reel, thereby eliminating the need to deliver current pulses to the file reel motor, at the same rate as needed prior to tape attachment. A change in the rate of the current pulses delivered to the file reel motor signals a tape attached condition.

REFERENCES:
patent: Re30939 (1982-05-01), d'Alayer de Costemore d'Arc et al.
patent: 3473042 (1969-10-01), Orlando
patent: 3668492 (1972-06-01), Konishi et al.
patent: 3746278 (1973-07-01), Dennis et al.
patent: 3795371 (1974-03-01), Tolini et al.
patent: 3809328 (1974-05-01), Cope et al.
patent: 3823895 (1974-07-01), Jones et al.

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