Winding – tensioning – or guiding – Unwinding and rewinding a machine convertible information... – Carrier speed or tension control
Patent
1992-11-20
1994-10-18
Stodola, Daniel P.
Winding, tensioning, or guiding
Unwinding and rewinding a machine convertible information...
Carrier speed or tension control
242340, B65H 23192
Patent
active
053560884
ABSTRACT:
A cassette tape transport has a tape speed control servo for driving either of a pair of tape drive motors at constant speed in response to tape speed pulses from a tape speed sensor. Upon development of a tape slack, as manifested by a decrease in the recurrence rate of the tape speed pulses, the tape speed control servo is overridden, and the pair of drive motors are simultaneously energized for rotating the cassette reels in opposite directions, thereby stretching the tape between the reels until the slack is removed. The tape transport has a microcomputer which may be factory preprogrammed to include a slack takeup routine. The microcomputer starts the slack takeup routine not only upon decrease in the recurrence rate of the tape speed pulses but also when the tape cassette is loaded in the tape transport and when no tape speed pulse is produced for a predetermined length of time.
REFERENCES:
patent: 3488696 (1970-01-01), Klang
patent: 3669382 (1972-06-01), Struzina
patent: 3914668 (1975-10-01), Okamoto
patent: 4163532 (1979-08-01), Sakai
Fujisawa Shinobu
Nakagawara Kazuhiko
Nguyen John Q.
Stodola Daniel P.
Teac Corporation
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