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Consumer Electronics by S. P. Bali

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TAPE TRANSPORT MECHANISM

The term tape transport is a collective name given to the parts of a tape recorder that control the movement and handling of the tape. All machines employ a capstan, Fig. 10.20, to move the tape past the heads at a precise speed. A capstan is a precision cylindrical drum or spindle against which the tape is passed in order to maintain a constant tape speed. A pressure roller holds the tape, by spring pressure, against the capstan.

The capstan in a typical pinch roller tape drive mechanism rotates constantly under drive motor power. A pinch roller is positioned in a movable bracket close to the capstan so that it can be withdrawn from the capstan a few thousandth of an inch or it can be brought to bear on the capstan as ...

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