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Web Feed Servo Mechanism Disclosure Number: IPCOM000055069D
Original Publication Date: 1980-May-01
Included in the Prior Art Database: 2005-Feb-13

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Coles, RJ [+details]


The web-feed mechanism shown in the figure includes a mechanical servo operable in response to lateral displacement of a web from a desired feed path to skew a drive roller in a direction such as to correct a displacement error. The mechanism includes a differential torque amplifier through which the power gain required to overcome frictional forces is supplied to the mechanism.