Overdriven tractor-friction paper drive

Details Overdriven tractor-friction paper drive Overdriven tractor-friction paper drive

1982-10-01

1988-06-28

Levy, Stuart S.

Advancing material of indeterminate length

Means to engage longitudinally spaced modifications in material

Pins on flexible belt or chain

4006161, B41J 1130, G03B 130

Patent

active

047533803

ABSTRACT:
A paper web-moving system includes a friction-type drive roll mechanism cooperatively operating with a detachable tractor drive mechanism. In one embodiment, the paper first passes over and engages a pair of driven tractors at an angle with respect to the horizontal, then under a driven roller platen and between two spaced apart sets of rollers positioned to force the paper against the roller platen. The drive mechanisms are configured so that the paper drive rate of the roller platen is greater than the drive rate of the tractor, causing paper tension therebetween. The present system permits the use of friction roll paper, tractor fan fold paper, and single sheets with a short tear-off capability.

REFERENCES:
patent: 2080524 (1937-05-01), Allen
patent: 2130015 (1938-09-01), Jensen
patent: 4088256 (1978-05-01), Potma et al.
patent: 4304345 (1981-12-01), Carlin

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