Apparatus for dynamically adjusting paper tension in a linear ma

Details Apparatus for dynamically adjusting paper tension in a linear ma Apparatus for dynamically adjusting paper tension in a linear ma

1981-12-14

1983-09-06

Burr, Edgar S.

Typewriting machines

Sheet or web

For feeding web record-medium

4006161, 226 74, B41J 1130, G03B 130

Patent

active

044026234

ABSTRACT:
Apparatus used in conjunction with printer document feed mechanisms for allowing the dynamic adjustment of the feed mechanisms while paper feed is occurring, thus adjusting paper tension. The apparatus has a linear adjustment capability over its total range. In particular, adjusting levers are attached to the feed mechanism support shaft, pinions being attached to each end of the shaft. The pinion teeth mesh with the teeth of racks attached to each side plate of the feed mechanism. As the adjusting levers are moved, the support shaft and pinions rotate. The rotation of the pinion meshing with the rack causes the support shaft (and feed mechanism) to move, changing the distance between the feed mechanism and the printer platen. This distance, and paper tension, vary linearly with the angular position of the levers. The paper tension can be adjusted while the feed mechanism is operative.

REFERENCES:
patent: 2302704 (1942-11-01), Mabon
patent: 2400226 (1946-05-01), Euth
patent: 2557592 (1951-06-01), Berger

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