Printer with improved pinch roller actuating mechanism

Details Printer with improved pinch roller actuating mechanism Printer with improved pinch roller actuating mechanism

1987-10-20

1989-05-16

Pearson, Charles A.

Typewriting machines

Sheet or web

Including friction-feed means

4006373, B41J 13036

Patent

active

048305278

ABSTRACT:
A printer includes a stationary paper chute extending along the outer peripheral surface of a platen over a limited angular extent thereof so as to define therebetween a paper feed passage, the paper chute having an opening through which a pinch roller is movable into and out of the paper feed passage for releasably locking a paper on the platen. The printer further has a pinch roller actuating mechanism which includes a pressure spring disposed adjacent to the paper chute for biasing the pinch roller against the platen, the pressure spring being composed of a cantilevered resilient strip having a free end on which the pinch roller is rotatably supported, and a release camshaft rotatably disposed between the paper chute and the pressure spring and angularly movable to resiliently displace the pressure spring in a direction to move the pinch roller away from the platen.

REFERENCES:
patent: 442633 (1890-12-01), Merritt
patent: 2134343 (1938-10-01), Salzberger
patent: 2627333 (1953-02-01), Butler
patent: 4518271 (1985-05-01), Hirata
patent: 4522520 (1985-06-01), Takenoya et al.

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