Sheet feeding apparatus

Details Sheet feeding apparatus Sheet feeding apparatus

1980-11-10

1982-09-21

Schacher, Richard A.

Sheet feeding or delivering

Feeding

Separators

271127, 271160, B65H 330

Patent

active

043503284

ABSTRACT:
A sheet feeding apparatus includes a pivotally disposed tray for supporting a stack of sheets thereon, a sheet feeding roller positionally fixed proximate the leading edge of the uppermost sheet of a stack on the tray, a biasing member for urging the tray in opposition to the fixed feeding roller so that the uppermost sheet of the stack is pressed into frictional contact with the roller, and a wedge-shaped supplemental displacement member of a relatively light specific gravity material disposed intermediate the tray and a sheet stack supported thereon to displace the tray with respect to the feeding roller by an amount greater than that displacement otherwise imparted to the tray by sheets stacked thereon so as to increase the frictional feeding force with which the uppermost sheet is pressed against the feeding roller by the biasing member and thereby facilitate feeding of sheets having properties that might otherwise interfere with normal feeding from the tray.

REFERENCES:
patent: 3687448 (1972-08-01), Vora
patent: 3857558 (1974-12-01), Patel
patent: 4212456 (1980-07-01), Ruenzi
patent: 4240622 (1980-12-01), Rutishauser
patent: 4256237 (1981-03-01), Desmond

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