Sheet feeding or delivering – Feeding – Separators
Patent
1992-03-23
1993-05-11
Schacher, Richard A.
Sheet feeding or delivering
Feeding
Separators
271121, B65H 304
Patent
active
052094642
ABSTRACT:
Sheet feed apparatus including a scuff feeder for reliably transporting sheets from the bottom of a stack of sheets without marking of the sheets. The sheet transport apparatus comprises a retard device, located in contact with the lead edge, in the direction of sheet feed, of a sheet stack for preventing double feeding of sheets from the sheet stack. A scuff feed belt is located to have a run extending in the direction of sheet feed substantially above the surface of the tray and below the retard device to form a sheet separation nip with the retard device. The run of the scuff feed belt presents an area of contact with the sheet stack to carry about 50% of the weight of the sheet stack. Additionally, the scuff feed belt of the scuff feeder and the retard device respectively have a plurality of grooves oriented in the direction of sheet feed. The grooves assure adequate sheet feeding contact by the scuff feed belt and the retard device in that the lands of the grooves are far enough apart to penetrate any oil on the sheets and collect the oil in the valleys away from the traction area, yet close enough together to prevent localized high pressure points which would result in toner ruboff.
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Bermel Alexandra D.
Mortellaro Larry J.
Russel Steven M.
Shea Robert H.
Eastman Kodak Company
Kessler Lawrence P.
Schacher Richard A,.
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