Sheet feeding apparatus

Details Sheet feeding apparatus Sheet feeding apparatus

1993-03-05

1994-12-13

Bollinger, David H.

Sheet feeding or delivering

Feeding

Separators

271121, B65H 300

Patent

active

053723597

ABSTRACT:
A sheet feeding apparatus for intermittently feeding sheets one by one into printing equipment. The apparatus comprises a sheet pickup roller fixed to a rotatable drive shaft, a pair of cylindrical rollers rotatably and coaxially coupled to the drive shaft and disposed at both sides of the sheet pickup roller, and a pad biased by a spring to be pressed against the sheet pickup roller and the cylindrical rollers. The sheet pickup roller has a cross section comprising an arc portion and a chord portion to substantially form a semicylindrical configuration. Also included in the apparatus is a projection provided at the chord portion of the sheet pickup roller. The projection is arranged to come into contact with the sheet over a range from a contact point between the sheet pickup roller and the pad to one end portion of the arc portion which acts as a leading portion at which the sheet pickup roller initially comes into contact with the sheet when rotating in a predetermined direction.

REFERENCES:
patent: 1956229 (1934-04-01), Sidebotham
patent: 2269571 (1942-01-01), Aktabowski
patent: 4861013 (1989-08-01), Shibata et al.

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