Nip set for reversible feeding of single sheets

Details Nip set for reversible feeding of single sheets Nip set for reversible feeding of single sheets

1996-04-04

1997-10-07

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

With means to align sheet

271273, B65H 916

Patent

active

056739095

ABSTRACT:
Apparatus for advancing the cut sheets in an in-track direction to a sheet justification apparatus includes a driven roller and a gimbaled, self-aligning follower associated with the driven roller. The follower is movable between an engaged position, forming a nip with the driven roller, and a disengaged position, spaced from the driven roller. The follower is selectively movable to its engaged position to direct media from to the justification mechanism, to its disengaged position to allow the justification mechanism to justify the sheet, and back to its engaged position without introducing skew or shift as it re-engages the media to direct media from the justification mechanism without introducing skew or linear shift. The driven roller and the follower may be associated such that the media forms a wrap angle partially around the roller. The follower has a degree of freedom to rotate about an axis aligned with the direction of movement of the follower between its engaged position and its disengaged position. The follower is bi-directional, having a pair of rollers, one roller on one side of the axis in the direction of media travel and the other roller on the other side of the axis in the direction of media travel. The follower has a second and a third degree of freedom to rotate about a pair of orthogonal axes that are in a plane perpendicular to the axis aligned with the direction of movement of the follower.

REFERENCES:
patent: 3942789 (1976-03-01), Townsend
patent: 4269594 (1981-05-01), Umans et al.
patent: 4778169 (1988-10-01), Fazio et al.
patent: 5031895 (1991-07-01), Couper
patent: 5210616 (1993-05-01), Kawasaki et al.
patent: 5322273 (1994-06-01), Rapkin et al.
patent: 5382013 (1995-01-01), Walsh
patent: 5484142 (1996-01-01), Demange

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