Orbiting nip sheet output with faceup or facedown stacking and i

Details Orbiting nip sheet output with faceup or facedown stacking and i Orbiting nip sheet output with faceup or facedown stacking and i

1992-06-24

1993-06-01

Skaggs, H. Grant

Sheet feeding or delivering

Delivering

Optional face or back

271186, 271207, B65H 2966

Patent

active

052152987

ABSTRACT:
A plural mode system of transporting sheets in an output path of a copier or printer to a sheet stacking area, with selectable sheet inversion provided by opposing first and second sheet feeding rollers forming a sheet transporting nip engaging the leading edge of a sheet, by a relative orbital motion of the opposing rollers to progressively pivot the nip and thereby change the angular direction of motion of the leading edge of the sheet. A selection between faceup and facedown stacking of the sheets is provided by selectable orbital motion of the nip. The sheet is inverted for stacking by orbital motions pivoting the nip by greater than 90 degrees with the sheet's leading edge held in the nip, so that subsequently the leading edge of the sheet is moving in a direction substantially different from the direction of motion of the leading edge when the leading edge first entered the nip. For faceup stacking, a movable sheet deflector gate deflects sheets in the output path away from the nip, upstream of said nip, to bypass the nip, and feed those selected sheets directly from the output path into the sheet stacking station without inversion from different upstream rollers.

REFERENCES:
patent: 3917256 (1975-11-01), Kubasta
patent: 4506881 (1985-03-01), Hunt et al.
patent: 4712785 (1987-12-01), Stemmle
patent: 4858909 (1989-08-01), Stemmle
patent: 4887060 (1989-12-01), Kaneko
patent: 5031893 (1991-07-01), Yoneda et al.
patent: 5065996 (1991-11-01), McGraw et al.
patent: 5098074 (1992-03-01), Mandel et al.
Xerox Disclosure Journal vol. 17, No. 2, Mar./Apr. 1992, "Orbiting Nip Sheet Control Device" by John F. Derrick, pp. 69-70.

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