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SHEET SKEWING SYSTEMS FOR PASSIVE DECELERATING EJECT ROLLS

IP.com Disclosure Number: IPCOM000026492D
Original Publication Date: 1992-Jun-30
Included in the Prior Art Database: 2004-Apr-06
Document File: 4 page(s) / 161K

Publishing Venue

Xerox Disclosure Journal

Abstract

A common problem with document finishers is encountered when sheets are corner registered in an up-hill compiling tray. Failure during the registration process can occur if a sheet's lead corner rotates (clockwise) into a registration edge. As a result some document finishers use a closely spaced dual-roll sheet ejection nip that utilizes different size roll diameters to intentionally skew sheets in a counterclockwise direction as they are being deposited in the compiling tray. Other document finishers with faster paper velocities require a decelerating sheet ejection system to minimize compile time and scatter as sheets are ejected into the compiling tray. A means of achieving the deceleration is through a passive, non-nip corrugation system, 5 shown in Figure 1A. With such a system skewing the sheets using different size rolls becomes impractical since rolls are spaced further apart then in a closely spaced dual-roll sheet ejection nip system. Disclosed are two non-nip corrugation systems with common size passive decelerating eject rolls that insure proper registration in up-hill compiling tray 20 by skewing sheets.

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Page 1 of 4

XEROX DISCLOSURE JOURNAL

Proposed Classification

FIG. 7A

VIEW A-A FIG. 75

XEROX DISCLOSURE JOURNAL - Vol. 17, No. 3 May/June 1992 135

SHEET SKEWING SYSTEMS FOR PASSIVE DECELERATING EJECT U.S. C1.335/014 ROLLS Int. C1. G03g 15/00 Barry Paul Mandel
Anthony Thomas DeSanctis
Francesca Aurea Barrientos
Richard Allen Van Dongen

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Page 2 of 4

SHEET SKEWING SYSTEMS FOR PASSIVE DECELERATING EJECT ROLLS(Cont'd)

FlG. 2A

VIEW A-A

50

FIG. 2B

[This page contains 1 picture or other non-text object]

Page 3 of 4

SHEET SKEWING SYSTEMS FOR PASSIVE DECELERATING EJECT ROLLS(Cont'd)

A common problem with document finishers is encountered when sheets are corner registered in an up-hill compiling tray. Failure during the registration process can occur if a sheet's lead corner rotates (clockwise) into a registration edge. As a result some document finishers use a closely spaced dual-roll sheet ejection nip that utilizes different size roll diameters to intentionally skew sheets in a counterclockwise direction as they are being deposited in the compiling tray. Other document finishers with faster paper velocities require a decelerating sheet ejection system to minimize compile time and scatter as sheets are ejected into the compiling tray. A means of achieving the deceleration is through a passive, non-nip corrugation system, 5 shown in Figure 1A. With such a system skewing the sheets using different size rolls becomes impractical since rolls are spaced further apart then in a closely spaced dual-roll sheet ejection nip system. Disclosed are two non-nip corrugation systems with common size passive decelerating eject rolls that insure proper registration in up-hill compiling tray 20 by skewing sheets.

Figure 1 (A and B) shows one method of achieving sheet skew while using drive rolls of common diameters. The split shaft 35 with gears 25, bearings 30, idler rolls 40 and...