Browse Prior Art Database

SHEET REVERSER

IP.com Disclosure Number: IPCOM000024414D
Original Publication Date: 1980-Aug-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 1 page(s) / 53K

Publishing Venue

Xerox Disclosure Journal

Abstract

A tri-roll sheet reverser-skew correcting mechanism is provided having a pair of centrally located drive rolls 2 provided with overriding clutches. The drive rolls 2 cooperate with ball-type rollers 4 to provide the forward and reverse nips. A spring loaded sheet stop 6 is provided with widely spaced, rotatable stop rolls 8 to arrest sheet movement and urge the sheet into the reverse nip. When a skewed sheet enters the reverser, the leading edge contacts one of the sheet stop rolls 8 and a rotational moment is induced by the feed roll 2 on the leading portion of the skewed sheet causing a rotation of the sheet and overdriving of the opposite feed roll. At the same time the lead edge of the sheet is caused to side shift against the stop roll 8. This rotation continues until both stop rolls are contacted by the lead edge after which non-skewed reversal is achieved.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

XEROX DIĀ§CLOSURE JOURNAL

SHEET REVERSER Proposed Stephen J. Wenthe Classification

U.S. C1. 271/65 Int. CI. B65h 29/66

4,

6.

A tri-roll sheet reverser-skew correcting mechanism is provided having a pair of centrally located drive rolls 2 provided with overriding clutches. The drive rolls 2 cooperate with ball-type rollers 4 to provide the forward and reverse nips. A spring loaded sheet stop 6 is provided with widely spaced, rotatable stop rolls 8 to arrest sheet movement and urge the sheet into the reverse nip. When a skewed sheet enters the reverser, the leading edge contacts one of the sheet stop rolls 8 and a rotational moment is induced by the feed roll 2 on the leading portion of the skewed sheet causing a rotation of the sheet and overdriving of the opposite feed roll. At the same time the lead edge of the sheet is caused to side shift against the stop roll 8. This rotation continues until both stop rolls are contacted by the lead edge after which non-skewed reversal is achieved.

Volume 5 Number 4 July/August 1980 371

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