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Browse Prior Art Database

BALL IDLER FOR JAM CLEARANCE

IP.com Disclosure Number: IPCOM000026690D
Original Publication Date: 1993-Apr-30
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 76K

Publishing Venue

Xerox Disclosure Journal

Abstract

When a document has stopped on a bend in one or more nips provided by nip rollers, and is contained by a registration channnel along one edge, it is extremely dificult to clear the document without damaging it by wrinkling. What is needed is to be able to move the document sideways, out of the registration channel, prior to pulling it from the nip rollers.

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XEROX DISCLOSURE JOURNAL

BALL IDLER FOR JAM CLEARANCE
S. Picton

Proposed Classification

US. C1.355/295 Int. C1. G03g 15/20

XEROX DISCLOSURE JOURNAL - Vol. 18, No. 2 MarcWAprill993 171

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

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BALL IDLER FOR JAM CLEARANCE (Cont'd

When a document has stopped on a bend in one or more nips provided by nip rollers, and is contained by a registration channnel along one edge, it is extremely dificult to clear the document without damaging it by wrinkling. What is needed is to be able to move the document sideways, out of the registration channel, prior to pulling it from the nip rollers.

The problem is overcome by using one or more heavy balls to provide the nip force required. The ball(s) is able to rotate so as to enable the document to be pulled out of the nip at an angle to the feed direction. As each ball rolls over the document surface, it induces no wrinkles in its surface.

Using such a 'ball idler' also eliminates the need for either a nip separation system or a one-way clutch assembly, which are expensive alternative ways of overcoming the problem.

In the accompanying isometric drawing, a sheet 2 has been fed upwardly into the nip of two ni rollers 4. On a support surface 6 overlying the rollers 4 are

under gravity. Each ball 10 projects through an aperture in the surface 6 so that when there is no document intervening, its weight is borne by one of the rollers 4. When a sheet becomes jammed in the nip...